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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA
Technical Reference: Dual Mode Controller (DMC) Technical Information
Voltage [per Unit]
Microturbine & UVR Undervoltage Response
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
UVR Settings
Microturbine Default Settings
0
2
4
6
8
10
Time [sec]
Figure 22. MicroTurbine and UVR Coordination
Utility Fault (sag)
5 - 30 min
Normal
Fault
Normal
Normal
Fault
Normal
Utility Voltage
Protected Load
Voltage
DMC Switch M1
Closed
GC Enable (2 to grd)
Active
UVR does not
open M1
Inactive
SA Enable (3 to grd)
Stop
Start/Stop (4 to grd)
Inactive (Open)
SA Load (A to B)
MicroTurbine Output
MicroTurbine State
MT Fault
Detection
Grid Connect
Reconnect
Time Delay
Hot Standby
Grid Connect
Figure 23. Fast Transfer with DMC – GC to Hot Standby to GC
410039 Rev. G (April 2008)
Page 43 of 73
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.