Kohler 27EFOZ, Service Manual

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TP-5936 7/04 46 Section 10 Voltage Reconnection and Wiring Diagrams
4 3 2 1
Stator Leads
L0
GRD.
L2
L1
L0 (Neutral)
Line
Side
Factory
Two-Pole
Circuit
Breaker
Ground
Load
Side
60 Hz 50 Hz
L0--L1 100--120 Volt 100--120 Volt
L0--L2 100--120 Volt 100--120 Volt
L1--L2 200--240 Volt 200--240 Volt
Figure 10-3 100--120/200--240-Volt, 3-Wire
Configuration
4 3 2 1
Stator Leads
L0
GRD.
L1
L0 (Neutral)
Line
Side
Single-Pole
Circuit
Breaker
Ground
Load
Side
Tape to insulate
from ground
60 Hz
L0--L1 200-240 Volt 200--220--240 Volt
50 Hz
Figure 10-4 200--220--240-Volt 2-Wire Configuration
10.1.2 100--120-/200--240-Volt
Configurations
The 100--120/200--240-volt configuration does not use
a jumper lead. If the unit was originally wired for straight
100--120 volt, 3 wire, remove the jumper lead (see
Figure 10-1 for location). Select a two-pole circuit
breaker. Application of two single-pole circuit breakers
does not conform to NEC requirements for supplying a
200--240-volt
load, even if the breakers are
mechanically attached together. Leads L1 and L2 are
for different phases;
never connect them together.
10.1.3 200--240-Volt Configurations
The 200--240-volt configuration does not use a jumper
lead. If the unit was originally wired for straight 100--120
volt, 3 wire, remove the jumper lead (see Figure 10-1 for
location).
10.2 12-Lead Reconnection
The following reconnection procedure details voltage
reconnections only.
If the generator set requires
frequency changes, adjust the governor and voltage
regulator as described earlier in Section 7.5.
The following information illustrates the reconnection of
12-lead generator sets. In all cases, follow the National
Electrical Code (NEC) guidelines.
Reconnect the stator leads of the generator set to
change output phase or voltage. Refer to the following
procedure and connection schematics. Follow all safety
precautions at the front of this manual during
reconnection procedure.
NOTICE
Voltage reconnection. Affix a notice to the generator set after
reconnecting the set to a voltage different from the voltage on
the nameplate. Order voltage reconnection decal 246242
from an authorized service distributor/dealer.
Reconnection Procedure
1. Move the generator set start/stop switch to STOP
position.
2. Disconnect the engine starting battery, the
negative (--) lead first. Disconnect the power to the
battery charger, if equipped.
3. Use Figure 10-3 or Figure 10-4 to determine the
generator set voltage configuration. Note the
original voltage and reconnect as needed.