The main function of the switchgear is to open and close, control and protect the electrical equipment during the process of power generation, transmission, distribution and power conversion. Components in the switchgear are mainly circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices.
High-voltage switchgear is used for power system power generation, transmission, distribution, power conversion and consumption from off, control or protection role, high-voltage switchgear as the voltage level in the 3.6kV ~ 550kV electrical products, high-voltage disconnector With the grounding switch, high-pressure load switch, automatic high-pressure coincidence and segmented, high-pressure operating agencies, high-voltage explosion-proof power distribution equipment and high voltage switchgear, and other categories.
High-voltage switchgear equipment design ensures the correct operation of the various parts of the switchgear interlocking, the operator of the various parts of the switchgear input and exit, in strict accordance with operating procedures and the requirements of this technical document, should not be free to operate, not even Should the operation is blocked, without analyzing the problem of mandatory operation, no side, will result in equipment damage, or even cause an accident.
Let's take a closer look at the operating requirements of high-voltage switchgear.
1, the operator to hold special post operating permit (high-pressure network card), and high-pressure operation must be two people, one person operation, one guardianship.
2, the operator must understand the status of high voltage switchgear and work content, familiar with the operation of the high voltage switchgear performance and operation methods, the operation should be well organized safety measures and safety technical measures, lightning bar forbid brake operation;
3, it is forbidden to operate the high-pressure RMU;
4, before SF6 switchgear operation should first check whether the pressure gauge SF6 instructions in the normal range (not less than 5 atm)
5, the tools used must meet the safety standards, insulation gloves should be inspected prior to operation, insulated shoes, operating rod, if damp, broken, damaged, and insulation registration is lower than the voltage to be operated, the operation is prohibited.
6, the operation should wear good insulation, wear insulated gloves.
7, in strict accordance with the order of operations.
8, After the power cut should be high voltage switchboard hanging warning signs and locked.
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