Type DMX-N Surge Arresters Maximum System Voltage 2 to 36 kv

Transcription

1 Type DMX-N Surge Arresters Maximum System Voltage 2 to 36 kv

2 DMX-N gapless metal oxide surge arresters DMX-N surge arresters are used for the protection of switchgear, transformers and other equipment in high voltage systems from atmospheric and switching overvoltages. DMX-N surge arresters can also be used when lightening intensity or energy capability requirements are high or in case of heavy pollution. The superior design of the DMX-N surge arresters supports conditions which require low weight, reduced clearances, flexible mounting, and shatter-proof housing. Application The DMX-N gapless metal oxide polymer Surge Arrester has been veri ied to meet or exceed all heavy duty distribution class requirements of ANSI C62.11 (IEEE Standard for Metal-Oxide Surge Arresters for AC Power Circuits as a normal duty distribution class arrester. The DMX-N Surge Arrester is designed to meet the following performance data: Performance data Maximum system voltages (V m Duty cycle rated voltages ( Classifying current (IEEE Discharge current withstand strength: High current 4 / 10 µs Low current 2000 µs Energy capability: Short-circuit / pressure relief capability kms 3-45 kms 5 ka peak 65 ka peak 150 A peak 3.3 kj/kv of MCOV 16 ka rms sym Service conditions: Ambient temperature -50 C to + 45 C Design altitude 6000 ft / 1830 m Frequency Hz Type tested to the following standards: IEEE standard C62.11a Notes: 1 Higher altitude designs available on request 2 DMX-N Metal Oxide Gapless Surge Arresters

3 Benefits 100% silicone based housing ABB s DMX-N Surge Arrester now has a new construction to enhance overall lifetime performance. The arrester consists of high performance metal oxide disks molded in a shatterproof silicone polymer housing. The silicone rubber housing features high tracking and arc resistance, excellent hydrophobic properties, and resistance to weathering, Uadiation and pollution. The incorporation of polymer material in a distribution class arrester has resulted in many advantages, including: Direct-molded construction The metal oxide disks are enclosed in a support assembly consisting of reinforced epoxy/fiberglass loops connecting the upper and lower aluminum end pieces. The silicone polymer material is then molded directly to the metal oxide loop assembly, eliminating any air pockets which could cause moisture ingress over time. Lightweight The DMX-N Surge Arrester is less than 50 percent the weight of its porcelain counterpart, which results in easier handling and installation. Damage resistant Polymer construction reduces possible shipping and handling damage, as well as, damage due to vandalism. Safety Shatter-resistant construction provides greater protection for personnel, as well as, nearby equipment. Configuration options The arrester can be furnished with a variety of mounting configurations, as well as various configurations for line and ground electrical connections. Reduced electrical clearance Polymer construction has resulted in much smaller housing dimensions in comparison with porcelain units of the same voltage rating. This size reduction enables efficient use of space for switchgear enclosures, mobile substations and other applications where space restrictions are present. Nameplate Standard (Stainless steel DMX-N Metal Oxide Gapless Surge Arresters 3

4 Quick selection guide System Voltage Surge Arrester Nominal ANSI/IEEE Ratings Four-Wire Four-Wire Maximum Three-Wire Four-Wire Three-Wire Grounded Grounded High Impedance V m V n V n / V MCOV / V MCOV / V MCOV Medium Voltage / Y / Y / / / / / / Y / Y / / / Y / Y / / / Y / Y / / / Y / Y / / / Y / Y / / / / Y / Y / / / Y / Y / / / / Y / Y / / / Y / Y / / / / 29 Key V n Nominal System Voltage per NEMA C84.1 V m Maximum System Voltage per NEMA C84.1 Duty Cycle Rated Voltage per IEEE C62.11 MCOV Maximum Continuous Operating Voltage per IEEE C62.11 TOV SPL LPL FOW Temporary Overvoltage Switching Protective Level 500 A Lightning Protective Level Front of Wave 4 DMX-N Metal Oxide Gapless Surge Arresters

5 Guaranteed performance data and technical data for housings Electrical characteristics Ratings TOV Maximum residual voltage with current wave, (kv peak Voltage MCOV SPL (SIPL 30/60 µs LPL (LIPL 8/20 µs FOW 0.5 µs V MCOV 1 sec 10 sec 500 A 1.5 ka 3 ka 5 ka 10 ka 20 ka 10 ka Vertical mounting styles with standard creepage distance Surge Arrester IEEE Ratings / V MCOV (kv Style Number Creepage Distance inches (mm Strike Distance inches (mm BIL 1.2/50 µs Weight A dry (Mass max kv peak lbs (kg inches (mm Fig 3.0 / 2.55 DMX-N ( ( ( ( / 5.10 DMX-N ( ( ( ( / 7.65 DMX-N ( ( ( ( / 8.40 DMX-N ( ( ( ( / 10.2 DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( / DMX-N ( ( ( ( Arrester assembly consists of arrester unit, line and ground terminals. DMX-N Metal Oxide Gapless Surge Arresters 5

6 Style numbering system Single rated surge arresters N A Style Number Digit 1 DMX-N Normal Duty Distribution Class Arrester N 2-4 Arrester Rated (Duty Cycle Rating ( `003 = 3.0 / 2.55 `018 = 18 / 15.3 `006 = 6.0 / 5.10 `021 = 21 / 17.0 `009 = 9.0 / 7.65 `024 = 24 / 19.5 `010 = 10 / 8.40 `027 = 27 / 22.0 `012 = 12 / 10.2 `030 = 30 / 24.4 `015 = 15 / 12.7 `036 = 36 / Creepage Distance A = Standard design 6 Line Hardware A = Stud only (no hardware B = Stainless steel wire clamp C = Stud with stainless steel nut, flat washer and lock washer X = No hardware 7 Line Leads 1 = 36, #6 AWG insulated wire - 2 ring terminals 6 = 20, #6 AWG insulated wire - shipped 1 both ends 2 = 36, #6 AWG insulated wire - 1 ring terminal / 1 end shipped 1 7 = 13, #6 AWG insulated wire - 2 ring terminals 3 = 36, #6 AWG insulated wire - shipped 1 both ends 8 = 13, #6 AWG insulated wire - 1 ring terminal / 1 end shipped 1 4 = 20, #6 AWG insulated wire - 2 ring terminals 9 = 13, #6 AWG insulated wire - shipped 1 both ends 5 = 20, #6 AWG insulated wire - 1 ring terminal / 1 end shipped 1 X = No line terminal wire 8 Protective Cap Y = Yes N = No 6 DMX-N Metal Oxide Gapless Surge Arresters

7 Optional mountings Style Number Digit 9 Ground Hardware A = Stud only (no hardware B = Stainless steel wire clamp C = Stud with stainless steel nut, flat washer and lock washer X = No hardware 10 Mounting Options 1 = No mounting options 2 = Insulated bracket 3 = Insulated bracket with NEMA cross arm bracket 4 = Insulated bracket with Transformer bracket = Insulated bracket with Transformer bracket = Insulated bracket with Transformer bracket = Insulated bracket with Transformer bracket Packaging A = Individual Carton (Assembled Terminal Hardware. Each arrester is shipped in an individual high strength cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Any optional brackets or hardware are provided unassembled. B = Bulk Packed (Assembled Terminal Hardware. Pallet sized bulk cardboard packaging for transformer mounting bracket options (Digit 10, 4-7 only. Each arrester is shipped fully assembled including transformer mounting bracket. Available for 3-24 kv arresters only. Full pallet quantities only: 3-10 kv = 90, kv = 72, kv = 40. DMX-N Metal Oxide Gapless Surge Arresters 7

8 Contact us ABB Inc. High Voltage Products - Surge Arresters 100 Distribution Circle Mount Pleasant, Pennsylvania 15666, USA Phone: +1 ( Fax: +1 ( Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction in whole or in parts is forbidden without ABB s prior written consent. Copyright 2015 ABB. All rights reserved. Document Number: 2GNM / March 2015