3.3kV medium voltage variable speed drives for steel mills

Model:	-
Brand:	Sinopak
Origin:	Made In China
Category:	Electronics & Electricity / Power Supply & Distribution / Other Power Supply & Distribution
Label:	MV VFD , ac drives , variable speed drive
Price:	-
Min. Order:	1 pc

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Product Description

3.3kV medium voltage variable speed drives for steel mills

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

Medium voltage input	Voltage range	3KV, 3.3KV, 4.16KV, 6KV, 6.6KV, 10KV, 11KV (-20%~+15%)
Medium voltage input	Frequency range	50/60 Hz±10%
Medium voltage output	Output voltage	0~Rated voltage
	Output frequency and accuracy	0~50/60 Hz, 0.01 Hz
	Output waveform	Multilevel PWM sin wave, total harmonic distortion (THD) < 4%
Performance	Efficiency	Inversion efficiency at an rated load > 98.5%, overall efficiency (including the transformer) > 97%
	Power factor	Power factor (within the range of speed regulation) > 0.95, power factor (at a rated load) > 0.97
	Overload capacity	110%: long-term stable operation, 120%: 1 minute, 150%: 2 seconds, and 160%: prompt protection
	Allowable outage duration	200 ms (and longer under light load)
	Mean time between failures	> 100,000 hours
Control	Control mode	flux optimization and control with space vector PWM
	Acceleration/deceleration time	1 to 3,600 seconds
	Switching quantity input/output	11-way/10-way
	Analog input	4-way (optional: 0 to 5 V, 4 to 20 mA)
	Analog output	3-way (optional: 0 to 10 V, 4 to 20 mA )
	Communications	RS485 interface, Modbus-based (optional Profibus-DP and Ethernet interfaces)
	Control power supply	Single-phase 220 V AC, 5kVA
Excitation control ( dedicated for the synchronous motor)	Control mode	Automatic excitation control, manual excitation control, multi-stage speed excitation control, and external excitation control for the MVVFD
Environment	Operating environment	Operating in indoor environment without explosive or corrosive gases, conductive dust, or oil fog
	Operating ambient temperature	0℃~+45℃
	Storage and transportation temperature	-40℃ ~+70℃
	Ambient humidity	< 90% (No condensation)
	Operating altitude	Derating required for an altitude greater than 1000 meters
Others	Protection function	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
	Cooling mode	Forced-air cooling
	User interface	An 10-inch Human Machine Interface
	Protection grade: IP31	IP31