Medium Voltage Cables Cu or Al/XLPE/CTS/PVC

This cable is used to transmit power on the power transmission and distribution line of A.C.50Hz, rated voltage 36kV or lower. They are appropriate for indoor installations: mostly in power supply stations and outdoors: in cable ducts, underground, and on cable trays for industries, switch-boards and power stations.

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Medium Voltage Cables

Email：info@zmlcable.com

Introduction
This cable is used to transmit power on the power transmission and distribution line of A.C.50Hz, rated voltage 36kV or lower. They are appropriate for indoor installations: mostly in power supply stations and outdoors: in cable ducts, underground, and on cable trays for industries, switch-boards and power stations.

Instruction of application
Rated Voltage:

● 3.6/6 (7.2) kV

● 6.0/10(12) kV

● 8.7/15(17.5) kV

● 12/20(24) kV

● 18/30(36) kV

● 21/35 kv

●26/35 kv

Conductor
copper/aluminum conductor
Class 2 stranded circular or circular compacted

Semi-Conductive Layer for Conductor
Semi-conductive material

Insulation
XLPE (Cross-Linked Polyethylene)

Semi-Conductive Layer for Insulation
Semi-conductive material

Metallic screen
Copper wires / Copper Tape / Copper Wire & Tape

Outer Sheath
PVC (Polyvinyl Chloride)
The conductor Semi-Conductive Layer, XLPE insulation and the insulation Semi-Conductive Layer are extruded simultaneously in one process using triple extrusion method (Continuous Vulcanization Line). Triple extrusion method not only assures clean interfaces between the insulation and stress control layers, but also assures a construction free of Partial Discharge with high operational reliability.

The Main Technical Parameter Of The Cable
1） Cable conductor DC resistance: See the table 1-1
2） Partial discharge test： See the table 1-2
3） AC voltage test: See the table 1-3
4） Rated Voltage，Core Numbers & Nominal Cross-section Area : See the table1-4

Table 1-1 Max. DC resistance of cable conductor at 200°C

Nominal Area of Conductor （mm2）		16	25	35	50	70	95	120	150
Cu（Ω/km）	Non tinned	1.15	0.727	0.524	0.387	0.268	0.193	0.153	0.124
Cu（Ω/km）	Tinned	1.16	0.734	0.529	0.391	0.270	0.195	0.154	0.126
Al （Ω/km）		1.91	1.20	0.868	0.641	0.443	0.320	0.253	0.206
Nominal Area of Conductor （mm2）		185	240	300	400	500	630	800	1000
Cu （Ω/km）	Non tinned	0.0991	0.0754	0.0601	0.0470	0.0366	0.0283	0.0221	0.0176
Cu （Ω/km）	Tinned	0.100	0.0762	0.0607	0.0475	0.0369	0.0286	0.0224	0.0177
Al （ Ω/km）		0.164	0.125	0.100	0.0778	0.0605	0.0469	0.0367	0.0291

Table 1-2 Test Voltage & Max. Discharge capacity of cable

Rated Voltage (kV)	3.6/6	6/6 6/10	8.7/10 8.7/15	12/20	18/30	21/35	26/35
Test Voltage （kV）	6.23	10.38	15.05	20.76	31.14	36.33	44.98
Discharge capacity （pC）	10	10	10	10	10	10	10

Table 1-3 AC voltage test of cable

Rated Voltage kV	3.6/6 3.6/10	6/6 6/10	8.7/10 8.7/15	12/20	18/30	21/35	26/35
Test Voltage kV	12.5	21	30.5	42	63	73.5	91
Test Time min	5	5	5	5	5	5	5

Table 1-4 Rated Voltage, Core Numbers & Nominal Cross-section Area

U0/Um Area mm2		3.6/6	6/6 6/10	8.7/10 8.7/15	12/20	18/20 18/30	21/35	26/35
Core No.	1	25-630	25-630	35-630	35-630	50-630	50-630	50-630
Core No.	3	25-400	25-400	35-400	35-400	50-400	50-400	50-400

Key words:

Medium Voltage Cable

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