Concentric Conductor Copper High Voltage Cable PVC Insulated Fire Resistant

Concentric Conductor Copper High Voltage Cable PVC Insulated Fire Resistant

1. Application
The product is suitable for electric power transmission and Distribution network circuit with rated voltage 0.6/1kV and including.
2. Product Characteristic
(1). It has lower and uniform positive (inverted) sequence and zero sequence impedance, which can Improve the quality of electricity supplied.
(2). Comparing with the fourth core of common 4-core cable, the reactance value of concentric Conductor is much lower than the working condition of zero sequence, which can improve Sensitive action of short-circuit auto-protection device and can ensure cable and relative equipment For safe operation.
(3). It has strong properties of anti-electromagnetic interference and anti-thunder strike.
(4). Five-core cable is suitable for power supply of TN-S and TN-C-X system.
3. Technical parameter
(1) D. C. Resistance of conductor is referenced to the cable with PVC insulation and sheath.
(2) The finished cable shall be subjected to A. C. Voltage of 50Hz 3500V 5min and result should not be breakdown.As far as single core is concerned, it should make voltage resistant test after immersing water.
 
(3) DC resistance value at 20 Centigrade.
Nominal cross sectional mm2 Ω/km at 20 Centigrade Ω/km of each sequence
 

Type		Designation	Number of core		Nominal Cross-section mm2
Copper conductor	Aluminum conductor
VV-T YJV-T	VV-T YJV-T	Copper(Al)core PVC (XLPE) insulated and sheathed round(flat)concentric power cable	3+1 (T)4+1  (T)		4~300
VV22-T YJV22-T	VLV22-T YJLV22-T	Copper(Al)core PVC (XLPE) insulated and sheathed steel tape armored round(flat)concentric power cable
VV32-T YJV32-T	VLV32-T YJLV32-T	Copper(Al)core PVC (XLPE) insulated and sheathed fine steel wire round(flat)concentric power cable
VV42-T YJV42-T	VLV42-T YJLV42-T	Copper(Al)core PVC (XLPE) insulated and sheathed thick steel wire round(flat)concentric power cable
Note: Include flame-retardant and fire-resistant type.
	Copper core	Aluminum core	Positive (negative)	Zoro sequence
4	4.564	7.336	0.0989	0.1479
6	3.049	4.564	0.0937	0.1380
10	1.812	3.049	0.0843	0.1320
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