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Rich Electric - Model SN-HH Series -High Horsepower AC Drive - 800~1600HP
The SN-HH series of AC drives is a high performance AC Drive that produces an output of adjustable voltage and frequency to control the speed of a squirrel cage induction motor for drilling. The modular design unit has separate converter capacitor inverter sections installed in a common enclosure. Sections can be paralleled to increase power. This PWM design provides high starting torque by use of IGBT transistors. The drive provides 3 modes of control and speed accuracy to suit application requirements; V/Hz (2%), sensor less vector (0.1%), or flux vector control (0.01% / motor-mounted Resolver (standard) and drive-mounted PG-RD1 card required). Programmable, networkable, and modular are outstanding features of the SN-HH series AC drive.
Ratings:
- 600 to 1600 HP at 460 VAC,
- 800 to 1600 HP at 600 VAC
Overload capacity: 150% for 60 sec CT
- Starting torque: 150%
- Electronic reversing
- Adjustable accel/decel: 0.1 to 6000 sec
Controlled speed range: (1) 40:1, (2) 100:1, (3) 1000:1
- Drive efficiency: 96 to 98%
- Displacement power factor: 0.98
- Output frequency: 0.1 to 400 Hz
- Jog forward and reverse
- Power loss ride-thru: 2 sec
- Inertia ride-thru
- Selectable auto restart after momentary power loss
Programmable auto restart
- (0 to 10 attempts) on resettable fault
Critical frequency rejection:
- 3 selectable, adjustable bands
- DC bus CHARGE indicator
- Optically-Isolated controls
- Phase-to-phase / phase-to-neutral short circuit protection
- Ground fault protection
- Electronic motor overload
- Current and torque limit
- Overtorque/undertorque detection
- Fault circuit: overcurrent, overvoltage, and overtemperature
- Input/output phase loss