Lead Length Specifications - Toshiba vlp technology P9 ASD Installation & 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 affect the performance of the motor. Special cables are not required.
Lead lengths from the ASD to the motor in excess of those listed in
to the output of the ASD.
All Toshiba CT motors use an insulation system that is NEMA MG1 Part 30 compliant.
All Toshiba XT motors use an insulation system that is NEMA MG1 Part 31 compliant.
Table 1 lists the suggested maximum lead lengths for the listed motor voltages.
Model
230-Volt
460-Volt
Note: Contact the TIC Customer Support Center for application assistance when using lead
lengths in excess of those listed or for filter selection assistance for a given application.
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.
20
Table 1. Lead Length Recommendations.
PWM Carrier NEMA MG1 Part 30
Frequency Compliant Motors
All
 5 kHz
5 kHz
Table 1
NEMA MG1 Part 31
Compliant Motors
450 feet
200 feet
100 feet
P9 ASD Installation and Operation Manual
may require filters to be added
1000 feet
600 feet
300 feet