Verified Supplier | Baoding Mingrui Opto...

Baoding Mingrui Optoelectronics Technology Co., Ltd.

China (Mainland) | Business Service (Transportation, finance, travel, Ads, etc) | Contact Details
Established 2008
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Quick Details

  • Place of Origin: Hebei, China (Mainland)
  • Brand Name: MINGRUI
  • Model Number: MRD-BJ-20/40
  • Voltage: 0.4~35kv
  • Service Industries: power distribution,larger plant,airport,subway station
  • Function: Limit ground fault current at a predetermined level
  • Service Conditions: Outdoor
  • Frequency: 50HZ,60HZ
  • Max Elevation: 3500m
  • Ambient Temperature: -20~70 centigrade
  • Earth Quake Intensity: less than 8 degree

Packaging & Delivery

Packaging Details: wooden case
Delivery Detail: 20 days against deposit or L/C


Transformer Neutral Earthing Resistor
service: 50/60Hz system
resistor value:1~2000ohms

Transformer Neutral Earthing  Resistor




neutral grounding resistor, ngr,ner,neutral earthing resistor, Netral kabinet resistor grounding Asas neutral perintang kabinet


Type 20/√3 kV, 13ohms, 300A/10s, Outdoor
Rated VoltagekV20/√3 
Rated CurrentA300
Rated Resistance at 250COhms40
Resistance Material stainless steel alloy of US standard
Resistance Tolerance%+/-3%
Short Time Ratings10
Maximum Ambient Temperature0C70
Temperature RiseK740
Power frequency withstand voltage in 1min in accordance to IEC 71kVrms70
Lightning impulse withstand voltage  in accordance to IEC 60071kVpeak170
Location Outdoor
Degree of Protection IP40
Insulator Creepage Distancemm/kV31
Cable Incoming (Top, Bottom or Side) bottom
Cable Outgoing (Top, Bottom or Side) bottom
Applicable Standard IEEE 32 
- Material cold rolled steel plate
- Thicknessmm2
- Finishing (Galvanized, powder coating, painted…) powder coating
- Colour gray or customized
Dimensions (LxWxH)  
- Lengthmm1550
- Widthmm1450
- Heightmm2100
Net weightkgapprox. 650
Main Equipment List  
- resistor elements
- enclosure


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