Videotec COMB Manuel D'instructions page 9

INFO
Description of system specifications.
We recommend reading this part carefully
in order to understand the subsequent
stages.
• For handling there are no particular instructions.
It is recommended, to assigned staff, to carry out
operation observing the common rules of accident
prevention.
• Make sure that all precautions for personal safety
have been taken.
• Before proceeding with installation, check the
supplied material to make sure it corresponds
to the order specification by examining the
identification labels (4.4 Product marking label,
page 9).
• The equipment is intended for installation in a
Restricted Access Area by specialist technical staff.
• Since the user is responsible for choosing the
surface to which the unit is to be anchored, we
do not supply the fixing devices for attaching the
unit firmly to the particular surface. The installer is
responsible for choosing fixing devices suitable for
the specific purpose on hand. Use methods and
materials capable of supporting at least 4 times the
weight of the device.
MNVCCOMB_2131_EN
• 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 surge voltage 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 insulating transformer with an earthed
screen between primary and secondary windings,
or by fitting UL 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 and the
following rated operation conditions: Type 2 (SPDs
permanently connected to the power network and
intended for installation on the load side of the
service equipment); Nominal Discharge Current
(In) 20kA min. For example: FERRAZ SHAWMUT,
STT2240SPG-CN, STT2BL240SPG-CN rated
120Vac/240Vac, (In=20kA). Maximum distance
between installation and reduction is 5m.
• To comply with the main supply voltage dips and
short interruption requirements, use a suitable
Uninterruptible Power Supply (UPS) to power the
unit.
• The manufacturer declines all responsibility
for any damage caused by an improper use
of the appliances mentioned in this manual.
Furthermore, the manufacturer reserves the right
to modify its contents without any prior notice.
The documentation contained in this manual has
been collected and verified with great care. The
manufacturer, however, cannot take any liability
for its use. The same thing can be said for any
person or company involved in the creation and
production of this manual.
7