2022 High quality High Resistance Grounding Resistor - Neutral Grounding Resistor, NGR EGR – Wepower
2022 High quality High Resistance Grounding Resistor - Neutral Grounding Resistor, NGR EGR – Wepower Detail:
█ Product Features
1. Voltage range：0.33 ～110KV
2. Rated Current: 1～5000A
3. Resistance Range：0.1Ω∽1500Ω
4. Working time: 5s，10s，30s，60s，10mins，working continuous
5. Ingress Protection：IP20～IP55
6. Installation：Indoor、Outdoor;
7. Auxiliary parts: disconnecting switch, circuit breaker, CT, PT etc.
8. Resistor temperature rise:
1）Rated time :10s, maximum temperature rise≤760K；
2）Rated time : 10s<t<10mins, maximum temperature rise ≤610K;
3）Working continuous, maximum temperature rise ≤385K;
█ Wire Diagram
The electrical connection mode between neutral point three-phase AC power grid and earth, called grounding mode for neutral point. Neutral point grounding resistor principle diagram as follows:
Neutral point of transformer, the grounding resistor has two ways:
On the secondary side the transformer is a star connection method, the neutral point grounding resistor straight. (see Figure.1)
On the secondary side the transformer is a triangle connection method, the neutral point grounding transformer grounding through grounding transformer. (see Figure. 2)
█ Production Selection Table
6.3KV series neutral grounding resistor selection table, as following:
|
Type |
Neutral Voltage |
Resistance |
Fault Current |
Rated Time |
Protection Class |
Enclosure |
|||
|
Line Voltage |
Phase Voltage |
Length |
Width |
High |
|||||
|
KV |
KV |
[Ω] |
[A] |
[s] |
IP |
[mm] |
[mm] |
[mm] |
|
|
TNGR |
6.3 |
3.64 |
72.8 |
50 |
10 |
IP2X |
800 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
36.4 |
100 |
10 |
IP2X |
800 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
18.2 |
200 |
10 |
IP2X |
800 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
14.6 |
250 |
10 |
IP2X |
800 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
12.1 |
300 |
10 |
IP2X |
800 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
9.1 |
400 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
7.3 |
500 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
6.1 |
600 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
4.6 |
800 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
3.6 |
1000 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
3.0 |
1200 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
2.6 |
1400 |
10 |
IP2X |
1000 |
1000 |
1180 |
|
TNGR |
6.3 |
3.64 |
2.3 |
1600 |
10 |
IP2X |
1000 |
1000 |
1180 |
10.5KV series neutral grounding resistor selection table，as following:
|
Type |
Neutral Voltage |
Resistance Value |
Fault Current |
Rated Time |
Protection |
Enclosure |
|||
|
Line Voltage |
Phase Voltage |
Length |
Width |
High |
|||||
|
KV |
KV |
[Ω] |
[A] |
[s] |
IP |
[mm] |
[mm] |
[mm] |
|
|
TNGR |
10.5 |
6.06 |
121.2 |
50 |
10 |
IP2X |
800 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
60.6 |
100 |
10 |
IP2X |
800 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
30.3 |
200 |
10 |
IP2X |
800 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
24.3 |
250 |
10 |
IP2X |
800 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
20.2 |
300 |
10 |
IP2X |
800 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
15.2 |
400 |
10 |
IP2X |
1000 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
12.2 |
500 |
10 |
IP2X |
1000 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
10.1 |
600 |
10 |
IP2X |
1000 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
7.6 |
800 |
10 |
IP2X |
1200 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
6.1 |
1000 |
10 |
IP2X |
1200 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
5.1 |
1200 |
10 |
IP2X |
1200 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
4.3 |
1400 |
10 |
IP2X |
1200 |
1000 |
1480 |
|
TNGR |
10.5 |
6.06 |
3.8 |
1600 |
10 |
IP2X |
1200 |
1000 |
1880 |
|
TNGR |
10.5 |
6.06 |
3.4 |
1800 |
10 |
IP2X |
1200 |
1000 |
1880 |
20KV series neutral grounding resistor selection table，as following：
|
Type |
Neutral Voltage |
Resistance Value |
Fault Current |
Rated Time |
Protection |
Enclosure |
|||
|
Line Voltage |
Phase Voltage |
Length |
Width |
High |
|||||
|
KV |
KV |
[Ω] |
[A] |
[s] |
IP |
[mm] |
[mm] |
[mm] |
|
|
TNGR |
20 |
11.55 |
231 |
50 |
10 |
IP2X |
1300 |
2300 |
2300 |
|
TNGR |
20 |
11.55 |
115.5 |
100 |
10 |
IP2X |
1300 |
2300 |
2300 |
|
TNGR |
20 |
11.55 |
57.7 |
200 |
10 |
IP2X |
1300 |
2500 |
2300 |
|
TNGR |
20 |
11.55 |
46.2 |
250 |
10 |
IP2X |
1300 |
2700 |
2300 |
|
TNGR |
20 |
11.55 |
38.5 |
300 |
10 |
IP2X |
1300 |
2700 |
2300 |
|
TNGR |
20 |
11.55 |
28.9 |
400 |
10 |
IP2X |
1300 |
2500 |
2300 |
|
TNGR |
20 |
11.55 |
23.1 |
500 |
10 |
IP2X |
1300 |
2500 |
2300 |
|
TNGR |
20 |
11.55 |
19.3 |
600 |
10 |
IP2X |
1300 |
2700 |
2300 |
|
TNGR |
20 |
11.55 |
14.4 |
800 |
10 |
IP2X |
2100 |
2500 |
2000 |
|
TNGR |
20 |
11.55 |
11.6 |
1000 |
10 |
IP2X |
2100 |
2500 |
2000 |
|
TNGR |
20 |
11.55 |
9.6 |
1200 |
10 |
IP2X |
2100 |
2500 |
2000 |
|
TNGR |
20 |
11.55 |
8.3 |
1400 |
10 |
IP2X |
2100 |
2500 |
2000 |
|
TNGR |
20 |
11.55 |
7.2 |
1600 |
10 |
IP2X |
2100 |
2700 |
2000 |
|
TNGR |
20 |
11.55 |
6.4 |
1800 |
10 |
IP2X |
2100 |
2700 |
2000 |
|
TNGR |
20 |
11.55 |
5.8 |
2000 |
10 |
IP2X |
2100 |
2700 |
2000 |
35KV series neutral grounding resistor selection table，as following：
|
Type |
Neutral Voltage |
Resistance Value |
Fault Current |
Rated Time |
Protection |
Enclosure |
|||
|
Line Voltage |
Phase Voltage |
Length |
Width |
High |
|||||
|
KV |
KV |
[Ω] |
[A] |
[s] |
IP |
[mm] |
[mm] |
[mm] |
|
|
TNGR |
35 |
20.2 |
404.6 |
50 |
10 |
IP2X |
1600 |
2600 |
2524 |
|
TNGR |
35 |
20.2 |
202.3 |
100 |
10 |
IP2X |
1600 |
2600 |
2524 |
|
TNGR |
35 |
20.2 |
101.2 |
200 |
10 |
IP2X |
1600 |
2800 |
2524 |
|
TNGR |
35 |
20.2 |
80.9 |
250 |
10 |
IP2X |
1600 |
3000 |
2524 |
|
TNGR |
35 |
20.2 |
67.4 |
300 |
10 |
IP2X |
1600 |
3000 |
2524 |
|
TNGR |
35 |
20.2 |
50.6 |
400 |
10 |
IP2X |
1600 |
2800 |
2524 |
|
TNGR |
35 |
20.2 |
40.5 |
500 |
10 |
IP2X |
1600 |
2800 |
2524 |
|
TNGR |
35 |
20.2 |
33.7 |
600 |
10 |
IP2X |
1600 |
3000 |
2524 |
|
TNGR |
35 |
20.2 |
25.3 |
800 |
10 |
IP2X |
2400 |
2800 |
2144 |
|
TNGR |
35 |
20.2 |
20.2 |
1000 |
10 |
IP2X |
2400 |
2800 |
2144 |
|
TNGR |
35 |
20.2 |
16.9 |
1200 |
10 |
IP2X |
2400 |
2800 |
2144 |
|
TNGR |
35 |
20.2 |
14.5 |
1400 |
10 |
IP2X |
2400 |
2800 |
2144 |
|
TNGR |
35 |
20.2 |
12.6 |
1600 |
10 |
IP2X |
2400 |
3000 |
2144 |
|
TNGR |
35 |
20.2 |
11.2 |
1800 |
10 |
IP2X |
2400 |
3000 |
2144 |
|
TNGR |
35 |
20.2 |
10.1 |
2000 |
10 |
IP2X |
2400 |
3000 |
2524 |
Remark: For other technical parameters & requirements, please contact with our company’s business man.
Stainless steel resistors ,CT is optional(if other equipment like grounding transformer, isolating switch, vacuum contactor and the rated time ＞10S, the enclosure dimensions will be adjusted )
█ Main Executive Standard
• Specification for neutral-earth resistance in distribution system
• Insulation co-ordination of high voltage transmission and transformation equipment
• Degrees of protection provided by enclosure
• Current transformers
• High-voltage ceramic wall bushings technical specification
• High voltage post insulators ceramic material Part 1: Technical Specification
• High voltage test techniques Part 1: General requirements
• Requirements, Terminology and Test Procedure for Neutral Grounding Devices
█ Ordering Information
1. Rated voltage
2. Rated current
3. Resistance value
4. Rated time
5. Inlet and outlet way
6. Cabinet material、color
7. CT parameter
8. Grounding transformer parameter
9. Class of protection
10. Operating environment
11. Other special requirements, etc.
Product detail pictures:
Related Product Guide:
We have been committed to offering easy,time-saving and money-saving one-stop purchasing service of consumer for 2022 High quality High Resistance Grounding Resistor - Neutral Grounding Resistor, NGR EGR – Wepower , The product will supply to all over the world, such as: Argentina, Madrid, Ethiopia, So that you can utilize the resource from the expanding info in international trade, we welcome shoppers from everywhere on-line and offline. In spite of the good quality solutions we offer, effective and satisfying consultation service is supplied by our specialist after-sale service team. Product lists and detailed parameters and any other info weil be sent to you timely for your inquiries. So please make contact with us by sending us emails or call us if you have any questions about our corporation. ou may also get our address info from our web page and come to our company to get a field survey of our merchandise. We are confident that we are going to share mutual achievement and create strong co-operation relations with our companions in this marketplace. We're searching forward for your inquiries.
By Lydia from Norwegian - 2018.07.12 12:19
A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
By Madge from Mecca - 2018.06.21 17:11
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