KEB COMBIVERT G6 series, Installation Manual, Page: 18 / 42

GB - 18
Connection of the Power Unit
Size Motor cable (standard) Motor cable (low capacitance)
13
100 m 200 m 14
15
3.2.2.3 Conducted disturbances depending on the motor line length at AC supply
The maximum motor line length is depending on the capacity of the motor cable as well as
on the EMC emitted interference. The following data apply for operation under nominal rating
conditions.
Size
Max. motor line length shielded
max. leakage
current
(at f
N
≤100 Hz)
in accordance with EN 61800-3
Category C1 Category C2
Motor cable
(standard)
Motor cable
(low capaci-
tance)
Motor cable
(standard)
Motor cable
(low capaci-
tance)
13
25 m 50 m 50 m 100 m < 5 mA 14
15
The line length can be extend significant by using motor chokes or filters. KEB recom -
mends the use of motor chokes or filters for a line length upto 50 m. Motor chokes or
filters are absolutely necessary upto 100 m.
3.2.2.4 Motor cable cross-section
Size
Recommended minimum cross section of the motor line for rated power and
a cable length of upto 100 m (copper)
13
3 x 4 mm² Phase + 1 x 4 mm² PE
14
15
3 x 6 mm² Phase + 1 x 6 mm² PE
3.2.2.5 Interconnection of the motor
The connecting-up instructions of the motor manufacturer are always generally va-
lid !
Protect motor
against voltage
peaks !
Inverters switch at the output with du/dt ≤ 5kV/µs. Voltage peaks
that endanger the insulation system at the motor can occur espe-
cially in case of long motor cables (> 15 m).
A motor choke, a dv/dt-filter or sine-wave filter can be used for
protection of the motor.
3.2.2.6 Terminal strip X1B motor connection
Terminal strip X1B Name Function Cross-section Tightening
torque