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:Design all equipment in the power system
Divided into primary equipment and two equipmentOnce the equipment is responsible for the transmission of electrical energy, the two equipment is responsible for monitoring and protection of primary equipment.
Q:How to run a company that operates electric equipment
Or do not do other electric power equipment, but the company's other power products to pull the business on the line, at the beginning of the sale to the quality of good, and then the price is low, a long time there is profit, customers will have.
Q:What is the meaning of the high - voltage high - voltage device in power system
There has been greater than the power load power requirements, response to the power parameters is high frequency, this requires high cycle splitting device, tripping the corresponding circuit breaker, to remove the part of power grid connected or separated from the original into two or more power to lift the accident or the narrow scope of the accident to
Q:How to solve the short circuit of emergency communication equipment
, a number of amateur radio enthusiasts, radio license, the application of their own call sign plate, usually just play the role of decoration,
Q:What is the concentrator of the power set
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:What are the technical measures to ensure the safety of the power line equipment?
1 blackout.2 electrical inspection.3 grounding wire.4 use personal security line.
Q:The relationship between primary equipment and two equipment in power system
The electrical equipment of electric power system is divided into the primary equipment and the two equipment, and the primary equipment (also called the main equipment) is the main body of the power system
Q:Power equipment is required to replace the dimension, the state has no relevant provisions
This depends on the provisions of the local power supply department, generally not mandatory requirements.
Q:Part of the rated voltage of the power equipment is marked 10.5kv, and this is similar to the label 10KV power equipment what is the difference?
3, rated voltage transformerRegulations, to accept the power of the primary winding, the output power of the two windings, the general, the primary winding voltage = network voltage, the voltage of the two winding due to the consideration of the loss, higher than the network voltage of 5% to 10%
Q:In order to obtain the qualification test of electric equipment
Can not be directly applied for; there will be a variety of requirements for the application, including the number of test personnel configuration (to have a certificate, no evidence of personnel does not count), test equipment configuration (to provide invoices for the purchase of equipment, there is no light

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