Medium Voltage Frequency Drive

Medium voltage input

Voltage range

3kV, 4.16kV, 6kV, 6.6kV, 10kV, 11kV (-20%~+15%)

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%: immediate 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 RTU, Profibus DP (optional), Industry Ethernet Protocol (optional)

Control power supply

Single-phase 220 V AC, 5kVA

Excitation control

Control mode

Automatic excitation control, manual excitation control, multi-stage speed excitation control, and external excitation control for the MVVFD

(dedicated for the synchronous motor)

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