MRD-BJ Transformer Neutral Ground Resistor

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Tianjin
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TT OR LC
Min Order Qty:
1 unit
Supply Capability:
30 unit/month

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Product Description:

Neutral Grounding Resistor is used to protect power transformers, power generators and other associated equipment in your power systems against 50/60 Hz faults (short circuit) and transient phenomena (lightning).

Applicable Standards  
The design of the product complies with the flowing standards: 
DL/780-2001   Neutral Grounding Resistor in Power Distribution 
IEC726           Dry-Type Power Transformer 
DL/T620-1997  Overvoltage Protection and Insulation Co-ordination of AC  Electrical Equipments 
IEC60-1         Experimental Technique of High Voltage 
GB1208-1997    Current Transformer 
IEC60529:2001  Enclosure Protection Degree (IP code) 
IEEE32-1972    Technique Terms and Experiment of Neutral Grounding Device 
IEC60081       Insulation Co-ordination of Transmission and Distribution Device of High Voltage. 

DL/T593-1996   Common Specifications for Purchasing High Voltage  
              Switch Equipment. 
GB50150-1991  Electrical Equipment’s Hand-over and Test Standard of 
                Electrical Device Installation Project.

Typical Technology Parameters

Product Model

System Voltage

kV

Rated Current

A

Current Flowing Time in short TimeS

Rated Resistor Value Ω

(±5%

Insulation Withstanding Voltage kV

8/20μS

Thunder Stroke

1min Power Frequency

MRD-BJ-6/36.4

6.3

100

10

36.4

60

32

MRD-BJ-6/18.2

6.3

200

10

18.2

60

32

MRD-BJ-6/9.09

6.3

400

10

9.09

60

32

MRD-BJ-6/6.06

6.3

600

10

6.06

60

32

MRD-BJ-10/15.16

10.5

400

10

15.16

75

42

MRD-BJ-10/10.10

10.5

600

10

10.10

75

42

MRD-BJ-10/7.57

10.5

800

10

7.57

75

42

MRD-BJ-10/6.06

10.5

1000

10

6.06

75

42

MRD-BJ-35/20.20

35

1000

10

20.20

185

95

MRD-BJ-35/10.10

35

2000

10

10.10

185

95

 

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Q:What are the business scope of Electric Power Engineering Co., Ltd.
Do not need to be able to do anything! Or you can hang on to someone else's qualifications!
Q:Power equipment sales process, the customer asked the most questions thank you
6, some of the common causes of the failure of the equipment and processing needs to understand, it is possible that users will ask some of the problems they encounter oh;The last thing is the most important, in order to get the order: it depends on how to ensure that the interests of their clients, and this look at your company policy, the interests of the customer relationship and ensure equal importance! Basically so many questions, other topics. Absolute hand!
Q:On the safety hazards of electric equipment safety
1 prohibited in the overhead power lines on both sides of the area within 300 meters of flying kites. If the illegal flying kite behavior should be stopped at the first time and report to the power sector or local government.2 no unit or individual shall plant trees, bamboo or other tall plants that may endanger the safety of power facilities in the power line protection zones.
Q:The difference between electric load and power supply capacity
There is a correlation coefficient between them, the power supply capacity = power load * demand coefficient.
Q:What equipment is needed in the national grid project
If the grid equipment. There is a device: power transformers, switches, knife gate, bus, GIS, HGIS, voltage transformers, current transformers, high resistance, lightning arrester, bare wire, line hardware, insulators, towers, power cables, etc.
Q:The problem of electric power equipment withstand voltage
Because of the low air pressure in the air at high altitude, at the same voltage
Q:What is the GIS in power system
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.
Q:In order to ensure the normal operation of the power system and equipment to achieve a grounding
1) work: grounding is to ensure electrical equipment in normal or accident conditions reliably, the neutral point directly or through special equipment (such as Petersen coil, reactor, resistance, breakdown insurance, etc.) do metal and earth connection.
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 specific content of power engineering commissioning
First, the main contents of the commissioning of power engineering are as follows:1, familiar with the one or two circuit wiring, the examination of the drawings, the 10kV and 110kV of the electrical test of the one or two equipment, the protection device test;2, equipment debugging, test process data record analysis and problem solving;

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