One, overview

1.1Use

According to the new State power (2002) No. 777 of the power security apparatus preventive testing procedures required more scientific, reasonably quick to complete the insulating gloves, insulating boots, insulating pads, such as auxiliary power frequency withstand voltage test of insulated tools.

Service insulated safety tools means dielectric strength is not under equipment or the operating voltage of the line, but is intended to strengthen the security of basic insulated safety tools to prevent the touch voltage, voltages, leakage current arcing damage to operators, not accept auxiliary insulated safety tools in direct contact with live parts of high voltage equipment. Belonging to this part of the security apparatus are: insulating gloves, insulating boots, insulated rubber mats.

This equipment is mainly used for insulating gloves, insulating boots and other safety tools for power-frequency voltage test in order to determine whether these tools conform to the conditions of use, and ensure the safety of staff.

1.2Experimental evidence

On November 7, 2002, released by the State power company to implement the prevention of power safety equipment testing procedures.

Two main features

2.1Checking leakage current according to the new industry standards as a useful reference, and more scientific.

2.2According to the new industry standard insulated boots with special electrodes without irrigation. Test of insulated boots can be put into use immediately, and improve the service life of insulated boots.

2.3Combined structure, move, transport, easy to prepare.

2.4Once while completing 3 double (6) pressure testing of insulated boots or gloves and accurately detect 6-channel leakage current.

2.5Automatic timing.

Three main technical index

Special electrode: ф 3mm Steel ball

Test voltage: AC 0—30Kv

Test current: 0—19.9mA

Current measurement accuracy: class 0.2

Voltage measurement accuracy: class 0.2

Maximum amount of test: 3Double /66 current detection

Power supply: AC 220V ±10%

Four, use method

By the test engine and test stand consists of two major parts. When after the opening two-part package, test rig fixed, and host, discharge bar ground wire connected. Connect the host and control line pressure tank.

Tests will be loaded steel ball within the sample (each about insulated boots 1.5-2.0Kilogram of metal balls), and then by a locking screw adjust the electrode rod, electrodes into insulated boots (gloves), to the same position as the steel ball surface.

After the completion of the above,

Power frequency withstand voltage test:

Test subjects loaded start → products → power on the high-voltage box → power → settings → go to settings on the host screen, set up the test voltage, leakage current, test time. Enter the test screen, press the high pressure, and open state automatically, press start, test automatically after buck.

DC voltage test:

Remove the transformer short circuit test start → → → on silicone rubber cable capacitance high-voltage electrodes fitted with power on the high-voltage box → subjects → power → settings → go to settings on the host screen, select DC test, set up the test voltage, leakage current, test time. Enter the test screen, press the high pressure, and open state automatically, press start, test automatically after pressure, test pressure → on → off → power down the host closes the end pressure tank power supply, Then after complete discharge in electrodes with discharge bats hanging the grounding wire, remove the high voltage silicone wire grounding, Finally remove the sample.

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Attention : High voltage switching regulator 0 o'clock can be closed, such as high-voltage switch pressed after no response, please test screen Press and hold the Pressure switch, regulator Back to zero , And then press the high pressure, and will hear the ' beep ' relay sucks and shuts the sound. Do not use the device for a long time, should make electric regulators leave zero, preventing zero-position switch spring loading for a long time lose their elasticity.

Five, maintenance

1, The device after use to ensure that test clean.

2, If not used for a long time should keep the accessories inside and outside dry electrode rod, insulating rods without water.

3, Before use measure the insulation resistance of insulating rods, when necessary, high voltage test voltage shall be not less than 50KV.

Six dedicated test Chamber

Special testing Chamber is used for insulating boots, insulated gloves test it as required under new rules designed not only the new lightweight composite structure and adopted the new requirements of special electrodes, and science based on leakage current of each sample as a scientific basis for judgment, innovation is a traditional test methods according to the new rules.

Special test chambers, test chamber device with insulated boots 6 per set, insulated gloves Chamber 6.