Quality Inspection for Aluminum Wire Resistance Calculator - Neutral Grounding Resistor, NGR EGR – Wepower
Quality Inspection for Aluminum Wire Resistance Calculator - 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:
Our products and solutions are greatly recognized and trustworthy by customers and may fulfill constantly changing financial and social requires for Quality Inspection for Aluminum Wire Resistance Calculator - Neutral Grounding Resistor, NGR EGR – Wepower , The product will supply to all over the world, such as: Istanbul, Netherlands, Thailand, We hope we can establish long-term cooperation with all of the customers, and hope we can improve competitiveness and achieve the win-win situation together with the customers. We sincerely welcome the customers from all over the world to contact us for anything you need to have!Welcome all customers both at home and abroad to visit our factory. We hope to have win-win business relationships with you, and create a better tomorrow.
By Irene from Los Angeles - 2017.09.29 11:19
Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
By Annabelle from Karachi - 2018.09.16 11:31
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