Medium Voltage Variable Frequency Drives

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