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5. INSTALLATION and WIRING
Do not attempt to make connections to the Re-Combiner if not qualified for
electrical work.
Completing the installation of the Re-Combiner (see Figure 5.1) requires: (1) field wiring from
the (up-to-five) PV Output Circuits, originating in CR1500-400 PV Source Circuit Combiners in
the PV array field, to the terminals in the Re-Combiner and (2) field wiring from the terminals in
the DCR to the terminals in the Dynapower DC/DC Converter. In addition, the Re-Combiner has
two factory pre-wired connections: DC power from the Re-Combiner to the DC input of the XGI
1500 inverters, and the communications wiring harness that also connects the Re-Combiner to
the XGI 1500 inverters. Figure 5.1 shows the maximum wire compatibility for the field-wired
connections, and the as-delivered factory-wired conductor specifications.
FIELD-WIRED
From PV Source Circuit Combiners
Max: 2 cond x 500 kcmil per pole, Cu or Alum or
1 cond x 750 kcmil per pole, Cu or Alum
EGC: 3 AWG Cu, or 1 AWG Alum
Figure 5.1 – Specs for Field Wiring to the DCR-1500 Re-Combiner
STEP 1: Disconnect all Equipment Before Wiring to the Re-Combiner
BEFORE removing the Re-Combiner's covers:
Open all five DC switches on the Re-Combiner, and
Open the DC switch between the Dynapower DC/DC Converter and the Battery
Subsystem, to disconnect the batteries from the system.
Yaskawa Solectria Solar
FACTORY PRE-WIRED
Comms wiring harness
to XGI 1500 inverters
DOCR-071068-E
FACTORY PRE-WIRED
To XGI 1500 inverters
4/0 AWG Cu conductors
EGC: 4 AWG Cu
FIELD-WIRED
From DPS-500 (or -250)
Max 500 kcmil Cu conductors
2 per pole
EGC: 1/0 AWG Cu
Page 10 of 18
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