An electroscope is a tool used to check whether a high-voltage line and power equipment are energized, and is the most basic safety device commonly used in substations. High-voltage electroscopes generally use glow as an indicator signal. New high-pressure electroscopes are also indicated by sound or language. High-voltage electroscope consists of metal working contacts, small helium bubbles, capacitors, and handles. Next Xiaobian introduced the use of electroscope and electrocautery precautions.
The use of electroscope
1. Check the voltage level of the rated voltage of the electrical equipment before use. Choose a qualified electroscope.
2, self-test must be used before the electrical inspection: the method is to press the test button with your finger, the light stops flashing, while intermittent alarm sound, indicating that the instrument is normal. Wearing insulating gloves, the hand-holding ring in the hand-shake includes the following parts. First of all, in the electrical equipment inspection, the test should gradually charge the electroscope close to the light-emitting device or sounding good performance before confirming that the electroscope self-check system should push the self-check button. Confirm that the electroscope is intact, you need to check the electrical equipment test, the test should also get closer and closer? The equipment in the test will be an electroscope until it touches the part of the conductive device, this process has been silent, if the direction of light, he can Deciding that the device is uncharged, in contrast, an abrupt glow or sound during the approach, ie the power-on of the device is stopped near the end of the electrical check.
3. For electrical inspection work of more than 10kV, you must follow the implementation of the "Electrical Safety Regulations". Workers wear insulated gloves, insulated boots and ensure a safe distance from live equipment.
4, electrical inspection, will hold the electroscope grip holding part and the following staff according to the "electrical safety work order" requirements, the first use of the inspection, verify that the electroscope really good performance in the power facilities.
Electroscope use precautions
1. High-voltage electroscopes that are put into use must be electroscopes that are qualified by electrical tests. High-voltage electroscopes must be tested periodically to ensure that they perform well.
2. The use of high-voltage electroscope must wear high-voltage insulating gloves, insulated shoes, and special supervision.
3, before the use of electroscope, should first check the electroscope is good, effective, but also in the voltage level of the live equipment to verify the correct alarm, can only need to ground the equipment on the inspection, prohibit the use of voltage level is not The corresponding electroscope conducts an electrical inspection to avoid making erroneous judgments during on-site testing.
4, when the inspection of electricity must be concentrated, can not do anything that has nothing to do with the inspection of electricity, such as access to mobile phones, etc., in order to avoid wrong test or missing test.
5. The inspection of the line shall be carried out phase by phase. When inspecting the circuit breaker or isolation switch or other maintenance equipment used for communication, the phases shall be inspected on both sides of the incoming and outgoing lines separately.
6. For the inspection of the multi-layer power lines erected on the same tower, a priori low pressure, posterior high pressure, a priori lower level, posterior upper level.
7, in the capacitor bank inspection, should be completed after its discharge is completed.
8, when the inspection of electricity to make the top of the electroscope metal working contact gradually close to the live part, to the bulb light or emit audible alarm signal, can not directly contact the live parts of electrical equipment. The electroscope should not be affected by the adjacent electrified body and send an erroneous signal.
9. If you need to use the ladder during the inspection, you should use a solid ladder of insulating material, and you should take the necessary anti-skid measures and prohibit the use of metal ladders.
10ã€After completion of the test, the grounding operation should be carried out immediately. The grounding should be interrupted for some reason after the inspection. If it is necessary to continue the operation, it must be re-inspected.
Editor's summary: The use of electroscopes and the precautions for the use of electroscopes are introduced here, and we hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.
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