SMC Networks Sunny Mini Central SMC 5000A - Manual (Page 15)

SMA Technologie AG Overview of the Device
Installation Guide SMC50A_60A-IEN073320 Page 15
4.3 Electronic Solar Switch (ESS)
The Sunny Mini Central is equipped with the integrated electronic DC load-
disconnecting switch ESS. This reliably prevents the arcing that usually occurs when
disconnecting the inverter from the PV generator, which can cause personal injury and
may damage the inverter connections. To access the DC input plugs in order to safely
disconnect the PV generator from the inverter, you only need to pull on a grip handle
on the base of the inverter.
Disconnecting the inverter thus becomes a three-step process:
1.
Disconnecting the AC side
2. Pulling off the Electronic Solar Switch handle
3. Disconnecting the DC plug connectors
Assembly
The Electronic Solar Switch consists of a handle on the
underside of the inverter, and an assembly inside the
inverter.
A handle is mounted on the underside of the inverter which
covers the PV generator's connectors.
A plug is inside the handle. The Electronic
Solar Switch's connector is only visible
once the handle has been pulled.
The connector is fitted in the handle as a
floating connector, so that the handle
does not catch when being pulled from
the inverter.
WARNING!
Safe disconnection from the PV generator is only guaranteed after
removal of the Electronic Solar Switch, and of all DC plug connectors.
Do not tighten the connector's screws. Otherwise, safe
disconnection cannot be guaranteed.
Electronic Solar Switch handle
Plug