High-voltage electrical switch, as the name suggests, is suitable for high-voltage circuit selection of a special switch, they are not only and ordinary switch socket can be automatically controlled and adjusted, another aspect of the words, higher voltage requirements of this switch carrying capacity is relatively good, will not be overloaded leading to potential hidden problems, so how can you choose? May wish to understand through the following, we explain is about the high voltage socket switch acquisition process precautions and other parameters of the description of the text.
A, high-voltage electrical switch is what
High-voltage appliances are used in high-voltage lines to realize the shutdown, disconnection, protection, control, regulation, measurement equipment. General high-voltage appliances include switching appliances, measuring appliances and current and voltage limiting appliances.
Internationally recognized demarcation line for high and low voltage appliances AC is 1kV (DC is 1500V). For more than 1kV AC for high-voltage appliances, 1kV and below for low-voltage appliances. Sometimes also included in the transformer high-voltage appliances.
In the high-voltage electrical product samples, drawings, technical documents, factory inspection reports, type test reports, instruction manuals and product nameplates, often using a variety of professional terminology, which indicates the product's structural features, technical performance and use of the environment. Understanding and mastering these terms can bring a lot of convenience for the work, now will be commonly used in high-voltage electrical terminology for an introduction.
Second, the use of safety precautions
1. High-voltage electrical equipment in the overhaul of quality control
High-voltage electrical equipment overhaul personnel shall be professionally trained, familiar with the internal structure of the equipment; the use of the unit's professional and technical personnel must be prepared to prepare a practical overhaul process. High-voltage electrical equipment dismantling overhaul should be carried out in dry weather with atmospheric humidity below 60%, and pay attention to prevent dust, impurities and moisture from intruding into the interior, and if necessary, constantly pass into the overhaul of the air chamber of the dry hot air to maintain the internal dryness.
2.? Abnormal sound analysis and judgment
High-voltage electrical equipment internal discharge sound similar to the sound of small raindrops falling on the metal shell, due to the local discharge sound frequency is relatively low, and the quality of the sound and its noise is also different, and sometimes you must stick your ear on the shell in order to hear; if it is a weak discharge, can not distinguish between the discharge sound from the internal or external electrical appliances, or can not determine whether the discharge sound, can be through the local discharge Measurement, noise analysis methods, regular inspection of the equipment.
3. Personal safety protection in the use of high-voltage electrical appliances
(1) indoor SF6 high-voltage electrical appliances, attention should be paid to gas-tight isolation between the main control room;
(2) SF6 equipment indoor must be equipped with ventilation equipment, into the room first ventilation;
above is recommended for everyone on the high-voltage electrical switches on various aspects of the information, and our Daily life in the common household porous socket switch as well as other electrical switches are not quite the same, one aspect of the higher voltage requires the switch has a certain carrying capacity, and will not be subjected to wear and tear as a result, another aspect also requires that the later if the current is overloaded, they can play a safe and solid safeguard role, can prevent additional fire hazards problem, then how should be specifically purchased and choose it, may wish to refer to the The above come together to understand.
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