Videotec ULISSE - Manual (Page 10)

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tions manual
8
• The unit has been made for connection using a
3-pole cable. To make a correct connection to
the earth circuit, follow the instructions in this
handbook.
• Before any technical work, always disconnect the
power supply; handle the device with great care:
high mechanical stress could damage the unit.
• Make especially sure that the power supply line is
isolated at a sufficient distance from all the other
cables, including lightning protection devices.
• The main switch must be easily accessible for rapid
intervention when needed.
• Installation category (also called Overvoltage
Category) specifies the level of mains voltage
surges that the equipment will be subjected to.
The category depends upon the location of the
equipment, and on any external surge protection
provided. Equipment in an industrial environment,
directly connected to major feeders/short branch
circuits, is subjected to Installation Category III. If
this is the case, a reduction to Installation Category
II is required. This can be achieved by use of an
isolating transformer with an earthed screen
between primary and secondary, or by fitting
listed Surge Protective Devices (SPDs) from live
to neutral and from neutral to earth. Listed SPDs
shall be designed for repeated limiting of transient
voltage surges, suitable rated for operating voltage
and designated as follows: Type 2 (Permanently
connected SPDs intended for installation on the
load side of the service equipment overcurrent
device); Nominal Discharge Current (In) 20kA min.
For example: FERRAZ SHAWMUT, STT2240SPG-CN,
STT2BL240SPG-CN rated 120/240Vac, (In=20kA).
• Use only original spare parts. Not original spare
parts could cause fire, electrical discharge or other
hazards.
• Before proceeding with installation check the
supplied material to make sure it corresponds
to the order specification by examining the
identification labels ("4.2 Product markings",
page 9).
• Connect the device to a power source
corresponding to the indications given on the
marking label. Before proceeding with installation
make sure that the power line is properly isolated.
For devices powered at 24Vac the supply voltage
should never exceed the (+/-10%) limit.
• Use a Class 2 listed UL tranformer, compliant with
the Standards in force, only for products marked
UL, powered at 24Vac.
• The device has been designed for permanent
installation in a building or other suitable structure.
• The device should be mounted so that it is
accessible only to the technician/installer because
the moving parts constitute a residual risk of injury
caused by movement of said parts.
• Attach the Dangerous Moving Parts (Fig. 07,
page 11) label near the device.
• Do not use the appliance in the presence of
inflammable substances.
• Do not allow children or unauthorised people to
use the appliance.
• The appliance should only be considered switched
off when the power supply has been disconnected
and the connecting cables to other devices have
been removed.
• Only skilled personnel should carry out
maintenance on the device. When carrying out
maintenance, the operator is exposed to the risk of
electrocution and other hazards.
• Use only the accessories indicated by the
manufacturer. Any change that has not been
expressly approved by the manufacturer will
invalidate the guarantee.
• Connect the coaxial cable to earth.
• Before connecting all the cables make sure the
device is properly connected to the earth circuit.
• If the device has to be removed from the
installation, always disconnect the earth cable last.
• Take all necessary precautions to prevent the
apparatus from being damaged by electrostatic
discharge.