Eltek Valere Theia He-t Instrukcja Użytkownika Pobierz pdf (Strona 66)

66 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 March

8. Maintenance

This chapter explains how to switch OFF and discharge the inverter safely. It also provides an

overview of important regular maintenance procedures to ensure trouble-free operation of the

THEIA HE-t inverters. Finally, it is explained how to remove and return the inverters.

8.1. Switch-Off

Always turn OFF and disconnect the inverter in the following order prior to maintenance

work or repairs:

AC Side

• Turn OFF the AC circuit breaker(s).

DC Side

• Turn OFF the DC switch.

• Disconnect the connectors.

• Discharge the DC capacitor bank (See 8.1.1. Discharge).

DANGER: Never work on live wires!

Never perform work on the inverter without disconnecting both the DC and AC side

because of deadly voltages present at the terminals.

DANGER: Discharge the inverter completely prior to service or

maintenance!

High voltages are still present inside the inverter after switch OFF because of a

charged capacitor bank. It must be discharged before performing service or

maintenance work on the inverter.

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Eltek Valere Theia He-t Instrukcja Użytkownika Strona 66