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10KW
Induction Wind Turbine Control Enclosure
Relay
Description (lower left to upper right) On-Delay
Relay: Delay
start up of turbine at initial application of power or return of power
after loss of grid. Normally
this relay is set for a 6 minute delay.
This relay is the last in a 3 relay cascade wired to interrupt
power to the micro-controller and interconnect relay. Over
/ Under Voltage Monitor Relay: Relay
set to trip when the voltage level is 75% of or 125% of nominal system voltage (240V) for a period of .5 sec.
Over
/ Under Frequency Monitor Relay: Relay
is set to trip when the frequency is below 59.4Hz or greater then 60.5 Hz for a
period of .1 sec. Interconnect
relay: L-1 90 Amp soft start dual SCR
relay. 1200 amp
16.6ms surge Safety
/Protect Relay : L-2
50 Amp
contactor. Brake
Interface Relay:
Supply power to release brake and actuate safety / protect relay. Micro-controller
(lower right): Generator
start, shaft speed monitor, and lock-out functions.
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