Zhengzhou Hengtian Special Cable Co., Ltd.

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Telephone:+86-371-69972000
Address: Xinzheng Xingang Industrial Park, Zhengzhou, China
Email：sales@hengtiantelan.com.cn

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Concentric conductor power cable

Productcharacteristicsandapplication Theproductisapplicableforthepowertransmissionunderratedvoltageof0.6/1kVandthebelowpowerline. ExecutiveStandardsEnterprisestandard Applicationcharacteristics1.Thera

Classification:

Power cable

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Description

Product characteristics and application

The product is applicable for the power transmission under rated voltage of 0.6/1kV and the below power line.

Executive Standards

Enterprise standard

Application characteristics

1 .The rated voltage U0/U is 0.6/1 kV.
2. The maximum long term admissible working temperature of cable conductor: 90t for the cross-linked polyethylene insulation; 70℃ for the PVC insulation.
3. The maximum temperature of conductor in cable short circuit (not more than 5s at longest duration): 250℃ for the cross-linked polyethylene insulated cable; 160℃ for the PVC insulated cable.
4. Layout ambient temperature shall not be lower than O℃，the cables shall be pre-heated for the layout when it is lower than 0℃.
5. Allowable bending radius of cable: single core cables shall not be lower than 20 times of outside diameter of cable; multi-core cables shall be not less than 15 times of outside diameter of cable.
6. Product cable shall undergo 3500V power frequency voltage test for 5min without breakdown.
7. The DC resistance of conductor at 20℃ is consistent with the requirements of GB3956 standard.
8. The cable is in the nature of low but uniform positive (negative) sequence and zero sequence working impedance which is of great advantage to improve the power supply quality-
9. Compared with the forth core of the common quadded cable, the concentric conductor's electric compression resistant value is much lower at zero sequence operating conditions. This is helpful for the sensitive reaction of the motor
short circuit protection devices so that the safe operation of the correlated cable devices can be guaranteed.
10. It has strong capability of electromagnetic interference resistance and lightning strike resistance.
11.The combustion characteristic of cables: inflaming retarding cables shall undergo burning test of beam forming specified in GB/T18380.3. Fire-resistance cables shall undergo fire-resistance property test specified in GB12666.6 (IEC331).

Structure of Cable

Product model specifications

Type		Name	No.of cores	Nominal cross-sectional area
Copper core	Aluminum core	Name	No.of cores	Nominal cross-sectional area
VV-T YJV-T	VLV-T YJLV-T	Copper core or aluminum core PVC insulated PVC sheathed concentric conductor power cable	3+1(T) 4+1(T) 3+1+1(T)	4.0~300mm²
VV22-T YJV22-T	VLV22-T YJLV22-T	Copper core or aluminum core PVC insulated steel tape armored PVC sheathed concentric conductor power cable
VV32-T YJV32-T	VLV32-T YJLV32-T	Copper core or aluminum core PVC insulated small gauge wire armored PVC sheathed concentric conductor power cable
VV42-T YJV42-T	VLV42-T YJLV42-T	Copper core or aluminum core PVC insulated rough gauge wire armored PVC sheathed concentric conductor power cable
ZR-VV-T ZR-YJV-T	ZR-VLV-T ZR-YJLV-T	Copper core or aluminum core PVC insulated PVC sheathed concentric conductor inflaming retarding power cable
ZR-VV22-T ZR-YJV22-T	ZR-VLV22-T ZR-YJLV22-T	Copper core or aluminum core PVC insulated steel tape armored PVC sheathed concentric conductorinflaming retardingmower cable
ZR-VV32-T ZR-YJV32-T	ZR-VLV32-T ZR-YJLV32-T	Copper core or aluminum core PVC insulated small gauge wire armored PVC sheathed concentric conductor inflamingretarding rower cable
ZR-VV42-T ZR-YJV42-T	ZR-VLV42-T ZR-YJLV42-T	Copper core or aluminum core PVC insulated rough gauge wire armored PVC sheathed concentric conductor inflamingretarding power cable
NH-VV-T NH-YJV-T	-	Copper core PVC insulated PVC sheathed concentric conductor fire-resistance power cable
NH-VV22-T NH-YJV22-T	-	Copper core PVC insulated steel tape PVC sheathed concentric conductor fire-resistance power cable
NH-VV32-T NH-YJV32-T	-	Copper core PVC insulated small gauge wire PVC sheathed concentric conductor fire-resistance power cable
NH-VV42-T NH-YJV42-T	-	Copper core PVC insulated rough gauge wire PVC sheathed concentric conductor fire-resistance power cable