Denyo DCA-600P, Instruction Manual

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8. Switch and Lamp for Electronic Governor Controller (in the control box)
(1) Isochronous-Droop Change-over switch
The generating set can change the governor control between
”Isochronous Governor Control and Droop Governor Control”
by “Isochronous-Droop Change-over switch” where is equippped
with the control box.
The original position at factory shall be set in “Droop Governor
Control”. Operate the unit in condition of “Droop Control”
in common.
In case of starting with a heavy load, operate the unit in condition
of ” Droop Governor Control” because it is better for starting
efficiency than “Isochronous Governor Control “.
Explanation for the control
①
“Isochronous Governor Control “----- Frequency is constant regardless of load.
When the generator is set in a frequency thet will be pointed in condition of NO-LOAD,
the governor controls the frequency constantly regardless of load.
②
“Droop Governor Control “----- Frequency will be alternative depending on load.
” Droop Governor Control” means that frequency can be alternative depending on load.
When the rated frequency will be reduced at about 2.0 Hz against NO-LOAD.
Therefore, NO-LOAD frequency should be set at 52.0 to 52.5Hz.
(2)
Frequency change – over switch
This is for switching the frequency from 50Hz to 60Hz or 60Hz to
50Hz.
ISOCHRONOUS
DROOP
ISOCHRONOUS-DROOP
CHANGE-OVER SWITCH
FREQUENCY
CHANGE-OVER SWITCH
60Hz
50Hz
FREQUENCY
CHANGE-OVER SWITCH
60Hz
50Hz ISOCHRONOUS
DROOP
ISOCHRONOUS-DROOP
CHANGE-OVER SWITCH
SHUTDO WN LAMP ACTIO N ALERT L AMP F AUL T RESET
WARNING L AMP DIAGNOSTICS L AMP