10
INSTALLATION, CONNECTION AND ENERGIZATION
WARNING!
If the input transformer circuit breaker does not open with the “POWER OFF” command, then open it manually.
5. Follow the DC link voltage decrease through P0004 on the HMI and the HVM neon lamps.
When the DC link voltage crosses below 200 V the neon lamps start flashing with progressively lower frequency until going off completely.
Wait until the DC link voltage displayed at P0004 on the HMI gets below 25 V.
6. Press the emergency pushbutton located on the control column door and remove its key.
7. At the input transformer circuit breaker cubicle, extract the circuit breaker from its operation position and close the transformer primary
winding grounding switch. Lock the cubicle with the key and/or put a warning sign “System in maintenance”.
8. Switch off the Q2 circuit breaker in the control column and lock it in the open position with a padlock and/or put a warning sign “System
in maintenance”.
9. Switch off the Q1 circuit breaker in the control column. Remove the auxiliary power supply.
10. It is only after the sequence of procedures described here that medium voltage compartment doors can be opened.
DANGER!
If it were not possible to follow the discharge of the DC link capacitors through the parameter P0004, as well as through the
HVM board neon lamps, due to a malfunction or a previous de energization, follow the instructions 5) through 8) and wait 10
minutes more.
DANGER!
S’il n’était pas possible de suivre la décharge des condensateurs de liaison CC avec le paramètre P0004 et les lampes à néon
de la carte HVM en raison d’un dysfonctionnement ou une mise hors tension préalable, suivez les instructions 5) jusqu’à 8) et
attendez 10 minutes supplémentaires.
MVW01 | 10-21
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