10
Instruction Booklet
IB0162063EN
Effective January 2014
O & M Manual for the EGS Metered, Service
Entrance Automatic Transfer Switch with Relay Control
Eaton Corporation www.eatoncanada.ca
4.9 Protection
For Catalogue #EgSC100aMSE and EgSC200aMSE
This switch is equipped with integral over-current protection.
Continuous load current not to exceed 80 percent of switch rating.
This Transfer Switch is rated for use on a circuit capable of deliver-
ing not more than 10,000 rms symmetrical amperes, 240 volts maxi-
mum.
Section 5: Functional Testing
Warning
YOU arE rEaDY TO EnErgiZE THE EQUiPMEnT. VOLTagES WiTHin THE
EnCLOSUrE arE CaPaBLE OF CaUSing SEVErE PErSOnaL inJUrY Or
DEaTH. USE EXTrEME CaUTiOn TO aVOiD COnTaCT WiTH EnErgiZED
EQUiPMEnT.
5.1 Preliminary Checks
S
tep 1: Check all loads connected to the ATS to ensure that they are ready
to be energized.
5.2 Energize the Switch
Step 1: With the service entrance barrier removed use a voltmeter to mea-
sure the line-to-line and the line-to-neutral voltages on the line
side of the circuit breaker. Confirm the utility voltage is correct then
replace the service entrance barrier.
Step 2: Ensure the generator control selector switch located on the standby
generator is set to the OFF position. If so equiped, remove the control
fuse from the generator control panel to ensure the generator does
not iniate a start during this phase of the preliminary check. Open
the generator power source circuit breaker located on the generator
assembly.
Step 3: Close the service entrance disconnect circuit breaker in the switch to
connect the ATS to the utility power source voltage. If the ATS unit
is not already in the UTILITY position, and the voltage is acceptable,
the solenoid will engage and the contactor will automatically switch
to the UTILITY position.
Warning
COnTaCT WiTH EnErgiZED COMPOnEnTS WiLL CaUSE ELECTriCaL
SHOCK CaPaBLE OF PrODUCing SEVErE PErSOnaL inJUrY Or
DEaTH. USE EXTrEME CaUTiOn TO aVOiD COnTaCT WiTH EnErgiZED
COMPOnEnTS WHEn USing a METEr FOr VOLTagE CHECKS.
Step 4: Replace the control fuse in the generator control panel removed in
Step 2 of Section 5.2. Position the generator control selector switch,
located on the standby generator, to the AUTOSTART position. (It
may also be labeled REMOTE START or AUTO.). Close the generator
power source circuit breaker opened in Step 2 of Section 5.2.
5.3 Operational Checks
Step 1: Open the service entrance disconnect circuit breaker originally closed in
Step 3 of Section 5.2.
nOTiCE
THiS WiLL SiMULaTE an inTErrUPTiOn OF THE UTiLiTY POWEr SOUrCE.
Step 2: After a time delay (based on the generator settings), the standby gen-
erator engine will start.
Step 3: Using a voltmeter, measure the line-to-line and line-to-neutral voltages
across the generator line terminals to ensure that the generator
emergency voltage is correct. If necessary, make adjustments to the
voltage regulator on the generator according to the manufacturer’s
recommendations to correct any voltage deviations. The ATS will
only respond to the correct voltage from the generator power source.
Step 4: The ATS Time Delay Normal (Utility) to Emergency (Generator) (TDNE)
will begin to time after the generator engine begins to run. After
time out, the solenoid will engage and the contactor will automati-
cally switch from the UTILITY to the GENERATOR position.
Step 5: Close the service entrance disconnect circuit breaker described in Step
3 of Section 5.2.
Step 7: The ATS Time Delay Emergency (Generator) to Normal (Utility) (TDEN)
timer will begin timing, and the solenoid will engage and automati-
cally switch from the GENERATOR to the UTILITY position and the
generator will shut down after a cool down period.
