LED (H) Range
11
PRECAUTIONS / WARNINGS FOR USER / INSTALLER:
Despite this unit's being of maximum safety, both from a design and features standpoint, the utmost care must always
be taken when using it. It must not be used until its characteristics and mode of operation have been fully understood.
Generally speaking, the precautions to be taken with this unit do not differ from those taken with any other piece of
electronic equipment connected to the mains. Nevertheless, special attention should be paid to the following:
It must be borne in mind that the unit resets the ancillary circuit-breaker automatically and this fact could cause injury to
a careless operator or user. In order to avoid this:
all up-stream conductors are to be disconnected. (by means of switches, sectionalisers or others.)
The mission of the ancillary circuit-breaker element is not that of protecting the circuit-breaker, but rather that of acting
as merely as an ancillary switch. The installation should, therefore, be equipped with elements of protection against
over-intensity (i.e. circuit-breakers, fuses, etc...) The wiring of the installation must be foreseen for the maximum
intensity of the protection elements.
Do not apply current nor use the module until it has been correctly installed in a standard enclosure.
Do not connect the unit up to voltages other than 230 V AC ± 25%.
Do not connect up to installations which may supply intensities of over 15 kA or 10 kA (depending on ancillary MCB)
When power supply to the unit is cut off or below minimum (150V AC approx.), o total reset to zero of counters, timers
and conditions is generated.
Terminals A and B of "CONTROL OUT" must not be short-circuited under any circumstance whatsoever. Should this
occur, irreversible damage would be caused to the protection module.
Caution: The unit’s connecting terminals are not insulated from the mains
Do not expose to liquids or humidity.
Do not drop, knock or expose to vibrations..
Do not expose to sources of heat
Do not expose to environmental temperatures below 0
o
, -15
o
C. Or over 40
o
, 50
o
, 70
o
C (depending on version).
Do not expose to magnetic sources or emissions (electric motors and transformers, electro-magnets, etc.).
Under no circumstance whatsoever must the unit be opened and the interior manipulated. The safety seals must
remain intact. Should they be broken, the correct functioning of the unit could be jeopardised.
In the event of any of the above occurring, the authorised technical service must be contacted immediately in order for
the unit to be examined.
The unit must be completely disconnected from the mains before cleaning. This is to be effected with a soft, dry brush
and, if need be, with a slightly damp cloth. The unit must not be reconnected to the mains until having ascertained that
it is completely dry.
WARNING!
This unit must be installed in a standard enclosure, the only part within access of the user being the display and
command panel. Its application is restricted to industrial installations.
Most important
-
Positioning of the toroidal transformer and individualized adjustment to its module
The differential intensity toroidal core is individually matched and adjusted to the corresponding Sureline module.
Therefore, these elements can, under no circumstance whatsoever, be interchanged with others bearing the same
reference and from other Sureline modules. Were this toroidal core to be interchanged, the measurement obtained for
the differential protection would be erroneous and operation would be abnormal. Only the toroidal transformers supplied
for the specific Sureline module can be installed. Each toroidal core indicates the model and serial number of the Sureline
module for which it has been specifically matched and adjusted. The toroidal transformer must of necessity be positioned
as shown in the “Wiring diagrams”, the direction of the arrow indicating the position with respect to the wiring. The
length of the wire connecting the toroidal core to the SURELINE unit must not exceed 30 cms.
- Wiring
It is of the utmost importance that
the correct polarity is ensured upon connection of the SURELINE “L1” and “N”
terminals.
If this polarity is not respected, the high accuracy is lost originating errors in measurement and abnormal
functioning of the protections.
A main risk of the unit not functioning correctly could be originated principally by an incorrect wiring up of the connection
terminals. It is, therefore, of the utmost importance
that this wiring be carried out correctly
in accordance with the
following protocol:
a homologated "male pin" is to be incorporated in the naked core of the stripped pliable conductor.
these terminals are placed in the corresponding grooves as far in as they will go
ensure that the conductor lead is correctly fixed with the pertinent tightening torque, i.e. there must be no
displacement of the terminal nor any damage to the screws on head, thread, fillet or washer, any of which
would be to the subsequent detriment of the assemblies and screw connections.
The user must carry out the complete protection test periodically as is described in CHAPTER 2.
Summary of Contents for Sureline DOV707H
Page 1: ...LED H Range 1 ...
Page 2: ...LED H Range 2 ...
