2.7 Thermal consideration
- 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.
2.8 U General instructions and precautions
- Never connect SCR low frequency chopper with ASYNCHRONOUS
INVERTER because the ASYNCHRONOUS filter capacitors alter the SCR
choppers' work. If it is necessary to use two or more control units (traction +
lift. for ex.), they must belong to the ZAPIMOS family.
- Do not connect the inverter to a battery with a nominal value different from
the value indicated on the controller plate. If the battery value is greater, the
power section may fail; if it is lower, the control unit does not "power up".
- During battery charge, disconnect ASYNCHRONOUS from the battery.
- Supply the ASYNCHRONOUS only with battery for traction; do not use a
power supply.
- When the controller is installed, make tests with the wheels raised from the
ground, in order to avoid dangerous situations due to connection errors.
- After the controller is switched off (key off), the filter capacitor remains
charged for some minutes; if you need to work on the inverter, discharge
them using a 10 ÷ 100 ohm resistance connected from the +Batt to the -Batt.
2.9 U Susceptibility and electromagnetic emission
Electromagnetic susceptibility and emission are strongly influenced by the
installation. Special attention must be given to the lengths and the paths of the
electric connections and the shields.
This situation is beyond ZAPI's control. Therefore ZAPI declines any
responsibility for non-compliance if correct testing is not made (the irradiated
emission directive is EN50081-2).
2.10 Main contactor and emergency switch
- The connection of the battery line switches must be carried out following
ZAPI instructions.
- If a mechanical battery line switch is installed, it is necessary that the key
supply to the inverter is open together with power battery line; if not, the
inverter may be damaged if the switch is opened during a regenerative
braking.
Page - 10/64 ADEZP0AE - AC-2 INVERTER - User Manual
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