Flame retardant BV wire

1. U0/U（/）450/750V 300/500V。，1.5 。，10%，，10%。2. 0，（D）25mm 4D，（D）25mm 6D。3. ZR ZA、ZB、ZC 。GB/T18380，ZA A ，ZB B ，ZC C 。The rated voltage U0/U (phase voltage/line voltage) of the cable is 450/750V and 300/500V. When used in a DC system, the nominal voltage of the system should not exceed 1.5 times the rated voltage of the cable. Note that the operating voltage of the system is allowed to exceed 10% of the nominal voltage for a long time. If the rated voltage of the cable is at least equal to the nominal voltage of the system, the cable can be used at an operating voltage higher than 10% of the rated voltage. 2. The laying temperature of the cable should not be lower than 0 ℃. The allowable bending radius for cables with an outer diameter (D) less than 25mm should not be less than 4D, and for cables with an outer diameter (D) of 25mm or more, the allowable bending radius should not be less than 6D. 3. Flame retardant wires are divided into three flame retardant grades: ZA, ZB, and ZC, based on the original universal name ZR. According to the GB/T18380 combustion test regulations for bundled wires or cables, ZA represents Class A test method, ZB represents Class B test method, and ZC represents Class C test method.