RVVZ power cord 3&# 215; 1.0 RVVZ power cable 3&# 215; zero point seven five

RVVZ power cable 3 × 1.0 RVVZ power cable 3 × 0.75

ZRVVR RVVZ ZR-RVV communication flame-retardant flexible cable This product is suitable for use in power transmission and distribution systems of communication bureaus (stations) and high-rise buildings.

Product standard: YD/T1173-2001

Product model: ZA-RVV (ZRRVV ZRVVR RVVZ) flame retardant flexible cable for communication power supply

ZA-RVV22 (ZRRVV22 ZRVVR22 RVVZ22) Flame retardant steel tape armored flexible cable for communication power supply

This product is suitable for overhead, pipeline, indoor cable trench, and underground direct burial.

RVVZ power cable 3 × 1.0 RVVZ power cable 3 × 0.75 flame retardant performance

Under the specified test conditions, when the sample is burned and the test source is removed, the spread of the flame is only within a limited range, and the residual flame or burn can extinguish on its own within a limited time.

rated voltage

The rated voltage is the reference voltage used for cable design and electrical performance testing.

The rated voltage is represented by U0 and U, with the unit of V.

U0- the effective value of the voltage between any edge conductor and 'ground' (the metal sheath or surrounding medium of the cable).

U - the effective value of voltage between any two conductors in a multi-core or single core cable system,

When used in communication systems, the rated voltage of the cable should be at least equal to the nominal voltage of the cable system being used. This condition applies to both U0 and U values. 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: The operating voltage of the system is allowed to exceed 10% of the nominal voltage of the system 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 a working voltage 10% higher than the rated voltage.

Use characteristics

1. Rated working voltage of cable: 450F/50V, 600/1000V.

2. The long-term operating temperature of cable conductors is 70 ℃.

3. The ambient temperature during cable laying should not be lower than 0 ℃.

4. The minimum bending radius for non armored cables is 6 times the outer diameter for flame-retardant cables, and 20 times the outer diameter for armored cables.

Copper weight X copper price calculation:
Wire diameter ÷ 2=1.25X1.25X3.14
=Square number X number of wires X0.89X copper price+10% processing fee at that time.
Formula for calculating the cost price of rubber sheathed cables
Square X1.83=weight of copper X current copper price+price of rubber (weight X 0.4 yuan/jin)=cost price+10% processing fee
The price of cables=manufacturing material cost+fixed expenses+taxes+business expenses+profit
Manufacturing material cost=Material cost * (1+Material consumption) (Material cost is the theoretically calculated value)
Fixed costs vary depending on the situation of each company, generally including production wages, management wages, utilities, repair costs, depreciation costs, rent, and transportation costs
Calculation formula for current carrying capacity
Estimation mnemonic
Multiply 2.5 by 9 and subtract one from the top to follow the order.
Thirty five times three and a half, in pairs, subtract five points.
Conditions are subject to change and conversion, with high temperature copper upgraded at a 10% discount.
The number of pipes passing through is 2-34, with a full load flow of 876.