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Medium voltage variable frequency drives
Product Structure
Sinopak MVVFD includes integrated structure and split-type structure based on capacity. The integrated structure is adopted in low capacity MV VFD and the split-type structure is adopted in high capacity MV VFD. In terms of an integrated machine, which is compact in size, phase-transformer, power units, control systems, and power frequency bypass are fully integrated into one cabinet; In terms of a split-type machine, phase-transformer, power units, control systems and power frequency bypass are assembled in separate cabinets in which are combined on the spot.
Technical Parameters
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Medium voltage input
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Voltage range
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3KV, 3.3KV, 4.16KV, 6KV, 6.6KV, 10KV, 11KV (-20%~+15%)
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Frequency range
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50/60 Hz±10%
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Medium voltage output
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Output voltage
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0~Rated voltage
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Output frequency and accuracy
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0~50/60 Hz, 0.01 Hz
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Output waveform
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Multilevel PWM sin wave, total harmonic distortion (THD) < 4%
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Performance
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Efficiency
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Inversion efficiency at an rated load > 98.5%, overall efficiency (including the transformer) > 97%
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Power factor
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Power factor (within the range of speed regulation) > 0.95, power factor (at a rated load) > 0.97
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Overload capacity
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110%: long-term stable operation, 120%: 1 minute, 150%: 2 seconds, and 160%: prompt protection
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Allowable outage duration
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200 ms (and longer under light load)
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Mean time between failures
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> 100,000 hours
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Control
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Control mode
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flux optimization and control with space vector PWM
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Acceleration/deceleration time
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1 to 3,600 seconds
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Switching quantity input/output
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11-way/10-way
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Analog input
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4-way (optional: 0 to 5 V, 4 to 20 mA)
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Analog output
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3-way (optional: 0 to 10 V, 4 to 20 mA )
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Communications
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RS485 interface, Modbus-based (optional Profibus-DP and Ethernet interfaces)
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Control power supply
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Single-phase 220 V AC, 5kVA
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Excitation control ( dedicated for the synchronous motor)
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Control mode
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Automatic excitation control, manual excitation control, multi-stage speed excitation control, and external excitation control for the MVVFD
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Environment
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Operating environment
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Operating in indoor environment without explosive or corrosive gases, conductive dust, or oil fog
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Operating ambient temperature
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0℃~+45℃
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Storage and transportation temperature
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-40℃ ~+70℃
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Ambient humidity
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< 90% (No condensation)
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Operating altitude
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Derating required for an altitude greater than 1000 meters
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Others
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Protection function
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Overcurrent, overload, short circuit, three phase current unbalance, immediate electric outage, input/output phase loss, overvoltage, undervoltage, body overheat, transformer overheat, shutdown due to external fault, and power unit auto bypass
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Cooling mode
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Forced-air cooling
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User interface
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An 10-inch Human Machine Interface
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Protection grade: IP31
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IP31
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Product Image
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