Toshiba H9 - Manual (Page 28)

20 H9 ASD Installation and Operation Manual
Lead Length Specifications
Adhere to the NEC and any local codes during the installation of ASD/Motor systems. Excessive lead
lengths may adversely effect the performance of the motor. Special cables are not required. Lead lengths
from the ASD to the motor in excess of those listed in
Table 1 may require filters to be added to the output
of the ASD. Table 1 lists the suggested maximum lead lengths for the listed motor voltages.
Note: Contact Toshiba for application assistance when using lead lengths in excess of those
listed.
Exceeding the peak voltage rating or the allowable thermal rise time of the motor
insulation will reduce the life expectancy of the motor.
When operating in the Vector Control mode the carrier frequency should be set to
2.2 kHz or above.
Table 1.
Model
PWM Carrier
Frequency
NEMA MG-1-1998 Section IV Part 31
Compliant Motors 2
230 Volt All 1000 feet
460 Volt
< 5 kHz
600 feet
≥ 5 kHz 300 feet