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

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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


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:Is the installation of railway communication, signal and power related to mechanical and electrical engineering
Communication signal power belongs to mechanical and electrical installation engineering. However, it is different from the mechanical and electrical installation of industrial equipment, especially the railway communication and signal system. The main differences are the following points: 1, mechanical and electrical installation is mainly refers to the installation of equipment, power, monomer debugging, linkage commissioning commissioning. Railway communication, signal, power, but there is a very strong system requirements, including the total network management system debugging, and other railway system of professional linkage debugging. For example, the signal CTCS system, track circuit and the coordination of the work system commissioning; and passenger cars, motor vehicles, truck station shunting system linkage debugging, etc.
Q:The cost calculation of power equipment
The cost of your equipment maintenance is calculated according to the method of replacement and maintenance
Q:What is the importance of annual maintenance of electrical equipment
Two, power equipment testing overviewElectrical equipment preventive testing refers to the equipment has been put into operation according to the stated experimental conditions (test equipment, such as the provisions of the environmental conditions, test methods and test voltage etc.), regularly check the test items, test period ofOr test to find out the hidden trouble of the electric equipment in operation, prevent the accident or the damage of the electric equipment. It is an important measure to judge whether the power equipment can be put into operation and ensure the safe operation.With the rapid development of social economy, the rapid development of science and technology, the range of power equipment testing, equipment and technology are advancing with the times. A set of equipment "health index" including its electrical characteristics and mechanical characteristics of the two part of the contents of the groupAs a result, and can not get the power equipment in the power of the electrical characteristics of the "health value" this problem has been plagued by power users for many years. The emergence of a new condition monitoring technology solves this problem. Not only extends the powerThe concept of equipment testing, but also to fill the blind spot in the field of power equipment testing. The conventional power outage detection and monitoring technology complement each other, to provide a full range of data support for the reliable operation of power equipment.
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:What are the business scope of Electric Power Engineering Co., Ltd.
Domestic thermal power, hydroelectric power generation, power transmission and power supply, energy saving, environmental protection, industrial and civil buildings, intelligent buildings and municipal engineering contracting, including consulting, design, research and development, supervision, project planning, equipment, construction, installation and technical services etc.
Q:What are the two devices in the power system
Your question is somewhat ambiguous, as I understand the following: the two equipment is a device for the work of the control, protection, monitoring and measurement equipment
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
Q:I do sales of electrical equipment, how to deal with the power supply bureau?
Step back, if you don't know that you will find the main leadership, director of the unit in charge of the production and operation of the unit production manager or office (the original electric power or power supply bureau has been zoned, renamed the power company, no longer belongs to the local government leaders). If not, you can be graded, which belong to one, you will find which one is responsible for leading the charge to negotiate. Above for reference only.
Q:What are the lightning protection measures of power system
Use of cables in overhead line terminations (absorbing lightning waves). Arrester installed on overhead line terminal. Use of devices to prevent the operation of over-voltage as the backup protection of atmospheric overvoltage. To reduce the grounding resistance of tower.Improve the insulation level of the system. Wait。
Q:The role of electrical equipment handover and preventive testing
Is your company product acceptance test of customer delivery, in order to find new equipment in the design, manufacture, transportation and installation in the process of diagnosis is consistent with the risks, operational conditions, testing of new equipment.

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