Case Study
Case Study # 139 | Inverter Shutdown
Nationwide Power™ is the leading provider in the critical power supply industry. Our core business is the sales and service of uninterruptible power supplies and UPS batteries, along with supporting other critical power components such as emergency generators, switch gear, and HVAC. We publish critical power related case studies, highlighting best practices and quality standards.
In this case study, we highlight a contracted customer with a 20-year old Powerware Plus UPS that experienced an inverter shutdown issue. The customer called into our Tech Support Center for immediate phone support with a Critical Power Professional™, which is an exclusive, no-cost benefit for our contracted customers.
| Product | Powerware Plus 24kVA |
| Application | Spirits Distributor |
| Synopsis | Customer called Nationwide Power for their 20-year old Powerware Plus UPS unit after experiencing a power outage. Their generator is currently under repair, and so the load did not switch to the generator during the outage. After the outage, the UPS unit went down and was in alarm. Alarm shown: Inverter Shut Down. |
| Preliminary Actions |
Through established troubleshooting protocol, the Critical Power Professional™ (CPP™) was able to assist the customer in bringing the Powerware Plus UPS unit back online within just 10 minutes. Nationwide Power CPP’s are equipped with troubleshooting protocol for all major makes and models of UPS systems, including those that are deemed obsolete by the OEM. |
| Resolution | Once the batteries had an opportunity to recharge, the UPS system was fully operational with the load attached and protected. |
| Root Cause | After the power outage, and due to the generator being inoperable, the UPS unit depleted its batteries to end voltage. Because this Powerware Plus UPS unit has been properly serviced over the past 20 years, the system continues to operate as designed. |
| Additional Reading | Case Study #138: Powerware 9315 Repair (End-of-Life) |
Nationwide Power provides 24/7/365 technical support to ensure that everything operates and transitions successfully before, during, and after any power outage.
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