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9.0 Wind Turbine Operation
NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer
on page v of this document.
DOC012R02 AOC 15/50 User Manual Nov 2001
73
Table 9.1-3 AOC 15/50 System indicating lights
Function
Color
Description
Turbine Ready
Green
ON: Turbine can be connected to the utility network.
Turbine On
Line
Green
ON: Turbine is connected to the utility network.
Brakes Applied
Red
ON: Any of the brakes are deployed.
OFF: When parking brake is released during parking brake release
test.
Brake Cooling
Cycle
Red
ON: Turbine is waiting for brakes to cool (typically 15 minutes).
FLASHING: Parking brake undercurrent fault. Must be reset
manually.
Grid Fault
Red
ON: Monitor detected over/under voltage, phase reversal, loss of
phase. Stays on for duration of brake cooling cycle.
Generator
Thermal Alarm
Red
ON: Generator internal thermal switch indicates an elevated
temperature. Must be reset manually.
FLASHING: Softstart thermal switch indicates an elevated
temperature. Must be reset manually.
Rotor
Overspeed
Red
ON: Maximum rotor speed exceeded (1875 rpm for 60 Hz). Must
be reset manually.
FLASHING: Difference of over 20 rpm between the two speed
sensors. This does not shut down the turbine.
Rotor
Overpower
Red
ON: Generator maximum power rating exceeded (1550 rpm for
50 Hz and 1860 rpm for 60 Hz ).
High Wind
Speed
Red
ON: Wind speed has exceeded program limit (typically 22.3 m/s or
50 mph). Stays on for duration of brake cooling cycle.
Spare Red ON: Low power shut down. Turbine power output is low for giving
wind speed.
FLASHING: Three low power shut downs have occurred within
75 minutes. Must be reset manually.