3RT1/3RH1 contactors
SIRIUS System Manual
3-44
GWA 4NEB 430 0999-02b
Features of the star-
delta combinations
The following table shows you the features of the fully assembled star-delta
combinations with time-delay auxiliary switch blocks with the star-delta
function (3RT19.6-2B...) and solid-state time relays with semiconductor out-
put and the possible configuration if you use the self-assembly kit:
Table 3-19: Configuration of the star-delta combinations
Important
If a time-delay auxiliary switch block is mounted on the front of K3, an auxili-
ary switch block can only be mounted on the side of K3.
Accessories
The following basic unit accessories can also be used for star-delta combina-
tions:
• Auxiliary switch blocks (front, side)
• Surge suppressors
• Time-delay auxiliary switch blocks with star-delta function
In addition, there are special accessories available for the star-delta combi-
nations:
• 3-phase feed-in terminals
• Star-point links (parallel links)
• Terminals for contactor coils (S2/S3)
• Mechanical connectors
• Wiring modules
Terminal for
contactor coils
In order to reach coil terminals A1 and A2 in the star-delta combination bet-
ter from contactors in frame sizes S2 and S3, terminals for contactor coils
can be used.
For each combination, 2 x A1 and 1 x A2 are required.
Infeed
With conductor cross-sections > 2 x 2.5 mm
2
and 1 x > 4 mm
2
, a feed-in
terminal block must be used for the star-delta combination in frame size
S00. This makes the following conductor cross-sections possible:
• Frame size S00: up to 6 mm
2
• Frame size S0: up to 25 mm
2
• Frame size S2: up to 50 mm
2
Frame size S00 Frame sizes S0 to S3
Fully assembled At front
(time-delay auxiliary switch
block)
Lateral (time relay)
Kit At front • Lateral (time relay)
• At front
(time-delay auxiliary switch
block)
To Next Page
Loading...
Need help?
General