Toshiba 18 - 1250 A - Manual (Page 10)

TE Series Digital Solid State Soft Starters 18 – 1250A
3
1.1.3 Design Specifications
Type of Load: Three phase AC induction motors
AC Supply Voltage: Universal, 208 - 600VAC ±10%, 50/60 Hz
Power Ratings: 18 - 1250 Amps, 7.5 - 1000 HP @ 460V
Unit Capacity - Continuous Max. Amp rating is UL Listed continuous rating
Unit Capacity - Overload Rating
(Percent of motor FLA) 350% - 30 seconds
600% - 10 seconds
Power Circuit
6 SCRs, full phase angle firing using a hard fire picket firing circuit and “Back
Porch” DC carryover to avoid motor transient problems
SCR Firing Angle Detection
6 pulse Independent Locked Phase Tracking with Auto-synchronization,
prevents misfiring on unstable source frequency
SCR PIV Ratings
(Peak Inverse Voltage)
1600V
Phase Rotation
Operates with any phase sequence, or
programmable rotation trip ABC / ACB / Off
Transient Protection RC snubber dv/dt networks on each phase
Cooling Fan assisted convection
Bypass Contactor Standard on all NEMA 12 enclosed units
Units 160A and less: Standard on all open panel units (-BP versions)
Units 210A and over: Optional on open panel units (-BP versions)
Bypass Contactor Rating Shunt rated or can be sized for Line start rated contactor (see charts)
Bypass Contactor Control Integral control is included, but contactor can be externally controlled as well.
Ambient Condition Design
Open panel mount units: 0° to 50 °C (32° to 122°F)
Factory enclosed units: 0° to 40°C (32° to 104°F)
5 - 95% relative humidity
0 - 3300 ft. (1000m) above sea level without derating
Control Power 120VAC (customer supplied), 240VAC optional
Inputs 6 Dry (voltage free) contact inputs using 24VDC from an internal power supply
Programmable Outputs
3 relays, 2 each Form C (SPDT), 1 each Form A (SPST).
Can be programmed for 26 functions, with delays or flashing.
Output Relay Contact Rating 5 Amps, 240VAC max. (1200VA)
Dedicated Fault Output
AC Triac solid state switch
240VAC/DC, 50mA max.
Approvals UL Listed, Canadian UL (cUL) Listed, CE Approved