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CHAPTER 9 Capstone PROTECTIVE RELAY FUNCTIONS Note: Trip voltages and durations shown in Figure 9-2 are those entered into the C200 microturbine prior to shipment. The Primary and Fast Over/Under Voltage trip levels and durations may be adjusted at installation as indicated in Table 9-1 and Table 9-2. Figure 9-2. Grid Fault Shutdown Trip Limits for Over/Under Voltage Events Over Voltage (Protective Function 59) Primary Over Voltage Trip The Primary Over Voltage is adjustable from 528 VL-L down to the Under Voltage set point. (Initial factory setting = 528V). The time period is adjustable from 0.01 to 10.00 seconds in 0.01 second increments. (Initial factory setting = 1.00 seconds) The UL1741 requirement for this function is: The device should cease to energize the output within 1 second when any of the phase voltages is higher than 305 VL-N while the other phase voltages remain at 277 VL-N As shipped, each microturbine is tested to verify that it meets the UL1741 requirement to initiate a Grid Fault Shutdown if any phase voltage swells to greater than 305 VL-N for duration greater than 1.0 seconds. The primary trip voltage set point may be adjusted downwards within the range indicated in Table 9-2 and still comply with UL1741. The primary duration to trip may also be adjusted downwards as indicated in Table 9-2 and still comply with UL1741. 410066 Rev C (June 2009) 9-4 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.PDF Image | CAPSTONE C200 MICROTURBINE TECHNICAL REFERENCE
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