Calibration method of megohmmeter
Calibration method of megohmmeter: 1. Impedance bridge with 1% accuracy in the range of 103...
March 2026
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...
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...
How to use dry-type test transformer
Use method of dry-type test transformer: 1. The input end of the test transformer control...
High voltage test transformer current generation
1. The directional movement of electric charge generates electric current, whether it is positive or...
Common parts of transformer short-circuit damage
Transformer short-circuit is a very troublesome question. Today we will summarize the common parts of...