According to the structure of the cabinet, the 10kv high-voltage switchgear can be divided into four categories: metal closing interval type switchgear, metal closing armoring type switchgear, metal closing box type switchgear and open type switchgear. 10kv high voltage switchgear is generally used in the power supply company substation, power failure will inevitably occur, the following zhongyi electric teach you how to judge the 10kv high voltage switchgear common faults.
1. The switch does not work:
(1) whether the dc power switch is normal or the power supply disappears;
(2) the control circuit is broken or the wiring is loose;
(3) whether the auxiliary contact is converted, whether the contact is good, and whether the wiring is loose;
(4) poor contact of control handle or burned contact;
(5) close and far control whether the transfer switch is converted; Whether remote control (or proximity control) signals are introduced;
(6) whether the spring stores energy;
(7) whether the auxiliary switch position of control loop s1-8 is correct and short;
(8) whether the car position is correct;
(9) whether the switch latching relay works;
(10) whether the aviation plug is in the correct position;
(11) whether there is grounding in the control loop;
(12) integrated circuit board burning;
2. The handcart switch cannot be pushed:
(1) whether the grounding brake is in the closing position;
(2) whether the switch is in the closing position;
(3) the isolation baffle structure is stuck, and the baffle cannot be opened;
(4) loose or deformed handcart chutes;
3. Switch jump:
(1) the auxiliary switch changes the contact too fast;
(2) the half-shaft is not deep enough;
(3) the main dc voltage is insufficient, the voltage drop is large, or the operation is frequent;
(4) the travel of the moving iron core of the electromagnetic mechanism is not enough, and the gap between the ejector and the two coupling plates is large.
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