Three Phase AC Induction Motor Starter (Thyristor Drive) – MSS

Product Description :

MSS – Three phase Motor Soft Starter

Suitable for 3 phase AC Induction motor up to 275KW (370HP).
Semikron make SCR modules (SKKT series).
Reduces starting current.
Motor connection for both 3 wire close delta (In line) and 6 wire open delta (in-side line).
User settable jump start and soft start / ramp time.
Accepts start and stop command from external potential free contact.
Over load trip facility and built in motor protection.
Contactor bypass output and Fault output.
Easy to install and maintain.

Parameters	Description
Configuration	Three phase close delta (In Line) or open delta (Inside Delta)
Control Action	Phase angle control (self - synchronized)
Control Switches	Front panel push button switches for Start/Stop to start and stop the motor. Reset push button switch to use in case of overload trip condition. (Optionally – the control switch connections can be given on the terminals for external remote operation).
Incomer Supply	415VAC/440VAC @ 50Hz. (690VAC – optional)
Output	0 to 415/440VAC 3 phase variable voltage to achieve full speed in max. 10-20 Sec.
Smooth Control	Adjustable Ramp Up Time for soft Increase of output voltage.
Motor Protection	Motor protection against overload, phase failure, and phase reversal. Feedback is taken from built-in current transformers.
Settings	For adjusting ramp or soft start time and jump start voltage level. (internally fixed – but accessible to the user for fine adjustments).
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	As mentioned in Ordering Information table.

Model	Motor Ratings (HP) / (KW) @ 440VAC	Size (H x W x D) mm	Part No.
MSS-006	(1 to 6) HP/(0.75 to 4.5) KW	255 x 170 x 85	2118
MSS-010	(7 to 10) HP/(5 to 7.5) KW	255 x 170 x 85	2119
MSS-015	(11 to 15) HP/(8 to 11) KW	255 x 170 x 85	2120
MSS-020	(16 to 20) HP/(12 to 15) KW	305 x 185 x 220	2121
MSS-035	(21 to 35) HP/(16 to 26) KW	325 x 185 x 245	2122
MSS-050	(36 to 50) HP/(27 to 37) KW	325 x 185 x 245	2123
MSS-075	(51 to 75) HP/(38 to 55) KW	345 x 185 x 285	2124
MSS-110	(76 to 110) HP/(56 to 82) KW	425 x 285 x 300	2125
MSS-150	(111 to 150) HP/(83 to 111) KW	425 x 285 x 300	2126
MSS-200	(151 to 200) HP/(112.5 to 147) KW	425 x 285 x 300	2127
MSS-225	(198 to 225) HP/(147 to 168) KW	425 x 285 x 300	2128
MSS-275	(226 to 275) HP/(170 to 205) KW	625 x 350 x 350	2129
MSS-300	(280 to 370) HP/(210 to 275) KW	625 x 350 x 350	2130

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