Case Study #123 | Crisis averted: UPS battery install Mitsubishi UPS 2033D 30kVA

Case Study #123 | Crisis averted: UPS battery install Mitsubishi UPS 2033D 30kVA

Case Study

Product 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 (CPP™) 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 CPP™ 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 CPP™ 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

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!

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November 30, 2018

"Tobias was very professional. I felt comfortable leaving him unattended in our server room while he did the Preventive Maintenance."

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Case Study #118 | Symmetra PX Good and Bad Batteries

Case Study #118 | Symmetra PX Good and Bad Batteries

Case Study

Product APC Symmetra PX
Application Datacenter
Synopsis Client found the alarms / condition of unit as: UPS in bypass.
Preliminary Actions Upon arrival, found UPS in Bypass Mode.
Resolution Recommending replacement of all batteries in order to provide proper ride-through on battery during transfer from Utility to Generator power.
Root Cause The mixing and matching of old batteries with new batteries, leaving weak batteries within the system, degrading both the system’s ability for proper transfer from one source to another, and the performance of the newer batteries.
Varying resistance values between ‘good’ batteries and ‘bad’ batteries are detrimental to the overall performance of the UPS’ battery strings(s). Due to this inherent charging and discharging change in characteristics, as batteries near their end of life (typically 4-5 years for an average VRLA battery), it is always preferred to replace batteries by entire strings at a time as opposed to as they fail one at a time.
More so, if only replacing batteries as they fail, more often than not this will not be made apparent until the batteries are called upon…resulting in possible loss of load during needed transfers and/or outage support.

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

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News Article Lead-acid and lithium batteries have many uses in all parts of the world. Lead-acid or lithium batteries are the backbone to any uninterruptible power supply system, and a lot goes into their proper recycling and disposal. The combination of sulfuric acid...

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November 30, 2018

"Tobias was very professional. I felt comfortable leaving him unattended in our server room while he did the Preventive Maintenance."

View All - Andy L
Washington

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Case Study #108 | “Maintenance-Free” Batteries

Case Study #108 | “Maintenance-Free” Batteries

Case Study

Product “Maintenance-Free” VRLA Batteries
Application Business Electrical Room
Synopsis Customer had called for a trouble-shoot and possible shut-down of the UPS
Preliminary Actions The Nationwide Power engineer was on-site to trouble-shoot a UPS unit that was in alarm, and to remove leaking/cracked batteries.
Resolution The UPS was being used to power emergency lighting for 3 buildings and had been running in alarm with batteries shorting to ground for a long time. Upon arrival, the engineer found the UPS with an active rectifier alarm and concluded that the UPS needed new AC and DC capacitors, new fans, and a full battery replacement. The DC link would not return to nominal voltage with batteries being disconnected and the logic was showing other rectifier alarms, signifying potential rectifier issues or logic problems. There were also multiple battery contactor alarms active. The UPS was put into internal maintenance bypass with logic turned off until it can be replaced or repaired. The system may need to be completely replaced.
Root Cause “Maintenance-Free” does not mean that the whole Uninterruptible Power Supply does not need to be maintained. To have maintenance-free batteries simply means that you do not have to add water (as with flooded cell batteries). Some might contend that you do not have to re-torque connections either, however most VRLA battery manufacturer maintenance instructions state they should be re-torqued annually. Regular inspections where voltages and ohmic readings are taken would have electrically identified the battery as trending bad prior to the battery visually indicating the swelling, cracking, and leakage.

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

A Holiday Tradition

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News Article As a part of our holiday tradition, the corporate team at Nationwide Power came together to celebrate another successful year. Each year, Nationwide Power selects a local business to support, and this year’s location was at the family-owned Italian...

The Inaugural Nationwide Power Chili Cook-Off

The Inaugural Nationwide Power Chili Cook-Off

News Article Nothing says fall like a company chili-cookoff!  Chili, cornbread, pellet smoked bacon-wrapped dogs, and all the right toppings.   We were really hoping to see the Wienermobile show up…  maybe next year. The judges had a pretty challenging task ahead of...

Recycling and Proper Disposing of UPS Batteries – Doing Our Part

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News Article Lead-acid and lithium batteries have many uses in all parts of the world. Lead-acid or lithium batteries are the backbone to any uninterruptible power supply system, and a lot goes into their proper recycling and disposal. The combination of sulfuric acid...

Newsletter Signup

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



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Feedback

November 30, 2018

"Tobias was very professional. I felt comfortable leaving him unattended in our server room while he did the Preventive Maintenance."

View All - Andy L
Washington

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Case Study #106 | Thermal Runaway

Case Study #106 | Thermal Runaway

Case Study

Product VRLA Batteries
Application Medical Facility Data Center
Synopsis Some maintenance-free, rechargeable sealed Valve Regulated Lead Acid (VRLA) UPS batteries can experience Thermal Runaway conditions. Higher ambient temperatures, high charge/re-charge current, age, overuse, shorted (bad) internal cells, loose connections and poor design can be factors. Thermal condition of a battery is also dependent on its environment. If the battery’s temperature is higher than the ambient temperature, it will normally lose heat through conduction, convection and radiation. However, if the ambient temperature is higher, the battery will gain heat from its surroundings causing the thermal management system to work harder to keep the resulting heat under control. A single cell may work very well at room temperature on its own, but when it is surrounded by other batteries or modules generating heat, this will cause the temperature to rise, which will lead to thermal runaway and possible a very destructive situation:
Resolution Replace the batteries and have regular preventive maintenance performed by a reputable UPS maintenance company.
Root Cause This was an older UPS that did not have regular preventive maintenance performed. Proper cooling, airflow, and maintenance will reduce exposure of thermal runaway conditions.

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

A Holiday Tradition

A Holiday Tradition

News Article As a part of our holiday tradition, the corporate team at Nationwide Power came together to celebrate another successful year. Each year, Nationwide Power selects a local business to support, and this year’s location was at the family-owned Italian...

The Inaugural Nationwide Power Chili Cook-Off

The Inaugural Nationwide Power Chili Cook-Off

News Article Nothing says fall like a company chili-cookoff!  Chili, cornbread, pellet smoked bacon-wrapped dogs, and all the right toppings.   We were really hoping to see the Wienermobile show up…  maybe next year. The judges had a pretty challenging task ahead of...

Recycling and Proper Disposing of UPS Batteries – Doing Our Part

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News Article Lead-acid and lithium batteries have many uses in all parts of the world. Lead-acid or lithium batteries are the backbone to any uninterruptible power supply system, and a lot goes into their proper recycling and disposal. The combination of sulfuric acid...

Newsletter Signup

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



Solutions

Feedback

November 30, 2018

"Tobias was very professional. I felt comfortable leaving him unattended in our server room while he did the Preventive Maintenance."

View All - Andy L
Washington

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