Metal shielded power cable
Metal shielded power cable has strong anti-electromagnetic interference, anti-lightning and uniform …
Description：
I. Characteristics and uses
Metal shielded power cables are suitable for transmitting electric energy in power lines with rated voltage of 0.6/1 kV and below. This product has strong anti-electromagnetic interference, anti-lightning and uniform electric field, and improves the quality of power supply. It is especially suitable for places with precise electronic devices, such as computer center, Aerospace monitoring center, intelligent building, etc.
2. Implementation criteria:
Metal shielded power cables are designed and manufactured according to Q/HX-15.
1, conductor
2. Insulation of PVC (XLPE)
3, bag belt
4. PVC inner sheath
5. Metal shielding
6. PVC jacket
3. Type description:
Metal shielded power cables are only differentiated from XLPE insulated power cables and PVC insulated power cables in design structure by the "-P" suffix, such as: VV-P, YJV-P, YJLV22-P and so on.
4. Use characteristics:
Rated voltage Uo/U 0.6/1kV
The permissible operating temperature for a long time is consistent with the corresponding PVC insulated power cables or XLPE power cables.
Insulation property
Maximum in short circuit;
The impedance has low and uniform positive (inverse) sequence and zero sequence operating impedance, which is conducive to improving the quality of power supply.
The reactance value of reactance concentric conductor is much better than that of ordinary four-core cable under zero-sequence operation, which is beneficial to the sensitive operation of short-circuit automatic protection device, thus ensuring the safe operation of related equipment.
Anti-jamming ability has strong anti-electromagnetic interference and lightning strike performance.
Flame-retardant cables with combustion performance can withstand bundle combustion tests specified in GB12666.5 (IEC332-3).
Refractory cables can withstand the fire resistance test specified in GB12666.6 (IEC331).
The conductor resistance conforms to GB3956.
Withstand voltage performance
After 5 minutes of 3.5 kV power frequency voltage test.
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