Insulating boots and insulating gloves are the final physical barriers for power workers to prevent electric shock injuries, and they belong to auxiliary insulating safety tools. According to the requirements of national power safety regulations, such tools need to undergo regular preventive withstand voltage tests to ensure their insulation performance is intact and to avoid failure during operation due to aging or damage, thereby preventing personal injury accidents.
Insulating boot and insulating glove testing equipment is a dedicated device specifically used for conducting power frequency withstand voltage tests and leakage current detection on personal protective equipment such as insulating boots and insulating gloves.
Core functions
Withstand voltage test: Apply an alternating current power frequency voltage far higher than the rated working voltage to the insulating boots or insulating gloves, and maintain the specified test time. Check if the test item exhibits breakdown, thereby verifying the insulation withstand capability.
Leakage current test: During the withstand voltage test, accurately measure the leakage current value flowing through the test item. This indicator is the key basis for judging the insulation performance. Even if the test item does not undergo breakdown, if the leakage current exceeds the standard value, it is also determined as a failed test.
Typical test process (taking insulating gloves as an example)
Test preparation: Place the dedicated support in the insulating glove, inject the specified concentration of salt water into the glove, and control the liquid level below the glove opening; Hang the glove in the test water tank, ensuring that the outer skin of the glove is completely immersed in the salt water in the water tank, and the gap between the glove opening and the water surface meets the requirements of relevant regulations.
Connection operation: Connect the high-voltage lead to the salt water electrodes inside the glove, and the test water tank needs to be reliably grounded; Connect the leakage current meter in series to the grounding circuit to ensure firm connection and good contact.
Parameter setting: According to the voltage level of the insulating glove and the corresponding regulations, set the test voltage value and withstand voltage duration on the device.
Start the test: Start the test device, steadily increase the voltage to the set test voltage value and start timing; During the withstand voltage process, continuously observe whether the voltage remains stable and read the leakage current value in real time, and make process records. Result determination
Pass: During the specified withstand voltage period, the test sample did not exhibit breakdown or flashover phenomena, and the leakage current value conformed to the standard requirements.
Fail: During the test, the test sample experienced breakdown, flashover, or the leakage current value exceeded the standard value.
Post-processing: After the test duration ends, the voltage is smoothly reduced to zero using the device, and then the power supply is disconnected; the test sample is removed, and the sample is thoroughly rinsed with clean water and dried. For the test samples that pass, a test pass label is affixed, which should indicate the test date, validity period, and the information of the tester; for the test samples that fail, they should be immediately scrapped and destroyed, and they are prohibited from being used again.
Main technical parameters and compliance with standards Main technical parameters
Output voltage range: Standardly covers 0-50kV. Higher voltage specifications can be selected based on actual testing requirements to meet the testing requirements for various voltage levels of insulating boots and insulating gloves.
Leakage current measurement range: 0-20mA. It has high-precision measurement capabilities, ensuring accurate detection data.
Timing range: 0-10 minutes. The withstand voltage holding time can be flexibly set according to the test procedures.
Compliance with standards
GB 12011-2009 “Foot Protection – Electrical Insulating Shoes”
GB/T 17622-2008 “Insulating Gloves for Live Working”
DL/T 1476-2015 “Preventive Test Procedures for Safety Tools in Electric Power Industry”
Provisions of relevant enterprises in the power industry
Selection and usage precautions
Selection principle
Based on the higher voltage levels of insulating boots and insulating gloves that the unit needs to test on a daily basis, the rated voltage and capacity of the test device should be reasonably selected to ensure that the device meets the actual testing requirements.
Usage precautions
Safe operation: This device is a high-voltage testing equipment. Operators must undergo professional training and pass the assessment before they can operate it; during the operation, strict adherence to the equipment operation procedures is required. The test area should be surrounded by isolation fences and marked with obvious high-voltage warning signs. No irrelevant personnel are allowed to enter.
Test environment: The test should be conducted in a dry, ventilated, and dust-free indoor environment. Environmental factors should be avoided to prevent the accuracy of the test results and the safety of the equipment operation from being affected.
Regular calibration: The high-voltage meters, current meters, and other measuring components of the device should be sent to qualified metrological testing institutions for calibration regularly to ensure that the measurement accuracy meets the requirements and the test data is valid.
Procedures compliance: The entire testing process must strictly follow the latest national, industry, and enterprise-related procedures and standards. It is strictly prohibited to lower the test standards or change the test parameters at will.
Post time: Jan-29-2026