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Electrical Plant
Electrical abbreviations
TT1
= 1st speed motor cont act or
TT2
= 2nd speed mot or contact or
TTC
= Ref rigerat or compressor cont act or
Y
= Star closing contact or
RT1
= 1st speed motor t hermal relay
RT2
= 2nd speed mot or t hermal relay
RTC
= Ref rigerat or compressor t hermal relay
TT
= Main t ransf ormer
TE
= Elect ronic t ransf ormer
TA
= Amperomet ric t ransformer
START
= Start pushbutt on
IF
= Flange sw it ch
HP
= Gas pressure sw itch
VS
= Gas solenoid valve
F1
= Main f use
F2
= First t ransf ormer f use
F3
= Second t ransf ormer fuse
PA
= Push-but ton panel
AD
= Amperomet ric board w it h display
SF
= Blocking syst em elect ronic board