Case Study

Case Study #111 | Load Loss Prevented Maintenance

Aug 13, 2016 | Case Study

Product Liebert NPower 130 kVA
Application Hospital Data Operations and Phone Center
Synopsis Load loss prevented during a complete power capacitor and fan replacement.
Preliminary Actions The critical load in this case was transferred to the existing maintenance bypass circuit, allowing full hospital operations to continue while the UPS work was being performed. As part of the UPS isolation, the customer’s UPS feed circuit breaker had to be opened to isolate power to the UPS. Power would continue to flow on the Maintenance Bypass feed circuit breaker.
Resolution The Liebert NPower UPS requires that all input and output power sources be isolated from the UPS during a complete capacitor replacement. This means that either the critical load be shut down or placed on an external maintenance bypass circuit if one is available.

The customer was not familiar with the operation of this circuit breaker panel and relied upon the Nationwide Power Field Engineers to operate the circuit breaker.

The circuit breaker panel has two circuit breakers. One is the UPS power feed, and the other is the Maintenance Bypass Power feed.

Since the Nationwide Power Field Engineers were aware of the damages a critical load loss would incur on the hospital, and having not personally operated the customer’s circuit breakers, they decided to perfom additional precautionary steps. They removed the covers on the feeder circuit breakers, which allowed them to access the cables feeding the UPS and Maintenance Bypass circuit.

Using a hand held Amp Meter, they found that even though the critical load had been transferred to the Maintenance Bypass circuit, the UPS circuit breakers were still carrying the load current and the Maintenance Bypass circuit breaker showed no current. Additional investigation was performed, which entailed tracing conduit runs above the drop ceiling.

The customer was informed that the circuit breaker panel had been mislabeled. The capacitor and fan replacements were completed without incident, and the UPS was placed back into normal operation to support the hospital equipment.

Root Cause It was verified that the two circuit breakers in the customer’s panel were marked in reverse.

Had the Field Engineers simply followed normal procedures and opened the circuit breaker marked UPS Feed, the hospital computer systems and phone system would have lost power creating a situation that could have cost lives.

Nationwide Power provides 24/7/365 technical support to ensure that everything operates and transitions successfully before, during, and after any power outage.

Request a quote Call | 800-868-2780 E-Mail

We are your critical power infrastructure partner!

Latest News

NATIONWIDE POWER NAMES EATON’S 93PM THE MOST VERSATILE UPS OF 2019

NATIONWIDE POWER NAMES EATON’S 93PM THE MOST VERSATILE UPS OF 2019

News Article With hundreds of UPS equipment options on the market, ranging from manufacturer, model, kVA size and more, Nationwide Power names Eaton’s 93PM the most versatile UPS of 2019. “At Nationwide Power, we sell millions of dollars' worth of equipment each year,...

The Nationwide Power Annual Critical Power Sales Summit

The Nationwide Power Annual Critical Power Sales Summit

News Article In mid-February, our team at Nationwide Power hosted the 2019 Power Summit. We flew in team members, vendors, and OEM partners from across the country to talk critical power infrastructure. The week-long Power Summit included topics like 2018 performance,...

Nationwide Power Achieves Another Year With Zero Safety Incidents

Nationwide Power Achieves Another Year With Zero Safety Incidents

News Article At Nationwide Power, we pride ourselves on putting safety and quality at the top of our priority list, and it’s with great pride that we can announce another year in the books with zero safety incidents. Congratulations to our quarterly safety drawing...

Newsletter Signup

Sign up below to stay informed with latest industry trends, products, and news.



0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Solutions

Feedback

March 21, 2019

"Would definitely recommend Nationwide Power as well as Joseph, our Field Engineer. Always great, professional service from Joseph."

View All - Rob W
Kansas

Newsletter

Sign up below to stay informed with latest industry trends, products, and news.



Pin It on Pinterest