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| Optidrive ODP-2 Solar Pump User Guide |
Version 2.04
www.invertekdrives.com
4.3.2. Cable Selection
For 1 phase ac supply, power should be connected to L1/L, L2/N.
For a DC Supply, the main power cables should be connected to L1/L, L2/N.
For 3 phase ac supplies, the mains power cables should be connected to L1, L2, and L3. Phase sequence is not important. Neutral
connection is not required.
For compliance with CE and C Tick EMC requirements, refer to section
4.10. EMC Compliant Installation
A fixed installation is required according to IEC61800-5-1 with a suitable disconnecting device installed between the Optidrive
and the main Power Source. The disconnecting device must conform to the local safety code / regulations (e.g. within Europe,
EN60204-1, Safety of machinery).
The cables should be dimensioned according to any local codes or regulations. Maximum dimensions for each drive model are
given in section
11.2. Output Power and Current ratings on page 65
.
4.3.3. Fuse / Circuit Breaker Selection
Suitable fuses to provide wiring protection of the input power cable should be installed in the incoming supply line, according to
the data in section
11.2. Output Power and Current ratings on page 65
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.
Where 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.
The Optidrive provides thermal and short circuit protection for the connected motor and motor cable.
4.4. Motor Connection
The drive inherently produces fast switching of the output voltage (PWM) to the motor compared to the mains supply, for motors
which have been wound for operation with a variable speed drive then there is no preventative measures required, however if the
quality of insulation is unknown then the motor manufacturer should be consulted and preventative measures may be required.
The 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 to provide a low impedance path for common mode
leakage current to return to the drive. This is best achieved in practice by using a cable with suitable shielding which provides a low
impedance path at high frequencies, and ensuring correct, low impedance earth bonding of the motor cable at both ends. For further
information, refer to section
4.10. EMC Compliant Installation
4.5. Motor Terminal Box Connections
Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor. This
operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives
the higher of the two voltage ratings.
Incoming Supply Voltage
Motor Nameplate Voltages
Connection
230
230 / 400
Delta
400
400 / 690
400
230 / 400
Star
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Elec
trical Installation
