Xlpe Insulated Power Cable

Technical Performance

The maximum rated temperature for PVC insulated cable conductors is 70°C, and during a short circuit (not exceeding 5 seconds) the maximum temperature of the cable conductor should not exceed 160°C. For XLPE insulated cable conductors, the maximum rated temperature is 90°C, and during a short circuit (not exceeding 5 seconds) the maximum temperature of the cable conductor should not exceed 250°C. When installing cables with PVC insulation or sheathing, the ambient temperature should not be lower than 0°C. The minimum bending radius can be found in Table 1-1.

Note:D---cable

AC voltage test: 
For power cables with U0 of 1~1.8KV, the corresponding power frequency test voltage is 2.5U0 2KV, and it should not break down for 5 minutes. For power cables with U0 of 3.6~18KV, the corresponding power frequency test voltage is 3.5U0, and it should not break down for 5 minutes. For power cables with U0 of 21~26KV, the corresponding power frequency test voltage is 2.5U0, and it should not break down for 30 minutes. The specific routine test voltages are shown in Table 1-2:

Partial Discharge Test:

Cables with cross-linked polyethylene insulation and a rated voltage U0 of 1.8kV or higher should go through a partial discharge test. At 1.73 times U0, the partial discharge shouldn't go over 5PC.

Model and Name (see Table 1-3)