Medium Voltage Soft Starter
NC3S medium voltage solid state thyristor soft starter is an electronic and intelligent solid state thyristor series medium voltage soft starter with intelligent control. In the soft starting process, the input voltage of the motor terminal is changed by controlling the thyristors connected in series to turn on sequentially, so that the terminal voltage of the motor rises slowly and the soft starting effect is achieved.
- General
- Specifications
- Applications
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NC3S series soft starter has superior performance. The components and PC board are processed in special ways such as salt spray resistance and flame retardant. It can protect the components from moisture, dust, vibration and corrosion, and can adapt to high dust, high moisture, and high corrosion and vibration conditions.
Standards
Certifications:
Voltage class: 6kV, 6.3kV, 6.6kV, 10kV, 11kV (other voltage class can customize)
Features: ramp voltage, torque control, current control, transformer start, slow running
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Technical advantages:
Advanced functions—multiple start curves, slow running, generator mode, transformer inrush current limiting, perfect protection
Customized cabinet design—satisfy customer special demand
Abundant application solution—satisfy different industries demand
Special load start—large inertia load start, frequent changing load start, generator power supply start, synchronous motor start
Special equipment start—auto-starting after power failure, one drive multi-motor with soft stop, test bed specialized start
Certification—arc test, Ministry of Communications certification (damp proof, salt-spray proof, anti-vibration), Classification Society Certification (CCS, DNV, ABS, Lloyd Certified, etc.), CE
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Industry: Oil & Gas
Shanxi CBM compressor
6kV 1120kW/1 set compressor
1 drive 1 Yulin natural gas pipeline supercharge and capacity expansion 10kV 3000kW/12 sets compressor
1 drive 1 |
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Zhongnanshan Tunnel-18.02km, the longest highway tunnel in Asia
36 sets medium voltage soft starter 6kV/140A，
one drive one
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Load solutions |
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No. |
Load |
Application |
Industrial |
Specifications |
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1 |
Blower and fan |
furnace blower, induced/exhaust draft fan, dust exhausting fan, sintering fan, circulating fan, main catalytic fan (high power, in general above 10MW), tunnel axial fan |
Petrochemical, coal chemical, metallurgy, mine, transportation |
high load torque in later period starting time: 20～30 seconds
starting current: 3～4 times
sintering fan: large inertia, long starting time, around 60～90 seconds
Tunnel axial fan: two sets a group, reverse required |
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2 |
Pump |
Decoking water pump, fuel transportation pump, decaling pump (hot rolling)
intake pump, water-delivery pump, slush pump
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Petrochemical, coal chemical, metallurgy, pipeline , mine, electric power |
Normal load, soft stop required Starting time: 10～15 seconds starting current: 2.5～3.5 times
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3 |
Compressor |
Oxygen compressor, nitrogen compressor, air separation, air compressor, hydrogen compressor, booster compressor, natural gas pipeline compressor |
Petrochemical, coal chemical, metallurgy, pipeline , mine, aviation, marine, electric power |
high load torque in late period starting time: 20～30 seconds
starting current: 2 ～3.5 times
some case with high inertia, long starting time, around 40～60 seconds |
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4 |
Belt conveyor |
Coal mine, electric power, iron and steel |
Mine, electric power, petrochemical, coal chemical |
Changing load: no load, half load, full load Dual adjustment soft starter Starting at same time when one drive two motors |
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5 |
Ball mill |
Ball mill |
Petrochemical, mine |
High static friction torque, need impulse starting Starting time: 15～30 seconds Starting current: 3～4 times |
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6 |
Extruding machine |
PP extruder |
Petrochemical, coal chemical |
Constant torque load Starting time: 15～30 seconds
Starting current: 3～4 times
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7 |
Generator |
Marine, pipeline, drilling |
Pipeline, mine, electric power, marine |
Frequency self-adaption, use generator mode: supply voltage and frequency fluctuation Impulse starting (low initial starting current): gas turbine generator, consider generator single step load increasing capacity |
