Disconnecting The Inverter From Voltage Sources; Stp 15000Tl / Stp 20000Tl / Stp 25000Tl - SMA Sunny Tripower 15000TL Instrucciones Para La Sustitución

SMA Solar Technology AG
5

Disconnecting the Inverter from Voltage Sources

5.1

STP 15000TL / STP 20000TL / STP 25000TL

Prior to performing any work on the inverter, 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.
Disconnecting the Inverter from Voltage Sources
1. Disconnect the circuit breaker from all 3 line conductors and secure against reconnection.
2. If the multifunction relay is used, switch off any supply voltage to the load.
3. Turn the DC load-break switch to the position O.
4. Wait until the LEDs have gone out and, if necessary, the load connected to the multifunction
relay has been switched off.
5. Use a current clamp to ensure that no current is present in the DC cables.
6. Remove the DC load-break switch. To do so,
unscrew the 2 screws from the DC load-break switch
(hex socket, AF3).
Replacement Manual
5 Disconnecting the Inverter from Voltage Sources
WARNING
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