Eaton ATC-900 Operation And Maintenance Manual - page 26
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IB140064EN
Instructional Booklet
Page 26
Effective: April 2018
Operation and Maintenance Manual, Automatic Transfer Switch, Bypass Isolation,
Contactor Type, Open/Closed Transition, ATC-900 Controller, 3000A Frame
7.3.1 Mechanical and/or Electrical Testing
Before energizing the ATS equipment, insure that all safety pre-
cautions are taken and that all WARNINGS and CAUTIONS are
observed.
7.3.2 No Voltage Steps
With no voltage available on either power source, proceed as fol-
lows.
Step 1: The generator engine start controls should be in the OFF
position to prevent an undesired start.
Step 2: Ensure that the ATC-900 and PT transformer (Figure 22)
have been set to the proper applied system voltage.
Step 3: Check all ATS loads to ensure that they are ready to be
energized.
Step 4: Assure engine start contacts have been connected, see
Section 4.5.1 (TBJ15).
7.3.3 Operational Checks
Step 1: Check to ensure that Source 1 switching device is in the
CLOSED position.
Step 2: Initiate an automatic transfer operation from the Source 1
to the Source 2 power source by pressing the
Test> pushbutton. The initial password for the is 0900.
Use the up-down, left-right to set this password for run-
ning an engine test and don't forget to push the "Enter"
button after the password is entered.
Note: The Logic Controller provides the capability to set the Engine Test
function to:
0. No Load Engine Test;
1. Load Engine Test; or
2. Disabled.
The factory default is set to:
1. Load Engine Test
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 Source 2 power
source after the Time Delay Normal to Emergency (TDNE)
times out.
Step 3: Initiate, if desired, an automatic transfer operation back to
the Source 1 power source by pressing the
Test> pushbutton one time. The factory default setpoint
for the engine run in engine test is 30 minutes.
1. After the Time Delay Emergency to Normal timer
(TDEN) has timed out, the transfer switch will transfer
back to the Source 1 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 Source 1 power source is completed.
7.3.4 Alternate Tests
1. Alternate operational tests may be possible depending upon
the options provided with any given ATS. Refer to the draw-
ings provided with the ATS equipment, along with the specifi-
cation nameplate, to determine the exact options provided.
7.4 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. Remember, 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 informa-
tion required to properly address the need:
1. Style number (GO 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 represent-
ing 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
SINCE TIME DELAY ENGINE COOL-OFF IS A STANDARD FEATURE,
AN ENGINE START SIGNAL WILL BE PRESENT FOR A PERIOD OF
TIME WHEN THE SWITCH IS FIRST ENERGIZED. THE PERIOD OF
TIME IS EQUAL TO THE TIMER SETTING. TO AVOID STARTING
THE ENGINE DURING THIS TIME PERIOD, TURN THE GENERATOR
CONTROLS TO THE OFF POSITION.
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
ONLY PROPERLY TRAINED PERSONNEL, FAMILIAR WITH THE ATS
EQUIPMENT AND ITS ASSOCIATED EQUIPMENT, SHOULD BE PER-
MITTED TO PERFORM THE TROUBLE SHOOTING FUNCTION. IF AN
INDIVIDUAL IS NOT QUALIFIED TO PERFORM THE TROUBLE
SHOOTING, THE INDIVIDUAL SHOULD NOT ATTEMPT ANY OF
THESE PROCEDURES. NEVER ATTEMPT TO SERVICE OR PERFORM
MAINTENANCE ON EQUIPMENT WHILE ENERGIZED. USE THE MIS
SWITCH. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT ON
EQUIPMENT BEFORE SERVICING OR INSPECTING. WHILE ENER-
GIZED, AN ARC FLASH AND SHOCK HAZARD EXISTS. CONSULT
NFPA 70E AND OSHA GUIDELINES FOR OPERATOR SAFETY PRIOR
TO SERVICING, INSPECTING OR OPERATING EQUIPMENT.
Eaton Care for assistance
877-386-2273 option 2, option 4, and then option 3