Earthing (Grounding) the Device

The procedure below describes how to ground the device.

Protective Earthing

This equipment is classified as Class I according to EN 62368-1 and UL 62368-1 and must be earthed at all times (using an equipment-earthing conductor).

Finland: "Laite on liltettava suojamaadoituskoskettimilla varustettuun pistorasiaan."

Norway: "Apparatet rna tilkoples jordet stikkontakt."

Sweden: "Apparaten skall anslutas till jordat uttag."

Grounding and Power Surge Protection

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The device must be installed only in telecommunication sites / centers in compliance with ETS 300-253 requirements "Earthing and Bonding of Telecommunication Equipment in Telecommunication Centers".

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Prior to installation, earth loop impedance test must be performed by a certified electrician to ensure grounding suitability at the power outlet intended to feed the unit. It is essential that the impedance will be kept below 0.5 ohms!

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Proper grounding is crucial to ensure the effectiveness of the lightning protection, connect the device permanently to ground (as described in this section). The device's grounding screw must be connected to the equipotential grounding bus bar located in the Telecommunication rack or installation site, using a wire of 6 mm² surface wire. If the device is installed in a rack with other equipment, the rack must be connected to the equipotential grounding bus bar of the Telecommunication room, using a stranded cable with surface area of 25 mm². The length of this cable must be as short as possible (no longer than 3 meters).

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To ground the device:

Connect an electrically earthed strap of 16-AWG wire (minimum) to the chassis' ground lug screw (located on the rear panel).

Grounding the DC-Powered Device

Grounding the AC-Powered Device

Connect the other end of the strap to protective earthing. This should be in accordance with the regulations enforced in the country in which the device is installed.