3.2.2. Incoming Power Connection
Cable Selection
For 1 phase supply, the mains power cables should be connected to L1/L, L2/N.
For 3 phase supplies, the mains power cables should be connected to L1, L2, and L3. Phase sequence is not important.
T he cables should be dimensioned according to any local codes or regulations. Maximum dimensions are given in section
6. 1 . Detailed Product Rating Tables on page 21.
Protective Earth Conductor
T he cross-sectional area of the PE Conductor must be at least equal to that of the incoming supply conductor and connected
to the drives main earth terminal..
Fuse / Circuit Breaker Selection
S uitable fuses to provide wiring protection of the input power cable should be installed in the incoming supply line,
according to the data in section 6. 1 . Detailed Product Rating Tables on page 21. The fuses must comply with any local
codes or regulations in place. In general, type gG (IEC 60269) or UL type J fuses are suitable; however in some cases
type aR fuses may be required. The operating time of the fuses must be below 0.5 seconds. All 400 Volt drives should be
protected with fast acting fuses of the type L70QS035 by Littlefuse for UL compliance.
W here allowed by local regulations, suitably dimensioned type B MCB circuit breakers of equivalent rating may be utilised
in place of fuses, providing that the clearing capacity is sufficient for the installation.
The maximum permissible short circuit current at the Optidrive Power terminals as defined in IEC60439-1 is 100kA.
Motor Connection
T he motor should be connected to the Optidrive U, V, and W terminals using a suitable 3 or 4 core cable. Where a 3 core
cable is utilised, with the shield operating as an earth conductor, the shield must have a cross sectional area at least equal
to the phase conductors when they are made from the same material. Where a 4 core cable is utilised, the earth conductor
must be of at least equal cross sectional area and manufactured from the same material as the phase conductors.
The motor earth must be connected to one of the Optidrive earth terminals.
Maximum permitted motor cable length for all models: 10 metres shielded, 20 metres unshielded.
Power Connections
230V Single Phase Variants
www.invertekdrives.com
400V 3-Phase Variants
Version 1.00 | Coolvert Quick Start User Guide | 13
STATUS 1
STATUS 1
STATUS 1
STATUS 2
STATUS 2
STATUS 2
1 2 3
1 2 3
1 2 3
4 5 6 7 8 9
4 5 6 7 8 9
4 5 6 7 8 9
10 11
10 11
10 11
EMC
EMC
EMC
L1 L2 L3
U
V
L1 L2 L3
L1 L2 L3
U
U
V
V
W
W
W
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