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Cable for wind power generation

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add time: 2016-01-28 16:10:17
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introduction

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1 scope of application

Rated voltage 1.8/3kV and less for wind power generation with twist resistant soft cable is suitable for grid connected wind turbine power transmission and electric control, particularly suitable for installation in cross connection between the cabin and the tower barrel need to bear frequently distorted requirements of special parts, mainly used for generator stator winding and rotor winding to ground voltage transformer of the power transmission.

2 implementation standards

Product implementation by the national electric wire and cable quality supervision and Inspection Center for the development of technical specifications TICW/01-2009 "rated voltage 1.8/3kV and the following wind power generation with the twisted flexible cable".

3 type of cable, rated voltage and name, see Table 1

Table 1 cable model, rated voltage and name

 

model
Rated voltage
Nema
FDEF-25(-40)
450/750V
Copper core rubber insulated chloroprene rubber sheath for wind power generation (cold) distortion resistance flexible cable
FDES-25(-40)
450/750V
Copper core rubber insulated thermoplastic elastomer sheath for wind power generation (cold) distortion resistance flexible cable
FDGG-40(-55)
0.6/1kV;
1.8/3kV
Copper core silicone rubber rubber insulation silicone rubber sheath wind power generation with cold resistant (resistant to cold) and twisted flexible cable
FDGU-40(-55)
0.6/1kV;
1.8/3kV
Copper core silicone rubber rubber insulation polyurethane elastomer sheath wind power generation with cold resistant (resistant to cold) resistant twisted flexible cable
FDEU-40(-55)
0.6/1kV;
1.8/3kV
With the cold copper conductor EPR insulated polyurethane elastomer sheath of wind power generation (cold resistant) twist resistant soft cable
FDEG-40(-55)
0.6/1kV;
1.8/3kV
With the cold copper conductor EPR insulated silicon rubber sheathed wind power generation (cold resistant) twist resistant soft cable
FDEH-25(-40)
0.6/1kV;
1.8/3kV
Copper core rubber insulated chlorosulfonated polyethylene rubber sheath for wind power generation (cold) distortion resistance flexible cable
FDES-25(-40)
0.6/1kV;
1.8/3kV
Copper core rubber insulated thermoplastic elastomer sheath for wind power generation (cold) bend resistance flexible cable
Note: flame retardant cable in front of the model plus: ZC-

 

4 the cable specifications are shown in Table 2

Table 2 cable specifications

 

型号
Rated voltage
Core number
Nominal sectionmm2
FDEF-25(-40)
FDES-25(-40)
FDGG-40(-55)
FDGU-40(-55)
FDEU-40(-55)
FDEG-40(-55)
FDEH-25(-40)
FDES-25(-40)
450/750V
0.6/1kV
1
1.5~400
2
1~25
3
1~300
3+1
4~185
4
1~300
5
1~25
6~36
1.5~4
1.8/3kV
1
10~400
3
10~240

 

 

5 main technical parameters

5.1 the direct current resistance of the finished cable conductor 20 is in accordance with the requirements of GB/T fifth in the 3956 kinds of copper conductor.

5.2 the insulation resistance of the finished cable is in accordance with the provisions of Table 3.

Table 3 insulation resistance

Rated voltage
Cable specifications
20℃insulation resistance
MΩ·km
Insulation resistance at working temperature
MΩ·km
450/750V
0.6/1kV
35mm2And below
150
0.15
50~150mm2
100
0.10
185~400mm2
80
0.08
1.8/3kV
35mm2And below
250
0.25
50~150mm2
200
0.20
185~400mm2
150
0.15
 

5.3 finished cable can withstand the test of the power frequency voltage as specified in Table 4 5min without breakdown.

Table 4 voltage test of finished products

Rated voltage
Test voltagekV
450/750V
2.5
0.6/1kV
3.5
1.8/3kV
6.5
 

5.4 rated voltage 450/750V finished cable insulation wire core (10 ~ 15m long finished cable specimen) can withstand the temperature of the environment 2.5kV immersion test 5min not breakdown.

To 5.5 h test voltage: rated voltage 0.6/1kv and 1.8/3kV finished cable insulation wire core (10 ~ 15m long finished cable specimens) subjected to the environment temperature under, soaking for at least 1H, the test voltage 4U0 power frequency voltage test voltage gradually increased and lasted for 4 hours, during the test no breakdown phenomenon.

5.6 impact voltage test: rated voltage 1.8/3kV cable for impulse voltage test. Finished cable (10 ~ 15m length of finished cable specimens) in the experimental temperature is higher than the maximum operating temperature of the conductor 5 DEG to 10 DEG C, in accordance with the test methods specified in GB / T 3048.13 and subjected to peak for 40kV impulse voltage test. Each cable insulation line core can withstand the positive and negative polarity of the ten impact voltage test does not breakdown.

5.7 finished cable can withstand the cable total copper conductor cross section * 15N (Newton) weight weight, 7 * 24 hour load test on the ambient temperature of 23 + 5. After the test, the cable sheath, the insulation surface without crack, the conductor of the cable direct current resistance to meet the requirements of the GB/T 3956 standard.

5.8 12m length of finished cable under ambient temperature conditions, can withstand + 1440 ~ a total of 10000 times the torsion test; ordinary type, cold type and resistance to cold type cable respectively in the low temperature of 25 DEG C, - 40 DEG C and - 55 DEG C, can withstand + 1440 ~ a total of 2000 times of low temperature torsion test.

Note: clockwise rotation 1440 degrees, then counterclockwise turn the same angle so that the cable is restored to its original state, then counterclockwise rotation of the 1440 degrees clockwise again turn the same angle so that the cable is restored to its original state, this is a cycle (a).

5.9 finished cable can pass the GB/T 19380.11-2008 provisions of the single burning test. The flame retardant cable can be specified by 19380.31-2008 GB/T as the corresponding requirements of the beam cable burning test.

 

6 cable usage characteristics

6.1 the rated voltage of the cable U0/U are: 450/750V, 0.6/1kV, 1.8/3kV.

6.2 long term operating temperature of the cable conductor is: 90.

6.3 the minimum bending radius of the cable is 6 times of the diameter of the cable.

6.4 cable to adapt to the minimum ambient temperature, ordinary type: -25 C, cold type: -40 C, cold type: -55.

6.5 the maximum torsion angle of the cable is 180 degrees /m.

Flame retardant cable 6.6 is a single flame retardant, special requirements for flame retardant bundles.

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