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Capstone Turbine Corporation Model C65 Hybrid UPS User’s Manual This uncontrolled stop puts abnormal mechanical and thermal stresses on the system, and can reduce the turbine generator life. Therefore, E-Stop should only be used as a worst case emergency means to shut the system off. The E-Stop function is not available as a discrete relay input to the UPS Controller, but may be directly wired to a building management system for automatic operation in case of emergency, or may be wired to a manual “Emergency Stop” button. Refer to specific instructions provided by the building management system integrator or system installer for the location of any Emergency Stop button or instructions how to activate this function from the building management system. After an emergency stop, the power to the microturbine must be turned off for 30 seconds before a restart can be attempted. Emergency stops should NEVER be used for routine shutdowns. Also, after an E-Stop, you may want to manually close the external fuel isolation valves to shut off potential fuel flow into the microturbine in case there is a fuel leak. The external fuel isolation valve must be returned to the open position before a restart of the microturbine is attempted. An E-Stop operation should be viewed as an extremely abnormal event, and a thorough investigation as to why the E-Stop command was given should be conducted before returning the system to normal operation. 3.12. Operation During Fault Conditions The Hybrid UPS system is designed to ensure that power output is available for critical loads even when a utility source is unavailable, and even if the turbine generator itself cannot operate for some period of time. However, power output can potentially be disrupted by a fault condition. The UPS Controller continuously monitors the status of the Hybrid UPS systems in its MultiPac, and provides two hardwired discrete alarm outputs as well as updated fault registers that can be read using Modbus TCP/IP. A building management system or other external control system can use this information to take appropriate actions that may mitigate loss of power to the critical load. Refer to specific instructions provided by the building management system integrator or system installer for what external actions will be taken and any manual intervention required with the UPS Controller or Hybrid UPS systems. 3.12.1. Orderly Shutdown Alarm Data center and telecommunications equipment can be shut down in an orderly manner that preserves information and/or transfers operation to other equipment. Typically this requires several minutes to complete. To help mitigate loss of data or missed opportunity to transfer operation to another piece of equipment, the UPS Controller can issue an Orderly Shutdown alarm that signals conditions that may result in power system shutdown in five minutes. Page 36 of 71 400027 Rev B (August 2013) Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction. CAUTION: The Orderly Shutdown alarm does not guarantee that the Hybrid UPS system will continue producing power for any specific period of time in order to avoid potential business losses or damage to critical load equipment. Assure that the external actions taken in the presence of this alarm are appropriate to the potential loss of power to the critical loads.PDF Image | Capstone MicroTurbine Model C65 Hybrid UPS User's Manual
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