What is the role of insulation resistance testing?
At present, if the electric power industry wants the normal operation of electrical equipment, so...
The basis for partial discharge compliance
Partial discharge refers to the non-penetrating discharge that occurs between the electrodes of the insulating...
Why should the transformer be immersed in oil
Oil-immersed transformers are called insulating oils. Their role is to prevent breakdown. If the high-voltage...
Direct resistance meter field test method
Due to the triangular connection of the low-voltage side windings of the large transformers, the...
Several common high voltage tests
1. Partial discharge test At present, there are two types of test methods. One is...
Analysis of Winding Ground Fault Maintenance
Motor fault maintenance analysis Winding is an integral part of the motor. Aging, moisture, heat,...
What factors affect the insulation resistance?
1. The effect of temperature The temperature of the power equipment in operation changes with...
Correct measurement of insulation resistance
When using a megohmmeter, it will generate a very high voltage. Since the measurement object...
Advantages of digital megohmmeter
The megohmmeter is a special instrument for measuring insulation resistance in the power detection test,...
Method of detecting motor with megohmmeter
Step 1: Use a megger to measure the motor’s ground insulation Note that for a...