Generator Neutral Grounding resistor Cabinet
Neutral Earthing resistor systems protect power transformers and generators from damaging fault currents. Earthing of the neutral limits the ground fault current to a high level (typically 50 amps or more) in order to operate protective fault clearing relays and current transformers. These devices are then able to quickly clear the fault, usually within a few seconds. The importance of this fast response time is that it:
- Limits damage to equipment
- Prevents additional faults from occurring
- Provides safety for personnel
- Localizes the fault
The limited fault current and fast response time also prevent over-heating and mechanical stress on conductors. Please note that, like the solidly earthed neutral system, the circuit must be shut down after the first ground fault. Neutral Earthing Resistors are typically rated 400 amps for 10 seconds, and are commonly found on medium and high voltage systems. 24 hour RFQ turnaround for Neutral Earthing Resistor Systems.
Generator neutral grounding resistor
Generator capacity (MW) | 100 | 125 | 200(300) | 600 | 1000 | ||||
The generator voltage rating(kV) | 10.5 | 13.8 | 15.75 | 18 | 20 | 20 | 24 | 24 | 27 |
Expected single phase grounding capacitive current loop maximum(A) | 4 | 5 | 6 | 8 | 10 | ||||
Grounding transformer secondary side voltage(kV) | (10.5) 10.5/√3 | (13.8) 13.8/√3 | (15.75) 15.75/√3 | (18) 18/√3 | (20) 20/√3 | (20) 20/√3 | (24) 24/√3 | (24) 24/√3 | (27) 27/√3 |
The two side of voltage transformer(kV) | 0.22 | 0.22 | 0.22 | 0.22 | 0.22 | ||||
Grounding transformer rated capacity(kVA) | 30 | 30 | 50 | 50 | 63 | ||||
Secondary side resistance(Ω) | (0.35) 1.0 | (0.3) 0.8 | (0.2) 0.5 | (0.18) 0.4 | (0.15) 0.3 | ||||
Ground fault protection extraction voltage(kV) | (0.173) 0.1 | (0.173) 0.1 | (0.173) 0.1 | (0.173) 0.1 | (0.173) 0.1 | ||||
Why choose us
| Hunan Electric Union is a diverse electric equipment manufacturer group located in middle south of China. |
| Limit Innovation |
| We are in a traditional business since transformers and switches are developed over hundred years, even the so called “new technologies” of cast resin technology, vacuum arc distinguish technology and digital protection technology have been used for decades. Based on industry characteristics and to focus on products manufacturing itself, we implement a “limit innovation” policy on our mature products |
| 1. Update products only if latest standards revision officially issued 2. Produce new products only if related technology are maturely developed. 3. Focus limit innovation on external updates to make products easy to use and transport. |
| Our Mission |
Eventually, we could help the developing regions to update their energy quality and improve people’s life. |
Products 2. Gas insulated switchgear (GIS) 72.5-252kV 11. Compact Substation |
Services |
| Products Features We defined four rules to estimate our products, 1. Standards: All products should comply with IEC or IEEE standard codes. 2. Requirements: All products should comply with technical agreement from end user. 3. Easy to Use: All products should tested in factory and deliver with full, readable drawings and manuals. 4. Fit to Container: All products should designed to load on a container. |
Certificates
Customers all Over The World
Packing
Send your technical requirement or Single Line Diagram to my whatsapp, wechat or email, We could work together to win a project contract! |  |
- Step 1Find your interested products by search keywords
- Step 2Contact the supplier by clicking ”Enquire” or “request meeting” button, otherwise, you also could consult our import consultant.
- Step 3After verifying your email, get response from suppliers or our trade manager will contact you as soon as possible
- Step 4Set up meeting with the Chinese supplier without language barrier