Scope of application:
Apply to extruded insulated power cable with U0≦1.8kV (without insulation shield layer)
—Single-core, two-core, three-core, four-core, five-core cables
—Copper or aluminum conductor
—No insulation shield layer, no metal tape shield or metal wire shield
—Armoured or unarmoured
—Metal tape armoured or metal wire armoured
Application:
Terminal: It is installed at the end of the running cable, connected to power supply devices such as overhead cables and load switch or busbar.
Straight-through joint: It is installed in the middle of the running cable, used to connect two sections of cable lines.
Technical parameter
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Conform to and pass JB/T7829-2006 rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) power cable heat shrinkable terminal and JB/T7830-2006 rated voltage 1kV (Um=1.2kV) to 10kV (Um=12kV) extruded insulated power cable heat shrinkable straight-through joint. |
Power frequency withstand voltage test
8kV, 5 min, no breakdown, no flashover
Power frequency withstand voltage test (wet state)
7.2kV, 1 min, no breakdown, no flashover
Constant voltage load cycle (in the air)
4.5kV, heated to 95-100℃, keep stable for 2 hours and circulate 60 times
Constant voltage load cycle (in water)
4.5kV, heated to 95-100℃, keep stable for 2 hours and circulate 10 times
Short circuit thermal stability
(cross-section of cable is 400 square millimeters）
40.9kA, 3s, 2 times
Short circuit dynamic stability
(cross-section of cable is 400 square millimeters）
177.0kA, 10ms, 1 time
Power frequency withstand voltage test
8kV, 5 min, no breakdown, no flashover
Serial Number
Item
Standard Parameter Value
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