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4.3.4.Connection main protective earthing

terminal () and protective earth bonding terminal ()

As this is a device with class I protection against electric shocks, it is essential to install a protective earth conductor (connect earth ()). Connect the conductor to the terminal (X5), before connecting the power supply to the UPS input.

Make sure that all the loads connected to the UPS are only connected to the protective earth bonding terminal (). By not restricting the earthing of the load or loads and/or the batteries case/s or cabinet/s to this single point, can lead to ground loops which can affect operational safety.

All of the terminals identified as protective earth bonding (), are joined together, to the main protective earthing terminal () and to the frame of the device.

Fig.20:  Connection example between a UPS and two battery cabinets

4.3.5. Interface relay contacts, connector (X32)

The remote signal lines operate over low voltage. To ensure safe and problem free communication, install at a safe distance from the power supply lines to the UPS. The built in relays provide a digital signal over a potential free contact.

The permissible contact load is 6 A 30 VDC or 6 A 100 VAC. Supplemental to the DB9 connector you will find parallel screw terminals on the communication board. Remote signaling operates over fiver output relays (one is adjustable), the

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AEG 2.33 2 user manual Interface relay contacts, connector, Connection example between a UPS and two battery cabinets

2.33 2 specifications

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