TP-6196 10/09 81Section 6 Component Testing and Adjustment
6.7.3 Volts per Hertz (Hz) Adjustments
(Droop)
When the frequency falls below the cut-in frequency
(see Figure 6-13), output voltage is reduced to relieve
the engine. The magnitude of the voltage reduction is
set by the 3P parameter. Monitor engine speed and
output voltage as loads are applied.
! If there is excessive droop in engine speed and little
droop in voltage, increase the 3P value.
! If there is little engine speed droop but excessive
voltage droop, decrease the 3P value.
! Readjust the voltage stability (2P) and voltage (1P)
parameters after adjusting the 3P setting, if
necessary. See the instructions in Section NO TAG.
! Remember to save your settings.
Each step of 3P changes the amount of voltage droop
approximately 0.5% of system voltage for each cycle
(Hz) below the cut-in frequency. See Figure 6-15.
3P
Voltage Droop, % of System Voltage per
1 Hz Cycle Below Cut--In Frequency
0 0
1 0.5%
2 1.0%
3 1.5%
4 2.0%
5 2.5%
6 3.0%
7 3.5%
8 4.0%
9 4.5%
Figure 6-15 Voltage Droop Adjustments
6.7.4 Voltage Connections,
Single -Phase
Single-phase generator sets are available from the
factory connected for 110/220 volt 50 Hz or 120/240 volt
60 Hz. See Figure 6-16 for the factory connections.
These generator sets are not reconnectable.
4 3 2 1
Stator Leads
LO
GRD
L2
L1
LO (Neutral)
Line
Side
Factory two-pole
circuit breaker
Ground
Load
Side
TP-5867
L0-L1
L0-L2
L1-L2
60 Hz
120 volt
120 volt
240 volt
50 Hz
110 volt
110 volt
220 volt
Figure 6-16 110/220 and 120/240 Volt, 3-Wire
Configurations
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