MRD-BJ/FD Neutral Grounding Resistor(NGR)
- Ref Price:
-
- 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. 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. • 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. |
OPTIONS | • Current or potential transformers mounted and prewired at our facility |
- Q: No concentrator can be copied directly
- There are two types of remote meter reading devices in electric power generation: one is low voltage set, called concentrator, the other is called terminal. The concentrator role is the number of meter data, first by the carrier or 485 communication way to collect the equipment, and then through the cable (optical fiber) or wireless network (cdma/gprs) transmitted to the main station.
- Q: The production and transportation process of electric power
- The transmission of electric energy, which is connected with the transformer, distribution and electricity, constitutes the whole function of the power system. Through the transmission, the far apart (up to several thousand meters) linked to the power plant and the load center, the development of electricity and use beyond the geographical restrictions. Transmission and other energy sources (such as coal, oil etc.) compared to transmission loss, high efficiency, flexible and convenient, easy to control, less environmental pollution; transmission can also connect the power plant in different locations, implementing peak and valley regulation. Transmission is an important embodiment of the superiority of the use of electric energy. In modern society, it is an important energy source.
- Q: Under the same voltage level, the rated voltage of the equipment is not exactly the same
- For different electric appliances, rated voltage may be different, commonly used for 220V, 280V, and some appliances used in not rated voltage can still work, but not up to the ideal working condition, rated voltage and the voltage at both ends of the electric appliance has nothing to do with.
- Q: What are the necessary equipment for power line project?
- It must have a climbing tool, such as irons, safety belts, safety helmet; and lifting equipment, such as cranes, hydraulic lift truck, pulley, winch, pole and so on; there must be bearing equipment, such as various tensioners, hand gourd, line cards, traction machine, tension machine;
- Q: What is the good rate of equipment determined by the rating of substation equipment
- The "system" can easily calculate the depreciation and repair costs of fixed assets in order to determine the economic life of the equipment, the best time to update. As a result of the "system" many functions of the set, so that enterprises can accurately grasp the technical status of the equipment, so as to determine the technical life of the equipment is very useful.
- Q: Private enterprises must be free transfer of power facilities
- 4, in the public substation by the user to invest in the construction of power supply equipment, such as transformers, communications equipment, switches, knife gate, etc., by the unified management of power supply enterprises. Prior to the completion of commissioning, the two parties shall sign an agreement on the operation, maintenance, repair and spare parts.5, temporary electricity and other properties of the power supply facilities, in principle, by the owner of the property rights operation and maintenance management, or by the two sides agreed to negotiate and sign an agreement.Three, in fact, property rights is a "negotiation" thing, to see both sides of "power supply contract" about how the past, users are not willing to power assets, because of electricity on the line, you want the assets, after the electrical accidents and other things, will be responsible for asset owners repair, this is the main reason of users not assets.
- Q: The company has a number of power equipment to be exported, need to go through the sea, the technical requirements of three, I would like to ask what is the three here? How to check whether the complete sets of components used to do three treatment? Please exhibitions, grateful!
- As well as protection, control, measurement and other devices are assembled in a whole cabinet, there are a number of high-voltage switchgear in power plants, substations or power distribution equipment installed after the installation of the power plant is called a complete set of power distribution equipment.
- Q: What specific enterprises and units are used to test the power of the equipment ah
- Electric Power Bureau must be used to detect classes, each project must be checked by the Electricity Industry Bureau
- Q: How long has the power of power electronic equipment delivered water
- Pneumatic conveying device has good dustproof effect; easy to realize mechanization and automation, reduce labor intensity, saving manpower; in the transport process, can be a variety of technology operations at the same time, such as mixing, crushing, sorting, drying and cooling; to prevent the material moisture, pollution or mixed with debris and other advantages, so it has been applied in the casting department, metallurgy, chemical, building materials, food processing etc.. Its main disadvantage is that the power consumption is large
- Q: Hello, I would like to ask what are the main rotating equipment in the power system? What is a rotating device?
- Generators, motors, blowers, air conditioning, transportation, lifting, etc.. Rotating machinery can be called rotating equipment
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MRD-BJ/FD Neutral Grounding Resistor(NGR)
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 30 unit/month
OKorder Service Pledge
OKorder Financial Service
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