Three way valve renovation (no disassembly and verification required) cases

220kV substations in Taizhou, Ningbo, and Shandong

2026-06-24

Taizhou 220kV Jiaoxia Substation, Ningbo 220kV Yiting Substation, Shandong Jining 220kV Keyuan Substation and other Pinggao ZF11-252 GIS switchgear combined with circuit breaker chamber SF6 density relays are equipped with online verification three-way valves.