Voltage And Frequency Pickup And Dropout Settings - Kohler MPAC 1500 Manual

5.11.5 Voltage and Frequency Pickup
and Dropout Settings
The controller senses the voltage on both sources with
an accuracy of ±0.5%.
available when its voltage and frequency are within the
range of dropout settings. The debounce time prevents
nuisance transfers caused by brief voltage spikes and
Description
Normal source voltage
Emergency source voltage
Normal source frequency
(Gen-Gen mode of operation only)
Emergency source frequency
Figure 5-15 Pickup and Dropout Settings
TP-6714 4/10
A source is considered
Settings
Under voltage dropout
Under voltage pickup
Over voltage dropout
Over voltage pickup
Unbalance enable
Unbalance drop out
Unbalance pick up
Debounce time
Under voltage dropout
Under voltage pickup
Over voltage dropout
Over voltage pickup
Unbalance enable
Unbalance drop out
Unbalance pick up
Debounce time
Under frequency dropout
Under frequency pickup
Over frequency dropout
Over frequency pickup
Debounce time
Under frequency dropout
Under frequency pickup
Over frequency dropout
Over frequency pickup
Debounce time
dips. If the voltage or frequency of the active source is
outside the acceptable range for a length of time longer
than the debounce time, the system attempts to transfer
the load to the alternate source.
See Figure 5-15 for default settings and adjustment
ranges.
Default Setting
90%
90%
115% (110% for
600 V systems)
95%
Enable
20%
10%
0.5 seconds
90%
90%
115% (110% for
600 V systems)
95%
Enable
20%
10%
0.5 seconds
99%
90%
101%
110%
3 seconds
99%
90%
101%
110%
3 seconds
Adjustment Range
75% to 98% of Pickup
85% to 100% of Nominal
106% to 135% of Nominal
(maximum 690 Volts)
95 to 100% of Dropout
Enable or disabled
5% to 20%
3% to 18%
0.1 to 9.9 seconds
75% to 98% of Pickup
85% to 100% of Nominal
106% to 135% of Nominal
(Except 600 V Apps)
95 to 100% of Dropout
Enable or disabled
5 to 20%
3 to 18%
0.1 to 9.9 seconds
95% to 99% of Pickup
80% to 95% of Nominal
101% to 115% of Pickup
105% to 120% of Nominal
0.1 to 15 seconds
95% to 99% of Pickup
80% to 95% of Nominal
101% to 115% of Pickup
105% to 120% of Nominal
0.1 to 15 seconds
Section 5 Setup 75