18/30(33)KV stranded aluminum conductor XLPE insulated steel tape armored underground power cable

Specifications

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33KV medium voltage steel tape armored power cable

 

Application:
It is used to transmit and distribute power in power transmission and distribution system of 35kV or lower. It is generally applied to the fields including power, construction, mines, metallurgy, petrochemical industry and communication in complete replace of oil immersed paper insulated power cable and in partial replace of PVC insulated power cable.
Using features:
1. Rated voltage: Uo/U: 3.6/6KV 6/10(11)KV 8.7/15KV 12/20(24)KV 18/30(33)KV 26/35(36)KV

2. No. Of core: Single-core, Three-core

3. The highest allowed operating temperature of conductor for long-term working is 90oC. In short-circuit (Max. Long-term is no more than 5 seconds). The highest temperature for conductor is no more than 250 degree.
4. D. C. Resistance of the conductor complies with the stipulations of international standar.
5. The environment temperature should be no lower than zero degree when lay. Otherwise it should be preheated.
6. The cable is laid without horizontal drop limit. The Min. Bending radius of cables should be no smaller than 12 times of cable outer diameter.
7. Working Frequency Voltage Test:
For cable with Uo of 3.6kV or lower: 2.5Uo+2kV/5min without puncture.
For cable with Uo of 3.6Kv~18kV: 3.5Uo/5min without puncture.
For cable with Uo of 21kV and 26 kV: 2.5Uo/30min without puncture.

 

Nominal cross sectional area of conductor	Insulation thickness	Inner Sheath thickness	Steel wire thickness	Outer Sheath thickness	Approx diameter of cable	Approx.weight of cable		D.C.resistance of conductor 20°C		Parcial discharge test 1.5Uo	Testing voltage(a.c.)	Current rating (A)
						Cu	Al	Cu	Al			In air		Direct in ground
mm²	mm	mm	mm	mm	mm	Kg/km	Kg/km	Ω/km	Ω/km	pc	Kv/5min	Cu	Al	Cu	Al
25	8.0	1.4	2.5	2.5	50	4168	3712	≤0.7270	≤1.2000	≤20	21	120	90	125	100
35	8.0	1.4	2.5	2.6	52	4648	4014	≤0.5240	≤0.8680	≤20	21	140	110	155	120
50	8.0	1.5	2.5	2.7	55	5280	4422	≤0.3870	≤0.06410	≤20	21	165	130	180	140
70	8.0	1.5	2.5	2.8	59	6940	5702	≤0.2680	≤0.4430	≤20	21	210	165	220	170
95	8.0	1.6	2.5	3.0	63	8194	6473	≤0.1930	≤0.3200	≤20	21	255	200	265	210
120	8.0	1.7	2.5	3.1	67	9269	7100	≤0.1530	≤0.2530	≤20	21	290	225	300	235
150	8.0	1.7	3.15	3.2	70	10466	7785	≤0.1240	≤0.2060	≤20	21	330	255	340	260
185	8.0	1.8	3.15	3.3	76	11883	8534	≤0.0991	≤0.1640	≤20	21	375	295	380	300
240	8.0	1.9	3.15	3.5	81	14147	9741	≤0.0754	≤0.1250	≤20	21	435	345	435	345
300	8.0	2.0	3.15	3.7	86	16495	10923	≤0.0601	≤0.1000	≤20	21	495	390	485	390

 

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