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.)
10
10 20 30 40 50
Output Current (%)
Ambient temperature (ºC)
20
30
40
50
60
70
80
90
100
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.
436587109
Output Current (%)
Carrier frequency (KHz)
7% of rated current
Rated
Current
Output Current (%)
Carrier frequency (KHz)
43658710139121511 14
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
To Next Page
Loading...
Need help?
General
