MRD-BJ Transformer Neutral Ground Resistor

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Loading Port:
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:Pre checking and checking of goods in power system
Check: the full name is a regular inspection, with the role of pre trial is almost the same as the general power system is the two equipmentGoods inspection heard, just heard of items set is the item visit orderly, convenient for production work.
Q:What are the relevant national standards for power equipment?
The standard is very thin do not know what you want to give you some of the specific power of the main reference
Q:Is there a warranty period for power equipment?
Now there is no, you can view the relevant national standards for electrical equipment standards, as well as high and low voltage equipment test manual. Online search, easy to get.
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:How to solve the short circuit of emergency communication equipment
As you can see (xxxxx). But in the national disaster or war, the government can expropriate these hand car car.Thank you! I hope my reply will satisfy you!
Q:In the city emergency security system, what are the relevant power equipment
The key is not the equipment problem, but to attach importance to the power emergency platform and power dispatching platformOf course, in addition to EPS lighting / power emergency power supply, there are the following emergency equipment:
Q:Power equipment Market Overview
The first quarter of 2013, China's economy once again showed signs of slowing down, iron and steel, nonferrous metals and other raw material prices low volatility, electric power equipment manufacturing production costs at a relatively low level; at the same time by the industry overcapacity, fierce competition in the product market, a common means of low bid for corporate competition. Affected by the above two factors, the 1 quarter of China's power equipment manufacturing industry most price decline, in the electric power equipment Chinese Machinery Industry Federation statistics, 22 small manufacturing industries, there is decline in price index rose only 16 sub sectors, 6 sub industry price index.
Q:Insulation level of electrical equipment used in neutral point grounding system shall be
For example, 220kV transformer (YNYnd11) insulation level high voltage side is LI950AC395-LI400AC200, the front half part (head) of the lightning impulse voltage and power frequency withstand voltage were significantly higher than that of the second part (neutral side). According to the power frequency withstand voltage needs to achieve 1.6 times the rated voltage requirements, the first end of the line voltage is considered in accordance with 220kV, the neutral point according to the phase voltage (127kV) considerations. But there are some places are fully insulated, that is, according to the line voltage calculation.The triangle connection must be considered by the line voltage. Overall, C is definitely right.
Q:What are the main interference sources of the two power system
Power system electromagnetic environment consists of one or two devices, of which there are a variety of electromagnetic disturbance and interaction, the current electric power system is developing towards higher voltage, higher capacity, power network is more intensive and more complex systems, more advanced equipment to the direction of development, to guide electromagnetic disturbance of power system more serious and complicated. On the other hand, the advanced power systems using more advanced automation and other electronic and computer control, measurement, communication and protection system, and solid state electronic based advanced equipment and system tolerance electromagnetic disturbance ability is weaker, more susceptible to electromagnetic environment.
Q:Power equipment is required to replace the dimension, the state has no relevant provisions
But more time has entrusted operation maintenance experience unit maintenance, power equipment to customers is good, one can improve the safe and stable operation of equipment, to meet the demand of a power supply section, on the other hand it can guarantee and increase operation life of equipment.

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