Kohler MPAC 1500 User Manual

TP-6714 4/10 75Section 5 Setup
5.11.5 Voltage and Frequency Pickup
and Dropout Settings
The controller senses the voltage on both sources with
an accuracy of ±0.5%. A source is considered
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
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.
Description Settings Default Setting Adjustment Range
Normal source voltage
Under voltage dropout 90% 75% to 98% of Pickup
Under voltage pickup 90% 85% to 100% of Nominal
Over voltage dropout 115% (110% for
600 V systems)
106% to 135% of Nominal
(maximum 690 Volts)
Over voltage pickup 95% 95 to 100% of Dropout
Unbalance enable Enable Enable or disabled
Unbalance drop out 20% 5% to 20%
Unbalance pick up 10% 3% to 18%
Debounce time 0.5 seconds 0.1 to 9.9 seconds
Emergency source voltage
Under voltage dropout 90% 75% to 98% of Pickup
Under voltage pickup 90% 85% to 100% of Nominal
Over voltage dropout 115% (110% for
600 V systems)
106% to 135% of Nominal
(Except 600 V Apps)
Over voltage pickup 95% 95 to 100% of Dropout
Unbalance enable Enable Enable or disabled
Unbalance drop out 20% 5to20%
Unbalance pick up 10% 3to18%
Debounce time 0.5 seconds 0.1 to 9.9 seconds
Normal source frequency
(Gen-Gen mode of operation only)
Under frequency dropout 99% 95% to 99% of Pickup
Under frequency pickup 90% 80% to 95% of Nominal
Over frequency dropout 101% 101% to 115% of Pickup
Over frequency pickup 110% 105% to 120% of Nominal
Debounce time 3 seconds 0.1 to 15 seconds
Emergency source frequency
Under frequency dropout 99% 95% to 99% of Pickup
Under frequency pickup 90% 80% to 95% of Nominal
Over frequency dropout 101% 101% to 115% of Pickup
Over frequency pickup 110% 105% to 120% of Nominal
Debounce time 3 seconds 0.1 to 15 seconds
Figure 5-15 Pickup and Dropout Settings

Kohler MPAC 1500 Specifications

General

Brand	Kohler
Model	MPAC 1500
Category	Controller
Language	English