1. When the insulation resistance of the flat cable is converted to a length of 1km and the temperature is 20 ℃, the power core should be no less than 30MΩ / km.
2. For the voltage test of the flat cable, the power wire cores should be able to withstand 50Hz and 2500V voltage test for 5 minutes, and the control wire cores should be able to withstand AC 50Hz and 1500V voltage tests.
3. The delivery length of the flat cable should not be less than 150m, and the delivery of short length cables with a length of not less than 35m is allowed, and the delivery quantity should not exceed 10% of the total delivery length. Length of cable delivery.