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Powerware 9390 operation manual Bypass, Batteries

Models: 9390

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Understanding UPS Operation

An ABM charging cycle starts with the charger driving the battery voltage, at maximum current limit, to a battery charge level of 2.34 volts/cell. The time it takes for the voltage to reach to the battery charge level is saved as the battery charge time. If the battery charge time exceeds 100 hours, an alarm is annunciated.

As soon as a battery charge level of 2.34 volts/cell is reached, the battery is charged at a float level of 2.31 volts/cell for 48 hours (battery float time) plus 150% of battery charge time. Twenty-four hours into the float period, a series of battery tests are performed to check the battery health. The float level charge continues after a successful test.

At initial startup, the battery run time on the front panel display indicates two minutes. After the 24-hour float charging period and battery testing, the actual battery run time is determined and the actual battery run time is displayed.

After the float period is completed, the charger is disconnected and the batteries are allowed to rest for 672 hours (28 days) maximum rest time. If the battery voltage falls below the opportunity charge level of 2.1 volts/cell during the first 240 hours of the rest period, an alarm is annunciated.

An ABM charge cycle is initiated whenever one of these four conditions occurs since the last charge cycle:

￿The batteries have rested over the maximum rest time of 672 hours.

￿Accumulated discharge time is over a maximum battery discharge time of 20 seconds.

￿Battery voltage is under the opportunity charge level of 2.1 volts/cell and the unit has been in rest mode for longer than 240 hours.

￿An XCP command Initiate Battery Test is received.

7.4.4Bypass

The bypass has a continuous-duty fully-rated SCR switch in the bypass circuit and a contactor in the inverter leg. In Normal mode, the contactor connects the inverter to the output. A backfeed contactor is also provided.

7.4.5 Batteries

The UPS operates from battery strings from 192 cells (384V nominal) to 240 cells (480V nominal).

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Powerware® 9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C

Page 69 Page 71
Page 70
Image 70
Powerware 9390 operation manual Bypass, Batteries
Page 69 Page 71

9390 specifications

The Powerware 9390 is a high-performance uninterruptible power supply (UPS) designed for critical applications in data centers, telecommunications, and other industries requiring maximum uptime. This UPS system is renowned for its durability, efficiency, and advanced technological features, making it an ideal choice for environment-sensitive operations.

One of the standout characteristics of the Powerware 9390 is its modular architecture. This design allows for scalability, enabling businesses to tailor the power supply to fit their specific needs. Users can add or remove power modules as demand fluctuates, ensuring optimal performance without overspending on unnecessary capacity. The system is available in various power ratings, typically ranging from 40 kVA to 750 kVA.

Among the key technologies utilized in the Powerware 9390 is the Advanced Battery Management (ABM) system. This innovative feature helps extend battery life by monitoring and optimizing charging cycles. The ABM technology uses an intelligent three-stage charging process, significantly reducing battery wear while ensuring high availability of power during outages. This enhancement not only improves reliability but also lowers maintenance costs over time.

Energy efficiency is another hallmark of the Powerware 9390, as it incorporates double-conversion technology to maintain voltage stability. This ensures that sensitive electronic equipment is protected from surges and fluctuations in power supply. Additionally, the UPS offers high input power factor and low harmonic distortion, contributing to overall energy savings while minimizing the environmental impact.

The Powerware 9390 is equipped with advanced monitoring and management features that allow users to maintain complete control over their power infrastructure. An intuitive LCD display provides real-time metrics on system performance, battery status, and operational logs. Furthermore, the UPS can be integrated with network management systems, enabling remote monitoring and management via web interfaces.

In terms of safety characteristics, the Powerware 9390 adheres to rigorous industry standards, ensuring that it provides reliable performance under various operating conditions. Its robust construction and redundant components further enhance reliability, making it a popular choice in mission-critical environments.

In conclusion, the Powerware 9390 stands out as a leader in the UPS market, combining modular scalability, advanced battery management, energy efficiency, and robust safety features. Its ability to adapt to the needs of dynamic organizations while providing reliable power protection makes it an invaluable asset for any critical application. With its state-of-the-art technologies, businesses can depend on the Powerware 9390 for continuity, efficiency, and peace of mind.