Installation; Connection Cables; Contactor; Fuses - Zapi SEM1 User Manual

Install the chopper with the base-plate on a flat metallic surface that is clean and
unpainted. Apply a light layer of thermo-conductive grease between the two surfaces in
order to allow better heat dissipation.
Ensure that the wiring of the cable terminals and connectors is carried out correctly.
Fit transient suppression devices to the horn, solenoid valves, and contactors not con-
nected to the chopper such as those for activating the pump motor or steering motor.
For the auxiliary circuits, use cables of 0.5mm² section.
For power connections to the motor and to the battery, use cables having section
of 16 mm².
For the field winding connections use cable with a 4mm² section.
In order improve the chopper performance, the battery cables must be as short as
possible and near each other.
The general contactor is installed on the chopper. Use a contactor the same voltage as
the battery. The current coil must be lower than 3A. The coil transient suppression is
integrated the chopper
- In order to protect the auxiliary circuits, use a 6.3A fuse.
- In order to protect the power unit see the diagram. Values shown are the maximum
allowable; for special applications or requirements these values can be reduced. For
safety reasons, we recommend the use of protected fuses in order to prevent the
spread of particles in event of a blowout.
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3 INSTALLATION

3.1 CONNECTION CABLES

3.2 CONTACTOR

3.3 FUSES

SEM1