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How to do a Functional Test after installing the Series 300 automatic transfer switch (D, J, and H Frame).
After installing the Series 300 automatic transfer switch (ATS) perform the following three-part functional test.
1 - MANUAL OPERATION
1. Turn OFF both the utility and generator circuit breakers feeding the ATS. Verify that ALL POWER IS OFF!
2. For 30A - 230A - Grasp the maintenance handle and turn it quickly with your thumb and fingers to operate the transfer switch manually.
For 150A - 1200A - Insert the maintenance handle into the hole in the shaft, left side of the operator. Move the handle as shown to manually operate the transfer switch.
3. The switch should operate smoothly without binding. If it does not, check for shipping damage or construction debris.
4. After checking the manual operation, use the handle again to return the transfer switch to the utility source position.
100-230A
1. Verify that the generator battery is connected and that the generator’s starting controls are set for automatic.
2. Turn on both the utility and generator circuit breakers.
3. Verify that the Normal Source Accepted and Load on Normal lights are on.
4. This step will start the generator: Press and hold the Transfer Test button until the Emergency Source Accepted light comes on and stays on. Then release the button.
5. After the Generator Acceptable light comes on, the ATS will transfer the load from the utility to the generator (default 0 sec. but can be modified). The Load on Emergency light comes on.
7. The ATS stays connected to the generator for 30 seconds (approx. but can be modified). For 3ADTS or 3NDTS, the ATS stays connected to the generator for 33 seconds (approx. but can be modified). Then the load is transferred back to the utility. To bypass time delay, press the Transfer Test button.
8. After the load retransfers to utility, the generator runs for 5 minutes (engine cool down) and then shuts down. The Emergency Source Accepted light goes off indicating that the generator is off.
This completes the Functional Test.
For more information about the 300 Series ATS, you may visit the link below.
https://asco-power.cld.bz/ASCO-Power-Technologies-Products-Digital-Binder/139/
1 - MANUAL OPERATION
- A handle is provided on the transfer switch for maintenance purposes only. The manual operation of the transfer switch should be checked before it is energized.
1. Turn OFF both the utility and generator circuit breakers feeding the ATS. Verify that ALL POWER IS OFF!
2. For 30A - 230A - Grasp the maintenance handle and turn it quickly with your thumb and fingers to operate the transfer switch manually.
For 150A - 1200A - Insert the maintenance handle into the hole in the shaft, left side of the operator. Move the handle as shown to manually operate the transfer switch.
3. The switch should operate smoothly without binding. If it does not, check for shipping damage or construction debris.
4. After checking the manual operation, use the handle again to return the transfer switch to the utility source position.
100-230A
150-600A
NOTICE: 150 - 600A - Remove the maintenance handle before proceeding!
800A - 1200A
NOTICE: 800 - 1200A - Remove the maintenance handle before proceeding!
2 - VOLTAGE CHECKS
- The ATS can be rated for 115V–600V AC 60 or 50 Hz. Verify that both the utility and generator sources are 115V–600V AC 60 or 50 Hz.
- This procedure checks the electrical operation of the ATS. Please be sure the door to the transfer switch is closed before proceeding.
1. Verify that the generator battery is connected and that the generator’s starting controls are set for automatic.
2. Turn on both the utility and generator circuit breakers.
3. Verify that the Normal Source Accepted and Load on Normal lights are on.
4. This step will start the generator: Press and hold the Transfer Test button until the Emergency Source Accepted light comes on and stays on. Then release the button.
5. After the Generator Acceptable light comes on, the ATS will transfer the load from the utility to the generator (default 0 sec. but can be modified). The Load on Emergency light comes on.
7. The ATS stays connected to the generator for 30 seconds (approx. but can be modified). For 3ADTS or 3NDTS, the ATS stays connected to the generator for 33 seconds (approx. but can be modified). Then the load is transferred back to the utility. To bypass time delay, press the Transfer Test button.
8. After the load retransfers to utility, the generator runs for 5 minutes (engine cool down) and then shuts down. The Emergency Source Accepted light goes off indicating that the generator is off.
This completes the Functional Test.
For more information about the 300 Series ATS, you may visit the link below.
https://asco-power.cld.bz/ASCO-Power-Technologies-Products-Digital-Binder/139/
Published for:ASCO Power Technologies USA
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