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ZRVVR RVVZ ZR-RVV communication with flame-retardant flexible cables
This product is applicable to communication bureau (station) and high-rise buildings, power transmission and distribution system using flame-retardant flexible cables.
Product standard: YD/T1173-2001,
Product Model: ZA-RVV (ZRRVV ZRVVR RVVZ) communication power with flame-retardant flexible cables
ZA-RVV22 (ZRRVV22 ZRVVR22 RVVZ22) communication power with flame-retardant steel tape armored flexible cables
This product is suitable for overhead, pipe, indoor cable trench, buried underground.
Flame retardant properties
Under specified test conditions, the specimen was burning, and after the test fire source is removed, the flame spread only within limits, the residual flame or residue burning in a limited period of time is self-extinguishing characteristics.
Rated voltage
The rated voltage cable design and electrical performance test with the reference voltage.
Rated voltage U0, U said that the unit as V.
U0-either an insulated conductor and the rms voltage between "ground" (the metal of the cable sheath or surrounding medium).
Rms voltage between any two phase conductors of the U-core cable or single-core cable system.
For AC system, the rated voltage of the cable should be at least equal to the nominal voltage of the cable system. The conditions are applicable to U0 and U-values.
When used for DC system, the system's nominal voltage should be less than cable rated voltage of 1.5 times.
Note: the operating voltage of the system allows more than 10% of the nominal voltage of the system for a long time. If the cable's rated voltage is at least equal to the nominal voltage of the system, the cable can be higher than 10% of the rated voltage of the operating voltage.
Usage characteristics
A cable rated working voltage the: 450F/50V 600/1000V.
2, the cable conductor operating temperature: 70 ° C.
3 The ambient temperature should be not less than 0 ℃.
4, the minimum bending radius: non-armored armored cable: flame retardant is 6 times the cable diameter, armored cable: 20 times the cable diameter.