MRD-BJ/FD Neutral Grounding Resistor(NGR)

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
1 unit
Supply Capability:
30 unit/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:


Neutral Grounding Resistors are used to protect power transformers, power generators and other associated equipment in your power systems against 50/60 Hz faults (short circuit) and transient phenomena (lightning).


There are six parameters needed to specify the neutral grounding resistor.
1. Rated voltage line to neutral or system voltage.

2. Rated fault current.

3. Rated “duration time” of the line to neutral voltage not exceeding the allowable temperature rise.

4. Rated Resistance.

5. Application environment, indoor or outdoor.

6. Enclosure material, ss plate or normal cold rolled sheet.


• Rated current: from 1 amp to 2000 A

• Rated voltage: from 0.4 to 35kV

• Rated Resistance: from 1 ohm to 2000 ohm

• Rated time: 1 sec to continuous time rating


All Mingrui Neutral Grounding Resistors are designed, rated, manufactured and tested in strict compliance with IEEE-32. Routine tests performed on each Neutral Grounding Resistor are measurement of resistance, high voltage power frequency, insulation measurement, aspect verification, dimensional control. Mingrui’s internal quality system has been developed and certified under ISO 9001 quality system


Standard unit includes the stainless steel resistor assembly plus all the required insulators, internal connections and hardware installed in a standard safety enclosure. Neutral Grounding Resistor units are completely assembled, prewired, and tested at our facility. For shipping all units are crated for added protection and ease of handling.


• Forged eyebolts in all four corners for easy hoisting.
• Removable front and rear louvered covers for easy access for connection and inspection.

• Corrosion resistant nameplate provides complete ratings and manufacturers information.

•Heavy gauged enclosure polyester powder coated finish provides maximum protection.


•Stainless steel, cold rolled plate construction. Custom paint finish is available.
• Top or side mounted entrance bushing(s).
• Screened covers for indoor applications.
• Support stands for elevating the enclosure above ground.


• Current or potential transformers mounted and prewired at our facility
• ON or OFF Load disconnecting switches




Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Design all equipment in the power system
Primary equipment is:The power plant and substation, generator transformer (step-up / step-down transformer), busbar, circuit breaker, isolating switch, current transformer, voltage transformer, insulator, reactor, lightning protection equipment (arrester, lightning), grounding device, electric energy metering.Business side: step-down transformer, circuit breaker, isolating switch, current transformer, voltage transformer, insulator, lightning protection and grounding device, the internal power supply generator, reactive power compensation cabinet, electric energy metering,
Q:Power equipment sales process, the customer asked the most questions thank you
3, the component parts of the device, which is the core component of the device, to master the working principle of the device oh;4, after-sales service problems, technical introduction of after-sales service;5, price, product prices and other brand products at what level;
Q:I would like to ask the power experts, according to the annual additional electricity, installed capacity
At least the national research institutions to do, here is about not a conclusion. If such a conclusion, it also belongs to the commercial classified data, not just to show people.
Q:How to run a company that operates electric equipment
Or do not do other electric power equipment, but the company's other power products to pull the business on the line, at the beginning of the sale to the quality of good, and then the price is low, a long time there is profit, customers will have.
Q:In the city emergency security system, what are the relevant power equipment
High / low voltage switchgear, power distribution cabinets, industrial ovens, constant temperature and humidity test box, ovens, air curtain machine (invisible door), inductive automatic door, air conditioning and industrial fans, NELL thyristor module, thyristor, single / three-phase bridge rectifier, fast recovery module
Q:Private enterprises must be free transfer of power facilities
The new user electrical facilities investment, after the investment asset is transferred to the power supply enterprise, according to the need for "business rules", the actual state of electricity contribution, interface division, maintenance management ability, after consultation by both parties to determine.
Q:Power equipment Market Overview
The first quarter of 2013, China's economic growth rate has declined, but overall still maintained at a high level, especially the power equipment of power transmission equipment and electrical equipment demand remains steady growth, thereby stimulating imports of the rapid growth of the industry; at the same time, the world economy has been warmer, the international power equipment market demand a modest recovery, I pull the power equipment China's manufacturing exports continued to grow. In the import and export growth driven by two, the first quarter of China's total import and export of electric power equipment manufacturing industry rebounded significantly.
Q:Buildings, factories, institutions, power distribution room of the power equipment as required
And some equipment is required to use the 6kV power supply, voltage level and the load of the device determines the choice of power equipment rated voltage, current value. Building, there are generally important electrical equipment such as elevators, in the national specification clearly requires, a class, two types of load is not allowed to power outages, which long requires the use of dual power supply
Q:What are the provisions of the national life of the complete sets of power equipment?
Conventional equipment GB service life of 30 years, actually not to use life to replace, mainly is the national economic development speed is faster, for the replacement of aging equipment, specialized centralized auction, where their standard is used according to their own situation to the report.
Q:What is the specific content of power engineering commissioning
Power engineering commissioning requirements are as follows:1. Major in electrical engineering, college degree or above;2, with the same type of work more than three years experience in power engineering commissioning;3, skilled office software;4, have a certain project commissioning experience and on-site guidance engineering installation and commissioning;5. Able to travel frequently.

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range