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: What is the GIS in power system
- GIS has the advantages of small footprint, high reliability, high security, maintenance workload is very small, the main parts of the maintenance interval of not less than 20 years.In the Three Gorges project, the left bank power station and the right bank power station has a 550 thousand volt GIS high voltage power distribution device. Left bank power station 550 thousand volt GIS and ancillary equipment in the upstream of the Deputy plant height of 93.6 meters GIS indoor. Main transformer and 500 thousand volt shunt reactor. GIS and the main transformer and shunt reactor with oil, six sulfur hexafluoride casing connection. Room GIS upper Deputy plant roof, layout of a GIS air, oil outlet pipe and open the trap, capacitor voltage transformer, lightning arrester, air outlet, six sulfur hexafluoride overhead line connected by the casing with these devices. GIS indoor type.Indoor GIS is hardly affected by atmospheric conditions. GIS overhaul cycle is generally 15 years or more, the Three Gorges power plant GIS main parts of the maintenance interval of not less than 20 years. And AIS or H - GIS, due to the impact of the external atmospheric conditions, the aging and damage speed, overhaul cycle is short and overhaul times.
- 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: 1, what are the fire hazards caused by electricity in the server room?2 what are the fire hazards in the server room?
- Three, should be based on the size of the project need to determine the location of the fire to determine the use of independent electric detector or non independent detectorFour, according to the specific circumstances of the electrical equipment to determine the electrical fire monitoring detector form and installation location
- Q: What power equipment is needed for the motive,
- As long as the hydraulic pressure machine, bearing induction heater, tooling, assembly line assembly, commissioning test bench. Large parts to a lot, such as various parts of the fixture, the assembly line to the rotary table, lifting operation, pneumatic tools, etc.......
- Q: Ready to do electrical engineering commissioning, but do not know the work tired? Is there any danger?
- 3, the State Grid Substation Intelligent Inspection Robot infrastructure design, installation, commissioning, operation and maintenance work;4, master the progress of debugging, coordinate and solve the problems in the debugging process;5, sorting out the relevant information required for inspection, organization of the specific project acceptance;6, complete other tasks assigned by the leadership.
- Q: On the nameplate of the electrical equipment, what does ith UE ie mean?
- Electrical equipment (Electrical Equipment) is in the power system of generators, transformers, power lines, circuit breakers and other equipment collectively.
- 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!
- The complete set of power distribution equipment is a complete set of equipment supplied by the manufacturer. The electric main circuit is divided into a plurality of units, each unit is a circuit, and the circuit breaker, the knife gate, the current transformer and the voltage transformer of each unit are connected
- Q: What are the customer groups faced by power intelligent equipment?Products such as electric capacitor reactive power control (capacitor module), reactive power compensation controller, the series of electric power meter, active filtering equipment, power monitoring system, energy management system, operating system and DC power system accessory products.
- If the capacitor is connected in series on the line, the line reactance is compensated and the parameters of the circuit are changed. Series compensation can reduce the loss of line voltage, improve the terminal voltage level, reduce the power loss and power loss, and improve the transmission capability.4 power capacitors include phase shifting capacitors, electric heating capacitors, voltage equalizing capacitors, coupling capacitors, pulse capacitors, etc.. Phase shifting capacitor is mainly used for compensating reactive power to improve the power factor of the system; the electrothermal capacitor is used to improve the power factor of intermediate frequency power system; equalizing capacitor in parallel with the general circuit breaker on fracture pressure; coupling capacitor is mainly used in electric power communication, measurement, control and protection of transmission line the capacitor is used for pulse; pulse circuit and DC high voltage rectifier filter.
- Q: Withstand voltage test, power equipment insulation unqualified reasons?
- Voltage test, power equipment insulation failure may be due to: insulation deterioration. Such as transformer oil into the water, solid insulation moisture, insulation aging, etc., will lead to decreased insulation performance, in the pressure test may not be qualified.
- Q: In power system, the general conditions for the selection of electrical equipment are
- Rated conditions, such as voltage and current, thermal stability, dynamic stability check, the most basic
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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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