Section IV
Multiple Unit Configuration
006-0006885 08/14/18
Rev H
29 of 48
MINV-4000-1U-28 Guide www.synqor.com
Series 3-Phase Connection of AC Outputs
Three MINV units can have their AC OUTPUTs connected such that they share a common “neutral”
and then controlled such that their output voltages are phased by 120 degrees (one- third cycle)
from each other. This creates a three-phase output where the line-to-neutral voltage is the rated
voltage of the individual MINV units (e.g. 115 Vac or 230 Vac line-to-neutral) and the line-to-line
voltage is 1.73 times higher (e.g. 200 Vac or 400 Vac line-to-line). When ordering, select the
“F: Floating” option for MINV units configured in this manner.
Contact the SynQor factory for N+1 redundant 3-Phase systems.
The wiring diagram for the AC OUTPUT cables and the CONFIGURATION cables for the 3-Phase
configuration is shown below:
L2
L1
L3
N
PEGND
N
PEGND
N
PEGND
Line 2
Line 1
Line 3
L3 N
L2 L1
PEGND
CONFIGURATION cable SYN-9617
AC OUTPUT
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
)
The “neutral” wire of the 3-Phase AC OUTPUT should be kept at a potential close to Protective
Earth Ground (PEGND).
Note: The three connectors of the SYN-9617 CONFIGURATION CABLE are labeled “Line 1”,
“Line 2” and “Line 3”. The MINV unit that receives the “Line 1” connector will have an AC OUTPUT
that is phased 120 degrees (one-third cycle) ahead of the MINV unit that receives the “Line 2”
connector, which in turn will have an AC OUTPUT that is phased 120 degrees (one-third cycle)
ahead of the MINV unit that receives the “Line 3” connector. Connecting the three AC OUTPUTs
to the three line wires of the AC OUTPUT cable in the proper order may be important for some
loads, such as motors.
