Talking about the Characteristics of Power Test Stand for High and Low Voltage Switchgear
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Characteristics of the high and low voltage switchgear power test rigs 1. The 10A and 16A air switches are connected in series before the output terminal of the switchgear power-on test rig to provide short-circuit protection. According to the special requirements of the user, the 4, 2, 7, and 1 items in the parameters cannot be opened and closed at the same time and interlocked with each other; however, there is no interlocking between the 6 and 3 items and the above four items. Please pay attention to the requirements in use. It is best to have only one set of power output work at a time. Do not mistaken for other air switches and cause multiple outputs at the same time.
2. The contactors and relays of items 4, 2, 7, and 1 in the technical parameters of the switchgear power-on test bench require the “main control power switch†to be closed, the “control power supply†to be started, and then the relays corresponding to the corresponding loops can output each Road parameter power supply. When it is necessary to switch the four outputs, one of the relays should be opened and disconnected, and then the relay of the other loop should be closed. Otherwise, the relay of the next relay will refuse to operate.
3. The 8th and 5th items in the technical parameters are not controlled by the contactor and the relay. As long as the total control power switch is closed, single-phase AC220V output (fixed value) and three-phase AC380V output (fixed value) can be output.
4. The parameters and items 6 and 3 of the switchgear power-on test bench are turned on and off by the total control power switch and the respective air switch, and are not controlled by the contactor and the relay. 