Neutral Earthing Resistors, NER, used to limit the fault current for safety of equipment, up to 110KV

Neutral Earthing Resistors (NERs) – sometimes called Neutral Grounding Resistors (NGRs) – are employed in AC distribution networks to limit the current that would flow through the neutral point of a transformer or generator in the event of an earth fault.

NERs limit fault currents to a value that does not cause any further damage to switchgear, generators or transformers beyond what has already been caused by the fault itself, and in some cases limit touch and step potentials to safer values than a solidly grounded systems. In addition, consideration is given to operation of protection relays within the required time.

General Features

1.Stainless-steel resistor elements
2. Bolted resistor element connections instead of welded connections providing assemble of spare parts on site immediately
3. High thermal capacity to absorb high currents
4. High altitude ratings
5. Rugged shock-resistant construction
6. Solid top cover sloped to prevent water accumulation

Technical Specifications

1. Operation Voltage : Up to 110 kV line to line systems
2. Rated Current : Up to 5000 A
3. Ambient Temperature : Up to 55℃ (For higher ambient temperature, consult factory)
4. Resistance Alloy : Stainless-steel (CrNi or CrAl)
5. Different Protection Degree according to demand

Jingdacheng Electronics(JDC) is a leading power resistors manufacturer in China, and we are always focusing on providing various resistors and loading solutions since it was established in 1997. With 24 years industry experiences, JDC has a professional team for resistor designing, manufacturing and quality control, and most of our managements have been working for JDC at least 10 years. Even approved by ISO9001:2014, JDC started proceeding a very high standard (Japan JIS) of manufacturing and quality inspection since we built a long partner cooperation with Japan IWAKI MUSEN in 2013. Now, JDC is providing many resistors and solutions for some top500 companies, Such as: Huawei, Yaskawa, Panasonic, Midea, etc.