Справочник Пользователя для Mitsubishi Electronics FR-D720-008

3.2 Installation of power factor improving reactor

When the inverter is connected near a large-capacity power transformer (500kVA or more) or when a power capacitor is to be
switched over, an excessive peak current may flow in the power input circuit, damaging the converter circuit. To prevent this,
always install an optional reactor (FR-HAL, FR-HEL).

∗ When connecting the FR-HEL, remove the jumper across terminals P/+ and P1.

The wiring length between the FR-HEL and inverter should be 5m (16.4feet) maximum and minimized.

REMARKS

Use the same wire size as that of the power supply wire (R/L1, S/L2, T/L3). (Refer to page 17)

P/+

P/+

(m)

(32.8feet)

MCCB

MC

Inverter

AC reactor

(FR-HAL)

Power supply

R

S

T

Z

Y

X

U

V

W

P1

DC reactor

(FR-HEL) *

R/L1

S/L2

R/L1

S/L2

T/L3

IM

Wiring length

Power supply system capacity  

(kVA)

500

0

1000

1500

10

Range requiring  
installation of  
the reactor

MCCB

MC

Inverter

AC reactor

(FR-HAL)

Power supply

R

S

T

Z

Y

X

U

V

W

P1

DC reactor

(FR-HEL) *

IM

Three-phase power input

Single-phase power input