YASKAWA A1000

3.4 Main Circuit Wiring
38 YASKAWA ELECTRIC TOEP C710616 50B YASKAWA AC Drive - A1000 6-Phase/12-Pulse Input Installation Guide
 Wire Gauges and Tightening Torque
Use Table 3.2 to select the appropriate wires and crimp terminals.
Wire gauges listed in the tables are for use in the United States.
Note: 1. Wire gauge recommendations based on drive continuous current ratings (ND) using 75°C 600 Vac vinyl-sheathed wire assuming
ambient temperature within 40°C and wiring distance less than 100 m.
2. Terminals +3 and – are for connecting optional devices such as a braking unit. Do not connect other nonspecific devices to these
terminals.
• Consider the amount of voltage drop when selecting wire gauges. Increase the wire gauge when the voltage drop is
greater than 2% of motor rated voltage. Ensure the wire gauge is suitable for the terminal block. Use the following
formula to calculate the amount of voltage drop:
Line drop voltage (V) = × wire resistance (Ω/km) × wire length (m) × current (A) × 10
-3
• Refer to instruction manual TOBP C720600 00/TOBP C720600 01 for braking unit option or braking resistor option
wire gauges.
• Use terminal +3 and the negative terminal when connecting a braking unit option.
• Do not connect the regenerative converter or the regenerative unit to the 6-Phase/12-Pulse A1000 drive.
•Refer to UL Standards Compliance on page 64 for information on UL compliance.
Yaskawa recommends using closed-loop crimp terminals on all drive models. UL/cUL approval requires the use of
closed-loop crimp terminals when wiring the drive main circuit terminals. Use only the tools recommended by the
terminal manufacturer for crimping. Refer to Closed-Loop Crimp Terminal Size on page 65 for closed-loop crimp
terminal recommendations.
The wire gauges listed in Table 3.2 are Yaskawa recommendations and are based on the 6-Phase input current ratings
specified in Table C.1. Refer to local codes for proper wire gauge selections.
 6-Phase/12-Pulse Input 400 V Class
Table 3.2 Wire Gauge and Torque Specifications
Model
CIMR-A
Terminal
Recomm. Gauge
AWG, kcmil
Wire Range
AWG, kcmil
Screw
Size
Tightening Torque
N-m (ib.in.)
4T0058
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
8 10 to 1/0
M8
9 to 11
(79.7 to 97.4)
U/T1, V/T2, W/T3 4 10 to 1/0
B1, B2 – 14 to 10 M4
1.1 to 1.2
(9.74 to 10.6)
68 to 6M8
9 to 11
(79.7 to 97.4)
4T0072
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
8 10 to 1/0
M8
9 to 11
(79.7 to 97.4)
U/T1, V/T2, W/T3 3 10 to 1/0
B1, B2 – 14 to 10 M4
1.1 to 1.2
(9.74 to 10.6)
66M8
9 to 11
(79.7 to 97.4)
4T0088
R/L1, S/L2, T/L3
R1/L11, S1/L21, T1/L31
6 6 to 1/0
M8
9 to 11
(79.7 to 97.4)
U/T1, V/T2, W/T3 2 6 to 1/0
–, +3 – 12 to 2 M6
2.5 to 3.0
(22.1 to 26.6)
46 to 4M8
9 to 11
(79.7 to 97.4)
3