PRODUCT SUPPORT PROGRAM FOR REMOVING THE INPUT NEUTRAL CABLE AND NEUTRAL-TO-GROUND BOND OF THE INPUT/BYPASS AUTO-TRANSFORMER ON CERTAIN UPSB130 UNINTERRUPTIBLE POWER SUPPLY UPS BATTERIES
Usage:
REBE9657-00
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09Apr2013 |
B360
D430
E255
G053
H380
N020
N140
Z75E
D430
E255
G053
H380
N020
N140
Z75E
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Before/After (Limited distribution) | PRODUCT SUPPORT PROGRAM FOR REMOVING THE INPUT NEUTRAL CABLE AND NEUTRAL-TO-GROUND BOND OF THE INPUT/BYPASS AUTO-TRANSFORMER ON CERTAIN UPSB130 UNINTERRUPTIBLE POWER SUPPLY UPS BATTERIES |
|
1408 4480 | PS43882 |
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NOTE: | This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43882" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code. |
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NOTE: | The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst. |
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TERMINATION DATE |
30Apr2015 |
PROBLEM
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The existing input neutral and neutral-to-ground bond can cause a current loop on certain UPSB130 Uninterruptible Power Supply UPS Batteries. If the existing input neutral and neutral-to-ground bond has not been removed at installation by the electrical contractor, it must be done immediately to avoid a current loop situation and incorrect operation of the UPS. |
AFFECTED PRODUCT
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Model | Identification Number |
UPSB130 | XTC00105, 107, 112, 114, 117, 120-122, 127-130, 132 |
PARTS NEEDED
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No parts needed for this program |
ACTION REQUIRED
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1. Verify the service coordinator has scheduled a "planned power outage" with the customer to address this issue. 2. When onsite, obtain the customer's permission to remove the input power from the input/bypass auto-transformer. 3. Safely remove input power from the input/bypass auto-transformer using the standard shutdown procedure. Apply the proper "lock out tag out" and check for the absence of voltage! 4. Inspect the input/bypass auto-transformer for any abnormalities. 5. Remove the cable connection the neutral lug to the XOHO lug. 6. Remove the bond connecting the neutral lug to the ground lug. 7. Restore power to the input/bypass auto-transformer using the standard start-up procedure. 8. Measure the input/bypass auto-transformer's output for correct phase-to-ground voltages. 9. Measure the input/bypass auto-transfomer's output for correct phase-to-phase voltages. |
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Image1 |
Image2 |
SERVICE CLAIM ALLOWANCES
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0-12 mo |
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NOTE: This is a 2.0-hour job | ||||||
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PARTS DISPOSITION
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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |
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