Disconnecting The Inverter From Voltage Sources - SMA Sunny Tripower X 12 Operating Manual

SMA Solar Technology AG
9

Disconnecting the Inverter from Voltage Sources

Prior to performing any work on the product, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000 V or higher.
Procedure:
1. Disconnect the AC miniature circuit breaker and secure against reconnection.
2. Turn the DC load-break switch of the inverter to
position O.
3. If your country requires the DC load-break switch to
be protected against reconnection, secure the DC
load-break switch against reconnection with a
suitable padlock.
4. If the multifunction relay is used, switch off any supply voltage to the load.
5. Switch off the supply voltage of the digital signal sources if necessary.
6. Wait until the LEDs have gone out.
Operating manual
9 Disconnecting the Inverter from Voltage Sources
WARNING
a = 14.5
b = 19.0
c = 5.0
mm
STPxx-50-BE-en-11 75