Kohler KCC, Эксплуатация и установка

Страница: 34 / 60

TP-6833 2/16 34 Section 3 Three-Source Systems
3.5 Three-Source System
Connection
Hazardous voltage.
Will cause severe injury or death.
Disconnect all power sources before
opening the enclosure.
DANGER
Servicing the transfer switch. Hazardous voltage can
cause severe injury or death. Deenergize all power sources
before servicing. Turn off the main circuit breakers of all
transfer switch power sources and disable all generator sets
as follows: (1) Press the generator set off/reset button to shut
down the generator set. (2) Disconnect power to all battery
chargers. (3) Disconnect all battery cables, negative (--) leads
first. Reconnect negative (--) leads last when reconnecting the
battery cables after servicing. Follow these precautions to
prevent the starting of generator sets by an automatic transfer
switch, remote start/stop switch, or engine start command
from a remote computer. Before servicing any components
inside the enclosure: (1) Remove all jewelry. (2) Stand on a
dry, approved electrically insulated mat. (3) Test circuits with a
voltmeter to verify that they are deenergized.
Making line or auxiliary connections. Hazardous voltage
can cause severe injury or death. To prevent electrical
shock deenergize the normal power source before making any
line or auxiliary connections.
See Figure 3-1 and Figure 3-2 for connections during
the following steps.
1. Connect the power sources to the transfer
switches as described below. Refer to the transfer
switch operation/installation manual or specification
sheet for cable sizes. See Figure 3-1 for
connections.
a. Connect the utility power source to the normal
side of ATS1.
b. Connect the load to the load side of ATS1.
c. Connect the emergency side of ATS1 to the
load side of ATS2.
d. Connect generator set 1 to the normal side of
ATS2.
e. Connect generator set 2 to the emergency side
of ATS2.
2. Three-source systems require the following input/
output connections to control the engine start
commands for generator sets 1 and 2. Observe the
polarity of all connections shown in Figure 3-2.
Use wire sizes from #14 AWG to #20 AWG for
EBSM and I/O module connections.
a. Connect the ATS2 engine start contacts to the
engine start circuit on generator set 2 (G2).
Note: See the Installation Section for the engine
start contact locations. Engine start
contacts are labeled with a decal.
b. Connect one ATS1 programmable output from
the controller to one ATS2 main logic board
programmable input as shown in Figure 3-2.
This I/O connection will be set to Three-Source
System Disable.
c. Connect one ATS2 programmable output from
the controller to the engine start connection on
generator set 1 (G1). The ATS1 programmable
output will be set to Source N Start Signal.
3. Connect battery power. Use #14-28 AWG wire to
connect the generator set engine starting battery
(or batteries) to the BATT1 terminals on terminal
block TB13 on the external battery supply module
(EBSM). (Another battery(ies) can be connected
to terminals BATT2 but is not required.) Follow the
marking on the board for the positive (+) and
negative (--) connections. See Figure 4-16 and
Figure 4-17.
Note: If the battery connections are reversed, red
LED1 or LED2 will light. Incorrect battery
connections can damage the battery
module.
4. Set voltage selector switch SW11-1 on the battery
module (EBSM) to 12 or 24VDC.
Note: See Section 4.3.3 for more information on
the EBSM.
5. Assign the ATS1 programmable output connected
in step 2b. to Three-Source System Disable.
6. Assign the following inputs and outputs for the
second transfer switch.
a. Assign ATS2 controller programmable input 1
to Three-Source System Disable.
b. Assign the ATS2 controller programmable
output connected in step 2c. to Source N Start
Signal.