TP-6803 6/15 43Section 2 Accessories
2.9 PowerSync Automatic
Paralleling Module (APM)
The PowerSyncr Automatic Paralleling Module (APM)
allows the use of two Model 14RESA or two
20RESA/B/C/D generator sets in a single-phase
paralleling system to supply power to one building or
site. See Figure 2-17.
The APM provides a common connection point for
paralleling generators and permits individual control of
the generator connections, allowing for
synchronization, redundancy, and generator
management.
Generator management provides these features and
benefits:
D Generator management runs one generator set
when power requirements are low, and automatically
starts, synchronizes, and connects the second
generator set when the load increases.
D Longer generator life: Smart generator management
automatically operates the generator with the lowest
operating hours first, splitting the run time evenly
between the two generator sets and extending the life
of both units.
D Redundancy: If one generator set requires service or
even fails, the other generator set is still available to
provide power to your critical electronics.
D Dual fuels: Allows operation of one generator set on
natural gas and the other on LPG, if desired.
D Simultaneous exercise: Setting the exercise time
and date on one generator set schedules both
generator sets to exercise at the same time.
D Power during generator service: Customer override
allows maintenance or service to one generator set
while the other continues to run.
The following combinations of single-phase
generator sets can be paralleled:
D Two single-phase model 14RESA generator sets
with the same 110/220, 115/230, 120/240, 220, 230,
or 240 volt configuration
D Two single-phase model 20RESA/B/C/D generator
sets with the same 110/220, 115/230, 120/240, 220,
230 or 240 volt configuration
Automatic paralleling requires:
D Two single-phase generator sets as shown above
D RDC2 paralleling firmware version 105.4 or higher on
each generator set. Download the paralleling
firmware from TechTools.
D One Model RXT automatic transfer switch (ATS)
D One Automatic Paralleling Module (APM) kit
D A personal computer (laptop) with Kohlerr
SiteTecht software version 3.5 or higher is required
for system setup.
D A load management device is required if one
generator set cannot support the maximum total load.
The load management device (load shed kit or RXT
combined interface/load management board) is
necessary in order to shed non-critical loads in the event
that one generator set shuts down and the other
generator set cannot support all of the loads.
See TT-1596, provided with the APM, for complete
installation instructions. The APM and associated
equipment must be installed by a Kohlerr trained and
authorized distributor or dealer.
If the APM is not installed within sight of the generator
sets, local codes may require the installation of circuit
breakers near the APM. Circuit breaker kits are
available for installation inside the APM enclosure. See
TT-1596 for the circuit breaker kit numbers for the
14RESA and 20RESA/B/C/D generator sets.
zab26291
Figure 2-17 PowerSyncr Automatic Paralleling
Module
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