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INSTALLATION
24
| MVE User Manual (710-17074-00G)
Transient/ Overvoltage Protection
Overvoltage protection should be installed if there is a risk of high voltage transients at the installation. Contact your local supplier
for details.
Line Inductors
Output line inductors may be required depending on various factors, including the soft starter model, the system operating voltage,
the cable type, and the length of the cable run between the soft starter and the motor.
If required, line inductors are typically installed in a shielded caged enclosure at the soft starter end of the motor cable.
To find out if line inductors are required for your specific installation, contact your local supplier for advice. You will need to provide
information about the motor output cable, including the cable length and its capacitance per km.
Power Circuit Configuration
MVE power circuit with main contactor, bypass contactor, main isolator/ earth switch, R Rated fuses and current transformers.
MVE must be installed with backup/R-rated fuses.
L1
T1
P1
P2
S1
S2
P1
P2
P1
P2
S1
S2
S1
S2
L2
T2
L3
T3
L1
L2
L3
E
T1
T2
T3
K2
L3
L2
L1
T3
T2
T1
A1-1
A1-2
A1-3
K1
M
3
U1
V1
W1
F1
1
2
F2
1
2
F3
1
2
QM
L1A
L3A
T1
T2
T3
L1B
L2B
L3B
18050.
B
L2A
L3
L2
L1
T3
T2
T1
CT3
CT2
CT1
2
1
3
4
5
6
7
1
Soft starter panel
L1-L3
Input power terminals (supply side)
A1-1 ~ A1-3
Phase arms 1 ~ 3
T1-T3
Output power terminals (motor side)
2
Current transformers (refer to
Internal
Panel Wiring
on page 27)
7
Fuses (F1-3)
3
Motor cables
K1
Main contactor
4
Three-phase supply
K2
Bypass contactor
5
Supply cables
6
Panel earth bar
QM
Main isolator / Earth switch
disconnector