SMA SUNNY TRIPOWER CORE1-JP Manual page 14

5 Removing the BFS Assembly
Position Designation
A AC switch, only included in STP 50-US-40, STP 33-US-41, STP 50-US-41 and
STP 62-US-41
Procedure:
1. Disconnect the inverter from all voltage sources (see Section 4, page 11).
2. Wait 5 minutes. This will ensure that the capacitors are discharged.
3. Release (TX25) all 10 screws of the enclosure lid of
the DC-Connection Unit and remove the enclosure
lid carefully towards the front.
4. Discharge the DC Connection Unit at the contact points using a voltage detector without
intrinsic voltage source: Ensure that the residual voltage is less than 5 V.
5. On the right-hand side of the DC switch, each pair
of contacts DC+ against each contact DC- (red, blue
and white conductor against 1 black conductor;
gray, green and lilac conductor against 1 blue
conductor).
14 STP50-4x-BFS-RM-xx-11
SMA Solar Technology AG
10x
Replacement Manual