• MRD-BJ/FD Neutral Grounding Resistor(NGR) System 1
  • MRD-BJ/FD Neutral Grounding Resistor(NGR) System 2
MRD-BJ/FD Neutral Grounding Resistor(NGR)

MRD-BJ/FD Neutral Grounding Resistor(NGR)

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1 unit
Supply Capability:
30 unit/month

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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

 

 

 

Q: What is the GIS in power system
Popularly speaking, GIS is often we can see the switch station, also known as high-voltage distribution device.There are three types of high voltage power distribution equipment: the first is the conventional air distribution equipment, referred to as AIS. The bus bar is exposed directly to the air, and the breaker can be provided with a porcelain column or a tank type. This type is used in Gezhouba Dam power plant.
Q: 1, what are the fire hazards caused by electricity in the server room?2 what are the fire hazards in the server room?
Two, electrical fire monitoring system should be listed in the department or all the monitoring unit:1 electrical fire monitoring equipment;2 residual current type electric fire monitoring detector;3 temperature measuring electric fire monitoring detector;4 linear temperature fire detector
Q: In what way is it confirmed that the destroyer is an electrical device? Identification or what.
Electricity has been used, but due to the lack of dry season or lack of electricity and other reasons, and the suspension of power supply lines, should still be considered to be in use. The behavior of the people to cut such lines in the cut, if a crime, shall be held criminally responsible for the destruction of electric power equipment.
Q: What is the LCP cabinet of electric power equipment
But not completely covered, PLC cabinet is only for PLC, but it may be installed in the production site, it may also be installed in the control room.
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 transformers and other equipment are what units procurement bidding, all those procedures!
There are also a small number of individual units, such as large projects and large enterprises.The procedure is according to the conditions of the project are open to the public, the public required invitation required. There is also a project that is only through the construction project bidding units, equipment, the overall package to the construction unit, organized by the construction unit procurement.
Q: On the safety hazards of electric equipment safety
4 where the demolition, the power line protection zones of overweight, lifting, drilling, piling, scaffolding and other construction work, it shall be permitted by the power supply departments, take appropriate safety measures, and can work in the power supply department under the supervision of professional staff.5 prohibit the installation of electric power facilities within the range of 500 meters to carry out blasting operations, fireworks, etc..6 prohibit fishing in the power line protection zone, in case of personal electric shock accident.7 ban on power line protection zones, such as various types of debris piled hay straw, especially prohibit piling flammable and explosive materials.
Q: I do sales of electrical equipment, how to deal with the power supply bureau?
I am in charge of power management and power management. To provide you with the following suggestions: both the high voltage power equipment (such as transformer, voltage or current transformers, towers, porcelain crossarm, netsuke etc.)
Q: Generator, shunt capacitorShunt reactorShunt capacitorStatic compensator
Other static compensation equipment. The utility model relates to a capacitor and a reactor, which belongs to a device for absorbing reactive power
Q: Pre checking and checking of goods in power system
That is one of the effective means to ensure the safe operation of electrical equipment. Over the years, the power sector and power equipment of large industrial and mining enterprises are basically in accordance with the rules of the preventive test of power equipment issued by former Ministry of electric power "(hereinafter referred to as the" Regulations ") requirements for testing, the timely detection and diagnosis equipment defects play an important role.

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