transformer neutral point grounding protection device|neutral earthing resistors cabinet|arc-suppression coil-Baoding Weifan Electricity Technology Co.,Ltd
型号:
规格:
WF-B series of neutral grounding resistor components using resistance special, special formula stainless steel alloy, the main characteristics are:
①.Withstand high temperatures: melting point (1375-1500 ℃), the maximum temperature 1000 ℃;
②.High tensile strength: tensile strength 700MPa, at 900-1000 ℃ high temperature, mechanical strength remained unchanged;
③.High resistance: Resistance was 1.25μΩ.m, helps to reduce the size of the resistive element;
④.weighed resistance: resistance temperature coefficient of 1.05 × 10-4 / ℃, when 350 ℃ high temperature, the resistance increased only 4% (iron resistive element resistance increased by 24%), helping to ensure the protection of sensitivity;
⑤. Strong antioxidant capacity: at a high temperature of about 1000 ℃ still maintain good oxidation resistance. Suitable for polluting the environment;
⑥.High toughness: the dramatic changes in temperature operating conditions remain good toughness, not easy to break;
⑦.Type complete: In accordance with the size of the flow capacity with ribbon, grid, spiral wound type, rib-wound type. Wound smooth results and other types of resistive element.
WF-B series of neutral grounding resistors
1、Variety
①.With little resistance grounding resistor grid;
②.Distribution network in resistance grounding resistors;
③.Distribution network of high resistance grounding resistors;
④.High resistance generator neutral grounding resistors.
2、The product series
①.Voltage: 400V-69KV; ② allow flow: 5A-5000A; ③ nominal resistance:0.1Ω-1500Ω; ④ allow flow time: 10S, 30S, 60S, 10min continuous operation ⑤ into the round: progress under the lower bottom out, side into the side, measured out into the next; ⑥ installation location: indoors, outdoors; ⑦ allowable temperature rise: flow time of 10S, 30S, 60S when 760 ℃;. flow time was 10min when 610 ℃; continuous operation of 385 ℃; ⑧ zero sequence current transformer: the demand side optional.
Common technical parameters Model resistance cabinet
Type
System rated voltage（KV
Rated voltage resistance cabinet（KV
Short to allow flow（A
Nominal resistance（Ω（±10%）
Dimensions
W×D×H（mm）
Weight
kg
B6.3-100-10
6.3
3.64
100
36.4
1167*1067*1120
320
B6.3-200-10
6.3
3.64
200
18.2
320
B6.3-300-10
6.3
3.64
300
12.1
320
B6.3-400-10
6.3
3.64
400
9.09
320
B6.3-600-10
6.3
3.64
600
6.06
325
B6.3-1000-10
6.3
3.64
1000
3.64
330
B10-400-10
10
5.77
400
14.4
1167*1067*1270
340
B10-600-10
10
5.77
600
9.6
345
B10-1000-10
10
5.77
1000
5.77
350
B10.5-400-10
10.5
6.0
400
15
1167*1067*1270
340
B10.5-600-10
10.5
6.0
600
10
345
B10.5-1000-10
10.5
6.0
1000
6
350
B10.5-600-10Height
10.5
6.0
600
10
1000*800*2000
350
B35-200-10
35
20
200
100
（2*1346）*1524*2300
1250
B35-600-10
35
20
600
33.7
1250
B35-1000-10
35
20
1000
20
1250
B35-1300-10
35
20
1300
15.5
（2*1524）1524*2845
B35-2000-10
35
20
2000
10
1500
Check the test: when reliable equipment on, open the front panel with nameplate for, check the wiring inside the device, and note the following:
①. Charged money for all packaging materials must be removed from the box, in order to avoid the occurrence of a fire;
②. Carefully check whether the insulators, bushings, etc. are damaged, if found damaged parts, hard immediately contact haulers;
③. Check the tightening of the screw is indeed removed;
④. Check all electrical connections, make sure connections are secure and reliable;
⑤. All the fixing bolts are tightened;
⑥. Put into operation before the test, measuring the resistance of the resistive element, measure the insulation resistance, according to the standard frequency voltage withstand test. The test voltage is not more than 85% of the factory test voltage value;
⑦. Also good original cabinet front panel, ready to put into operation.
