ENR-SPA HS-2.8/7.5 Combined Cable Sheath Protector
1. Outline Dimension Drawing
2. Technical Specifications:
The ENR-SPA HS-2.8/7.5 type combined cable sheath protector adopts an integrated design, encapsulating both the overvoltage protector and high-voltage lead wire cable within high-quality insulating rubber material. It features a compact structure, small size, and easy installation.
The ENR-SPA HS-2.8/7.5 type combined cable sheath protector complies with GB11032-2000 and IEC 60099-4:1991 standards. It can be directly installed at cable terminals in cable branch boxes, ring main units, switching stations, or box-type substations. Its high-voltage lead wire is connected to the metal sheath of the power cable, and the grounding terminal is fixed to the grounding copper bar. It can replace traditional grounding protection boxes and is the preferred equipment for overvoltage protection of 10-35KV power cable metal sheaths.
3. Installation Diagram:
4. Relevant parameters are as follows:
System nominal voltage: 10-35kV
Residual voltage under 10kA lightning impulse current: 6.5kV
Power frequency withstand voltage/time: 4/5 kV/S
DC 1mA reference voltage: ≥3.25kV
Leakage current at 0.75 times DC 1mA reference voltage: ≤50μA
2mS square wave current capacity: 400A
Lead length: 600mm
Terminal: ￠8
Grounding bolt: M8
Material: Copper
5. Ordering Instructions:
The ENR-SPA HS-2.8/7.5 type combined cable sheath protector is generally ordered in sets of three, but can also be ordered individually.
