Instruction manual

wire size.

Voltage drop can be calculated using the following equa-

tion:

Phase-to-phase voltage drop (V)

= × wire resistance (Ω/km) × wiring distance (m)

× current

(A) × 10

-3

Select a wire size so that voltage drop will be less than 2%

of the normal rated voltage.

7. If the Inverter is connected to a power transformer exceed-

ing 600 kVA, excessive peak current may flow into the

input power supply circuit, and break the converter sec-

tion. In this case, attach an AC reactor (optional) to the

Inverter input side, or a DC reactor (optional) to the DC

reactor connection terminal.

 Wire and Terminal Screw Sizes

1. Control Circuits

Model Terminal

Symbols

Screws Tightening

Torque

N•m

Wires

Applicable Size Recom-

mended Size

Type

AWG

Same

for all

models

MA, MB, MC M3 0.5 to 0.6 Twisted wires: 0.5 to 1.25,

Single: 0.5 to 1.25

20 to 16,

20 to 16

0.75 18 Shielded or

equivalent

S1 to S7, P1,

P2, SC, PC,

R+, R-, S+, S-,

FS, FR, FC,

AM, AC, RP

M2 0.22 to 0.25 Twisted wires: 0.5 to 0.75,

Single: 0.5 to 1.25

20 to 18,

20 to 16

0.75 18