MRD-NP Discharging Gap for Transformer Neutral

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Tianjin
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1000 unit/month

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Product Description:

Quick Details

Place of Origin:

Hebei China (Mainland)

Brand Name:

mingrui

Model Number:

MRD-NP

voltage:

110KV transformer and 220KV transformer

Size:

customized

function:

transformer neutral grounding discharging gap

Packaging & Delivery

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

Specifications

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

 

Function 

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:What is the importance of annual maintenance of electrical equipment
The necessity of power equipment testingPower equipment is the hub and channel in the transmission and distribution network, in the course of the use of equipment will be aging, disrepair, hidden trouble, etc.. However, these situations can not be ruled out by the eyes of the people, the staff of the experience, it is necessary to detect the special power equipment to check out these security risks and the organization of human resources in a timely manner to exclude.In the operation of electric power, the safety of electric power has always been a chord of the electric power. Power equipment testing is actually played a role in prevention and detection of hidden dangers. So it is very important to detect the electric equipment (i.e., the preventive test of electric equipment).
Q:On the safety hazards of electric equipment safety
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.5 prohibit the installation of electric power facilities within the range of 500 meters to carry out blasting operations, fireworks, etc..6 prohibit fishing in the power line protection zone, in case of personal electric shock accident.7 ban on power line protection zones, such as various types of debris piled hay straw, especially prohibit piling flammable and explosive materials.
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:What are the technical measures to ensure the safety of the power line equipment?
5 hanging sign and installing fence (fence).These are the contents of safety regulations (line part)
Q:What is the equipment that can emit and absorb reactive power in electric power system
The equipment you have listed has this function. The generator and the camera belong to the rotation compensation equipment
Q:Buildings, factories, institutions, power distribution room of the power equipment as required
And some equipment is required to use the 6kV power supply, voltage level and the load of the device determines the choice of power equipment rated voltage, current value. Building, there are generally important electrical equipment such as elevators, in the national specification clearly requires, a class, two types of load is not allowed to power outages, which long requires the use of dual power supply
Q:What are the lightning protection measures of power system
1 set up the lightning rod, 2 to reduce the grounding resistance. 3 set up the coupling ground wire, the 4 adopts the unbalanced insulation mode. 5 equipped with automatic reclosing. 6 to strengthen the insulation, the 7 installation line lightning arrester, barrier needle, 8 lightning protection grounding
Q:I do sales of electrical equipment, how to deal with the power supply bureau?
380 low voltage line equipment (switchboard, overcurrent protector, etc.) or electrical equipment (such as electric energy metering, checking table, meter and electric meter box, etc.) if you want to make better cooperation effect you, if you have the ability, then of course you directly to the main leadership of the power department is better the.
Q:How to handle the qualification test, what kind of power equipment
Acceptance; staff review the material you submitted to meet the requirements, may be 10 working days.(three) after acceptance, on-site verification. Staff to review your outfit team.
Q:I would like to open a company on the construction of power equipment, what needs to be prepared?
The second is the power facilities installation, repair and testing qualification. Also divided into one to four, respectively, by the State Electricity Regulatory Commission, power supervision bureau and the city in the county, the county's dispatched office - to do the examination and approval of the electricity office. In some places there may be five, is designed for the establishment of the company.As for the size of the funds, different levels of economic development, the requirements are different, only to the location of the business sector consulting.In the actual participation in bidding and other construction activities, be sure to carefully read the tender documents and other construction projects, different projects for different requirements of different qualifications.

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