ALSTOM ALSPA series drives

Model range: VNTC and WNTC series from 4025E (7.5kW, 25A) to 41850E (750kW, 1850A), as well as corresponding line reactors.

Soft starter

1. ALSPA DNTA-6 Pulse Digital Starter (19A to 1000A)

The ALSPA DNTA 6 pulse digital starter using vector control is a new step forward in starting induction motors. It effectively provides gradual and optimal starting for the motor, as well as controlled process deceleration and improved availability.

Technical features:

Startup mode: current limiting startup, vector control startup

Stop mode: Free parking, controlled deceleration (for pumps)

Motor protection: thermal protection, phase loss, unbalanced phase, motor disabled, motor thermistor PTC

Pump protection: No load operation Imin、fmax

Measurement: V1, Cos φ, kW, accuracy 2%

Energy consumption: kWh and operating time (hours)

Special functions: preheating, overspeed prevention, energy saving, automatic restart after power drop

Digital input: run, stop, controlled deceleration, quick stop

Analog output: I (Amp) or P (kW) as 4-20mA signal

Serial link: Modbus/Jbus, RS485, PC RS232

Standards: CE, EN 60947-1, EN 60947-4-2, EN 61000-4 series, etc

Application:

Pump: Vector control start (<3FLC), no-load operation protection, controlled deceleration (suppressing water hammer), automatic restart due to power drop, preheating

Fan: limited current start, adaptive start current (depending on fan rating, inertia, etc.), optimal start under all conditions

Mining machinery: limited current starting and adaptive starting current (depending on the load) for variable load machinery, applications include conveyors, crushers, mills, etc

Compressor: limited current start, adaptive start current (depending on compressor load), applications include reciprocating compressors, screw compressors, centrifugal compressors

Power generation equipment: The motor on the power generation equipment starts, reducing active and reactive power, reducing the required generator size, and significantly saving capital costs

Product range: The DNTA series covers a current range from 19A to 1000A and is suitable for voltage levels from 220V to 690V.