Rules for the use of electrical protective equipment
Electrical insulation isolators are designed to ensure the safety of maintenance personnel when performing work in existing electrical installations. Depending on the purpose and type, the electrical protective device can provide both full protection of the person from the voltage, and act as additional protection.
Electrical installations carry lots of danger. Every year, a number of accidents occur in electrical installations as a result of workers not complying with required protection methods. Additionally, misusing the protective equipment can be dangerous.
Therefore, it is very important to know and be able to correctly apply electrical protective equipment when performing electrical work.
General recommendations for all electrical protective equipment
Here are the basic rules for the use of electrical protective equipment, which apply to all protective equipment.
If any given protection is necessary to have, first check its condition. Any protective gear must be in suitable condition for the work. For example, the insulating medium should be clean and free of contamination. It is what prevents electric current to get to your body.
Any type of protective equipment must undergo a periodical test – a test for suitability for operation in electrical environments. Therefore, before applying the protective device, it is necessary to check its expiry date – the date of the next test.
If the electrical protective device is contaminated, the insulation is damaged or the periodic test has passed, then such a protective device cannot be used, as this can result in an electric shock to the person. Such a protective device must be taken out of service for testing and repairing.
In addition, it is necessary to keep the protective insulation in a clean condition. In particular, this applies to dielectric gloves, shoes and other protective equipment, which quickly become unusable if various aggressive liquids and lubricants enter their rubber surfaces.
Dielectric gloves or insulated gloves
Dielectric gloves serve as the main means of protection against electric shock in electrical installations up to 1000 V and as additional protection in electrical installations with voltages above 1000 V.
Use only absolutely dry dielectric gloves. If the room where they are stored has an increased level of humidity, then before performing work using gloves, they should be dried in a room at room temperature.
Before using these gloves, in addition to an external examination, checking the date of the next test, it is necessary to check them for the absence of punctures. To do this, you need to start twisting them from the edge to the side of your fingers. In this case, the glove is slightly inflated and by pressing it is possible to detect possible punctures through which air will escape.
Voltage indicators are used in electrical installations to check the presence or absence of voltage on current-carrying parts.
If the voltage indicator is equipped with a voltage class switch, make sure that the selected mode is correct before using it.
Voltage detectors are attached to the protective helmet of the worker or to the wrist and are triggered when the person approaches the current-carrying parts that are under voltage. Voltage detectors cannot be used as the primary means for checking for voltage failure. For this purpose, only voltage indicators should be used.
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