MV variable speed drive
Grounding switch and key exchange unit
To help ensure absence of voltage in the cabinets during maintenance, there is a grounding switch with three terminals each installed in the equipment to help ensure that the DC bus is grounded (DC+, DC- and DC0). The DC bus can only be grounded using the switch when access to the inside of the cabinet is required. This component helps ensure the drive is de-energized whenever operations on the inside of the cabinet are performed.
Component Characteristics Grounding switch Voltage: 7.2 KV Short-circuit current: 16 kAPrevious Page