China Yifa 10-110kv Polymeric Housed Metal Oxide Arrest with Release

General
Polymeric housed metal oxide arrester of 10-35kv with release is equipped with special insulated backing plate and mounting support,upper bolt of release is connected with the bottom of arrester directly,and the lower bolt is connected with the earth wire.
Release of arrester is aimed at automatic tripping when the arrester comes across failure,power frequency short-circuit current drives the release to operate,and earth terminal of release will trip automatically,so as to disconnect the failed arrester from the system,operator should change it.In order to accomplish this object,the release must be featured with quick-acting characteristic and capability of withstanding prospective current impulse and operating duty.
Structure feature
The release must be able to operate at fault current,and the operating characteristics are in accordance with requirements stipulated by standard Gb 11032,we have carried out the operating ampere-second characteristic test at power frequency current 800A,20A,and 5A(effective value) in High Power Test Station of Xi'an Electro ceramic Research institute,test results as shown in the table.

35-110KV Main technical parameters

ModelSystem voltageLatch voltageContinuous operating voltageDC feference voltage not smaller than1/5us steep residual voltage not exceed8/2us lightning residual voltage not exceedHY10W-96/2501109675140280250HY10W-100/26011010078145291260HY10W-102/26611010279.6148297266HY10W-108/28111010884157315281HY10W-192/500220192150280560500

Model30/60us operating residual voltage not exceed2ms square wave discharge capacity4/10us impulse discharge capacityResistive current at continuous operating voltage not exceedHY10W-96/250213400-600100200HY10W-100/260221400-600100200HY10W-102/266226400-600100200HY10W-108/281239400-600100200HY10W-192/500426600100200

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