LED (H) Range
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CHAPTER 8
- Maintenance
Before using the unit, the complete Protection Test must be carried out as described in the section “Tests”. If the unit is
to be put to permanent use, testing must be done as a matter of routine.
Once the protection 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. This is also the case in the
event of the eventualities described in the chapter "PRECAUTIONS".
Notwithstanding, on a minimal yearly basis, the user must check that the measurements of the electrical parameters of
the unit coincide with those stipulated in the technical characteristics, To this end, competent technical personnel at the
factory will revise the unit and proceed to calibrate it if need be.
The mechanical endurance of the Schupa 2 and 4P MCB is 20,000 complete manoeuvres (ON/OFF). It is
recommended that the MCB, the tripping coil and the lever be changed pre-emptively after 10,000 manoeuvres.
La mechanical endurance of the General Electric 2P MCB is 20,000 complete manoeuvres (ON/OFF). It is
recommended that the MCB, the tripping coil and the lever be changed pre-emptively after 10,000 manoeuvres.
La mechanical endurance of the General Electric 4P MCB is 15,000 complete manoeuvres (ON/OFF). ). It is
recommended that the MCB, the tripping coil and the lever be changed pre-emptively after 10,000 manoeuvres.
(Please, consult manufacturer regarding electrical endurance of external MCB and accessories).
CHAPTER 9
- Additional options
The new range of protection, metering and registering share the SURELINE philosophy and are extraordinarily versatile.
So much so that they permit multiple configurations thanks to their modular expansion architecture not only with present
and future SURELINE elements but also with others available on the market. Thus, they complement and are
complemented by other characteristics and features regardless of whether or not they are SURELINE's. Please, consult
Safeline.
Protection against intense transient overvoltages of short duration
(nS y
S)
Thanks to its
very high
physical cut-off
speed
and its wide voltage range, which ensure a constant supervision, along
with its
intelligent reclosure
feature, the Sureline units are able to protect a vast gamut of situations. Nevertheless,
there exist certain specific situations where there arise powerful but very brief transient overvoltages (
S). In such a
situation, the Sureline unit should be complemented with a specific protection.
This specific protection against extremely powerful and brief (KV/µS) peaks, is to be found in a module form which
SAFELINE considers particularly apt as well as being complementary to its own modules. The module in question is
based on varistors, surge arresters in this kind of overvoltages.
Despite the varistor-based protection system being efficient solely in the event of transient overvoltages of very brief
duration (
S), it is, nonetheless, the perfect complement for the protections offered by the Sureline unit.
The varistor offers a high derivation capacity along with a rapid response time (<25nS), thus diminishing the high values
of the fore-mentioned transient overvoltages
Summary of Contents for Sureline DOV707H
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