Delta Electronics VFD-VL manual 230VAC input voltage, Dimensions are in millimeter and inch

Appendix B Accessories

„Use a motor with enhanced insulation.

„Connect an output reactor (optional) to the output terminals of the AC motor drive

„The length of the cable between AC motor drive and motor should be as short as possible (10 to 20 m or less)

„For models 7.5hp/5.5kW and above:

Insulation level of motor	1000V	1300V	1600V
460VAC input voltage	66 ft (20m)	328 ft (100m)	1312 ft (400m)
230VAC input voltage	1312 ft (400m)	1312 ft (400m)	1312 ft (400m)

NOTE

When a thermal O/L relay protected by motor is used between AC motor drive and motor, it may

malfunction (especially for 460V series), even if the length of motor cable is only 165 ft (50m) or less.

To prevent it, please use AC reactor and/or lower the carrier frequency (Pr. 00-17 PWM carrier

frequency).

NOTE

Never connect phase lead capacitors or surge absorbers to the output terminals of the AC motor

drive.

„If the length is too long, the stray capacitance between cables will increase and may cause leakage current. It will activate the protection of over current, increase leakage current or not insure the correction of current display. The worst case is that AC motor drive may damage.

„If more than one motor is connected to the AC motor drive, the total wiring length is the sum of the wiring length from AC motor drive to each motor.

B.9.1 Dimensions

Dimensions are in millimeter and (inch)

B-38 Revision Nov. 2008, VLE1, SW V1.03