MRD-NP Discharging Gap for Transformer Neutral

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Place of Origin:

Hebei China (Mainland)

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110KV transformer and 220KV transformer




transformer neutral grounding discharging gap

Packaging & Delivery

Packaging Detail:wooden case
Delivery Detail:25-40 days against deposit


Transformer Nuetral Grounding Protection Device
Max earthquake intensity: 8
Frequency:50Hz and 60Hz system
Max wind pressure:

Transformer Nuetral Grounding Protection Device  


Transformer netral titik kesenjangan perlindungan perangkat , Transformer neutral titik jurang peranti perlindungan, 110kv transformer neutral protection gap device,220kv transformer neutral overvoltage protection gap, neutral point overvoltage protedtion device



Most neutral of 110KV/220KV power networks are not grounded. In such systems, the neutral is easy to get overvoltage if struck by lightning or short-circuited by single-phase grounding fault. Besides most transformers are uniform insulated. This will greatly threaten insulation of neutral point. Therefore, we use MRD-NP Transformer Discharging Gap to protect neutral of transformer so as to prevent accidents from happening.


 Operation Conditions


1. Applicable for indoor and outdoor.


2. Ambient temperature:-50~+55 celsius  


3. Altitude: 1500m, if exceeds, we could produce as per specific details. 


4. Max earthquake intensity: 8


5. Frequency:50Hz and 60Hz system


6. Max wind pressure:700Pa



Product Overview

110KV and 220KV is the main voltage grades in power supply grid, due to high voltage the neutral point usually grounds solidly or neutral point of some transformers does not ground based on requirements of relay setting and avoiding communication interference for limiting single-phase short-circuit current. By this way, the neutral point would be overvoltage caused by lightning stroke or single-phase grounding faults. Moreover most transformers are graded insulation, so the the overvoltage hazards to neutral insulation is huge. We must set a protective device preventing such accidents from occuring. MRD-NP transformer neutral gap protector of our company is such a device for it. It is produced strictly as per DL/T620-1997 overvoltage protection and insulation co-ordination of AC electrical equipments, applicable to 110 kv and 220kv power system where transformer neutral point does not ground.


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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: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:On the safety hazards of electric equipment safety
3 where in the overhead power line protection zone new, reconstruction or expansion of the building, must go to the power supply department for the approval of the relevant procedures for the safety of power facilities construction. It is forbidden to borrow, dig fish ponds, pile up or dump harmful chemicals in the power line protection zones.4 where the demolition, the power line protection zones of overweight, lifting, drilling, piling, scaffolding and other construction work, it shall be permitted by the power supply departments, take appropriate safety measures, and can work in the power supply department under the supervision of professional staff.
Q:How long has the power of power electronic equipment delivered water
Pneumatic conveying device has good dustproof effect; easy to realize mechanization and automation, reduce labor intensity, saving manpower; in the transport process, can be a variety of technology operations at the same time, such as mixing, crushing, sorting, drying and cooling; to prevent the material moisture, pollution or mixed with debris and other advantages, so it has been applied in the casting department, metallurgy, chemical, building materials, food processing etc.. Its main disadvantage is that the power consumption is large
Q:What is the installation equipment of the transformer on the power installation project
Installation of drop fuseHigh and low voltage side of distribution transformer should be equipped with fuse. High voltage side fuse at the bottom of the vertical distance from the ground is not less than 4.5m, the fuse and the horizontal distance of not less than 0.5m, in order to smooth down the fuse tube is easy to operate and fuse, axis drop type fuse with the vertical line of 15% ~ 30% angle. The vertical distance to the surface of the bottom of the low voltage side fuse shall not be less than 3.5m, and the horizontal distance of each fuse shall not be less than 0.2m.
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:Is the installation of railway communication, signal and power related to mechanical and electrical engineering
2, the communication system has its own transmission access network system, program-controlled switching system, optical cable and cable system and line real-time online monitoring system, power supply system and power environmental monitoring system (such as these are basically the same equipment and system of telecom operators, need to have a special construction qualification).
Q:Private enterprises must be free transfer of power facilities
4, in the public substation by the user to invest in the construction of power supply equipment, such as transformers, communications equipment, switches, knife gate, etc., by the unified management of power supply enterprises. Prior to the completion of commissioning, the two parties shall sign an agreement on the operation, maintenance, repair and spare parts.5, temporary electricity and other properties of the power supply facilities, in principle, by the owner of the property rights operation and maintenance management, or by the two sides agreed to negotiate and sign an agreement.Three, in fact, property rights is a "negotiation" thing, to see both sides of "power supply contract" about how the past, users are not willing to power assets, because of electricity on the line, you want the assets, after the electrical accidents and other things, will be responsible for asset owners repair, this is the main reason of users not assets.
Q:Electrical equipment classification
Electric power system in a lot of power equipment, according to their role in the operation of different, usually divided into electrical equipment and electrical equipment two times. Directly involved in the production, transformation, transmission, distribution and consumption of electrical equipment called electrical equipment
Q:What are the provisions of the national life of the complete sets of power equipment?
Such as frequency of use, load characteristics, working environment, etc.. The service life of a certain type of equipment must refer to the specifications of the corresponding industry.

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