1. Fuse Switch Combination Panel,Ring Main Unit 2. KEMA type test, IEC ... gas tightness and uniformity of all gas tanks.The fully automatic and integral helium leak detection system, made by SEILER Vakuumtechnik ... Hz 50,60 50,60 Rated current A ≤125A ≤100ARated transfer current A 1800 1400Mechanical lifetimeOps 5000 5000Protection Degree IP4X IP4X