Ingeteam INGECON SUN PowerMax TL U B 1000 Vdc Series Installation And Operation Manual page 139

Shutting down the unit
7. Check that the DC switch is in OFF. If the switch has not moved automatically to the OFF position,
operate it manually. If manual actions are necessary, wait 10 minutes for the internal capacities to
discharge.
8. Block the DC switch via consignment lock. "Personnel at work" will be posted.
9. Open the thermomagnetic circuit breaker -Q5. "Personnel at work" will be posted.
10. Open the thermomagnetic circuit breaker -Q4. "Personnel at work" will be posted.
11. Open the thermomagnetic circuit breaker -Q2. "Personnel at work" will be posted.
12. Disconnect the voltage at the main inverter AC supply, located in the DCAC connections module. This
action will need to be carried out by means of an element external to the unit. If it is not possible to
disconnect the main AC supply from outside the unit, bear in mind that the AC busbars will be live and
work must be carried out using the appropriate PPE.
13. Isolate the PV array powering the DCAC connections module from the outside. If it is not possible to
disconnect the PV array that powers the DCAC connections module outside of it, bear in mind that the DC
fuses and busbars will be live and work must be carried out using the appropriate PPE.
14. Check that there is no voltage by using an appropriate multimeter between the following points.
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