Product Manual B
4. Operation - PowerCommand 1.13-2018
53A051X877 (Issue 7) Copyright © 2018 Cummins Inc.
NOTICE
The control box area is equipped with an ambient temperature
sensor for controlling the idle feature. Do not install any heaters in
the control box area as this can influence the sensor and lead to
engine damage.
5. After the generator set ramps up to rated speed, the generator set
provides voltage to the transfer switch, but the transfer switch does not
switch (allowing the voltage to go to the building) until after a delay.
FIGURE 18. TIME REMAINING UNTIL TRANSFER SCREEN
6. Five seconds after starting, the generator set provides a signal to the
transfer switch to transfer the building load to the generator set.
FIGURE 19. BUILDING LOAD TRANSFER IN PROCESS
7. The transfer switch switches the generator set power to the building load.
The building is now running on generator power.
FIGURE 20. GENERATOR SET POWERING BUILDING LOAD
8. When the utility power is back and providing voltage to the transfer
switch, the transfer switch waits for utility power stability.