Справочник Пользователя для Mitsubishi Electronics FR-A500

216

z

z

z

z

Since the voltages and currents on the inverter power supply and output sides include harmonics,

measurement data depends on the instruments used and circuits measured.

When instruments for commercial frequency are used for measurement, measure the following circuits

with the instruments given on the next page.

Note: Use an FFT to measure the output voltage accurately. A tester or general measuring instrument

cannot measure accurately.

+

-

Ar

As

At

Vr

Vs

Vt

W

11

W

12

W

13

Au

Av

Aw

Vu

Vv

Vw

W

21

W

22

V

U

V

W

Inverter

P/+

N/–

3-phase
power
supply

Instrument
types

Input voltage

Input current

Output voltage

Output current

To motor

:Moving-iron type

:Electrodynamometer type

:Moving-coil type

:Rectifier type

R

S

T