MSST-15
MSST-15
Product Description:
MSST-15 – Motor Soft Starter SCR firing card
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Key Features
- 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.
Technical Specification
| 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. |
Ordering Information
| Sr. No. | Product Description | Part No. |
|---|---|---|
| 1 | Three phase Motor Soft Starter SCR triggering card | 2113 |
