9 Disconnecting the product from voltage sources
SMA Solar Technology AG
Operating manual EVC22-3AC-20-BE-en-10 81
9 Disconnecting the product 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.
WARNING
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 measurement ranges designed for the maximum AC
voltage of the charging station.
Procedure:
1. Disconnect the AC miniature circuit breaker and secure against reconnection.
2. If the multifunction relay is used, switch off any supply voltage to the load.
3. Switch off the supply voltage of the digital signal sources if necessary.
4. Remove any charging cable that may be connected.
5. Wait until the LEDs have gone out.
6. Unscrew the two socket head cap screws (M5 x 8)
of the housing cover (TX25).
7. Release the locking tabs at the top of the cover of
the enclosure with a suitable tool (<Ø 5mm) .
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