IB01602017E
For more information visit: www.eaton.com
Instructional Booklet
Effective: July 2010
Page
17
ATC-100 Contactor Based Transfer Switch
Step 4:
Close any generator engine-start controls opened as a
result of actions taken in Step 1, Section 6.1.2.
Step 5:
Where required, use an accurate voltmeter to check
phase-to-phase and phase-to-neutral voltages present at
the transfer switch Utility, Generator, and/or load termi-
nals.
6.1.4 Operational Checks
Step 1:
Check to ensure that the Utility switching device is in the
CLOSED position. This should have been done in Section
6.1.3, Step 1.
Step 2:
Initiate an automatic transfer operation from the Utility to
the Generator power source by pressing the
<System
Test>
pushbuttons (Engine test and set generator test)
two times.
a.
After the Time Delay Engine Starting (TDES) has timed out,
the engine should start, run, and build up to normal voltage
and frequency.
b.
The transfer switch will transfer to the Generator power
source after the Time Delay Normal to Emergency (TDNE)
times out.
Step 3:
Initiate an automatic transfer operation back to the Utility
power source by pressing the
<System Test>
pushbut-
tons (Engine Test and Set Generator Test) one time.
1. After the Time Delay Emergency to Normal timer (TDEN)
has timed out, the transfer switch will transfer back to
the Utility power source.
2. The Time Delay for Engine Cool-Off (TDEC) will allow
the engine to run unloaded for a preset time after trans-
fer to the Utility power source is completed.
6.1.5 Alternate Tests
1. Alternate operational tests may be possible depending upon
the options provided with any given ATS. Refer to the sche-
matic diagram provided with the ATS equipment, along with
the specification nameplate, to determine the exact options
provided.
6.2 Problem Solving
A basic problem-solving effort is the first step to take prior to call-
ing for assistance. Frequently, the effort will successfully address
most problems encountered. The problem solving procedure is
presented in the Troubleshooting Guide (Table 3, Section 5 of
ATC-100 Controller Instruction Booklet IB01602019E). Remem-
ber, only qualified individuals familiar with the ATS equipment and
the system in which it is applied should attempt these problem
solving procedures.
If a problem persists after having completed the problem solving
procedure, contact a Eaton representative for further assistance.
When calling for assistance, the following is the minimum infor-
mation required to properly address the need:
1. Style number of ATS, if applicable;
2. Catalog number of ATS;
3. Actual location of the ATS (type of facility, address, etc.);
4. Company name and name and position of individual repre-
senting company;
5. Basic description of the situation as it exists; and
6. Any results of the problem solving steps taken and/or read-
ings taken.
NOTICE
AT THIS POINT, AND PRIOR TO MAKING ANY ATTEMPT TO ENER-
GIZE THE ATS EQUIPMENT, THE ENGINE-DRIVEN GENERATOR
SHOULD BE OPERATED. IF NECESSARY, THE VOLTAGE REGULA-
TOR ON THE GENERATOR SHOULD BE ADJUSTED ACCORDING TO
THE MANUFACTURER’S RECOMMENDATIONS. THE ATS EQUIP-
MENT WILL RESPOND ONLY TO THE RATED VOLTAGE AND FRE-
QUENCY PROGRAMMED INTO THE CONTROLLER.
WARNING
DO NOT ATTEMPT TO MANUALLY OPERATE THE ATS WITH THE
UTILITY POWER SOURCE CONNECTED AND AVAILABLE.
DO NOT ATTEMPT TO MANUALLY OPERATE THE ATS WITH THE
GENERATOR POWER SOURCE CONNECTED AND AVAILABLE.
WARNING
HAZARDOUS VOLTAGES IN AND AROUND ATS EQUIPMENT DUR-
ING THE PROBLEM SOLVING PROCESS CAN CAUSE SEVERE PER-
SONAL INJURY AND/OR DEATH. AVOID CONTACT WITH ANY
VOLTAGE SOURCE WHILE PROBLEM SOLVING.
WARNING
ONLY PROPERLY TRAINED PERSONNEL, FAMILIAR WITH THE ATS
EQUIPMENT AND ITS ASSOCIATED EQUIPMENT, SHOULD BE PER-
MITTED TO PERFORM THE PROBLEM SOLVING FUNCTION. IF AN
INDIVIDUAL IS NOT QUALIFIED TO PERFORM THE PROBLEM SOLV-
ING FUNCTION, THE INDIVIDUAL SHOULD NOT ATTEMPT ANY OF
THESE PROCEDURES.
