Energy saving operation of the inverter is represented by comparison with commercial power supply operation. For exampl

1. How much is the sensitivity current? When the sum of the three-phase output current of the inverter reaches approxima

When the wiring between the inverter and motor is long, surge voltage occurs at the terminal of the motor.This surge vol

This is because when the inverter restarts while the motor is coasting, an overcurrent trip can occur during the restart

No. Although the carrier frequency increases or decreases the switching count, the switching speed is the OFF-to-ON spee

When the wire between the 400 V inverter and motor is long (20 m or longer), surge voltage occurs momentarily. This volt

A 400 V inverter does not operate when 200 V is supplied to it, therefore the motor does not rotate. A 200 V motor can b

An error may have occurred due to the rise of the main circuit voltage of the inverter caused by a power surge. Check fo

The basic idea is the same, but the total capacity should be 3.7 kW. (The maximum capacity is also 3.7K.)

You can vary the carrier frequency within the range of 0.7 to 14.5 kHz, and it is initially set to 1 kHz that generates

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FAQ within [ FREQROL-A024 ]

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Energy saving effect of inverter operation

Energy saving operation of the inverter is represented by comparison with commercial power supply operation. 　For example, to control air volume of an air co... More Details >>
- No：21622
- Release Date：2018/08/22 16:28
Output side earth (ground) fault overcurrent protection

1. How much is the sensitivity current? When the sum of the three-phase output current of the inverter reaches approximately 70% of the inverter rated curren... More Details >>
- No：21394
- Release Date：2018/08/22 16:27
Inverter drive of 400 V class motor

When the wiring between the inverter and motor is long, surge voltage occurs at the terminal of the motor.This surge voltage deteriorates insulation of the m... More Details >>
- No：21926
- Release Date：2018/08/22 16:30
What happens if reset occurs during operation?

This is because when the inverter restarts while the motor is coasting, an overcurrent trip can occur during the restart process. However, the recent types o... More Details >>
- No：21477
- Release Date：2018/08/22 16:27
Surge voltage of 400 V inverter

No. Although the carrier frequency increases or decreases the switching count, the switching speed is the OFF-to-ON speed of the IGBT element of the inverter... More Details >>
- No：21401
- Release Date：2018/08/22 16:27
Surge voltage of 400 V motor

When the wire between the 400 V inverter and motor is long (20 m or longer), surge voltage occurs momentarily. This voltage is as two or more times as the DC... More Details >>
- No：21404
- Release Date：2018/08/22 16:27
Driving 200 V motor by 400 V inverter

A 400 V inverter does not operate when 200 V is supplied to it, therefore the motor does not rotate. A 200 V motor can be rotated by a 400 V inverter, howeve... More Details >>
- No：21446
- Release Date：2018/08/22 16:27
"OV3" occurs during an inverter stop.

An error may have occurred due to the rise of the main circuit voltage of the inverter caused by a power surge. Check for the power supply voltage. If the ca... More Details >>
- No：21383
- Release Date：2018/08/22 16:27
Number of inverters that can be connected to a 20 A branch circuit breaker

The basic idea is the same, but the total capacity should be 3.7 kW. (The maximum capacity is also 3.7K.) More Details >>
- No：21508
- Release Date：2018/08/22 16:28
Range of carrier frequency

You can vary the carrier frequency within the range of 0.7 to 14.5 kHz, and it is initially set to 1 kHz that generates low noise and leakage current. You ca... More Details >>
- No：21607
- Release Date：2018/08/22 16:28

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