4.3.5 Mains Connection - Ground Connection
4.3.5.1 OXO Connect Small, Medium, Large
The connection can be made using electrical installations of the following type:
• TT (local ground for each piece of equipment).
• TN (common ground for all equipment).
• IT with inter-phase voltage of 230 V; only possible in Norway.
Mains socket fuse: T2.5 AH / 250 V (delayed action, high cutout).
So as not to compromise the fire protection feature, replace fuses with the same type of
fuse having the same nominal characteristics.
For continued protection against risk of fire, replace only with same type and rating of
fuse.
The system is delivered with a 3 conductor cable (length: 3 m) to connect to the mains socket.
4.3.5.1.1 Permanent Ground
It is essential to connect the system permanently to ground due to leakage currents greater than 3.5
mA over the whole line access (safety constraint CEI60950 ed.03). To do this, use the ground wire of
minimum section 4 mm
2
provided and connect it to the tag at the rear of the unit (left hand side).
For performance and safety reasons, the system must always be connected to the
ground. The ground must be connected prior to all the other connections.
For performance and safety reasons, the whole system must always be coupled to the
ground. The ground must be connected before any other connections.
The ground protection connection terminal must always be connected to the ground.
Protective grounding terminal shall be permanently connected to the ground.
4.3.5.2 OXO Connect Compact
OXO Connect Compact platform is powered by an external power supply unit (100/240V). It is
connected via a jack plug at the front of the module (right hand side).
Remarks:
- A mains cable is not supplied with the module. It must be ordered separately.
- For a more secure configuration, an AC/DC power supply, including a backup battery, can be purchased as an
optional extra.
4.3.5.2.1 Permanent Ground
It is essential to connect the system permanently to ground due to leakage currents greater than 3.5
mA over the whole line access (safety constraint CEI60950 ed.03).
To do this, use the ground wire of minimum section 2.5 mm
2
(not supplied) and connect it to the tag on
the metal bottom of the unit (right hand side).
For performance and safety reasons, the system must always be connected to the
ground. The ground must be connected prior to all the other connections.
Chapter
4
Installation and Cabling
3EH21123USAA - Ed. 01 - April 2017 - Installation Manual 72/207
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