Connection Methods - SolarEdge SE K Series Installation Manual

50 Connection Methods
A combiner box is an electrical distribution box that my also host DC circuit breakers.
The main purpose of the box is to combine multiple parallel strings of PV modules in
the system into a single DC output. This DC output is then connected to a single input
in the Synergy Manager of the inverter.
The combiner box should be installed and connected before connecting to the Synergy
Manager. This simplifies the commissioning of the inverter by allowing testing and
servicing the inverter.

Connection Methods

The Synergy Manager connects to the solar panels by the following interface methods:
DC input terminals (spring-clamps) for 12 PV strings inside the Synergy Manager
DC input terminals for three PV arrays inside the Synergy Manager
The DC Disconnect Switch of the Synergy Manager disconnects all ungrounded DC
conductors in compliance with the National Electric Code (NEC; Specifically NEC690.35,
which addresses ungrounded PV arrays). The Synergy Manager is rated to the
maximum operating conditions of the inverter.
Figure 22 shows the various methods of connection of DC from the PV strings and PV
arrays to Synergy Manager.
NOTE
In some Synergy Managers, the DC Surge Protection Device Board is mounted
horizontally.
Three Phase Inverters with Synergy Technology PN: SExxK-xxxxIxxxx