Appendix
A-3
Note 1) The output voltage indicates the output capacity [kVA] at 200V for the 200V series, and 400V
for the 400V series.
Note 2) Indicates the total effective value including the higher harmonics.
Note 3) Indicates the case for the standard 4-pole squirrel cage motor.
Note 4) When 40°C is exceeded, derate the output current by 2% for each 1°C. (Refer to Fig. 1-1.)
1 0
1 0
2 0
3 0
4 0
5 0
O
u
tp
u
t
C
u
rre
n
t (%
)
A m b ien t tem p era tu re (ºC )
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 00
Fig. 1-1 Derating according to ambient temperature
Note 5) Drives up to N22K0S, and X30K0S working in constant torque allow carrier frequency setting
up to 10kHz. Derate 7% current per kHz above that frequency. When these drives work in
variable torque derate above 4kHz in ratio shown in fig 1-2.
Larger drives than N22K0S or X30K0S should be derated in a 7% current per kHz above
4kHz either constant torque or variable torque as shown in fig 1-3
If the heatsink temperature 70°C is exceeded and the output current exceeds 90%, the carrier
frequency will automatically change to 4kHz.
4
3
6
5
8
7
1 0
9
O
u
tp
u
t C
u
rre
n
t
(%
)
C a rrie r freq ue ncy (K H z)
7 % o f rate d cu rre nt
R a ted
C u rren t
O
u
tp
u
t
C
u
rre
n
t (%
)
C a rrie r freq ue ncy (K H z)
4
3
6
5
8
7
1 0
1 3
9
1 2
1 5
11
1 4
Fig. 1-2
Derating according to carrier frequency
for drives up to N22K0 and up to X30K0
Note) When changing the carrier frequency, take care to the motor's temperature rise.
Fig. 1-3
Derating according to carrier
frequency for drives larger than
N22K0 or X30K0
