Metal Oxide Surge Arrester

Specifications

Main guaranteed technical prticulars of MOA which have passed KEMA type test according to IEC 60099-4 and ANSI standard

Typical technical parameter of metal oxide surge arresters

System nominal voltage(kV):33
Type code of MOA: YH10W-30/90
System highest voltage(kV):36
Rated voltage of arresters(Ur)(kV):30
Continuous operationg voltage(Ur)(kV):24
Nominal discharge current(In)(kV):10
High current 4/10 impulse withstand(kA):100
2ms rectangular current(A):250
Steep current impulse residual voltage(kV):99
Lightning impulse residual voltage(kV)
5kA: 85
10kA: 90
20kA: 101
Switching current impulse residual voltage(kV):69

Lind discharge class:I
Pressure relief class:B, 20
Insulation impulse withstand voltage(kV): 170
Power frequency withstand voltage(kV):95
Max.External RIV(V):<=500
Max.Partial discharge(PC):<=10
Creepage distance(mm):1007

Note:If arrester with porcelain housing, type code should not include"H". We can produce both in porcelain housing and polymeric housing.