Transformer 5 times impact test
The reasons why a new transformer or a transformer after an overhaul should undergo an...
2026
hvhipot Preparation for measuring insulation resistance
When the measured object is connected to the power supply, it should be taken out...
Troubleshooting of High Voltage Test Transformer
Common faults of oil-immersed transformers in operation include windings, bushings, tap changers, iron cores, fuel...
How to solve the failure of loop resistance tester
Common faults and solutions of loop resistance testers: 1. Failure phenomenon one The test current...
Resistance, current, voltage relationship
The relationship between resistance, current and voltage, then we should understand what Ohm’s law is....
Calibration method of megohmmeter
Calibration method of megohmmeter: 1. Impedance bridge with 1% accuracy in the range of 103...
Note for test transformer test
The test transformer is a supporting instrument for AC and DC withstand voltage test of...
Operation method of DC resistance tester
Operation method of DC resistance tester 1. Before use, check whether the input and output...
Transformer fault detection and troubleshooting
1. Partial failure of lead wire Detection method: The unbalance rate of the three-phase DC...
AC and DC oil-immersed test transformer details
The AC/DC oil-immersed test transformer uses advanced production equipment, adopts the new technology of coil...