Model: | 1 |
---|---|
Brand: | MingRui |
Origin: | Made In China |
Category: | Electronics & Electricity / Other Electrical & Electronic |
Label: | Neutral Grounding Re , 33KV Neutral Groundi , resistor |
Price: |
¥85000
/ pc
|
Min. Order: | 1 pc |
Live Chat: | Last Online:24 May, 2012 |
MRD-BJ Series Neutral Point Resistor Cabinet For Transformer
In distribution systems neutral technique of point grounding is usually categorized into neutral ungrounding, neutral grounding via resistor, and neutral-point grounding via arc suppression coil. Differnent grounding ways decide various operating ways. With development of economy , over-head line which is the main way of past power grid has been replaced by cable running line. Meanwhile, some new equipments such as hermetic compact structure of SF6 swichgear, twisted polyethylene cable and zinc oxide arrester are more and more widely applied. Therefore, non-effective grounding technique is unsuitable to present situation. As a result, to set neutral point grounding effectively the important point of power supply we should work on.
At present our contry have already have many distribution grids adopting neutral grounding resistor running ways. Installed the neutral-point grounding resistor, when it happens non-metal grounding, influenced by the grounding resistor, the current flows through the grounding and neutral which value is obvious reduction,at the same time.The rising voltage of normal phase is obvious fall,zero voltage is a half of single phase –metel grounding,So it’s obvious that adoping neutral via resis