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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)
500% - 60 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 units.
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, 50mA max.
Approvals UL Listed, Canadian UL (cUL) Listed CE Approved.
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
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