Arc Vault Protection System

Transcription

1 GE Energy Industrial Slutins Arc Vault Prtectin System Applicatin and Technical Guide

2 HAZARD CLASSIFICATIONS The fllwing imprtant highlighted infrmatin appears thrughut this dcument t warn f ptential hazards r t call attentin t infrmatin that clarifies a prcedure. Carefully read all instructins and becme familiar with the devices befre trying t install, perate, service r maintain this equipment. DANGER Indicates a hazardus situatin which, if nt avided, will result in death r serius injury. WARNING Indicates a hazardus situatin that, if nt avided, culd result in death r serius injury. CAUTION Indicates that if the hazard is nt avided culd result in minr r mderate injury. NOTICE Is used t ntify f practices nt related t persnal injury. TRADEMARKS Arc Vault Prtectin System EntelliGuard G EntelliGuard TU WARRANTY This dcument is based n infrmatin available at the time f its publicatin. While effrts have been made t ensure accuracy, the infrmatin cntained herein des nt cver all details r variatins in hardware and sftware, nr des it prvide fr every pssible cntingency in cnnectin with installatin, peratin, and maintenance. Features may be described herein that are nt present in all hardware and sftware systems. GE Industrial Slutins assumes n bligatin f ntice t hlders f this dcument with respect t changes subsequently made. GE Industrial Slutins makes n representatin r warranty, expressed, implied, r statutry, with respect t, and assumes n respnsibility fr the accuracy, cmpleteness, sufficiency, r usefulness f the infrmatin cntained herein. N warrantees f merchantability r fitness fr purpse shall apply. Cntact yur lcal sales ffice if further infrmatin is required cncerning any aspect f the Arc Vault Prtectin System peratin r maintenance General Electric All Rights Reserved ii

3 DEH Rev. 2 Arc Vault Table f cntents TABLE OF CONTENTS SECTION 1. General Infrmatin...1 Overview...1 Prduct cnfiguratin...1 Arcing fault energy limiting...5 SECTION 2. Features and Characteristics...6 Cmpnents...6 Arc Vault Stack...6 Arc Vault Device and Cassette...6 Arc Vault Device & Arc Vault Cassette Cnnectins SECTION 3. Arc Vault Relay and Cntrl System...12 Arc Vault Cntrl System...12 Arc Vault Relay & Cnnectins...12 Arc Vault Relay Input Definitins & Ratings...13 Arc Vault Activatin Switch...13 Arc Vault Relay Output Definitins & Ratings...13 Arc Vault Device Input...16 Arc Vault Device Output Definitins & Ratings...16 Arc Vault Pwer Supply...16 Details f Arc Vault Pwer Supply...16 Current and Ptential Transfrmers...16 Details f an Arc Vault current transfrmer...16 Medium Vltage (MV) r Lw Vltage (LV) Main Circuit Breaker Requirements...17 Cntrllable upstream device details...17 Arc Vault Prtectin System Tests...17 Operating mdes...17 SECTION 4. Accessries...18 Arc Vault Device/Cassette...18 SECTION 5. Physical Data & Ordering Infrmatin Ordering Prduct Dimensins Arc Vault Stack cmpnents Arc Vault Device Cmpartment...22 Arc Vault Drawut Frame...22 Arc Vault Indicatrs and Switches...22 SECTION 6. Applicatin Data...24 Overview...24 Arc Vault Prtectin System Time Current Curve (AV-TCC)...25 Applicatin cnsideratins...26 System cnditins...26 Pickup settings...26 Arc Flash incident energy...27 Cnnectin and requirements...27 Line side discnnect device selectin and cntrl...27 Prtectin Methdlgy...27 Cnfiguratins Cnfiguratin 1 Remte Lcated Stack w/ Arc Vault n the Line side f the LVPCB mains (CTs nt in Swgr)...30 Cnfiguratin 2 Remte Lcated Stack w/ Arc Vault n the Lad side f the LVPCB mains...31 Prduct Features Arc Vault Device Rejectin Scheme...32 Current Transfrmers SECTION 7. Physical Data...34 Arc Vault Stacks Arc Vault Stack details SECTION 8. Standards and Labeling References General Electric All Rights Reserved iii

4 Arc Vault DEH Rev. 2 Table f cntents Applicable Dcuments...35 Arc Vault Prtectin System Labels Cde/Agency Requirements SECTION 9. Quick Specificatin Guide and Installatin Specificatin claims Arc Vault Ready Optins fr new switchgear Site Survey fr retrfit applicatins Installatin envirnment / Requirements Example One Lines SECTION 10. Frequently Asked Questins iv 2012 General Electric All Rights Reserved

5 DEH Rev. 2 SECTION 1. GENERAL INFORMATION OVERVIEW The Arc Vault Prtectin System is a breakthrugh arc fault prtectin technlgy that can stp an arcing fault in less than eight millisecnds (ms) t prvide increased arc flash hazard mitigatin with equipment drs pen r clsed. This fast arcing fault cntainment technlgy can help reduce the severity f wrk-related injuries and lst prductivity. The Arc Vault Prtectin System features an activatin switch (ACT) that can be used during rutine maintenance t put the lw-vltage equipment int a high-prtectin mde. When an arc flash event ccurs, the system will send a signal t the arc cntainment device. The arc is then diverted t the cntainment system in less than ne-half cycle r eight millisecnds depending n fault cnditins. At the same time the decisin t divert the arc is made, the system will als send a signal t pen an upstream circuit breaker. This will turn ff the system in apprximately 3 cycles t 5 cycles depending n the type and speed f the circuit breaker used, at which pint the arc in the cntainment system will terminate The Arc Vault Prtectin System can be retrfitted nt bth GE and nn-ge lw vltage switchbards, switchgear and mtr cntrl centers t expand its applicatin fr mst existing facilities. Depending n site cnditins, the design enables a retrfit installatin t be cmpleted within as little as a day f utage. The GE Arc Vault Prtectin System can be retrfit withut having t replace the existing lw vltage equipment lineup. The GE Arc Vault Prtectin System will cntain an arc fault in less than 8ms, resulting in incident energy in accrdance with IEEE 1584 at 18 frm the arc event at less than 1.2 Cal/cm 2, with the circuit breaker cmpartment drs pen, in a 480V 65kAIC system. The GE Arc Vault Prtectin System reduces building cnstructin csts because it des nt require exhaust chimneys r plenums t direct the arc flash energy utside f the building, when cmpared t traditinal arc resistant switchgear. Additinally, if an arc flash incident ccurs during maintenance, the lw-vltage switchgear can be peratinal again within a wrking day assuming apprpriate replacement parts are available, which Arc Vault General Infrmatin imprves yur verall system uptime when cmpared t traditinal arc-resistant switchgear. The GE Arc Vault prtectin system reduces the energy flwing thrugh the system by abut 60% r mre cmpared t a blted fault that wuld ccur with a crwbar system. The energy reductin will lwer the stress n ther system cmpnents such as transfrmers, circuit breakers, and bus bar cnstructin and imprve yur verall system uptime when cmpared t traditinal arc resistant switchgear. The GE Arc Vault Prtectin System will prtect the transfrmer transitin sectin and the lw-vltage lineup in a system that cntains an upstream cntrllable device n the transfrmer primary circuit. In a system where a primary cntrllable device des nt exist, the GE Arc Vault Prtectin System can prvide prtectin t the lw vltage equipment dwnstream by cntrlling the secndary main in the substatin (refer t Figure 6-3 and Figure 6-4). PRODUCT CONFIGURATION The Arc Vault Prtectin System detects the presence f a high magnitude arcing fault via a set f current and ptential transfrmers. Cntrl electrnics and pwer circuits create a lw impedance three phase arc inside a cntainment vessel (Arc Vault Device) within a predefined respnse curve (See Figure 6-2 arcing fault transfer. The cntained, lw impedance arc diverts fault current energy int the vessel until an upstream breaker, signaled by the Arc Vault Prtectin System, pens the circuit. The Arc Vault Prtectin System mnitrs the status f its cmpnents and prvides visual and cntact clsure infrmatin f its status. The Arc Vault Prtectin System includes the fllwing majr subsystems (shwn in Figure 1-1 and Figure 1-3): Lw Vltage AKD-20 Arc Vault Stack Arc Vault Device Arc Vault Relay 2012 General Electric All Rights Reserved 1

6 Arc Vault DEH Rev. 2 General Infrmatin Figure 1-1 Arc Vault ACT Line Diagram Figure 1-2 Frnt panel cntrls and indicatrs General Electric All Rights Reserved

7 DEH Rev. 2 Arc Vault General Infrmatin Table 1-1 Mdes f Operatin System status System Status indicatrs (see Figure 1-2) Blue light OFF White light OFF Red light ON Panel settings (see Figure 1-2) Functinality (see Figure 1-1, items 1 thrugh 4) Off (n prtectin) Activatin switch = OFF Test switch = OFF This will be the mst cmmn mde f peratin fr the Arc Vault Prtectin System. Any level f current inrush mnitred by the current transfrmers will nt initiate any actins by the Arc Vault Prtectin System Full prtectin Blue light ON White light OFF Red light OFF Activatin switch = ON Test switch = OFF Any current inrush mnitred by the current transfrmers exceeding the threshld limit will initiate the fllwing: (1) Arc Vault Relay will send a trip signal via a dry cntacts t the upstream circuit breaker and lck-ut relay (86 device this device is shwn n the picture abve) (2) Arc Vault Relay will send a transfer signal t the Arc Vault Device and event transfer t Arc Vault Device will ccur (3) Arc Vault Relay will nly send transfer signal after a minimum phase vltage has been mnitred by the ptential transfrmers (4) Arc Vault Device will initiate a lw impedance 3 phase arcing fault within itself (5) Arc Vault Device will transfer and cntain an arcing fault in Target Equipment t itself (6) Event is cleared frm the system via the upstream circuit breaker and the amber / yellw indicatin is illuminated Partial prtectin Blue light OFF White light ON Red light OFF Activatin switch = ON Test switch = OFF Any current inrush mnitred by the current transfrmers exceeding the threshld limit will initiate the fllwing: (1) Arc Vault Relay will send a trip signal via a dry cntacts t the upstream circuit breaker and lck-ut relay (86 device) (2) Event is cleared frm the system via the upstream circuit breaker Off (System Test mde) Blue light OFF White light OFF Red light ON Activatin switch = OFF Test switch = ON Arc Vault Relay will send a transfer signal t the Arc Vault Device nly if the Arc Vault Device is in the Test Psitin within its cassette Arc Vault Device will fire its plasma gun but will nt create a lw impedance 3 phase arcing fault within itself Arc Vault Device will nt transfer r cntain any arcing fault in the Target Equipment t itself Test Mde is cncluded when peratr returns the Test Switch t the OFF psitin All system status indicatr lights shuld turn ON. Off (Light Test) Blue light ON White light ON Red light ON Amber light ON Activatin switch = TEST 2012 General Electric All Rights Reserved 3

8 Arc Vault DEH Rev. 2 General Infrmatin Figure 1-3 Arc Vault slutin blck diagram Red Bxes dente functins lcated within the Arc Vault Device including Plasma Gun Electrnics & Arc Vault Device. Orange Bxes dente functins lcated within the Arc Vault Relay including Interpsing CTs, Arc Vault Relay & Interpsing PTs. Green Bxes dente functins lcated within the Arc Vault Stack including Lckut Device, Pwer Surce, Test Switch, Activatin Switch, Ptential Transfrmers, Pwer Supply & Auxiliary Cntrl Lgic. Blue Bxes dente functins lcated remte frm the Arc Vault Stack including Current Transfrmers and Main Circuit Breaker, als knwn as Upstream Circuit Breaker. Nte: these lcatins are preferred lcatins but actual applicatin may duplicate functins and/r lcate these functins remte frm the Arc Vault Stack within applicatin limits defined elsewhere in this dcument General Electric All Rights Reserved

9 DEH Rev. 2 Arc Vault General Infrmatin Arcing fault energy limiting The Incident Energy limitatin prvided by the Arc Vault Prtectin System may be calculated in accrdance with the IEEE 1584 guide when applied as fllws. Uses Medium Vltage (MV) cntrllable device r Lw Vltage (LV) main circuit breaker that perates & interrupts in less than 5 cycles Cnnected t 3 Phase/3 Wire and 3 Phase/4 Wire pwer systems including delta, flating delta, slidly grunded delta, slidly grunded wye, high resistance grunded wye cnfiguratins and high resistance grunded delta systems. Frequency: 60Hz nminal; 48 ~ 72Hz applicatin range (based n IEEE C37.50/51 60Hz +/-20%) Pwer Surce can be transfrmer fed r generatr fed Maximum Phase t Phase Vltage f 508 VAC Minimum Phase t Phase Vltage f 380VAC Nminal Phase t Phase Vltage VAC Used with silver r tin plated cpper r aluminum bus either bare r insulated One Arc Vault system is designed t prtect ne bus. Prtectin fr systems with multiple buses is pssible and cnfiguratin may vary. Cntact yur GE Engineering Services ffice fr cnsultatin. Prvides prtectin as defined later in this publicatin fr single, duble ended r multi-surced switchgear lineups with pen transitin tie breaker schemes nly. Clsed transitin and parallel switchgear schemes are nt in the scpe f this prduct. When a remte Arc Vault Stack is used t prtect a switchgear lineup, the cnnecting primary cable r bus length may nt exceed 50 linear feet when using (6) 500MCM cables per phase in a nn-magnetic duct r 40 linear feet f (6) 500MCM cables per phase in a magnetic duct. The Arc Vault Prtectin System limits the maximum incident energy, successfully transfers an arc energy t the Arc Vault Device and cntains the arc therein. See Table 1-2 and Figure 6-1 fr maximum incident energy and vltage ratings. These ratings apply when the equipment drs are either pened r clsed. Table 1-2 Arc Vault Prtectin System Maximum Incident Energy Maximum Incident Energy Less than 1.2cal/cm 2 Vltage & Interruptin Levels Wrking Distance (Bus t Chest) Any Equipment Dr (Open/Clsed) 508V/65kA 18 Inches Open r Clsed 2012 General Electric All Rights Reserved 5

10 Arc Vault DEH Rev. 2 Features and Characteristics SECTION 2. FEATURES AND CHARACTERISTICS COMPONENTS Arc Vault Stack The Arc Vault Stack cntains the Arc Vault Device/Cassette and the Arc Vault Relay, ptential transfrmers and/r auxiliary cntrl devices The Arc Vault Stack is a freestanding structure fr retrfit r new installatin / applicatins. The allwable cnfiguratins f the Arc Vault Stack are dcumented in the GE AKD-20 UL/CUL file as a classified system and cnfigured within the GE requisitin engineering system. Arc Vault Device and Cassette 3 psitin clsed dr drawut device within the Arc Vault Stack Fits int a 22 wide by 21 high cmpartment, see Figure 5-1 Arc Vault Stack All ptinal accessries used with GE AKD- 20 switchgear frame 2 cassettes are available. Sme examples are Kirk-key interlcks, racking handle, remte racking device, defeatable dr interlcks, etc. The Arc Vault triggering system receives a signal frm the Arc Vault Relay t transfer energy and cntains it until either a medium vltage (MV) r lw vltage (LV) upstream circuit breaker clears the current frm the pwer system Arc Vault Device requires service and/r replacement after 1 arc incident event Replacement f Arc Vault Cassette cmpnents r Arc Vault Stack cmpnents is nt required after an arc incident event f 6 cycles r less. The Arc Vault Device cntains an event pp-ut target that activates when the Arc Vault Device receives a transfer signal frm the Arc Vault Relay. The event pput target may be manually reset after ensuring the Arc Vault Device and system are fully peratinal. Figure 2-1 Arc Vault Device Figure 2-2 Arc Vault Device in cassette General Electric All Rights Reserved

11 DEH Rev. 2 Arc Vault Features and Characteristics Figure 2-3 Arc Vault Device Face Plate 2012 General Electric All Rights Reserved 7

12 Arc Vault DEH Rev. 2 Features and Characteristics Figure 2-4 Frnt view f Arc Vault Instrument Tray General Electric All Rights Reserved

13 DEH Rev. 2 Arc Vault Features and Characteristics Figure 2-5 Freestanding Arc Vault Stack (Arc Vault Cassette nt shwn) 2012 General Electric All Rights Reserved 9

14 Arc Vault DEH Rev. 2 Features and Characteristics Arc Vault Device & Arc Vault Cassette Cnnectins The Arc Vault Device secndary discnnect cnnectin is shwn in Figure 2-6. The Arc Vault Device has sufficient cntrl input and utputs t prtect a single pwer surce within a switchgear applicatin. The Arc Vault Device and Arc Vault Cassette: Is a Clsed dr drawut device with fur (4) unique psitins f cnnect, test, discnnect and withdrawn Is pwered by a Pwer Supply described later in this dcument and external frm the cassette and Arc Vault Device Each primary discnnect uses a single finger cluster assembly Utilizes a unique rejectin scheme that prevents an EntelliGuard G circuit breaker frm racking int an Arc Vault Cassette and prevent an Arc Vault Device frm racking int an EntelliGuard G Envelpe 2 cassette Wire type, size and rating is cmpliant with NEC and C standards and use acceptable wiring practices Can be bench tested by GE Energy Services withut a cnnectin t the entire Arc Vault Prtectin System. The fllwing field acceptance tests will cnfirm whether the Arc Vault Device is acceptable fr peratin prir t installing a device int service (nte that Dielectric integrity can be verified with cmmercially available test equipment and is nt included in the standard bench tests): Verify peratin f plasma gun and circuitry including sensing phase vltage cllapse at the Arc Vault Device primary discnnects Verify peratin f all Arc Vault Device visual indicatrs & peratin f all input and utput signals At initial startup the Arc Vault Device reprts its status as Nt Ready until all input/utputs can be verified Can be prvided r used with any cmbinatin f the fllwing ptinal accessries: Dr Interlck, (1) r (2) kirk key lcks, AKD-20 remte racking device, mimic bus, lifting tl. Charging and discharging circuits are fully cntained within the Arc Vault Device with exceptin f the externally prvided 24VDC cntrl pwer frm the Pwer Supply. Racking mechanical interlcks within the Arc Vault cassette & internal t the Arc Vault Device prevents the racking f an Arc Vault Device frm any psitin in a cassette unless the Arc Vault Device capacitrs are fully discharged. Arc Vault Device is equipped with tw push buttns and a mechanical flag with clear viewing windw fr cnnect and discnnect: a red Discharge buttn and a black Charge buttn. The Arc Vault Device is equipped with a pull-ut tag cmprising f hles allwing a user t padlck the device in either the Discharge r Charge state fllwing OSHA lck-ut/tag-ut requirements. Depressing the Discharge r Charge buttns will drive a psitive actin mechanical system within the Arc Vault Device that will accmplish the actins belw. All these actins are internal t the Arc Vault Device and behave the same when the Arc Vault Device is nt inserted in an Arc Vault cassette. Discharge buttn actins: Changes the indicatr flag t Discharged Opens an electrical psitive actin switch that will islate the 24VDC pwer supply frm the capacitr charging circuit Clses an electrical switch that will engage the Arc Vault Device capacitrs t a discharging circuit Fully discharging f the capacitrs is realized befre an peratr can insert a racking handle int the Arc Vault Cassette There is a yellw indicatin light n the frnt fascia f the Arc Vault Device in between the red Discharged light and the green Charged light that will illuminate during discharge; the ttal discharge time is abut 5 secnds. Mechanically releases a lever and rller that will allw a user t pen the racking dr n the Arc Vault cassette General Electric All Rights Reserved

15 Arc Vault DEH Rev. 2 Features and Characteristics Charge buttn actins: Changes the indicatr t Charged Clses an electrical psitive actin switch that will engage the 24VDC pwer supply t the capacitr charging circuit Opens an electrical psitive actin switch that will islate the Arc Vault Device capacitrs frm the discharge circuit There is a yellw indicatin light n the frnt fascia f the Arc Vault Device in between the red Discharged light and the green Charged light that will illuminate during charging; the ttal charge time may take up t 90 secnds. IMPORTANT: If the system has been in the discharged mde r nt pwered fr mre than a year in a warm ambient envirnment, it may take lnger than tw minutes fr the system t cmplete the self-test and indicate Fully Charged. Once the system is Fully Charged, leave it charged fr 30 minutes. Mechanically hld a lever and rller that will prevent a user frm pening the racking dr n the Arc Vault cassette The cassette has field installable primary stab tips similar t replaceable stab tips fr GE AKD-20 style LV Switchgear. The cassette serves as an intermediary cnnectin between the riser assembly and the Arc Vault Device, prviding a means fr a drawut cnnectin f the Arc Vault Device. Figure 2-6 Arc Vault Secndary Discnnect & Psitin Switch Diagrams PHA Line (Upper) PHB Line (Upper) PHC Line (Upper) Primary Discnnects Pgun Fire Input Cap Charging Input Arc Vault Device Cap Status (NO) (NC) Cap Status (NO) (NC) Target (NO) (NC) Target (NO) (NC) Secndary Discnnects General Electric All Rights Reserved

16 DEH Rev. 2 SECTION 3. ARC VAULT RELAY AND CONTROL SYSTEM ARC VAULT CONTROL SYSTEM The Arc Vault relay integrates the system f the current transfrmers, ptential transfrmers, pwer supply and auxiliary cntrl devices intercnnected t mnitr the equipment fr an event within the switchgear assembly. Current Transfrmers and Ptential Transfrmers measure current and vltage t supervise trip peratin. See descriptin n Figure 3-1 and SECTION 6. In the Full Prtectin mde, the Arc Vault Prtectin System mnitrs the current transfrmers, ptential transfrmers and cnfirms the incident by cmparing current levels t a user-set threshld. Current levels are predefined settings that the use can select within the Arc Vault Relay. Upn exceeding the current threshld setting, the Arc Vault Relay sends a signal t the Arc Vault Device and initiates a trip t either an MV circuit breaker r LV main circuit breaker alng with initiating a trip t a lckut (86) device. The Arc Vault Relay is cnfigurable by the user t set the threshld f current at 0.8X t 3.0X in 0.2X increments, where X = 5000A. Uses current transfrmers rated 5000/5 amps fr all applicatins ratings. Uses ptential transfrmers rated 600/120 vlts and vltage cnditiners fr all applicatin ratings. Is equipped with inputs fr current transfrmers, vltage transfrmers, 24VDC cntrl pwer, test switch and activatin switch signals. Arc Vault Relay is equipped with utputs t initiate arc transfer in the Arc Vault Device, trip the upstream circuit breaker, activate a lckut (86) device and prvide psitive feedback cntact clsure t activatin switch The Arc Vault stack is capable f supprting field-made wire terminatins fr retrfit applicatins. Arc Vault Relay will mnitr an Activatin switch, which has three unique psitins f Off, On & Test. When a user changes the activatin switch t the On psitin, the Arc Vault Relay will prvide the user with prtectin as defined later in this dcument, will display an icn n its screen and prvide a cntact clsure (psitive feedback) allwing a user t cnfirm its mde f peratin. Arc Vault Arc Vault Relay and Cntrl System Arc Vault Relay will have an internal watchdg that will flash a LED n the face f the Arc Vault Relay t indicate if the relay is kay r defective. If the Arc Vault Relay is defective, it will nt display the prtectin icn n its LED screen and will nt change the state f the system status light r the utput cntact. ARC VAULT RELAY & CONNECTIONS Arc Vault Relay Cntrl Pwer Input is 24VDC derived frm GE Pwer Leader Pwer Supply #PLPS4G01 r #PLPS3G01. See Arc Vault Pwer Supply n page 16. Arc Vault Relay is dr munted and fits nt a 22 wide by 21 high auxiliary cmpartment dr Arc Vault Relay and CT lcatins are placed fr each specific switchgear assembly within cmpnent limits and engineering standards Arc Vault Relay indicatrs are active nly when 24VDC cntrl pwer input available At initial start-up, the Arc Vault Relay reprts its status as Nt Ready until the internal watchdg has determined the unit is peratinal at which pint the Arc Vault Relay will reprt its status as OK r Active. Operates with standard cntrl pwer transfrmer (CPT) schemes, including ride-thrugh fr cntrl pwer transfer. The Arc Vault Relay will display Active and change its Psitive Feedback utput cntact t (NC) when the user places the activatin switch int the On mde and the internal watchdg has cnfirmed that the relay is in the prtective mde. Output cntacts f secndary discnnect are 24 VDC. Input cntacts d nt require high fidelity cntacts and are cmpatible with standard cntacts used in SB-1, SB-9, SBM, CR104 and P9 cntrl devices General Electric All Rights Reserved 12

17 Arc Vault DEH Rev. 2 Arc Vault Relay and Cntrl System Arc Vault Relay Input Definitins & Ratings Cntrl Pwer The Arc Vault Relay pwer surce input is rated fr 24VDC and prvided by Arc Vault Pwer Supply. See Arc Vault Relay descriptin in Figure 3-1. Arc Vault Pwer Supply n page 16. See Figure 3-1 fr wiring cnfiguratin. Test Switch input t mnitr status f a user initiated test f the Arc Vault Prtectin System. See Arc Vault Relay Figure 3-1 fr input behavir and wiring cnfiguratin. The switch psitins are labeled as NORMAL (center psitin) and TEST (right psitin). The switch has a spring return t NORMAL psitin frm TEST psitin. Activatin Switch input t mnitr the status f a user initiated activatin f the Arc Vault Prtectin System. See Arc Vault Relay Figure 3-1 fr input behavir and wiring cnfiguratin. The switch psitins are labeled as TEST LIGHT, OFF and ON. The switch has a spring return t OFF frm the TEST psitin while all ther psitins are maintained. Current Transfrmers (Phase A, B, C) current signal inputs t mnitr presence f fault current during an event. These inputs require a 5000/5 A relaying class CT with a minimum rating f C50. See Figure 3-1 fr wiring cnfiguratin. ARC VAULT ACTIVATION SWITCH The Arc Vault Activatin (ACT) switch must be turned n t energize the Arc Vault Prtectin System. The lcatin f the Activatin switch and its indicating lights are at the tp f the Arc Vault stack in the right crner. See Figure 5-4. Arc Vault Relay Output Definitins & Ratings All utput cntacts are shwn in the nrmal (n fault / system ready) state and are held active (clsed) fr nrmally pen cntacts (NO) r held active (pen) fr nrmally clsed cntacts (NC). Lss f cntrl pwer frm the Pwer Supply t the Arc Vault Relay changes utput cntacts frm their nrmal state. Arc Vault Fire Dedicated utput t initiate the peratin f the plasma gun within the Arc Vault Device when an event has been detected. This cntact mimics a single nrmally pen (NO) cntact with a rating f VDC.. Psitive Feedback Output Dedicated dry cntacts t prvide a cntact clsure cnfirming that the relay has received an On input frm the activatin switch and that the relay internal watchdg cnfirms the prtective mde is active. Breaker Trip Slid state relay (SSR) in Arc Vault Relay t initiate the pening f either a MV circuit breaker r a LV main circuit breaker when an vercurrent has been detected. This is a single nrmally (NO) cntact with a rating f 24VDC~250VDC/30 amps r 85VAC~260VAC, 50/60Hz, 20amps. Use f this cntact is restricted t the tripping f an upstream circuit breaker as described in Figure Trip SSR in Arc Vault Relay t initiate perating the lckut relay (86 device) when an vercurrent has been detected. Cmprised f a single nrmally (NO) cntact with a rating f 24VDC~250VDC/30 amps r 85VAC~260VAC, 50/60Hz, 20amps. Use f this cntact is restricted t tripping the lck-ut relay (86 device) as described in Figure General Electric All Rights Reserved

18 DEH Rev. 2 Arc Vault Arc Vault Relay and Cntrl System Figure 3-1 Arc Vault Relay & CT Cnnectin Diagram Line/Surce PHA PHB PHC N PHA PHB Vltage Cnditiner PHA Vltage Cnditiner PHB Vltage Cnditiner PHC Arc Relay PHC CT's N (pt) COM Gnd Input Cntacts/Signals Cntrl Pwer Input ACT Switch Input Test Switch Input Arc Vault P- Gun Fire Qty 1 Output Cntacts Psitive Feedback Output Bkr Trip Qty 1 86 Trip Qty 1 Lad External Inputs The relay system will allw the user t select a setting frm 0.8x t 3x in 0.2x increments. Nte: The system always assumes a 5000A nminal system fr the trip setting regardless f the equipment nminal rating (e.g., 800A, 1600A, 2000A, 3200A, 4000A, etc.) General Electric All Rights Reserved 14

19 Arc Vault DEH Rev. 2 Arc Vault Relay and Cntrl System Figure 3-2 Arc Vault Relay Trip Cnnectin Diagram FUSE FUSE TB TB Arc Relay Bkr Trip Arc Relay 86 Trip Custmer Supplied Cntrl Pwer TB Custmer Supplied Cntrl Pwer TB LV Main Bkr r MV Transfrmer Primary Bkr Main Bkr Shunt Trip 86 Event Arc Vault Relay Bkr Trip and 86 trip cntacts are typically wired internally t the lckut relay r t a terminal blck pint (TB) when tripping a circuit breaker external frm the switchgear assembly. The cntrl bus fr these circuits will be derived either by A custmer supplied surce, which much have stred energy t maintain cntrl vltage during a fault A dedicated CPT surce within the Arc Vault Prtectin System stack, such as a UPS, capacitr trip r statin battery The Arc Vault Relay PT inputs use an industry standard PT rati f 600/ General Electric All Rights Reserved

20 DEH Rev. 2 Arc Vault Arc Vault Relay and Cntrl System Arc Vault Device Input Dedicated input frm the switchgear cntrl wiring t receive fire signal frm Arc Vault Relay. Dedicated input frm Arc Vault Pwer Supply (24VDC) fr the capacitr charging circuits. Arc Vault Device Output Definitins & Ratings All utput cntacts are shwn with the Arc Vault Device in the Cnnect psitin. Dry cntacts used t mnitr the capacitr status and cmprised f (2) frm-c cntacts that change state based upn the charge status f the capacitrs. The cntacts are held active when the capacitrs are fully charged. Target Output Dry cntacts used t mnitr gun target status and cmprised f (2) frm-c cntacts that change state when a signal is received frm the Arc Vault Relay thrugh the Fire Input and the gun Target changes state. The target and cntacts are manually reset. All f these cntacts are used in the cntrl circuit. ARC VAULT POWER SUPPLY Each Arc Vault Prtectin System is prvided with a dedicated Pwer Supply t cnvert the custmer available AC r DC cntrl bus surce t a 24VDC cntrl bus specific fr the Arc Vault Prtectin System. This Pwer Supply shuld nt be used t supprt ther devices r systems beynd this publicatin. Details f Arc Vault Pwer Supply Used with custmer supplied r cntrl pwer transfrmer (CPT)-generated pwer surces. Custmer pwer supplied surce culd be a CPT cnnected t the Arc Flash Prtected bus, battery bank r a separately derived AC surce. Output will be maintained fr a sufficient time t ensure successful peratin in the event f an input vltage drp due t an arcing event. Generates a 24VDC utput pwer surce fr the Arc Vault Prtectin System cmpnents. Is surface munted and fits nt a 22 wide by 21 high auxiliary rear cmpartment barrier r intermediate hinged barrier. Each cnnectin pint can supprt the terminatin f tw wires and ptinal wire markers. Wire type, size and rating is cmpliant with NEC, UL1558 and C standards and acceptable wiring practices. The lcatin f Arc Vault Pwer Supply and necessary fuses/grunds are defined by engineering standards fr each specific switchgear assembly and within cmpnent and technical limits. Supprts the fllwing devices withut degradatin in perfrmance: Arc Vault Relay up t (1) maximum Arc Vault Device up t (1) maximum ET-16 LED Indicating Lights up t (9) maximum C-2000 Auxiliary Relay up t (8) maximum Will perate withut degradatin f perfrmance when used with GE switchgear cntrl pwer transfrmer (CPT) schemes. Will perate withut degradatin f perfrmance with custmer prvided pwer surce that can either be grunded r ungrunded per NEC requirements. CURRENT AND POTENTIAL TRANSFORMERS Current transfrmers are available t mnitr the current flwing t the switchgear intended fr prtectin. See Figure 3-1 fr a typical cnnectin diagram. Details f an Arc Vault current transfrmer Uses a rati f 5000/5 Amps, relaying class C50, r better. Nte: A split-cre current transfrmer culd be used, if it meets a class C50 rating. Shipped separately t be installed by a cntractr r end-user. Cmpliant t all IEEE and UL standards fr relaying class CTs. The Current Transfrmer and Arc Vault Relay perfrmance is nt degraded with variatin in cable and bus gemetry thrugh the slid cre CT windw General Electric All Rights Reserved 16

21 Arc Vault DEH Rev. 2 Arc Vault Relay and Cntrl System MEDIUM VOLTAGE (MV) OR LOW VOLTAGE (LV) MAIN CIRCUIT BREAKER REQUIREMENTS The Arc Vault Prtectin System will rely upn either a circuit breaker n the medium vltage (MV) side f the transfrmer r a lw vltage (LV) main circuit breaker t islate the pwer surce frm feeding an event. This device is cmmnly referenced as a circuit breaker. Cntrllable upstream device details A Circuit Breaker that is capable f being tripped via a dry cntact (Breaker Trip) frm the Arc Vault Relay. Is fully rated t interrupt the vltage and shrt circuit rating f the cnnected pwer system. The Circuit Breaker clse circuit can be cntrlled electrically with a dry cntact frm the Lck-ut Relay (86) t prevent accidental re-clsure after an arc flash incident has ccurred. Will interrupt and clear the full shrt circuit rating f the cnnected pwer system within 5 cycles r less. ARC VAULT PROTECTION SYSTEM TESTS The Arc Vault Prtectin System can be tested while installed within the switchgear assembly. Arc Vault Device/Arc Vault Relay Test: Using the cntrl circuits an peratr may perfrm this test. The test is initiated by turning the Test Initiate Switch t the Test psitin. By the nature f the cntrl circuit this test cannt be initiated unless the Arc Vault Device is in the Test psitin. This test cnfirms functinality f: The Arc Vault Relay Plasma Gun fire cntact, switchgear wiring and Arc Vault Device capacitr and Plasma Gun circuits. Cntrl pwer, Arc Vault Pwer Supply, Arc Vault Indicating Lights/Signals and Lck-ut Device (86). Arc Vault Device Psitin Switches, Cap Status Cntacts, Cap Status Indicatrs, Target Cntacts and switchgear wiring. This test des nt cnfirm functinality f: Arc Vault Relay Current Transfrmers. Arc Vault Device transfer capability r vltage cllapse acrss Arc Vault Device electrdes. Dielectric Integrity f Arc Vault Device r Arc Vault Cassette. Des nt pen upstream circuit breaker r cnfirm peratin f upstream circuit breaker trip circuit. OPERATING MODES Three dedicated indicating lights that prvide distinct status f readiness (Mdes) fr the Arc Vault Prtectin System. The custmer can select r affect these mdes f peratin by either changing the psitin f the Activatin switch r racking the Arc Vault Device within its cassette. The mde f peratin can als autmatically change based upn the Readiness f the Arc Vault Prtectin System cmpnents. See Table 3-1 belw fr details. The indicating lights f the Arc Vault Prtectin System will nt prvide the custmer with a false level f prtectin in any mde f peratin including failure f the Arc Vault Prtectin System cmpnents. Table 3-1 Activatin Switch (ACT) perating mdes in cnnect psitin Activatin Switch (User Selectable) Arc Vault Device Arc Vault Relay Red Indicating Light (N Prtectin Mde) White Indicating Light (Arc Vault Relay Mde) Off Nt Ready Nt Ready On Off Off Off Ready Nt Ready On Off Off On Nt Ready Nt Ready On Off Off On Ready Nt Ready On Off Off On Nt Ready Ready Off On Off On Ready Ready Off On On Blue Indicating Light (Arc Vault Relay & AVD Mde) General Electric All Rights Reserved

22 DEH Rev. 2 Arc Vault Accessries SECTION 4. ACCESSORIES ARC VAULT DEVICE/CASSETTE The Arc Vault Device/Cassette can be prvided with the fllwing accessries and standard equipment: Up t tw field installable ptinal kirk key interlcks. (ptinal). Racking Handle strable within Arc Vault Device Cassette Standard. Optinal Racking Handle nt strable within Arc Vault Device Cassette. Lifting Bar fr use with lifting means Standard (catalg n. GAVLDI). Optinal Dr Interlck. Permits pening cubicle dr nly when AV device is racked t the TEST r DISCONNECT psitin. Optinal 4 sub base assembly. Optinal remte racking device General Electric All Rights Reserved 18

23 Arc Vault DEH Rev. 2 Physical Data & Ordering Infrmatin SECTION 5. PHYSICAL DATA & ORDERING INFORMATION ORDERING The Arc Vault Prtectin System is a requisitin engineered prduct that is rdered similar t LV switchgear. The key aspects t define prir t rdering are: System Vltage System Frequency System Max ka System cntrl vltage, 120/240VAC, 120/240VDC, 48VDC including UPS fr AC mdels Arc Vault lck ut arrangement (ex. 86 lckut) Lifting and racking means (including remte racking) Special wiring including special key lcking prvisin Primary pwer feed prvisins including tp feed, bttm feed and cable ruting (e.g., Busway r cable tray) Site specific requirements such as pwer system studies and arc flash studies, height f rm, lcatin f the Arc Vault Prtectin System, munting prvisins (husekeeping) pad prvisins and CT placement (zne f prtectin) PRODUCT DIMENSIONS The Arc Vault Prtectin System is 24 wide by 48 deep by 78 high and requires 12 f flr t ceiling clearance. The stack weight is apprximately 2050 lbs. ARC VAULT STACK COMPONENTS The Arc Vault Stack cnsists f unique riser cdes r stack that will supprt the applicatins detailed in Applicatin Data sectin. See Figure 5-1 fr stack details. Nte: Cable run frm gear t Arc Vault must be in a nnmagnetic cnduit. Additinal relaying and cntrl requirements including cntrl f the upstream interrupting device General Electric All Rights Reserved

24 DEH Rev. 2 Arc Vault Physical Data & Ordering Infrmatin Figure 5-1 Arc Vault Stack Arc Vault Device 2012 General Electric All Rights Reserved 20

25 Arc Vault DEH Rev. 2 Physical Data & Ordering Infrmatin Figure 5-2 Exhaust Dr Lcatin and Dimensins (side view) Exhaust Dr requires clearance frm cnduit, plumbing and ther mechanical devices Intersectin cntrl wiring trugh Tp cable entry Electrnics cmpartment Arc Vault device cmpartment Cmpartment drs Bttm electrnics cmpartment including UPS Cable Cnnect Bus T meet ANSI C arcresistant standards, ceiling height must be min. 12 feet frm flr. Exceptin t this requirement is abve cable entry space. Sprinkler heads cannt be lcated within a 5- ft radius f the perimeter f the Arc Vault stack. Open Exhaust Dr Height is 94.1 inches Bttm cable entry General Electric All Rights Reserved

26 DEH Rev. 2 Arc Vault Physical Data & Ordering Infrmatin Figure 5-3 Arc Vault Stack Cntrls and Indicatrs ARC VAULT DEVICE COMPARTMENT The Arc Vault Device Cmpartment cnsists f an Arc Vault Device Cassette alng with a set f unique sub-assemblies t integrate this assembly int the Arc Vault Stacks detailed in Sectin 7. ARC VAULT DRAWOUT FRAME The drawut frame is similar t a standard circuit breaker and includes a Clsed dr drawut device with fur (4) unique psitins f cnnect, test, discnnect and withdrawn. ARC VAULT INDICATORS AND SWITCHES The preferred lcatin fr the Arc Vault Activatin Switch (ACT) and Indicating Lights is within the instrument tray. Lcatin f these cmpnents can be elsewhere within technically defined limits f requisitin engineering. The instrument tray shall include the fllwing cmpnents as illustrated in Figure circuit breaker cntrl fuses (ptinal quantity frm 0 up t a maximum f 4) 2 Arc Vault Device indicating lights (1 Red IL,, 1 Green IL) 4 Arc Vault Prtectin System indicating lights (1 Blue, 1 Yellw, 1 Red and 1 White) 2012 General Electric All Rights Reserved 22

27 Arc Vault DEH Rev. 2 Physical Data & Ordering Infrmatin Figure 5-4 Arc Vault Instrument Trays General Electric All Rights Reserved

28 DEH Rev. 2 SECTION 6. APPLICATION DATA OVERVIEW The Arc Vault Prtectin System is used t sense and arcing fault and transfer energy away frm the fault int its wn arc cntainment chamber within a few millisecnds t minimize the incident thermal arc flash energy available t the riginal arcing fault. Simultaneusly the system will trip a line side circuit breaker t interrupt current int the system. It is recmmended that the GE Arc Vault Prtectin System nly be installed in cnsultatin with a qualified pwer system engineer familiar with Arc Flash Incident energy calculatins and a qualified electrical safety prfessinal familiar with the system, the Arc Vault Prtectin System and the intended use f the system. The Incident Energy available during arcing fault cnditins n a system prtected by a GE Arc Vault Prtectin System may be calculated by qualified persnnel in accrdance with the IEEE 1584 guide and the Time Current Curve fr the Arc Vault Prtectin System (AV TCC), when applied as fllws. With Medium Vltage (MV) cntrllable device r Lw Vltage (LV) main circuit breaker that perates & interrupts in less than 5 cycles. Cnnected t 3 Phase/3 Wire and 3 Phase/4 Wire pwer systems including delta, flating delta, slidly grunded delta, slidly grunded wye, high resistance grunded wye cnfiguratins and high resistance grunded delta systems. Pwer Surce can be transfrmer fed r generatr fed. Frequency: 60Hz nminal; 48 ~ 72Hz applicatin range (based n IEEE C37.50/51 60Hz +/-20%). Nminal Phase t Phase Vltage VAC Maximum Phase t Phase Vltage f 508 VAC Minimum Phase t Phase Vltage f 380VAC One Arc Vault system is designed t prtect ne bus. Prtectin fr systems with multiple buses is pssible and cnfiguratin may vary. Cntact yur GE Engineering Services ffice fr cnsultatin. Prvides prtectin as defined later in this specificatin fr single, duble ended r multisurced switchgear lineups with tie-breaker schemes. When the Arc Vault is enabled autmatic thrw-ver schemes shuld be disabled. Clsed transitin r parallel peratin prvide additinal cmplexity and may nt be able t be handled. Cntact yur GE Engineering Services ffice fr cnsultatin. Arc Vault Applicatin Data When a remte Arc Vault Stack is used t prtect an existing switchgear lineup, the cnnecting primary cable r bus length may nt exceed 50 linear feet when using 2000A cpper cables assuming a minimum f (6) 500MCM cables per phase. Cnduit must be nnmagnetic. The Arc Vault Prtectin System limits the maximum incident energy by transferring the system s energy int its arc cntainment chamber. When implemented within its applicatin rating (22-65kA & 480VAC nminal) the Arc Vault Prtectin System shuld limit arcing time within 8 ms resulting in incident energy, calculated per IEEE 1584, f less than 1.2 calries, at 18 and fr arcing gaps f 25 mm r larger General Electric All Rights Reserved 24

29 Arc Vault DEH Rev. 2 Applicatin Data ARC VAULT PROTECTION SYSTEM TIME CURRENT CURVE (AV-TCC) Figure 6-1 is the AV-TCC. The device will wrk frm the sensed current that is expected t be an arcing fault r high impedance fault that allws the system vltage t stay high enugh t trigger the GE Arc Vault Prtectin System. The current sensing may be adjusted frm 4000 A t A in 1000A increments (5000A CT, 0.8X t 3X in 0.2X increments). Figure 6-1 Arc Vault Prtectin System Time Current Curve (AV-TCC) General Electric All Rights Reserved

30 DEH Rev. 2 Arc Vault Applicatin Data The AV-TCC is derived frm the curve shwn in Figure 6-2. This figure represents the arcing time fr tests dne at 480V with a 25mm arcing gap at the fault initiatin pint. Tests were dne at varius available fault currents (Ibf) ranging frm 10kA t 65kA. The arc was initiated in an pen bx sized at 20x20x20 r smaller. The AV-TCC applies nly t systems able t deliver 22kA r higher Ibf. The tw diagnal lines are the cnstant energy lines fr 1.2 calries at 18 with a 25mm electrde gap: the blue upper line is fr a 480/277V grunded system, the red lwer line is fr a 480V flating r high resistance grunded system. The hrizntal dtted upper lines represent the typical clearing range fr a lw vltage pwer circuit breaker, cycles at 60Hz. Figure 6-2 Arc Vault Prtectin System Respnse Curve (Arcing time vs. lbf, 25 mm arc gap) Typical Instantaneus perating time fr a LVPCB, cycles, ~0.05S Cnstant energy lines, 1.2cal/cm 2 HRG/flating Slidly grunded Ttal arcing time: 7ms 22-65kA Ibf 25mm, 480V APPLICATION CONSIDERATIONS Time Current Curve (TCC) fr Arc Vault used in a 480V system, based n 25mm minimum arcing gap (may be larger, but nt smaller) at the prtected equipment and 22kA r larger Ibf at the bus where the Arc Vault is cnnected. System cnditins Full pst arc initiatin time frm 22kA t 65kA Ibf, based n a 25mm gap is 7 millisecnds. Nminal 480V. Larger arcing gaps shuld result in equal r faster times. Timing applies t systems with a nminal 480V. Lwer r higher vltage may result in slightly different timing with n significant effect n incident energy. Timing applies t slidly grunded, resistance grunded r flating systems at 480V. Timing is based n transfer frm an pen bx. Times frm a fully enclsed bx may vary. Available fault current at the prtected bus may be as lw as 14kA, but minimum 22kA at the bus where the Arc Vault is cnnected. Pickup settings Operatin f the Arc Vault is based n its wn arcing gap and the gap at the riginal fault arc pint. Tests were dne with a 25mm gap at the riginal arcing fault initiatin pint. Times fr fault gaps with larger gaps will be equal r faster than indicated in Arc Vault TCC. The system requires three 5000/5A CTs f relaying class C50 r better. Settings may be adjusted frm 80% t 300% f CT rating in 20% increments. The setting has a +10% reading tlerance (i.e., 9%, +11% f nminal pickup setting shwn n TCC). 85% expected arcing current MUST be higher than the maximum tlerance fr the selected pickup setting f the Arc Vault sensing system. The arcing gap at the riginal arcing fault pint determines the fault arcing current which drives the Arc Vault s sensing system. It is imprtant t set the arc vault sensing threshld belw the minimum expected 2012 General Electric All Rights Reserved 26

31 Arc Vault DEH Rev. 2 Applicatin Data arcing fault current, accunting fr all device and system tlerances, t be prtected against. It is suggested the pickup setting be as lw as practical fr expected inrush current. Arc Flash incident energy The Arc Vault TCC may be used in Arc Flash calculatins n all 480V, slidly grunded, impedance grunded, r flating, systems expected t deliver 22kA t 65kA blted fault current at the pint where the arc vault is cnnected. If available fault current is lwer than 22kA, but higher than 10kA the Arc Vault will still functin but a few additinal millisecnds may be required fr full transfer. The TCC is nt accurate in that range, but less than 1.2 calries per square cm is still expected at 18. Cnnectin and requirements The Arc Vault Prtectin System must be cnnected with (6)-500MCM cpper cable using nn-magnetic duct. Cable length may be up t 50 feet (15 meters). The Arc Vault Prtectin System uses 24VDC prvided by an internal pwer supply. The pwer supply requires cntrl pwer in the V AC r DC range. Fr reliability pwer may be prvided frm multiple separately derived systems as lng as the thrw-ver is rated t perate in 300ms r less The 5000A CTs may be cnnected up t 150 cable feet away (300 lp) frm the Arc Vault Relay using 12 AWG r lwer wire. Arc Vault Primary cnnectin: The Arc Vault retrfit stack is equipped with cable tap-ffs and lugs at the rear f the gear, sized t accmmdate the required (6) 500 MCM cables (per phase). Switchgear Main Bus Tap-ff pint: The Arc Vault retrfit stack must be cnnected t the intended equipment lineup directly belw the upstream cntrllable device (MV/LV breaker) that it is intended t trip. The Arc Vault Prtectin System will prvide a prtectin zne nly belw the main bus tap-ff pint. (Main bus cable tap-ffs nt prvided.) Line side discnnect device selectin and cntrl In active mde, Arc Vault Prtectin System will sense current and immediately perate a designated line side circuit breaker t initiate fault current interruptin. If the sensed vltage exceeds the factry set threshld then it will als initiate an energy transfer. A vltage belw the threshld indicates a cllapsed system r a blted fault cnditin and the Arc Vault Relay will nt be signaled t transfer energy. The line side device (upstream) may be a lw vltage main r a medium vltage primary main fr a transfrmer. Cntrl pwer t perate the shunt trip, capacitr trip r ther trip mechanism must be supplied by the installer. Back up. The installer may, at his ptin, install additinal vercurrent cntrl r transfer tripping with current sensing, delay r circuit breaker peratin lgic t perate anther circuit breaker further upstream. The cntrlled circuit breaker used t interrupt current t the GE Arc Vault Prtectin System must be maintained per the manufacturer s recmmendatins and ensured t be in prper wrking rder at all times. Prtectin Methdlgy The Arc Vault Prtectin System wrks by sensing current and vltage. Current abve the user set threshld causes the Arc Vault Prtectin system t pen the cntrlled circuit breaker. If the system simultaneusly senses sufficient vltage t indicate that the high current is caused by an arcing fault then the Arc Vault absrptin is triggered t transfer the energy away frm the arcing fault. Mdern trip systems such as the EntelliGuard TU electrnic trip may als be prvided with a temprary instantaneus setting called RELT (Reduced Energy Let- Thrugh) fr GE, Maintenance Switch by ther manufacturers. This trip capability may be used as redundant back up prtectin fr cntrl f the circuit breaker. Figure 6-3 is a simplified ne line f the cntrl system cntrlling a lw vltage substatin main circuit breaker. A similar system can be used t cntrl a medium vltage circuit breaker n the transfrmer s primary. When cntrlling a Medium vltage main the Arc Vault must be cnnected t the bus at the transfrmer secndary n the line side f the secndary main. The Arc Vault shuld nt be cnnected in such a manner that it cannt be discnnected frm the surce while the faulted bus remains cnnected t any surce. Any circuit breaker that separates the Arc Vault frm the surce prviding fault current must als discnnect the surce frm the fault. In In Figure 6-3 the Arc Vault cntrls the secndary main. Figure 6-4 shws an implementatin cntrlling the primary main. Figure 6-5 implementatin is incrrect because the cntrlled circuit breaker can discnnect the faulted bus but the arc vault remains cnnected. Similarly, in Figure 6-6 the Arc Vault cannt be cnnected in such a manner that it can be discnnected frm the faulted bus if the faulted bus can remain energized after the Arc Vault is discnnected frm the surce General Electric All Rights Reserved

32 DEH Rev. 2 Arc Vault Applicatin Data Figure 6-3 Lw Vltage Main Prtected System Figure 6-4 Medium Vltage Device Prtected System Figure 6-5 Incrrect Medium Vltage Implementatin Figure 6-6 Incrrect Medium Vltage Implementatin In any applicatin invlving multiple surces such as a duble-ended substatin an Arc Vault Prtectin System will be required fr each bus. Any autmatic Thrw-Over (ATO) scheme shuld be disabled during Arc Vault Prtectin System peratin whether the transitin is pen r clsed. Fr mre cmplex cntrl implementatins 2012 General Electric All Rights Reserved 28

33 Arc Vault DEH Rev. 2 Applicatin Data cntact GE Engineering Services fr cnsultatin prir t implementatin r system design. CONFIGURATIONS The fllwing illustratins cnvey hw the Arc Vault Prtectin System is applied t prvide prtectin fr an existing lineup f switchgear. The illustrated applicatins are single-ended lineups but duble-ended lineups and multi-surce lineups are within scpe f this prduct. The Arc Vault Prtectin System shuld nt be applied fr clsed transitin and paralleling applicatins. Additinal Arc Vault Devices and Arc Vault Relays are required fr additinal pwer surces (e.g., tw Arc Vault systems are required fr a duble-ended lineup). The fllwing cnfiguratins cnvey nly typical r pssible applicatins f switchgear assemblies but d nt detail all pssible cmbinatins General Electric All Rights Reserved

34 DEH Rev. 2 Cnfiguratin 1 Remte Lcated Stack w/ Arc Vault n the Line side f the LVPCB mains (CTs nt in Swgr) The current transfrmer s placement, as shwn utside the lineup, dictate which sectins and/r primary bus is mnitred fr a fault level f current assciated with an arc flash incident. See Operating Mdes f Arc Vault Prtectin System n page 17 fr details. In this cnfiguratin, nly areas highlighted in yellw are prvided with prtectin as defined in Prduct Features n page 32. Arc Vault Applicatin Data The lck-ut relay (device 86) is wired in such a manner that the upstream circuit breaker cannt be clsed unless the lck-ut relay is manually reset by the user. Once the Arc Vault Device and target equipment is inspected/maintained and the lck-ut relay is reset; the user can then clse the upstream circuit breaker t restre pwer t the applicatin. This cnfiguratin assumes that there is nly ne pwer surce fr the lad bus. Figure 6-7 Single-ended (Radial) Applicatin with Remte Arc Vault Stack 2012 General Electric All Rights Reserved 30

35 Arc Vault DEH Rev. 2 Applicatin Data Cnfiguratin 2 Remte Lcated Stack w/ Arc Vault n the Lad side f the LVPCB mains The current transfrmer s placement, as shwn in stack 101, dictate which sectins and/r primary bus is mnitred fr a fault level f current assciated with an arc flash incident. See Operating Mdes f Arc Vault Prtectin System n page 17 fr details. In this cnfiguratin, nly areas highlighted in yellw are prvided with prtectin as defined in Prduct Features n page 32. The lck-ut relay (86 device) is wired in such a manner that the upstream circuit breaker cannt be clsed unless the lckut relay (86 device) is manually reset by the user. Once the Arc Vault Device and target equipment is inspected/maintained and the lck-ut relay (86 device) is reset; the user can then clse the upstream circuit breaker t restre pwer t the applicatin. This cnfiguratin assumes that there is nly ne pwer surce fr the lad bus. Figure 6-8 Single-ended (Radial) Applicatin with Remte Arc Vault Stack General Electric All Rights Reserved

36 DEH Rev. 2 PRODUCT FEATURES The Arc Vault Prtectin System is supplied t prtect either a new switchgear assembly r an existing installed switchgear assembly: The Arc Vault Prtectin System will be classified as Lw Vltage Metal-Enclsed Switchgear per IEEE C with UL Listed label fr third party verificatin when applied within the fllwing ratings: 480VAC phase t phase vltage 60Hz nminal frequency 480VAC When prtected with an acceptable upstream device as described in Medium Vltage (MV) r Lw Vltage (LV) Main Circuit Breaker Requirements n page 17. Withut an external exhaust chimney Arc Vault Applicatin Data The Arc Vault Prtectin System when perated in active mde prvides a ttal arcing time as shwn in the blue curve in Figure 6-2. The Arc Vault Prtectin System when perated in Arc Vault Relay Mde prvides a ttal clearing time as shwn in red in Figure 6-2. ARC VAULT DEVICE REJECTION SCHEME The Arc Vault Cassette has a unique rejectin scheme as detailed in Table 6-1 belw. The rejectin scheme will prevent an EntelliGuard G circuit breaker frm racking int an Arc Vault Cassette and an Arc Vault Device frm racking int an EntelliGuard G circuit breaker cassette. Table 6-1 Arc Vault Device Rejectin Scheme Device Psitin in the cassette Primary Discnnects Secndary Discnnects Arc Vault Functinality Arc Vault dr psitin CONNECTED Engaged Engaged TEST Disengaged Engaged DISCONNECTED Disengaged Disengaged WITHDRAWN Disengaged Disengaged Arc Vault can be perated electrically. Able t transfer arc. Arc Vault device able t be tested. Cntrl circuits peratins can be tested and verified. Plasma gun can be discharged. Lcked ut during transitin, Safe fr maintenance when fully discnnected. Arc Vault can be remved frm the cmpartment. Safe fr maintenance. Clsed Clsed Clsed Open 2012 General Electric All Rights Reserved 32

37 Arc Vault DEH Rev. 2 Applicatin Data CURRENT TRANSFORMERS The Arc Vault Prtectin System is cmpatible with CTs that prvide a 5A secndary utput. CTs can be lcated within the circuit breaker cmpartment, the breaker runbacks, bus cmpartment r external frm the switchgear t be prtected but within the cmpnent and technical limits. The CTs are rated 5000/5A, relaying class C50 r better, and must be cnnected with less than 150 linear feet (300 lp feet) f 12 AWG (r thicker) wire General Electric All Rights Reserved

38 DEH Rev. 2 Arc Vault Physical Data SECTION 7. PHYSICAL DATA ARC VAULT STACKS The Arc Vault Stack cnsists f unique riser cdes r stack cnfiguratins that will supprt the applicatins detailed in the Applicatin Data sectin. Arc Vault Stack details Vertical sectin f AKD-20 switchgear cmprised f a 24 wide, 78 high and 48 deep stack design. Cntains ne Arc Vault Device Cassette Free-standing sectin f unique AKD-20 switchgear design. N special transitin sectin r clse cupling is necessary. Indr cnstructin nly cntaining ne 2000A cable tap ff assembly allwing either tp r bttm entry fr custmer cables. Requisitin engineer defined assembly specific fr each applicatin within cmpnent and technical limits. Prvided with 3 high cmpartment cnstructin nly (A cmpartment = 28 high; B & C cmpartment = 21 high). Arc Vault Cassette is prvided with a shutter assembly as standard. Blted Left and Right (split panels frm frnt t rear) access cvers (attaching hardware des nt use taptites). Blted Rear Access (single panel) access cver (attaching hardware des nt use taptites) General Electric All Rights Reserved 34

39 Arc Vault DEH Rev. 2 Standards and Labeling References SECTION 8. STANDARDS AND LABELING REFERENCES APPLICABLE DOCUMENTS The dcuments belw shall be used as additinal specificatins. ANSI C37.13,16,17, & 50 Lw-vltage AC Pwer Circuit Breakers ANSI C Metal-Enclsed lw-vltage Pwer Circuit Breaker Switchgear ANSI C37.51 Metal Enclsed Lw -Vltage Pwer Circuit Breaker Switchgear Assemblies Cnfrmance test ANSI C37.90 Standard fr Relay Systems Assciated with Electric Pwer Apparatus UL1558 Metal-Enclsed Lw-Vltage Pwer Circuit Breaker Switchgear IBC 2006 Internatinal Building Cde, IEEE 1584 Guide fr Perfrming Arc Flash Hazard Calculatins ANSI Z535 Safety Alerting Standards Activatin (ACT) Cntrl Pwer / Strage Warning Label See Figure 8-2. If the cntrl pwer fr the Activatin (ACT) switch circuit is prtected by a fuse blck r ther discnnecting means in the Arc Vault Stack, then this label is applied next t this discnnecting device in the equipment. Only ne label is prvided and applied t the clsest discnnecting device t the ACT cntrl circuit. Figure 8-2 ACT Cntrl Pwer Warning Label ARC VAULT PROTECTION SYSTEM LABELS The fllwing labels will be applied t the Arc Vault Stack. Activiatin (ACT) Tray Label See Figure 5-4. Label placed next t ACT switch t infrm user n the switch psitins. Activatin (ACT) Warning Label See Figure 8-1. Label placed n Arc Vault Device cmpartment dr just belw lcatin f ACT switch in instrument tray. Figure 8-1 ACT Warning Label CODE/AGENCY REQUIREMENTS The Arc Vault Prtectin System has an ptinal UL label cnfirming cmpliance t IEEE C , UL1558 and applicable sectins f C General Electric All Rights Reserved

40 DEH Rev. 2 SECTION 9. QUICK SPECIFICATION GUIDE AND INSTALLATION SPECIFICATION CLAIMS The GE Arc Vault Prtectin System will transfer energy in 8 millisecnds r less when applied within recmmended guidelines. Incident Arc Flash energy at the arcing fault pint will be reduced belw 1.2 calries at 18 wrking distance based n IEEE calculatins, resulting in incident energy in accrdance with IEEE 1584 at 18 frm the arc event at less than 1.2 Cal/cm 2, with the circuit breaker cmpartment drs pen, in a 480V 65kAIC system. The GE Arc Vault Prtectin System fr lw vltage equipment reduces building cnstructin csts because it des nt require exhaust chimneys r plenums t direct the arc flash energy utside f the building, when cmpared t traditinal arc resistant switchgear. If an arc flash incident ccurs during maintenance at the prtected switchgear, the lw-vltage switchgear can be peratinal again within a wrking day assuming apprpriate replacement parts are available, which imprves yur verall system uptime when cmpared t traditinal arc resistant switchgear. The GE Arc Vault prtectin system reduces the energy flwing thrugh the system by 60% r mre cmpared t a blted fault that wuld ccur with a crwbar system. The energy reductin will lwer the stress n ther system cmpnents such as transfrmers, circuit breakers, and bus bar cnstructin and imprve yur verall system uptime when cmpared t traditinal arc resistant switchgear. The Arc Vault Prtectin System can be retrfit r cnnected t existing GE r ther manufacturers lw vltage equipment, including switchgear, switchbards, and MCCs. The GE Arc Vault Prtectin System will prtect the transfrmer transitin sectin and the lw-vltage lineup in a system that cntains a cntrllable medium vltage upstream cntrllable device. In a system where an upstream cntrllable device des nt exist, the GE Arc Vault Prtectin System can prvide prtectin t the dwnstream lw vltage equipment by cntrlling the secndary main. The GE Arc Vault Prtectin System can be retrfit withut having t replace the existing lw vltage equipment lineup. Arc Vault Quick Specificatin Guide and Installatin ARC VAULT READY OPTIONS FOR NEW SWITCHGEAR New lineups f GE AKD-10, AKD-20, and Entellisys Lw Vltage Switchgear and GR Grup munted switchbards can be designed Arc Vault Ready fr future installatin f the Arc Vault Prtectin System. The equipment culd be designed with necessary bus tap ffs and CTs fixed int place t allw minimized shutdwn time t install and cmmissin the Arc Vault Prtectin System at a later date. Reference Guide frm specificatin: N Arc Flash Prtectin System N Arc Flash Prtectin System SITE SURVEY FOR RETROFIT APPLICATIONS Fr retrfit applicatins the installatin particulars must be assessed. A pwer system and arc flash study must be cmpleted and any required infrmatin n the equipment and unit substatin being prtected must be cllected prir t evaluatin. GE Energy Services can prvide these services and crdinate the entire prject. GE must perfrm the start-up and cmmissining f the Arc Vault Prtectin System nce installed. INSTALLATION ENVIRONMENT / REQUIREMENTS Indr installatin with minimum 12 ft ceilings withut verhead bstructins r sprinklers Flr space fr W2 x D4. S side r rear accessible with prper egress (min 30 frnt and side/rear) t exits is required Maximum 50 cable length away frm pint f cnnectin t electrical system Cntrllable (electrically perated shunt trip f) LV r MV breaker up t 300 away frm AV stack CT lcatin dwnstream f trip device and upstream f the Arc Vault tap-ffs, up t 150 feet away frm AV Current Transfrmers must be cnnected n mre than 150 cable feet frm the Arc Vault relay (300 rund trip) CTs shuld, preferably, be lcated n the line side f a secndary main r as clse as pssible t transfrmer bushings in case a primary device is cntrlled. Dedicated r very reliable pwer surce fr cntrl pwer shuld be prvided General Electric All Rights Reserved 36

41 Arc Vault DEH Rev. 2 Quick Specificatin Guide and Installatin Example One Lines Entire switchgear lineup prtected Incming bus, main breaker, main bus, feeders Trade-ff CT sensr placement Reasnable clse-cupling Retrfit r new cnstructin Using transfer tripping & ther techniques upstream prtectrs may be added as back up Figure 9-1 Detectin upstream MV cntrllable device N MV cntrllable device Prtected zne starts at LV main Main bus, feeders CT directly in line with main Retrfit r new cnstructin Using transfer tripping & ther techniques upstream prtectrs may be added as back up. Figure 9-2 Detectin LV main cntrllable 52 XFMR Bus CT Relay XFMR Bus CT MCB Relay MCB Arc Device Arc Device General Electric All Rights Reserved

42 DEH Rev. 2 SECTION 10. QUESTIONS FREQUENTLY ASKED Where are the marketing/prmtinal literature and presentatins? We have flyers, brchures and vides fr Arc Vault. One vide is named GE Arc Vault Prtectin System Learn Hw it Wrks which explains the peratin and shws a simulated arc flash event. Anther vide named GE Arc Vault Prtectin System See it in Actin shws the Arc Vault in peratin. Additinal infrmatin available: Arc Vault Prtectin System: web page, including a vides: rc_vault.htm brchure: es DEA-489C generic Arc Flash Slutins: web page: brchure: es DEA-478A generic Industrial Slutins: web page: mni_key=mktindusmo brchure: es DEA-458 generic What's needed t test the system? The system will have basic test prcedure similar t breaker testing and cmmissining. Testing will require cntrl pwer. The standard test ptins include a system test and a capacitr functinal test. Additinal testing may be perfrmed by a GE certified Arc Vault field technician (GE Energy Services). This testing includes plasma gun functin, dielectric tests and verall preventative maintenance typical t circuit breakers. Hw are the tests perfrmed? The device test is dne by racking the Arc Vault Device t the test psitin and fllwing the prcedure prvide in I, O&M manual. Sme tests, such as capacitr diagnstics, Arc Vault Frequently Asked Questins can be perfrmed in the cnnected psitin. A remte racking device can be used. Hw d yu check and r test the plasma gun? The plasma gun can be test fired in the test psitin. Hw d we perfrm maintenance? Standard maintenance will cnsist f Perfrming the plasma gun test fire every year. POD replacement every (7) seven years Arc Vault Relay (AVR) replacement every 15 years Maintenance after an event will cnsist f replacing the device. GE Energy Services may ffer ther ptins, such as sending the device back t the factry. What infrmatin is n the frnt f the Arc Vault? The Arc Vault cver cntains capacitr status indicatin including (charged, charging (transitin state) and discharged), event alarm buttn that pps ut, push t charge, push t discharge and charge and discharge indicatrs. Other user infrmatin and functins include warning and infrmatin labels, Activatin switch, Arc Vault Relay, and 86 lckut switch. What is the capability specificatin fr the Arc Vault Prtectin System? Will cntain an arc in less than 8 ms with cmpartment drs pen The incident energy will be less than 1.2cal/cm2 at 18 Can be retrfit nt existing LV equipment, including switchgear, switchbards, and MCCs as lng as expected arcing gap within the equipment is nt less than 25mm (1 ) 2012 General Electric All Rights Reserved 38