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:The concept of "remote message" in communication and power equipment
General electric power on the four remote, remote, telemetry, remote control, remote control, and now there is more than one remote viewing. Remote signal is generally refers to the opening and closing state of each switch, remote measurement is the voltage, current, temperature, etc..
Q:What is the power system and the power grid 2 what is the rated voltage of electrical equipment
Power system is a kind of electric power production and consumption industry chain, which is from generation to generation. When the "power system" as an industry name, it includes power generation, for (transmission) electricity, power construction, power design, power test, power scheduling, etc..
Q:Definition of power equipment defects
An abnormal or hidden danger of the equipment or facilities that are in operation or spare. These anomalies or hidden dangers will affect the human body, power grid and equipment safetyReliable and economical operation of the power grid and equipment; equipment output or life; power quality.
Q:1 what are the main aspects of power line fire? 2 what are the main aspects of electrical equipment fire?
Five, fire control room and electrical fire monitoring detector set over 8 independent electricFire monitoring detector six, electrical fire monitoring system settings should affect the power supply system
Q:What are the power equipment which is used in the field of steam turbine
Power equipment including: boiler, steam turbine, pump, deaerator, condenser, generator and so on, from the impact of steam boiler turbine blade hot out of the turns, then drives the generator to rotate to generate electricity, in general, now in thermal power plant and a large Shipping Co to use steam turbine
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:What is the GIS in power system
Three Gorges Left Bank GIS a total of 39 switches. Left a total of 8 units of power station and the Three Gorges to Wanzhou 1 line, the Three Gorges to Longquan 1 lines, 2 lines, Three Gorges to Longquan Three Gorges to Longquan 3 lines of four circuits? Left two power plant a total of 6 units and the Three Gorges to Jingzhou 1 lines, 2 lines, Three Gorges to Jingzhou Three Gorges to Jingzhou 3 line etc. three lines.Three Gorges left bank power plant using international bidding procurement, GIS by the internationally renowned manufacturer ABB in 1999, the successful supply installation. The utility model relates to a metal sealed off phase structure, the generator transformer adopts a unit connection, and the two unit wiring is combined into a switch unit which is connected with a joint unit to connect the 3 / 2 wiring. Bus segment, 3 / 2 wiring of the 7 strings, a series of double switch off. GIS net size of about 581.5 meters long, width of 15 meters.
Q:The production and transportation process of electric power
Transmission lines can be divided into overhead transmission lines and underground transmission lines according to the structure. The former is composed of line tower, conductor, insulator and so on, which is erected on the ground; the latter is mainly used for laying underground cable (or underwater). According to the nature of the current, the transmission can be divided into DC and AC transmission. In 1880s, the first successful realization of DC transmission, due to the low voltage limit (the transmission capacity is roughly proportional to the square of the transmission voltage) in the end of nineteenth Century for AC transmission replaced. AC transmission success ushered in the era of electrification in twentieth Century. Since 1960s, because of the development of power electronics technology, DC transmission has a new development, and AC transmission, with the formation of AC and DC hybrid power system.
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:What is the double name of power equipment?
The double name of equipment refers to the name and number of the equipment.The name of the equipment is Chinese, the number is Arabia. Together is a double name. The same station, will not appear the same name, or the same number, is the only. The only combination of the two can be more accurate.

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