Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator. Boiler usually equipped with solar and Main gas firing equipments , and you can imagine that huge boiler disappear in seconds unless operator tae his precaution from operation ha!ards., hence Boiler always equipped with a protection relays to trip the boiler out of service if ha!ards conditions has happened , these relays are enclosed at huge protection system is called ( Master"uel #rip ). "rom its name ( Master "uel #rip ) , it produces trip signal for fuel systems from operation , then trip the boiler out of service away from dang er. this rel ay needs many co nditions to operate M$%#&"&#*+ , -/*#*-% 01 21&3&$#&+-#&#*-41/&$5&/ *G3#*G 61-%% -" $"&*+# 71/M &8&3* 3* 91/M &8&-: -: ;1$"/ "$%#-+ <1"$& +&%%& 3* 3* =1% :$ #3/-G $B-M$>1-MB%#*-$*"-: -: -: 2?1-/&%&+-#&#*-221+$#*$-%% -" "$M& 241B-*&&M&G&5 #*+ 261-%% -" $"$M& 2713+@+ B5+$%% 8$ 8 & $B-M$-%& 291$"&#*+ /&$5 #*+
Generator ( boiler ) is very important equipment at thermal
power units , Boiler is the steam supply for the unit to rotate the
turbine's rotor , hence produce electricity at Generator's
stator.
Boiler usually equipped with solar and Main gas firing
equipments , and you can imagine that huge boiler disappear in
seconds unless operator take his precaution from operation
hazards., hence Boiler always equipped with a protection relays to
trip the boiler out of service if hazards conditions has happened ,
these relays are enclosed at huge protection system is called (
Master Fuel Trip ).
From its name ( Master Fuel Trip ) , it produces trip signal for
fuel systems from operation , then trip the boiler out of service
away from danger. this relay needs many conditions to operate
MASTER FUEL TRIP , CONDITIONS :-
1-REHEATER PROTECTION2-DELAYED LIGHTING3-LOSS OF ALL FUEL
INPUT4-DRUM LEVEL HI HI5-DRUM LEVEL LOW LOW6-ALL FD FAN
STOP7-FURNACE PRESSURE HI HI8-CCS WATCHDOG ABNORMAL9-COMBUSTION AIR
FLOW LOW LOW10-CONDENSER PROTECTION11-PARTIAL LOSS OF
FLAME12-BOILER EMERGENCY TRIP13-LOSS OF ALL FLAME14-HP/LP BYPASS
VALVE ABNORMAL CLOSE15-ALL FUEL TRIP DELAY TRIP
