Datasheet
B-34 Solid-state Star-delta Timer H3DS-G
Connections
■ Block Diagram
■ I/O Functions
■ Terminal Arrangement
Note: DC supply voltage does not require the designation of polarity.
AC (DC) input
Star 
operation 
time scale 
selector
Power 
supply 
circuit Output 
circuit
Indicator 
circuit
Star operation 
indicator
Delta operation 
indicator
Star operation
Delta operation
Star opera -
tion time 
oscillation 
circuit
Star opera -
tion time 
counting 
circuit
Star-delta 
transfer 
time oscilla -
tion circuit
Star-delta 
transfer 
time 
counting 
circuit
Star-delta 
transfer 
time 
selection
Inputs ---
Outputs Control output Star output is turned OFF when the dial set value is reached and delta output is ON after 
the preset transfer time elapses
A1 17 27
A1 17 27
17
18 28
18 28 A2
18 28 A2
27 17
18 28
27
H3DS-GLC
(see note)
H3DS-GL










