MRD-FD Neutral Grounding Transformer for 6kv to 20kv

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Product Description:

1,Brief Introduction to Product

1.1  Scope of Application

MRD-FD type neutral ground resistor cabinet is complete equipment specially used by generators in power plant which adopts high-resistance grounding for neutral. The voltage grade for generator mainly ranges from 6kv to 20kv. When one point of the stator grounds, the device is able to limit the grounding current at a reasonable value, and effectively restraint arc flash transient overvoltage associated with single-phase grounding.

1.2  Operation Environment

1,Applies to indoors.

2,Ambient temperature: between -40 and +40 centigrade.

3,The altitude shall not exceed 3000m.

4,Relative humidity be or lower than 95%(25 centigrade)

5,Power grid frequency:58-62Hz (60Hz System), 48-52Hz (50Hz System)

6,The air at the installation site shall be free from chemical corrosion, vapour or explosive dust

2.1  Parameters of Grounding Transformer

Insulation class:H

Temperature rise:≤100K

Cooling:AN

Protection Level: for paper-insulated dry type grounding transformer, the PI is divided into IP00 (no enclosure), IP20, and IP23 (with enclosure) .

Insulation level, impedance voltage on-load loss and no-load loss are according to relevant national standards.

Insulation resistance testing: high voltage-low voltage and to earth≥300MΩ,and low voltage-earth≥100MΩ.

 

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Q:In order to ensure the normal operation of the power system and equipment to achieve a grounding
The grounding of power system and electrical equipment can be divided into working grounding, protective grounding, grounding and repeated grounding.
Q:Withstand voltage test, power equipment insulation unqualified reasons?
Test methods and voltage measurement methods are not correct. For example, when the transformer is tested, the non - Test winding is not connected to the ground, and the non - tested winding may be discharged to the ground. For example, the test of large capacity test, the voltage is still on the low side of the measurement, due to the capacitive effect, the actual increase in the voltage on the test sample over the test voltage, resulting in the breakdown of the subject matter, misjudgment is not qualified.
Q:What are the business scope of Electric Power Engineering Co., Ltd.
Do not need to be able to do anything! Or you can hang on to someone else's qualifications!
Q:How long has the power of power electronic equipment delivered water
Major equipment and componentsPneumatic conveying equipment in general by the receiver (such as pipes, nozzles, transmitter, etc.), wind pipe, pipe separator (the volume and the cyclone two), air lock (the tipping and rotary two, can be used as feeder, and can be used as a discharger) and the dust collector and fan (such as centrifugal fan, blower, water ring vacuum pump, air compressor and other equipment and components). The role of the feeder is to enter the material, resulting in a suitable material to gas ratio, so that the material start, accelerate. The role of the separator is to separate the material from the air and to sort the material. The utility model relates to an air lock device, which is used for feeding or discharging uniformly, and preventing air leakage. The role of the fan is to provide power for the system. High pressure centrifugal fan or water ring vacuum pump is used in vacuum suction system.
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: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: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
Q:Electrical equipment classification
Mainly there:Equipment for the production and conversion of electrical energy, such as generators, motors, transformers, etc.;Switch on or off circuit breaker, such as circuit breaker, isolating switch, contactor, fuse, etc.
Q:I would like to open a company on the construction of power equipment, what needs to be prepared?
First, the qualification of electric power project construction. Divided into one to four, respectively, by the Ministry of housing, the provincial housing department, the Municipal Housing Construction Bureau and County Housing Construction Bureau approval. Construction quality is also subdivided into general contracting, professional construction contract, etc.. The project general contracting, according to whether the design, supervision, equipment procurement and other business content, but also can be subdivided.
Q:What are the provisions of the national life of the complete sets of power equipment?
The service life of different engineering equipment specification is different

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