Governor

CWT-PLC type hydraulic turbine velometer,has the overhaul and the maintenance parameter establishment is simple
static characteristic curve misalignment: <5%
rotational speed dead area: ≤0.08%
under idling operating mode when automatic movement rotational speed swinging relative value: ≤±0.25%
flings when 25% loads relay dead time: ≤0.2 second
relay is smaller than 0.2 second motionless
flings when 100% loads surpasses above the 3%Nr value the wave ridge not to surpass two times. From relay first time to opens the direction movement not to surpass the time which until the unit rotational speed undulating quantity ±0.3% experiences not to be bigger than for 40 seconds
the mean time between failure is not smaller than 8000h.
velometer parameter setting range
forever condition will slip coefficient bp=0~10%
the transition condition slips coefficient bt=0~100%
cushion time-constant Tb=0~20S
rise time constant Tn=0~2S
artificial malfunction area ic=0~0.9Hz
assigns frequency range fr=45~55Hz
assigns power range pr=0~100%