Mingrui Optoelectronics Technology Co., Ltd.
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IEC Standard 220KV MRD-FD Neutral Grounding Resistors

— neutral grounding resistors, neutral earthing resistor, grounding resistors
Product Category: Power Distribution Equipments
Sales Method: Export, Manufacture
Payment Term: T/T, L/C
Min. Order Unit Price
1 set
Contact Info

Mrs.Mery Miao

Address: China (mainland) Hebei Baoding,No 118

Product Detail

Product Attribute:

  • China (mainland) More >
  • MRD-FD12
  • Mingrui
  • ISO9001:2000
  • 05/31/2012
  • 05/31/2012

Additional Info.:

  • by sea FOB tianjin
  • wooden case

Product Content Description:

1.(NGR) Technology Parameters:

FUNCTION


Neutral Grounding Resistors are 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).

SPECIFICATIONS


There are six parameters needed to specify the neutral grounding resistor.
1. Rated voltage line to neutral or system voltage.

2. Rated fault current.

3. Rated “duration time” of the line to neutral voltage not exceeding the allowable temperature rise.

4. Rated Resistance.

5. Application environment, indoor or outdoor.

6. Enclosure material, ss plate or normal cold rolled sheet.

RANGE


• Rated current: from 1 amp to 2000 A

• Rated voltage: from 0.4 to 35kV

• Rated Resistance: from 1 ohm to 2000 ohm

• Rated time: 1 sec to continuous time rating

TESTING AND QUALITY


with IEEE-32. Routine tests performed on each Neutral Grounding Resistor are measurement of resistance, high voltage power frequency, insulation measurement, aspect verification, dimensional control. Mingrui’s internal quality system has been developed and certified under ISO 9001 quality system

CONSTRUCTION




Standard unit includes the stainless steel resistor assembly plus all the required insulators, internal connections and hardware installed in a standard safety enclosure. Neutral Grounding Resistor units are completely assembled, prewired, and tested at our facility. For shipping all units are crated for added protection and ease of handling.

ENCLOSURE FEATURES


• Forged eyebolts in all four corners for easy hoisting.
Quantity Per Month: 50 sets
Patent No./Country: MADE IN CHINA
Delivery Way - Date Of Delivery: 20-30 days

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