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disconnect a frequency converter from power supply. User is obliged to fulfill this requirement.
Casing
The casing conforms to the requirements of a IP20 protection degree. The surface, on which the control panel
is situated fulfills the requirements of a IP40 protection degree. The casing was designed in such a manner that it
cannot be removed without usage of tools.
Capacitors discharging
In a DC link circuit of a frequency converter there is a capacitor battery with relatively high capacity. After
turning off of a supply voltage in its clamps dangerous voltage is present for a certain time. It is necessary to wait for 5
minutes before making connections on clamps of power terminal strip of a frequency converter. The information about
danger of such voltage is placed also on terminal strip cover.
The AFC150 converter is fed from the one-phase supply line 1x230V. In the fig. 2.1 the scheme of power
circuits connections is presented. Diameters of wires and the parameters of chokes should be selected depending on
current of a load. 2.1. The frequency converter is supplied with appropriate resources, protected from corrosion,
dedicated to make apropriate connections. Additional information about external connections can be found in section
2.1.1 under the “Equipotential connections” and in section 2.1.2. In order to comply with EU directives of
electromagnetic compability (EMC) application of a four-wire shielded cable (three phases + earth wire) is
recommended to fed the engine. Type of mains choke and protections is available at producer's representative. It is
strogly recommended not to use any switches or contactors at the converter output that could disconnect system
during the run.