Function Modules For Star-Delta (Wye-Delta) Start - Siemens SIRIUS 3RT2 Manual

3.3.2

Function modules for star-delta (wye-delta) start

Applications
The function module for star-delta (wye-delta) start is used to switch from star (wye) to delta
operation.
Features
The function module for star-delta (wye-delta) start has the following features:
● All modules with wide control voltage range
● Integrated varistor (surge suppressor)
● One module kit for contactor screw-type and spring-loaded connection systems
● One module kit for S00, S0, S2 and S3 size contactors
(options only with main circuit connecting comb)
● Large wide voltage range (24 to 240 V AC/DC) and
● 3 selectable time ranges (10 s, 30 s, 60 s)
● Operating time adjustment from 5 to 100% per time range (corresponds to 0.5 s to 60 s)
● Changeover delay set to a non-adjustable value of ≥ 50 ms
● Switch position indication for the contactor below in the form of a mechanical switch
position indicator (plunger)
● Control exclusively via A1/A2 on the line contactor below
● No further wiring required
The wide voltage and the wide time range ensure advanced use of the function modules.
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
Product description
3.3 Applications
21