TAVRIDA ELECTRIC VCB15, Руководство по эксплуатации продукта, Страница: 40 / 116

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1. Close command input
2. Trip command input
1 2
Figure 30
CM_16_1 close and trip inputs
5.2.2 ISM Closing
To close the ISM main contacts, the CM close command should be applied. It is a “dry contact“ input; no external
voltage is required.
The close command will be accepted in the following cases:
• The CM state is “Ready” (Ready LED flashes green).
• No Trip command is applied.
• Mechanical and electrical interlock is unlocked.
If the “Close” command is applied and held before the CM is in a “Ready“ state, the Close command will not be
accepted.
If auxiliary power is unavailable, the manual generator CBunit_ManGen should be used to charge the CM capaci-
tors prior to applying the “Close” command to the ISM.
If manual generators CBunit_ManGen are used to charge the CM, the manual generator handle shall be rotated
until the Ready LED of the CM flashes green (approximately 30 seconds). Then the ISM close command can be
applied to the CM.
5.2.3 ISM Opening
To open the ISM main circuits, a trip command should be applied to the CM trip command input. It is a “dry
contact“ input, so no external voltage should be applied.
The trip command will be accepted if CM state is “Ready” (Ready LED flashes green), even up to 60 seconds after
a loss of auxiliary power supply.
If the trip command is applied and kept before the CM is in a “Ready“ state, the trip command will be accepted
after the CM is in a “Ready“ state. Holding the “Trip” command will block the “Close” command execution.