LHQ Power Line Overvoltage Limiting Cable Sheath Protector with ZnO Chip

Classification:Arrester Series

Inside Road & Administration Industry & Trading Garden,Houshan Industry Area,Fuzhou City,Fujian Province

0591-22806687 0591-22806697

0591-22806667

bs@china-grid.com.cn

Overview
Description:

Due to electromagnetic induction, the metal shield (or metal sheath) of the long-line high-voltage single-core power cable generates induction voltage, which leads to insulation aging, and at the same time reduces the insulation level, resulting in a decrease in cable life; once the induced voltage exceeds the set breakdown voltage value, The outer sheath is broken down to form a single-core cable multi-point ground fault.

Therefore, the power industry standard DL/T401 《Guidelines for the Selection of High Voltage Power Cables》 stipulates that a cable sheath protector must be used to limit the induced voltage and fault overvoltage on the power metal shield (or metal sheath).

Model Sys R.V
Kv (r.m.s)
Power frequency withstand voltage / time
Kv(r.m.s)
Residual voltage under 10kA lightning impulse current
≤kvp
DC voltage 2ms Rectangular Current Impulse A L Leakage current at 0.75U1mA ≤μA Model not marked by national standard JB/T8459
LHQ-6 6 1.9/4 4.6 2.1 400 80 50 BHQ、BYL、FBY、SHQ、BYLS、TBP-D
LHQ-10 10 3.6/4 8.7 4.0 400 107 50
LHQ-35 35 5/4 12 5.5 400 134 50
LHQ-110(Ⅰ) 110 5.3/4 12 5.8 400 188 50
LHQ-110(Ⅱ) 110 10/4 25 11.0 400 188 50
LHQ-220(Ⅰ) 220 6/4 15 6.5 400 188 50
LHQ-220(Ⅱ) 220 13.6/4 31 15.0 400 188 50
LHQ-500 500 7.5/4 18 8.3 400 134 50
Contact Us
0591-22806687 0591-22806697
0086-13950298099
0591-22806667
Inside Road & Administration Industry & Trading
      Garden,Houshan Industry Area,Fuzhou City,Fujian Province
Sampras@china-grid.com.cn
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