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TGE Issued New Technical Parameters of Metal Oxide Varistors (High Gradient MOV)



No.12345
seriesHigh Gradient MOV
typeD71H21.4D78H35.4D86H21.4D99H21.4D115H21.4
suggested rated voltage (kV)5.75.75.75.55.5
MCOV (kV)4.84.84.84.74.7
diameter (mm)70.5±178±186±199±1.2115±1.2
height (mm)21.4±0.321.4±0.321.4±0.321.4±0.321.4±0.3
DC U1mA (kV)7.9±0.57.9±0.57.9±0.57.7±0.57.7±0.5
IL at 75% of U1mA(µA)≤20≤20≤20≤20≤20
Ures (kV)12.4±0.812.3±0.812.1±0.811.6±0.811.4±0.8
typical Ures / U1mA1.571.551.531.511.48
repetitive charge transfer Qrs (C)1.622.43.24
guaranted 2ms test current (A)8001000120015002000
max 2ms test current (A)8001000120016002000
4/10µs high current test (kA)100100100100100
nominal discharge current In (kA)1010202020
accelerated ageing test115℃       0.9*U1mA/√2        Kct ≤ 1.0




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