Product

UPS battery install (HRL12280WFR) for Mitsubishi UPS 2033D 30kVA

Application

Manufacturing Data Center

Synopsis

New client hired Nationwide Power to inspect and maintain their Mitsubishi UPS 2033D-30kVA, which provides critical power for an existing data center.

Preliminary Actions

Upon inspection, our Critical Power Professional (CCP™) found a battery cable inside the battery cabinet, where the cable’s lug eyelet had melted due to improper torquing /fastening to the battery insert by the previous service company.

If left in its current condition, the cable could have melted during an outage causing a domino-effect including breaking the string’s integrity, dumping the load, and possible risk of fire.  It could have also caused a ground fault which would have not only dumped the load, but also damaged the UPS. 

Resolution

Our CCP™ team is equipped with some basic universal repair parts, and in this case a spare battery cable saved the day and was promptly replaced.  By being prepared, our CCP™ left the battery string in a condition that no longer presented a safety threat and left the UPS in proper working condition. 

Ongoing and regular UPS battery inspections are recommended by a qualified Critical Power Professional™.

Root Cause

The damaged battery cable appears to be the result of negligence from the previous service provider.  This should have been identified and repaired in previous inspections and is a basic element of any quality maintenance inspection.

Additional Reading

UPS Battery Preventive Maintenance and Service

UPS Battery Case Study with Poor Maintenance

UPS Batteries with No Preventive Maintenance