FOB Price
Obtener el precio más reciente100 ~ 100000 / Set
|Minimum Order
Place of Origin:
China
Price for Minimum Order:
Minimum Order Quantity:
1 Set
Packaging Detail:
wooden case
Delivery Time:
25 days against deposit
Supplying Ability:
100 Set per Month
Payment Type:
T/T, L/C, Western Union, Money Gram, PayPal
Persona de contacto Ms. Angela
no.118 West Fuxing Road, Baoding, Hebei
| Grounding Resistor | |
| Application | Mingrui Neutral Grounding Resistors are used in industrial power systems for resistance grounding of wye-connected generators and transformers. A neutral grounding resistor limits the fault current to a value which is sufficient enough to operate protective relays, yet prevent unwanted fault damage. |
| Design Requirements |
Neutral grounding resistors are rated in
line-to-neutral voltage (system voltage divided by 1.**2), initial
fault current and maximum time on. Mingrui neutral grounding
resistors are designed to dissipate the required amount of energy
and not exceed the temperature limitations of IEEE Standard
******2. As defined in this publication, the time and temperature
ratings for neutral grounding resistors are as
follows: Short time:Short time ratings are *0 and *0 seconds. Since short time rated resistors can only withstand rated current for short periods of time, they are usually used with fault clearing relays. The short time temperature rise for the resistive element is **0K. Extended time:A time on rating greater than ten minutes which permits temperature rise of resistive elements to become constant, but limited to an average not more than *0 days per year. The extended temperature rise for the resistive element is **0C. Continuous:Capable of withstanding rated current for an indefinite period of time. The continuous temperature rise for the resistive element is **5C. |
