Safeline Sureline DOV707H, Instruction Manual

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LED (H) Range
14
Protection against permanent and transient low voltage
In the event of a permanent or transient low voltage of a value inferior to that programmed (cf. technical characteristics),
the unit engineers a very high-speed cut-off via the tripping coil and the motor-drive. Whilst there exists a low voltage, the
unit will not reset.
Protection against tripping of the MCB
The SURELINE unit is equipped with an Automatic Sequential Reset of the ancillary MCB (2 or 3 depending on version).
Should this act, please refer to technical characteristics.
Protection against cut-off of the RCD
The SURELINE unit is equipped with an Automatic Sequential Reset of the RCD (6 or 10 depending on version). Should
this act, please refer to technical characteristics.
CHAPTER 4 - Cut-off. Tripping times.
Depending on the model and brand of MCB and coil used, should the protection come into play, cut-off of the 2-pole
ancillary MCB is effected in the following typical times.
- between 2ms and 3ms, 2 ms models
- between 5ms and 6ms, 5 ms models
-
between 8ms and 9ms, 8 ms models
Available upon request, measurement protocol and also the corresponding graphs for the cut-off times of the
different models and makes of MCB’s and tripping coils.
Total cut-off time of the MCB
In order to calculate the total cut-off time in the event of protection acting, the additional programmed delay time of the
alarm must be added to that shown on the graphs (typical cut-off time between 2ms and 3ms). Moreover, one must also
bear in mind the ionisation effect at the moment of disconnection between the contacts of the ancillary cut-off element
(MCB). Even though the starting point of the extinction of the intensity does not vary, the ionisation does prolong the
duration. The factors which increase this time are directly proportional to the intensity and the voltage as well as the nature
of the load (inductive, capacitive and resistive).
CHAPTER 5 - Mode of Use
Given the automatic nature of its diverse protections, after having read and fully understood the present manual and having
started up the unit, the user may then proceed to connect up the elements of consumption to the protected line and the unit
will operate as described in CHAPTERS 2 and 3.
Before using the unit, the complete Protection Test must be carried out. If the unit is to be put to permanent use, testing
must be done as a matter of routine. Once the test has been completed, should the results not be correct, the unit must not
be used under any circumstance whatsoever. The Authorised Technical Service must be contacted at once.
Should the user wish to disconnect the line and the unit, the circuit-breaker switch at the main switchboard may be
tripped manually (upstream).

It must be borne in mind that the unit resets the ancillary MCB 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).
REMOTE CONTROL
The REMOTE IN and OUT terminals are an invaluable tool which provide characteristics such as: MULTIPOWER,
MULTICOMBINATION and INTERACTION with other elements whether these be part of the SURELINE range or others.
They provide the user with a modular expansion architecture. If one connects the REMOTE OUT of module A to the
REMOTE IN of module B, the former controls and governs the latter. If the connection is made inversely, then module B
controls module A. If one connects the OUT and the IN of A to the IN and OUT respectively of B, an interaction is
obtained.
The REMOTE also enables the SURELINE modules to be governed by programmable automats, by computers or by other
means. Likewise, it permits incidents to be recorded in the computer.
Another outstanding aspect of the SURELINE philosophy is the possibility of providing an installation with peerless levels of
protection without the installation itself having to be modified nor elements substituted despite their being the customary
ones. The SURELINE philosophy is based on the simple annexing of protection characteristics in the form of the pertinent
SURELINE modules in order to meet any present or future need which may arise.