Videotec UPTIRPS Manuel D'instructions page 4

• 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
insulating 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 120Vac/240Vac,
(In=20kA). Maximum distance between installation
and reduction is 5m.
• This device was designed to be permanently
installed on a building or on a suitable structure.
The device must be installed permanently before
any operation.
2
• When installing the device, comply with all the
national standards.
• A disconnecting device, readily and easily
accessible, must be incorporated in the electrical
system of the building for rapid intervention.
• The separate protective earthing terminal provided
on this product shall be permanently connected
to earth.
• For continued protection against risk of fire,
replace only with same type and rating of fuse.
Fuses must be replaced only by service personnel.
• CAUTION! The electrical system to which the
unit is connected must be equipped with a 20A
max automatic bipolar circuit breaker. This circuit
breaker must be of the Listed type. The minimum
distance between the contacts must be 3mm
(0.1in). The circuit breaker must be provided
with protection against the fault current towards
the ground (differential) and the overcurrent
(magnetothermal).
• Equipment intended for installation in Restricted
Access Location to trained personnel only.
MNVKUPTPSUL_1423_EN