Zapi COMBIACX, Руководство пользователя

Страница: 12 / 81

Page - 12/81 AFCZP0BC- COMBIACX & ACEX - User Manual
4.1.3 Fuses
- Use a 6.3-10A Fuse for protection of the auxiliary circuits.
- For protection of the power unit, refer to chapter 13 (Recommended spare parts
for inverter). The Fuse value shown is 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 fused particles should the fuse blow.
4.2 Installation of the hardware
U
Before doing any operation, ensure that the battery is disconnected and when
all the installation is completed start the machine with the drive wheels raised
from the floor to ensure that any installation error do not compromise safety.
After operation, even with the Key Switch open, the internal capacitors may
remain charged for some time. For safe operation, we recommend that the
battery is disconnected, and a short circuit is made between Battery Positive
and Battery Negative power terminals of the chopper using a Resistor
between 10 Ohm and 100 Ohm. Minimum 5 Watts.
4.2.1 Positioning and cooling of the controller
CONTROLLER WITH BASE PLATE
: Install the controller with the base-plate on a
flat metallic surface that is clean and unpainted; suggested characteristics are:
planarity 0.05 mm and rugosity 1.6 µm
-
Apply a light layer of thermo-conductive grease between the two surfaces to
permit better heat dissipation.
- The heat generated by the power block must be dissipated. For this to be
possible, the compartment must be ventilated and the heat sink materials
ample.
- The heat sink material and system should be sized on the performance
requirement of the machine. Abnormal ambient air temperatures should be
considered. In situations where either ventilation is poor, or heat exchange is
difficult, forced air ventilation should be used.
- The thermal energy dissipated by the power block module varies and is
dependent on the current drawn and the duty cycle.
CONTROLLER WITH FINNED HEATSINK
: Sometimes the base plate installation
cannot be adopted. Due to positioning problems or to the lack of a thick enough
truck frame, it is necessary to adopt a finned dissipation combined with one or more
fans.
-
The air flux should hit the fins directly, to maximize the cooling effect.
- In addition to fans, also air ducting systems can be used to maintain low the
temperature of the controller.
- It is necessary to ensure that cold air is taken from outside the controller
compartment and hot air is easily pushed away from the controller
compartment.
- It is mandatory to avoid that the cooling air is recirculated inside the controller
compartment.
4.2.2 Wirings: power cables
- The power cables length must be as short as possible to minimize power
losses.