APC 990 manual Operation Modes, Normal operation, Battery operation

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Operation

Operation Modes

Normal operation

During online operation, the critical load is supported by the inverters. While the UPS system is operating in this mode, a single-line diagram will appear on the screen. The green line indicates the power flow from the utility, through the UPS units, and then to the load.

External Bypass SSW

Delta Inverter

Main Inverter

Battery

Battery operation

During battery operation, the critical load is supported by the inverters. The main inverter is supplied by battery power, ensuring uninterrupted support to the load. While the UPS system is operating in battery operation, a single-line diagram will appear on the screen. The green line indicates the power flow from the batteries, through the main inverters, and then to the load.

External Bypass SSW

Delta Inverter

Main Inverter

Battery

Symmetra MW with External Bypass Static Switch Operation Manual - 990-1377D-001

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Contents Operation Page Content Configuration Navigation Tree OverviewScreen symbols Display Symbols and ButtonsNavigation symbols Breakers ButtonsUPS How to Access Summary Screens fromAccess Bypass Summary screens How to start a web-based remote session How to Access the APC Symmetra MW Remote DisplayNormal operation Battery operationOperation Operation ModesManual bypass operation Static bypass operationHow to start up the system from manual bypass operation Operation ProceduresHow to access screens protected by the user-password  Press the Operation button on the UPS Summary screen How to transfer from normal to static bypass operation  Press Initiate Transfer How to transfer from static bypass to normal operationHow to Configure the System ConfigurationHow to configure the Touch-Screen settings screen How to change the passwordHow to configure the Modbus Settings screen How to configure the Network Configuration screens How to configure the Regional Settings screenConfiguration How to Configure the System Configuration How to Configure the System How to configure the Display Settings How to configure the Battery Test Settings screen Inverter DC Capacitors screen MaintenancePredictive Maintenance Screens How to access Predictive Maintenance screensTop Fans screen Inverter AC Capacitors screenInverter Fans screen Main Static Switch Fans screenHow to Change the Air Filters Alarm levels TroubleshootingAlarm Types Alarm buttonHow to view the event log How to view active alarmsTroubleshooting Alarm Types 06/2008 APC Worldwide Customer Support990-1377D-001

990 specifications

The APC 990 is a high-performance uninterruptible power supply (UPS) designed to provide reliable power protection for critical equipment in various settings, including data centers, network closets, and industrial environments. Recognized for its exceptional efficiency and robust features, the APC 990 caters to the needs of its users by ensuring continuous power availability.

One of the standout characteristics of the APC 990 is its modular design, which facilitates easy scalability and maintenance. This UPS system allows users to adapt to growing power needs by adding or replacing modules without significant downtime. The modular approach also enhances redundancy, ensuring that even if one module fails, the system continues to function efficiently.

The APC 990 boasts an impressive power factor, often rated at 0.9 or higher, which indicates its ability to deliver more usable power while minimizing energy loss. This feature not only improves the efficiency of the UPS but also reduces the overall energy consumption, contributing to a more environmentally friendly operation. The system’s high efficiency translates into lower operational costs for businesses that rely on it for power backup.

Equipped with advanced technologies, the APC 990 features Intelligent Battery Management (IBM) to optimize battery performance and lifespan. This technology intelligently adjusts charging parameters based on the specific characteristics of the connected batteries, thereby prolonging their operational life and enhancing reliability.

Furthermore, the APC 990 includes a user-friendly interface that provides real-time monitoring and alerts through a graphical LCD display. This interface allows users to access crucial information such as power status, load levels, and battery health at a glance. The system can also be integrated with network management solutions for remote monitoring, ensuring that users are always informed about the status of their power supply.

The robust physical design of the APC 990 ensures durability and performance even under demanding conditions. Its compact form factor enables efficient use of space, while its advanced cooling technology prevents overheating, thus maintaining optimal performance.

In summary, the APC 990 stands out in the market for its combination of modular design, high efficiency, advanced battery management, and user-friendly interface. These features make it an ideal choice for businesses seeking reliable and scalable power protection solutions for their critical infrastructure.