SMA EV Charger 7.4 - Disconnecting from Power Sources; Procedure for Power Disconnection

9 Disconnecting the product from voltage sources
SMA Solar Technology AG
Operating manual EVCxx-10-BE-en-10 45
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.
Procedure:
1. Disconnect the circuit breaker and secure it against reconnection.
2. Remove charging cable from vehicle.
3. Loosen all 4 screws of the enclosure lid (TX25) and
remove it.
4x
4. For EVC22-3AC-10, check that there is no voltage
between L1 and N, L2 and N and L3 and N at the
terminal block for connecting the utility grid. Use a
suitable measuring device for this purpose.
For EVC7.4-1AC-10, check that there is no voltage
between L1 and N at the terminal block for
connecting the utility grid. Use a suitable measuring
device for this purpose.
L1
L2
L3
PE
0.00
N
N
0.00
EVC22-3AC-10
L1
L2
L3
PE
0.00
N
N
0.00
EVC7.4-1AC-10