ABB PVS-60-TL-US Product Manual page 147

8 - Maintenance
CHECK STATUS √ or X
Prepare for the work and identify the work location and equipment
PPE and Equipment Check
PPE wearing
OPERATIONS AT PLANT LEVEL [*]
Check the absence of dangerous voltages on inverter chassis respect ground
Operations in External AC switch
Operations in External DC Switch
OPERATIONS AT INVERTER LEVEL
Operations on internal DC switches (If present)
verification of the absence of current on DC cables and disconnection of the DC
quick-fit connectors
Wait the discharge of the internal capacitor
Open the cover and visually inspect the components
VOLTAGE ABSENCE TEST
Voltage absence check inside wiring box on DC side
Voltage absence check inside wiring box on AC Side
ISSUE WORK PERMIT
Issue work permit and "Walk the permit" – Check list filling
== ONLY if all checks are POSITIVE (√) the ACCESS IS ALLOWED =
[*]: Identification of the external switch may require the cooperation of the plant manager and it must be
included in the switching plan defined during the preparation of the work.
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