MRD-XHZ/XHP Arc Suppression Coil 6~66KV

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MRD-XHZ/XHP Arc Suppression Coil


Arc suppression coils are used for capacitive current compensation during earth faults in electric networks. They are to be connected between the transformer neutral point and the ground.


Adjust range:0~100% rated current
Voltage range: 6~66KV
Duration time: 2 hours Max.

Test & Quality

All Mingrui arc suppression coil are designed, rated, manufactured and tested in strict compliance with IEEC60076-6. Routine tests performed on each arc suppression coil are insulation resistance test,winding resistance measurement, applied voltage test, transformer oil withstanding voltage test and HV characteristic test. Mingrui’s internal quality system has been developed and certified under ISO 9001 quality system

Arc Suppression coil

1.MRD-XHZ step type: with tap changer
   connecting with different taps on ASC to
   change the inductive current with steps
2.MRD-XHP sliding type: change inductive
   smoothly by arranging a magnetized iron
   core inside ASC and applying DC
   magnetizing current on the iron core


1.IPC system, multilayer PCB, stable system operation
2.Color LCD with data display, set and query function
3.Auto measure system voltage and displacement voltage etc, Auto   
   trace and compensate
4.Compensate range: 0~100% of rated current
5.Inside inserted grounding fault detector and the fault feeder could
   be detected and switched off quickly
6.RS232 & RS485 communication interface
7.with standard printing interface and print timely and grounding
8.Grounding wave is recorded and could display on any other
   computer without driver installation
9.Max. 1000 grounding information could be stored

On-load Tap Changer

Only needed if MRD-XHZ step arc suppression coil is chose.

Damping Resistor
Only suitable for MRD-XHZ step type, made of stainless steel alloy.
During earth fault, it is switched off, and during normal operation, it is connected with arc suppression coil to prevent resonant over-voltage


-Grounding transformer
-Shunt Resistor


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Q:What is the importance of annual maintenance of electrical equipment
What is power equipment testing? Why detect? How to detect? This paper will focus on the solution of the problems of the electric power users, especially the high voltage self control households. Hope to be able to push the pressure from the heart of the door of the fog, accurately understand the concept and scope of detection, a correct understanding of the importance of power equipment testing, in-depth understanding of the detection technology, power safety in the case of unburned.
Q:Insulation level of electrical equipment used in neutral point grounding system shall be
This is a bit of a problem, because there are different levels of insulation in the neutral grounding system. Some places are determined in accordance with the graded insulation, that is, the first and the end of the neutral point of the different requirements
Q:I would like to ask the power experts, according to the annual additional electricity, installed capacity
At least the national research institutions to do, here is about not a conclusion. If such a conclusion, it also belongs to the commercial classified data, not just to show people.
Q:What is the power equipment network
State Grid procurement requirements to provide information: network card requirements are not standardized,For the national grid access card: 1, please hold valid company documents to the local GRID (NATION) business hall, consulting
Q:What is the good rate of equipment determined by the rating of substation equipment
With China's state-owned enterprises economic autonomy to the enterprise, the equipment management should also be extended: the demand rate of sound equipment, ensure the normal operation of equipment is the most important management goal, extended to the assessment of fixed assets created by the economic benefits
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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.
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. Such as measuring instruments, relays, switches, buttons, automatic control equipment, computers, signal equipment, control cables and some power supply devices, etc..

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