High voltage testing transformer and electrical equipment to prevent experimental means for entered the experimental environment of the running equipment according to the rules (such as the rules of the lab equipment, environmental conditions, experimental method and experimental voltage, etc.), the experimental items, the experiment cycle of current examination or experiment, to find hidden dangers in the operation of power equipment, prevent hair seeing becomes corrupt or electric power equipment, and it is whether the discriminant power equipment in place of the input and security was the top insurance operation measure,

Experimental transformer to prevent experimental method

Organs of the electrical equipment can prevent experiments through several above,

1, measuring insulation resistance

It is one of the most rarely used and the easiest way of experiment, generally measured by megohmmeter, according to the sample (s) measured in 1 seconds when the size of the insulation resistance, able to detect the insulation can have through the collection of faults, all or penetrability of be affected with damp be affected with damp be affected with damp be affected with damp,

2, measuring leakage current

Its reason basically with measuring insulation resistance loop resistance test is on the contrary, and check the essence of the disadvantages are also largely on the contrary, but because of the leakage current measurements used in the normal power supply by high pressure equipment for the whole group were needed, and microamps table directly read leakage current, it has the experiment voltage can regulate it; High acuity, and the measurement repeatability is good; Reduced the insulation resistance; Available measure to attract recent discriminant features such as insulation faults,

3, the measurement of dielectric loss Angle

It is a highly alert degree of experimental items, it is able to detect electrical equipment insulation all be affected with damp be affected with damp, degradation, transformation, and small volume was test equipment or through local faults, but when the participants product volume is bigger, the shortcomings of the volume and the hour, it would be difficult to find in this way, it is broadly used in electrical and electrical equipment replacement and prevent sexual experiment,

4, ac withstand voltage test

It is one of the destructive nature of experiment, it can be further confirmed the electrical equipment insulation faults, ac withstand voltage test is to determine the most severe of electrical equipment insulation intensity, the most useful and direct experiment method, it can detect the insulation in the most general runtime faults, for judging whether the electrical equipment in operation in place resolution,

5, dc withstand voltage test

It can find equipment insulation be affected with damp be affected with damp, in addition to degradation, to find local faults exist some special function of the insulation, dc withstand voltage test can detect some communication) compression experiments find faults, both ac and dc withstand voltage test experiment) to replace each other, must be simultaneous use to prevent sexual experiment, especially motor, wire and other more as the dc withstand voltage test,

6, non destructive experiment and the destructive nature of

Non destructive experiment: is in low voltage (less than or close to the additional voltage) under the experiment, measuring insulation resistance, leakage current and dielectric loss Angle names for non destructive experiments, such as

Destructive experiment: refers to the under voltage is higher than the task of experiment, also known as compression experiment, the experiment on the electrical equipment insulation to impose rules experiment voltage, power test under the voltage tolerance, dc withstand voltage test and experiment to destroy all ac withstand voltage test,

Experiment is coupled to the two phase, should be the first line of the destructive nature of conservative experiment, then carries on the destructive nature of the experiment, it can prevent the part shouldn't breakdown incident,