M20-2 analogue outputs, M30-3 analogue outputs Programmable multi-transducer

Transcription

1 for the measrement of electrical ariables in heay crrent power systems Application The RSH Dcer M20, M30 series of mlti - transdcers (Fig. 1) simltaneosly measre seeral ariables of an electric power system and process them to prodce 2 resp. 2 or 3 Analog otpts are aailable or power metering. For two of the limit otpts p to three misbrands can be logically combined. The mlti-transdcers are also eqipped with an RS 232 serial interface to which a PC with the corresponding software can be connected for programming or accessing and execting sefl ancillary fnctions. The sal modes of connection, the types of measred ariables, their ratings. the transfer characteristic for each otpt etc. are the main parameters that hae to be programmed. Ancillary fnctions inclde a power system chec, proision for displaying the measred ariably on a PC monitor, the simlation of the otpts for test prposes and a facility for printing nameplates. Featres / Benefits Simltaneos measrement of seeral ariables of a heay-crrent power system / fll sperision of an asymmetrically loaded for-wire power system,rated crrent 1 to 6 A, rated oltage 57 to 400 (phase-tonetral) or 100 to 693 (phase - to - phase) Measred ariables Otpt Types Crrent,oltage (rms), actie/reactie/apparent power cos φ, sin φ, power factor RMS ale of the crrent with wire setting range (bimetal measring fnction) Slae pointer fnction for the measrement of the RMS ale B Freqency Aerage ale of the crrents with sign of the actie power (power system only) 2 analog Or 3 analog M20 M30 Fig.1.the niersal basic ersion RSHDcer M20, M30 in hosing T24,clipped onto a top-hat rail H Windows software with password protection for programming. data analysis, power system stats simlation, acqisition of meter data and maing settings AC/DC power spply/niersal Proision for either snapping the transdcer onto top-hat rails or secring it with screws to a wall or panel A/D RS-232 M D/A D/A 8 A B For all heay-crrent power system ariables 2 or 3 otpts npt oltage p to 693 (phase-to-phase) niersal analoge otpts (programmable) High accracy: / 0.2% Freqency 0.15 % and P 0.25 % (nder reference conditions) 1 = npt transformer 2 = Mltiplexer 3 = atching stage 4 = A/D conerter 5 = Microprocessor 6 = Electrical inslation 7 = D/A conerter 8 = Otpt amplifier/latching stage 9 = Digital otpt (open-collector) 10 = Programming interface RS = Power spply M D/A D/A D/A 8 A B C *Contact to factory for complete details Fig.2.Bloc diagram. A,B,C,D = analoge otpts; E,F,G,H = digital otpts -1-

2 Symbols Symbols Meaning Symbols Meaning Measred ariable Q Reactie power of the system 0 ower limit of the measred ariable Q = Q1 + Q2 + Q3 1 Brea point of the measred ariable Q1 Reactie power phase 1 (phase-to-netral - ) 2 pper limit of the measred ariable Q2 Reactie power phase 2 (phase-to-netral - ) Y Otpt ariable Q3 Reactie power phase 3 (phase-to-netral - ) Y0 Y1 Y2 r ower limit of the otpt ariable Brea point of the otpt ariable pper limit of the otpt ariable npt oltage Rated ale of the inpt oltage Phase-to-phase oltage - Phase-to-phase oltage - Phase-to-phase oltage - Phase-to-phase oltage - Phase-to-phase oltage - Phase-to-phase oltage - S S1 S2 S3 Sr PF PF1 PF2 PF3 Apparent power of the system S= Apparent power phase 1 (phase-to-netral - ) Apparent power phase 2 (phase-to-netral - ) Apparent power phase 2 (phase-to-netral - ) Rated ale of the apparent power of the system Actie power factor cos φ = P/S Actie power factor phase 1 P1/S1 Actie power factor phase 2 P2/S2 Actie power factor phase 3 P3/S3 M Aerage ale of the oltages ( ) / 3 npt crrent AC crrent AC crrent AC crrent QF QF1 QF2 QF3 Reactie power factor sin φ = Q/S Reactie power factor phase 1 Q/S Reactie power factor phase 2 Q2/S2 Reactie power factor phase 3 Q3/S3 r M MS B BT BS BST φ F Fn Rated ale of the inpt crrent Aerage ale of crrents ( ) / 3 Aerage ale of the crrents and sign of the actie power (P) RMS ale of the crrent with wire setting range (bimetal measring fnction) Response time for B Slae pointer fnction for the measrement of the RMS ale B Response time for BS Phase-shift between crrent and oltage Freqency of the inpt ariable Rated freqency F F1 F2 F3 C R Rn Power factor of the system F = sgn Q (1- PF ) Power factor phase 1 sgnq1 (1- PF1 ) Power factor phase 2 sgnq2 (1- PF2 ) Power factor phase 3 sgnq3 (1- PF3 ) Factor for the intrinsic error Otpt load Rated brden P P1 P2 P3 Actie power of the system P = P1 + P2 + P3 Actie power phase 1 (phase-to-netral - ) Actie power phase 2 (phase-to-netral - ) Actie power phase 3 (phase-to-netral - ) H Hn CT T Power spply Rated ale of the power spply c.t. ratio.t. ratio -2-

3 Applicable standards and reglations D E EC 1010 or E E EC Part E5 EC ,3,4,6 D/DE 3540 Page 2 D D EC 68/2-6 EC 1036 D Electrical measring transdcers for conerting AC electrical ariables into analoge and digital signals Safety reglations for electrical measring, control and laboratory eqipment Protection types by case (code P) High-freqency interference test (solid-state relays only) Electromagnetic compatibility for indstrial process measrement and control eqipment Reliability of measring and control eqipment (classification of climates) AC qantities Terminal marings Basic enironmental testing procedres, ibration, sinsoidal Solid state AC watt hor meters for actie power (Classes 1 and 2) Crrent interface for the transmission of implses between implse encoder conter and tariff meter Tests for flammability of plastic materials for parts in deices and appliances Continos thermal ratings of inpts Crrent circit oltage circit Short-time thermal rating of inpts npt ariable Crrent circit mber of inpts 10 A 400 single- phase AC system 693 three-phase system 480 single-phase AC system 831 three-phase system Dration of oerload 400 single-phase AC system 693 three-phase system 100 A 5 3 S 5 min. nteral between two oerloads 250 A 1 1 S 1 hor oltage circit 1 A,2 A,5 A Single-phase AC system 600 H intem:1.5 r S 10 S Three-phase system 1040 H intem:1.5 r S 10 S Analoge otpts For the otpts A,B,C Technical data npts npt ariables: see Table 2 and 3 Measring ranges: see Table 2 and 3 Waeform: Rated freqency: Consmption: Sinsoidal Hz; 16 2/3 Hz oltage circit: ² / 400 W Condition external power spply Crrent circit: 0.3 A /5 A Otpt ariable Y Fll scale Y2 mpressed DC crrent see Ordering nformation mpressed DC oltage see Ordering nformation imits of otpt signal for inpt oerload and/or R = Y2 40 ma Rated sefl range of otpt load AC component of otpt signal (pea-to-pea) R Y Y2 Y2 Y2 Y2 2mA 1mA Y Y2 The otpts A,B,C may be either short or open- circited. They are electrically inslated from each other and from all other circits (floating) -3-

4 All the fll-scale otpt ales can be redced sbseqently sing the programming software, bt a spplementary error reslts. The hardware fll-scale settings for the analoge otpts may also be changed sbseqently. Conersion of a crrent to a oltage otpt or ice is also possible This necessitates changing resistors on the otpt board. The fll-scale ales of the crrent and oltage otpts are set by arying the effectie ale of two parallel resistors (better resoltion). The ales of the resistors are selected to achiee the minimm absolte error. Calibration with the programming software is always necessary following conersion of the otpts. Refer to the Operating instrctions. cation: The warranty is oid if the deice is tampered with Reference conditions Ambient temperatre: + 23 C ± 1 Pre-conditioning: 30 min. acc. to D E Section 4.3, Table 2 npt ariable: Rated sefl range Power spply: H = Hn ± 1% Actie/reactie factor: cos φ = 1 resp.sin φ =1 Freqency: Hz,16 2/3 Hz Waeform: Sinsoidal, form factor Otpt load: DC crrent otpt: 7.5 R = ± 1% n Y2 DC oltage otpt: Y2 R = ± 1% n 1mA Miscellaneos: D E System response Accracy class: (the reference ale is the fll-scale ale Y2) Measred ariables System: Actie, reactie and apparent power Phase: Actie, reactie and apparent power Power factor actie, reactie and apparent power Condition 0.5 2/Sr /Sr < /Sr /Sr < Sr S 1.5 Sr (2-0) = 2 0.5Sr S 1.5 Sr 1 (2-0) < Sr S 1.5 Sr 0.5 (2-0) < 1 0.1Sr S < 0.5 Sr (2-0) = 2 0.1Sr S < 0.5 Sr 1 (2-0) < 2 0.1Sr S < 0.5 Sr 0.5 (2-0) < 1 Accracy class* 0.25 c 0.5 c 0.25 c 0.5 c 0.25 c 0.5 c 1.0 c 0.5 c 1.0 c 2.0 c AC oltage 0.1 r 1.2 r 0.2 c AC crrent/ 0.1 lr 1.5 r 0.2 c crrent aerages System freqency 0.1 r 1.2 r resp. 0.1 lr 1.5 r c ( f = Hz) c (f = 16 2/3 Hz Plse acc. to EC r 1.5 r 1.0 *Basic accracy 0.5 c for applications with phase-shift Dration of the measrement cycle: Approx.0.25 to 0.5 s at 50 Hz depending on measred ariable and programming Response time: 1.2 times the measrement cycle Factor c (the highest ale applies): inear characteristic: Y0 1 - C = Y2 or C = Bent characteristic: Y1 Y0 2 C = or C = Y2 1 Y1 - C = Y2 or C = 1 1 <

5 o 0/Y0 2/Y2 Y o 0/Y0 1/Y1 2/Y2 Y Programming connector on transdcer nterface: RS 232 C DSB socet: 9-pin ---imit of the otpt range ---imit of the otpt range The interface is electrically inslated from all other circits Fig.3 Examples of settings with linear characteristic nflencing qantities and permissible ariations Acc. to D EC 688 Safety Protection class: Fig. 4 Examples of settings with bent with bent characteristic. Enclosre protection: P 40,hosing P 20,terminals Oeroltage category: nslation test(erss earth): npt oltage: AC 400 npt crrent: AC 400 Otpt: DC 40 Power spply: AC 400 DC 230 Srge test: 5 ; 1.2/50 s; 0.5 Ws Test oltages: 50 Hz,1 Min. according to D E inpts erss all other circits as well as oter srface 3250 inpt circits erss each other 3700 power spply erss otpts and SC as well as oter srface 490 otpts and SC erss each other and erss oter srface Power spply AC oltage AC/DC power pac (DC and Hz) 100,110,230,400,500,or 693 ±10%,45 to 65 Hz Power consmption approx. 10 A Table 1: Rated oltages and tolerances Rated oltage Tolerance DC/AC DC % DC/AC AC ± 10% Consmption: 9 W resp. 10 A nstallation data Hosing: Hosing T24 See Section Dimensioned drawings Hosing material: ean 940 (Polycarbonate). Flammability class -0 acc. to 94 self-extingishing, non-dripping, free of halogen Monting: For snapping onto top-hat rail (35 15 mm or mm ) acc. to E or directly onto a wall or panel sing the pll-ot screw hole bracets Orientation: Any Weight: With spply transformer approx. 1.1 g With AC/DC power pac approx. 0.7 g Terminals Type: Screw terminals with wire gards Max. wire gage: 4.0 mm² single wire or mm² fine wire ibration withstand (tested according to D E ) Acceleration: ± 2 g Freqency range: Hz, rate of freqency sweep: 1 octae/minte mber of cycles: 10 in each of the three axes Reslt: o falts occrred, no loss of accracy and no problems with the snap fastener Ambient conditions Climatic rating: Climate class 3 acc. to D/DE 3540 ariations de to ambient temperatre: ± 0.1%/10 ominal range of se for temperatre: C (sage grop ) Storage temperatre: - 40 to + 85 C Annal mean relatie hmidity: 75% -5-

6 Electrical connections Fnction Meas. npt AC crrent AC oltage Otpts Analoge Digital A + - B + - C + - Power spply AC ~ ~ DC + - f power spply is taen from the measred oltage internal connections are as follow:: Application (system) nternal connection Terminal / System Connection 1/3 4/6 7/ Single phase AC crrent 2 / 11 ( - ) 4-wire 2 / 11 ( - 2) symmetric load All other* 2 / 5 ( - ) A B C RS Measring inpt (+) ~ (-) ~ Front System/application Measring npt Terminals Single-phase AC system *Contact to factory for complete details -6-

7 System/ application Measring npt Terminals wire symmetric load : Connect the oltage according to the following table for crrent measrement in or : Crrent transformer Terminals wire symmetric load Phase-shift : - : Connect the oltage according to the following table for crrent measrement in or : Crrent transformer Terminals wire symmetric oad Phase-shift : - : Connect the oltage according to the following table for crrent measrement in or : Crrent transformer Terminals

8 System/ application Measring npt Terminals wire symmetric load Phase-shift :- : Connect the oltage according to the following table for crrent measrement in or : Crrent transformer Terminals wire symmetric load : Connect the oltage according to the following table for crrent measrement in or : Crrent transformer Terminals wire asymmetric load* 2 x x x *Contact to factory for complete details - 8-

9 System/ application Measring npt Terminals wire asymmetric load* x x x 3 single-pole inslated oltage transformers in high-oltage system 4-wire asymmetric load* Open Y connection* x x ow-oltage system 2 single-pole inslated oltage transformers n high-oltage system *Contact to factory for complete details Relationship between PF,QF and F Fig.5 Actie power PF------reactie power QF----power factor F

10 M20-2 analoge otpts, M30-3 analoge otpts Dimensioned drawings Fig.6 RSHDcer M20, M30 in hosing (35 15 mm or mm, acc. to E ). 124 T24 clipped onto a top-hat rail Table 4: Accessories Description Programming cable PC software RSH Drer (in English on two 3 1/2* discs) Operating nstrctions RSH Dcer M20, M30. in English Fig.7.RSH Dcer M20, M30 in hosing Bracets plled ot. T24, screw hole monting -10-