Thyristor Firing Card for 3 Phase AC Induction Motor Soft Starter – MSST-15

Product Description :

MSST-15 –Motor Soft Starter SCR firing card

Designed to Trigger 25 Amps to 1000 Amps SCR-SCR modules.
Suitable for 3 phase AC Induction motor up to 300HP (225KW).
User selectable configuration for 3 wire close delta and 6 wire open delta motor.
User settable jump start and soft start / ramp time.
Accepts start and stop command from external potential free contact.
Current Limit and Over load trip facility.
Contactor bypass output and Fault output.

Configuration	Three phase close delta (In Line) or open delta (Inside Delta)
Control Action	Phase angle control (self synchronized)
Start / Stop Command	DOL switch Potential free contact
Output	Suitable Triggering Gate – Cathode pulses to fire back-to-back connected SCRs. 3 X (G1K1+G2K2), 12 pulses.
Smooth Control	Adjustable Ramp Up Time for soft Increase of output voltage.
Current Control	Current Limit and Current Trip settings using on card presets. Feedback is taken from external CT.
Settings	For adjusting ramp time and jump start voltage level.
LED Indications	For Power ON, External Fault, Bypass, Over load Trip, Top of Ramp.
Relay Outputs (DO)	For Bypass relay, Fault Relay (Change over contacts)
Load type	Suitable for both 3 phase squirrel cage Induction motor and Slip ring motor
Aux. Supply Voltage	230 VAC +/- 10%, 50/60 Hz. Max – 10VA
Size in mm/ Mounting	200 x 137 x 90 mm (HWD) – Flat plate mountable using 4 screws.

Sr. No.	Product Description	Part No.
1	Three phase Motor Soft Starter SCR triggering card	2113

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