DAB MCE-55/P Installations- Und Wartungsanleitungen Seite 68

Table 3 also indicates the sizes of thermal magnetic circuit breakers to be used, according to the current
absorption.
CAUTION: The thermal magnetic circuit breaker and power cables of the inverter and pump must be sized
according to the system.
The differential switch that protects the system must be adequately sized and must be of "Class AS" type.
The automatic differntial switch must be marked with the following two symbols:
If the instructions supplied in this manual are in contrast with the regulations in force the regulations must be
considered as valid.
The earth connection must have tightened cable lugs as shown in Figure 3
2.2.1.2 Electrical connections to the pump
The connection between the inverter and the electropump must be made with a 4-core cable (3 phases +
earth). The characteristics of the connected electropump must be able to satisfy the indications in Table 1.
The output terminals are those marked with the text UVW and an arrow pointing away from the terminals;
see Figure 2.
The section, type and laying of the cables for connection to the electropump must be chosen according to
the regulations in force. Table 2 supplies an indication on the section of the cable to be used. The table
refers to 4-core PVC cables (3 phases + earth) and gives the recommended minimum section with relation to
the current and the length of the cable.
The electropump current is generally specified on the motor data plate.
The rated voltage of the electric pump must be the same as the supply voltage of the inverter.
The rated frequency of the electric pump can be set via the display according to the specifications on the
manufacturer's dataplate.
For example, the inverter can also be powered at 50 [Hz] with control of an electric pump at 60 [Hz] -
nominal (provided that the pump is declared as compatible for this frequency).
For special applications, pumps are also available with frequency up to 200 [Hz].
The utility connected to the inverter must not absorb current in excess of the maximum values specified in
Table 1.
Check the dataplates and type of motor connection (star or delta) used to ensure compliance with the above
conditions.
Incorrect connection of the earthing line, to a terminal other than the earth terminal can
cause irremediable damage to the equipment.
Incorrect connection of the power line on the output load terminals can cause irremediable
damage to the equipment.
ENGLISH
Figure 3: Connection of the earth cable
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