Protective resistorProtective Resistor
The protective resistor is connected between the test transformer and coupling capacitor to limit short-circuit current if the test object flashes over, thereby protecting the test transformer. It is constructed with an insulating cylinder frame wound with metal wire and grading rings fitted at both ends.
Product overview
The protective resistor is connected between the test transformer and coupling capacitor to limit short-circuit current if the test object flashes over, thereby protecting the test transformer. It is constructed with an insulating cylinder frame wound with metal wire and grading rings fitted at both ends.
Product Specifications
Specification Image 1
Technical data
- Rated voltage
- Custom-made to order
- Rated current
- Custom-made to order
- Resistance
- 2～5kΩ
- Frequency
- 50Hz
- Permissible operating time
- 100%UN,IN operation for 60min; 70%UN,IN continuous operation
- Temperature rise
- At rated operating conditions, resistor surface temperature rise no greater than 55K
- Construction
- With grading rings; insulating cylinder frame wound with metal wire, with grading rings fitted at both ends
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