High Voltage Surge Arresters Buyer s Guide Section PEXLIM R

Transcription

1 High Voltage Surge Arresters Buyer s Guide Section PEXLIM R

2 Zinc Oxide Surge Arrester PEXLIM R Protection of switchgear, transformers and other equipment in high systems against atmospheric and switching overs. For use when requirements of lightning intensity, energy capability and pollution are moderate. Brief performance data System s (U m ) Rated s (U r ) kv kv Superior where low weight, reduced clearances, flexible mounting, non-fragility and additional personnel safety is required. Major component in PEXLINK TM concept for transmission line protection. Nominal discharge current (IEC) Discharge current withstand strength: High current 4/10 µs Low current 2000 µs 10 ka peak 100 ka peak 600 A peak Other data can be ordered on request. Please contact your local sales representative. Energy capability: Line discharge class (IEC) [2 impulses, (IEC Cl ) Fulfils/exceeds requirements of ANSI transmissionline discharge test for 170 kv systems. Class kj/kv (U r )] Short-circuit/Pressure relief capability 50 ka sym External insulation Fulfils/exceeds standards Mechanical strength: Specified long-term load (SLL) Specified short-term load (SSL) Nm Nm Service conditions: Ambient temperature Design altitude Frequency -50 C to +45 C max m Hz ABB Surge Arresters Buyer s Guide Technical information 29

3 Guaranteed protective data kv Max. system Rated Max. continuous TOV capability 2) Max. residual with current wave operating 1) as per IEC as per ANSI/IEEE 30/60 µs 8/20 µs U m U r U c MCOV 1 s 10 s 0.5 ka 1 ka 2 ka 5 ka 10 ka 20 ka 40 ka 24 3) ) More detailed information on the TOV capability and the protective characteristics are given in Publ. 1HSM en. 1) The continuous operating s U c (as per IEC) and MCOV (as per ANSI) differ only due to deviations in type test procedures. Uc has to be considered only when the actual system is higher than the tabulated. Any arrester with U c higher than or equal to the actual system divided by 3 can be selected. 2) With prior duty equal to the maximum single-impulse energy stress (2.5 kj/kv (U r )). 3) Arresters for system s 36 kv or below can be supplied, on request, when the order also includes arresters for higher system s. Arresters with lower or higher rated s may be available on request for special applications. 30 Technical information ABB Surge Arresters Buyer s Guide

4 Guaranteed protective data kv Max. system Rated Max. continuous TOV capability 2) Max. residual with current wave operating 1) as per IEC as per ANSI/IEEE 30/60 µs 8/20 µs U m U r U c MCOV 1 s 10 s 0.5 ka 1 ka 2 ka 5 ka 10 ka 20 ka 40 ka More detailed information on the TOV capability and the protective characteristics are given in Publ. 1HSM en. 1) The continuous operating s U c (as per IEC) and MCOV (as per ANSI) differ only due to deviations in type test procedures. Uc has to be considered only when the actual system is higher than the tabulated. Any arrester with U c higher than or equal to the actual system divided by 3 can be selected. 2) With prior duty equal to the maximum single-impulse energy stress (2.5 kj/kv (U r )). Arresters with lower or higher rated s may be available on request for special applications. ABB Surge Arresters Buyer s Guide Technical information 31

5 Technical data for housings Max. system Rated Housing Creepage distance External insulation * ) Dimensions U m U r 1.2/50 µs dry 50 Hz wet (60s) 60 Hz wet (10s) 250/2500 µs wet Mass A max B C Fig. mm kg mm mm mm YV YV YV YV YH YV YV YV YH YH YV YV YV YH YH YV YV YH Neutral-ground arresters YN YN YN YN YN YN YN * ) Sum of withstand s for empty units of arrester. 32 Technical information ABB Surge Arresters Buyer s Guide

6 Technical data for housings Figure 1 Figure 2 Figure 3 ABB Surge Arresters Buyer s Guide Technical information 33

7 Accessories Line terminals Earth terminals Drilling plans 1HSA L Aluminium 1HSA A Stainless steel 1HSA M Aluminium flag with other items in stainless steel Without insulating base Aluminium 1HSA B Stainless steel 1HSA N Aluminium Insulating base 1HSA H Epoxy resin 1HSA P Stainless steel M12 bolts for connection to structure are not supplied by ABB. Required threaded grip length is mm. 34 Technical information ABB Surge Arresters Buyer s Guide

8 Shipping data Rated Housing Number of arresters per crate One Three Six U r Volume Gross Volume Gross Volume Gross m 3 kg m 3 kg m 3 kg YV YV YV YV YH YV YV YV YH YH YV YV YV YH YV YV YH Neutral-ground arresters YN YN YN YN YN YN YN Each crate contains a certain number of arrester units and accessories for assembly and erection. A packing list is attached externally on each crate. Each separate crate is numbered and the numbers of all crates and their contents are listed in the shipping specification. ABB reserves the right to pack arresters in the most effective/economic combination. Alternate or non-standard crates may involve additional charges. The table above is to be seen as an approximation and specific data for deliveries may differ from the values given. ABB Surge Arresters Buyer s Guide Technical information 35

9 For more information please contact: ABB AB High Voltage Products Surge Arresters SE Ludvika, Sweden Phone: +46 (0) Fax: +46 (0) Copyright 2009 ABB All rights reserved NOTE! ABB AB is working continuously to improve the products. We therefore reserve the right to change designs, dimensions and data without prior notice. Section of 1HSM en Surge Arresters Buyer s Guide, Edition 7.1,