Sensor And Timer Adjustments - Sensing Circuit Board - Generac Power Systems GTS "W" Owner's Manual

Figure 3.11 — Manual 3-Position Switch
3.15.7 NEMA 12 ENCLOSURE
National Electrical Manufacturer's Association (NEMA)
12 enclosure. This type of enclosure is intended for use
indoors to provide a degree of protection against dust,
falling dirt, and dripping, non-corrosive liquids. Ask
your Dealer/Distributor or consult the factory for
details.
3.15.8 NEMA 3R ENCLOSURE
National Electrical manufacturer's Association (NEMA)
3R enclosure. This type of enclosure is intended for use
outdoors to protect enclosed parts from windblown
dust and water. The enclosure is sealed for dust, rain or
sleet and is ice resistant. Ask your Dealer/Distributor or
consult the factory for details.
3.15.9 NEMA 4 ENCLOSURE
National Electrical Manufacturer's Association (NEMA)
4 enclosure. This type of enclosure is intended for use
indoors or outdoors to provide a degree of protection
against windblown dust and rain, splashing water, and
hose-directed water: undamaged by the formation of ice
on the enclosure. Ask your Dealer/Distributor or con-
sult the factory for details.
3.15.10 NEMA 4X ENCLOSURE
National Electrical Manufacturer's Association (NEMA)
4X enclosure. This type of enclosure is intended for use
indoors and outdoors to provide a degree of protection
against corrosion, windblown dust and rain, splashing
water, and hose-directed water: undamaged by the for-
mation of ice on the enclosure. Ask your Dealer/
Distributor or consult the factory for details.
3.15.11 ADDITIONAL OPTIONS
For information on additional options not covered in
this manual, ask your Dealer/Distributor or consult the
factory.
Section 3 — Operation
Generac GTS "W" Type Transfer Switch
3.16 SENSOR AND TIMER ADJUSTMENTS
— SENSING CIRCUIT BOARD
3.16.1 VOLTAGE DROPOUT SENSOR
This sensor (Figure 3.12) establishes the NORMAL
power source voltage which generator startup and
transfer to STANDBY (Emergency) power source
occurs. Adjust the sensor to any voltage between 75-
95% of the nominal voltage Pickup Sensor setting, by
turning the adjusting knob to the desired setting (in per-
cent). Sensor is factory set to about 90% of the Voltage
Pickup Sensor setting.
3.16.2 VOLTAGE PICKUP SENSOR
Establishes the NORMAL power source voltage at which
re-transfer back to that power source occurs. Turn
knob to adjust setting to 85-95% of the nominal NOR-
MAL source supply voltage. Sensor has been factory set
to about 90% of nominal rated NORMAL source voltage.
3.16.3 LINE INTERRUPT DELAY TIMER
Established a definite time interval between NORMAL
source voltage dropout below the setting of the Voltage
Dropout Sensor and generator startup. This time inter-
val is necessary to prevent false generator starts that
voltage transients might otherwise cause. Adjust timer
from 0.1 to 10 seconds; is factory set to about five sec-
onds.
Figure 3.12 — Sensing Circuit Board Panel
Generac ® Power Systems, Inc. 15