Briggs & Stratton Power Products Automatic Transfer Switch
Installation and Owner’s Manual
SYSTEM OPERATION
To select automatic transfer operation, do the following:
1.Set circuit breaker that sends utility power to transfer switch to “On” position.
2.Set generator’s main circuit breaker to its “On” position.
3.Install 15 Amp fuse in control panel on generator.
4.Set AUTO/OFF/MANUAL switch on generator to “AUTO” position.
The system will now be in automatic operation mode.
TESTING THE AUTOMATIC TRANSFER SWITCH
Turn the circuit breaker feeding the transfer switch, to the “Off” position.The automatic sequence will follow.To go back to utility power, turn the circuit breaker to the “On” position.
Automatic Sequence
Utility Fail
Utility voltage sensor senses when utility voltage is below 70 percent of nominal. Engine start sequence is initiated after 6 second time delay.
Engine Warm-Up
Time delay to allow for engine
Transfer
Transfers from utility to standby supply occurs after standby voltage is above set levels. Minimum engine run time is 4 minutes after transfer.
Utility Pickup
Voltage pickup level is 80 percent of nominal voltage.
Retransfer
Retransfer from standby to utility supply 10 seconds after utility voltage supply is above pickup level.
Engine Cool Down
Engine will run for 60 seconds after retransfer.
Specifications
UL® 1008 Listed Transfer Switch
Model 01917
Enclosure . . . . . . . . . . . . . . . . . . . NEMA 1
Maximum Load/Circuit:
from Load Center . . . . . . . . . . 50 Amps Rated AC Voltage. . . . . . . . . . . . . 250 Volts Poles . . . . . . . . . . . . . . . . . . . . . . 2 Frequency . . . . . . . . . . . . . . . . . . 50/60 Hz
Fault Current Rating . . . . . . . . . . 5,000 RMS Symmetrical Amperes
Weight . . . . . . . . . . . . . . . . . . . . . 27 lbs.
Model 01918
Enclosure . . . . . . . . . . . . . . . . . . . NEMA 3R
Maximum Load/Circuit:
from Load Center . . . . . . . . . . 50 Amps Rated AC Voltage. . . . . . . . . . . . . 250 Volts Poles . . . . . . . . . . . . . . . . . . . . . . 2 Frequency . . . . . . . . . . . . . . . . . . 50/60 Hz
Fault Current Rating . . . . . . . . . . 5,000 RMS Symmetrical Amperes
Weight . . . . . . . . . . . . . . . . . . . . . 34 lbs.
When Calling the Factory
Before contacting Briggs and Stratton Power Products regarding service or repair of this transfer switch, obtain the Model Number and Serial Number from the unit data decal located on or inside the case.
To contact Briggs and Stratton Power Products call
9