Section IV
Multiple Unit Configuration
006-0006885 08/14/18
Rev H
28 of 48
MINV-4000-1U-28 Guide www.synqor.com
Series Split-Phase Connection of AC Outputs
Two MINV units can have their AC OUTPUTs connected in series to create an output voltage
that is twice that of the output voltage of the individual MINV units. For instance, if the MINV
units each create a 115 Vac output, the series configuration will create a 230 Vac output at twice
the power level of a single unit. Or, if the MINV units each create a 230 Vac output, the series
configuration will create a 460 Vac output at twice the power level of a single unit.
The center node between the two outputs in the series configuration should be considered the
“neutral” wire, and therefore kept at a potential close to Protective Earth Ground (PEGND).
The other two AC OUTPUT wires (one from each MINV unit) are electrically “hot” (meaning
at a high potential relative to the neutral or PEGND). One will be phase- shifted by 180 degrees
(one-half cycle) from the other, meaning that when one hot wire is at its positive peak the other
is at its negative peak, and vice versa. The voltage between these two hot wires is therefore twice
that of either hot wire compared to the neutral wire. This configuration is called “Split-Phase”.
When ordering, select the “F: Floating” option for MINV units configured in this manner.
Contact the SynQor factory for N+1 redundant Split Phase systems.
The wiring diagram for the AC OUTPUT cables and the CONFIGURATION cable for the Split-Phase
configuration is shown below:
L2
L1
N
TO LOAD
PEGND
L2
(A)
N
(B)
PEGND
(C)
L1
(A)
N
(B)
PEGND
(C)
CONFIGURATION cable SYN-9613
Line 2
Line 1
AC OUTPUT
AC OUTPUT
If the user is providing the AC OUTPUT cable, all the cable sections should have the following
minimum wire size, depending on whether the AC OUTPUT of the individual MINV units is
115 Vac or 230 Vac.
MINV AC Output Voltage
Cable Minimum Wire Size
115 Vac
#8AWG (10 mm
2
)
230 Vac
#10AWG (6 mm
2
)
