MRD-BJ/FD Neutral Grounding Resistor(NGR)

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Tianjin
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TT OR LC
Min Order Qty:
1 unit
Supply Capability:
30 unit/month

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Product Description:

FUNCTION

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).

SPECIFICATIONS

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.

RANGE

• 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

TESTING AND QUALITY

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

CONSTRUCTION

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.

ENCLOSURE FEATURES

• 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.

ENCLOSURE OPTIONS

•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.

OPTIONS

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

 

 

 

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Q:What is the LCP cabinet of electric power equipment
Junction box is a collection of all kinds of lines, equivalent to a transit station, the scene and control room may have.Electronic control box instruments and electrical appliances may be used.
Q:Power equipment is required to replace the dimension, the state has no relevant provisions
But more time has entrusted operation maintenance experience unit maintenance, power equipment to customers is good, one can improve the safe and stable operation of equipment, to meet the demand of a power supply section, on the other hand it can guarantee and increase operation life of equipment.
Q:What are the relevant national standards for power equipment?
The standard is very thin do not know what you want to give you some of the specific power of the main reference
Q:How to solve the short circuit of emergency communication equipment
As you can see (xxxxx). But in the national disaster or war, the government can expropriate these hand car car.Thank you! I hope my reply will satisfy you!
Q:What specific enterprises and units are used to test the power of the equipment ah
Electrical installation company, has installed for repair, test qualification. The test is power detection.
Q:Power equipment sales process, the customer asked the most questions thank you
The questions asked by customers vary from person to person:1, the brand or model in which the same industry used, that is, customer performance, the region has no performance;2, product quality, how to use life, and other domestic brands compared to what level, quality assurance, such as a few years;
Q:Definition of power equipment defects
General defectIn the short term will not be reduced to major defects, emergency defects, although the impact of the operation but can still operate.
Q:What are the business scope of Electric Power Engineering Co., Ltd.
The manufacture, development and sale of electric power equipment, mechanical and electrical equipment, high and low voltage electrical equipment, instruments and meters, electronic products, design, construction and installation of electrical engineering, mechanical and electrical products, metal materials sales.
Q:What are the characteristics of the grounding of the power system and equipment?
Security grounding - is to protect the safety of the people and set the grounding point, such as: electrical equipment shell grounding, voltage transformer grounding two times, etc..
Q:I would like to open a company on the construction of power equipment, what needs to be prepared?
The second is the power facilities installation, repair and testing qualification. Also divided into one to four, respectively, by the State Electricity Regulatory Commission, power supervision bureau and the city in the county, the county's dispatched office - to do the examination and approval of the electricity office. In some places there may be five, is designed for the establishment of the company.As for the size of the funds, different levels of economic development, the requirements are different, only to the location of the business sector consulting.In the actual participation in bidding and other construction activities, be sure to carefully read the tender documents and other construction projects, different projects for different requirements of different qualifications.

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