How to operate the drop out fuse accurately?
1, the operation of the drop type fuse must have two people, one person is responsible for the operation, the other person is responsible for monitoring. Do not wear qualified insulation gloves, insulation shoes, and safety goggles when operating the fuse. Use qualified insulation rods that match the voltage level. Do not operate the drop type fuse in thunderstorm weather.
2. When pulling the brake operation, the conventional operation is to break the central phase first, then pull the leeward side phase, and then pull the side phase of the head wind. Why do you want to operate this way, this is because when the distribution transformer is converted from three phases to two phases, the arc spark that pulls off the central phase is small, and will not constitute an interphase short circuit. When the lee side phase is selected, the distance between the lee side and the top wind side phase is increased because the central phase has been disconnected, even if the overvoltage, the probability of short-circuit between the phases is very small. After pulling off the wind edge phase, at this time only the capacitive current to the ground is left, and the spark generated by the disconnect is very slight.
3. When closing the switch, the operation steps are opposite to the steps of pulling the switch.
