Connections; Electrical Connections; Figure 3: Removing The Cover To Access The Connections; Figure 4: Electrical Connections - DWT WaCS PWM Serie Instrucciones De Instalación Y Mantenimiento

2.2 Connections

All the electrical connections are accessible by removing the screw on the cover, as shown in Figure 3.
Before performing any installation or maintenance operation, disconnect the inverter from the
electrical mains and wait for at least 15 minutes before touching internal parts.
Ensure that the voltage and frequency values on the inverter data plate correspond to those of
the power mains.
2.2.1

Electrical connections

To improve the immunity to any noise radiated towards other equipment we recommend using separate
ducts for the inverter supply cables.
The installer shall be responsible for checking that the electric power supply system is fitted with an efficient
earthing system according to the regulations in force.
CAUTION: The line voltage may change when the electrical pump is started up by the inverter.
The voltage may be subject to variations according to other devices connected, and the quality of the line.
2.2.1.1 Connection to the power line PWM 203 – 202 – 201
The inverter must be connected to the single-phase power line by means of a 3-core cable (phase neutral +
earth). The relative line specifications must correspond to those shown in Table 1.
The input terminals are those marked with the text LN and an arrow pointing towards the terminals; see
Figure 4.
ENGLISH

Figure 3: Removing the cover to access the connections

Figure 4: Electrical connections

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