KEB COMBIVERT F6 Instruction Manual

GB - 30
Connection Power Unit
2.7.2 Selection of the motor cable
Correct selection and wiring of the motor cable is very important:
• lower abrasion of the motor bearings by leakage currents
• improved EMC characteristics
• lower symmetrical operating capacities
• less losses by transient currents
Picture
2.7.2
Cross section of a shielded motor cable with tripartited protective earth con-
ductor
PE
PE
PE
VU
W
It is recommended to use symmetric shielded motor cables at
high motor ratings (>30 kW). At these cables the protective earth
conductor is tripartited and uniformly placed between the phase
lines.
A cable without protective earth conductor can be used if the
local regulations allow this. Then this protective earth conductor
must be placed externally. Certain cables accept also the shield-
ing as protective earth conductor.
Pay attention to the data of the cable manufacturer!
2.7.3 Connection of the motor
As a standard the connection of the motor must be carried out in accordance with the follow-
ing table:
Connection of the motor
230/400 V motor 400/690 V motor
230 V 400 V 400 V 690 V
Delta Star Delta Star
Motor connection in star connection Motor connection in delta connection
U1 V1 W1
W2 U2 V2
PE
3
U1 V1 W1
W2 U2 V2
PE
3
The connecting-up instructions of the motor manufacturer are generally valid !
Protect motor
against voltage
peaks !
Inverter switch at the output with a du/dt of approx. 5kV/µs.
Voltage peaks that endanger the insulation system at the
motor can occur especially in case of long motor cables (>
15m).Amotorchoke,adu/dtlterorsine-waveltercanbe
used to protect the motor.

KEB COMBIVERT F6 Specifications

General

Brand	KEB
Model	COMBIVERT F6
Category	Controller
Language	English