140 Product manual - PVS-175-TL;A.1 Version
EN
16. Check list to be filled prior the access to the inverter
•
The purpose of checklist is to verify that all the operations mentioned in the procedure have been carried
out. The checklist below must be attached to the intervention report.
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 (If present)
OPERATIONS AT INVERTER LEVEL
Operations on internal AC switch (if present)
Operations on internal DC switches
Remove the DC quick fit connectors from wiring box
Wait the discharge of the internal capacitor
VOLTAGE ABSENCE TEST
Voltage absence check on DC side (wiring box)
Voltage absence check on AC Side (wiring box)
Voltage absence check on AC Capacitor (wiring box)
Voltage absence check on bulk capacitors (power module)
Voltage absence check on mid bulk point (power module)
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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