2, insulating boots loaded with steel ball test, water tank with water so that the sponge can be fully immersed in water, will be a consistent with the boot number of the boot into the boot, the high-voltage electrode placed in the insulating boots, so that the high-voltage electrode and the metal contact, and then in the metal sheet on the metal ball diameter of not more than 4mm, the height of which is not less than 15mm.
3, set up according to relevant regulations Site, connect the equipment connecting line, there are conditions in the region should be responsible for the safety of the personnel present to guide.
4, the control box, the test transformer and the test electrode ground terminal must be reliably grounded.
Fifth, the use of
1, according to the test requirements of the correct wiring.
(1) the power cord of the control box is connected to 220V AC power supply;
(2) the control box and the test transformer are connected through a special test line;
(3) the transformer high voltage line is connected to the high-voltage end of the test electrode of the insulating glove (milliampere meter bracket);
(4) the ball electrode at the lower end of the milliampere meter is placed inside the test article;
(5) The grounding end of the control box, test transformer and test electrode is reliably grounded.
2, installation, wiring is completed, the first no-load test. Before the test to check the operating table wires, screws, components between the wires are loose.
(1) Close the main switch of incoming power supply, at this time, "power indicator" is on;
(2) Rotate the regulator to the left to make it return to zero, "zero indicator" is on;
(3) Press the "start" button. "start" button, "withstand voltage indicator" is lit;
(4) slowly rotate the regulator to the right, observe the high-voltage meter head, low-voltage current meter head readings, the high-voltage to the target voltage value and then stop boosting;
(5) press the "Timing" button, the timer starts timing, at this time to observe the readings of the meter head with or without anomalies, withstand voltage timing to reach the set time, the timer action, the alarm indicator light and alarm sound, press the "withstand voltage timing" button, the alarm sound lifted;
< p>(6) the regulator back to zero, press the "stop" button, the test is completed, disconnect the power switch.No load test is completed, you can do the physical test.
a. The insulated gloves or boots to be tested placed in the test bucket, with fixed clamps fixed firmly, if necessary, adjust the length of the electrodes;
b. With a water pipe to the test gloves or boots filled with water, so that the water level from the upper edge of the 3cm or so appropriate;
c. With a water pipe to the test bucket of water, so that the level of the water level with the gloves or boots in the water level is consistent, but be careful to note that the barrel water level should be Distance from the upper edge of the 3cm or so to avoid overflow;
d. Insulation boots with steel ball test, so that the sponge can be fully soaked, will be a consistent with the boot number of the metal plate into the boot, the high-voltage electrode placed in an insulated boot, so that the high-voltage electrode in contact with the metal plate, and then in the metal plate on the metal plate full of metal balls with a diameter of not more than 4mm, the height of which should not be less than 15mm.
e. Start the test, the test steps are the same as the above no-load test, but it should be noted that the test voltage of the insulating gloves is 15kV, and the insulating boots is 18kV;
f. During the test, six milliamperes will show the leakage current of each corresponding test piece, and if the leakage current exceeds the standard value, it will be regarded as a breakdown, which means that the test piece is unqualified.