Salicru EMi3 M 5-2 Manuel D'utilisateur page 62

Manual or Automatic rearming of the Maximum-minimum
3.
protection (by default Automatic mode).
The Maximum-minimum protection window is defined by the
range, which are the particular ones for this operating.
4.7.2.1. Manual/Automatic operating.
Manual.
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When the equipment exceeds the preset range, depending on
the maximum-minimum contactor configuration, it will break the
output or input voltage. Whereas the voltage is restored inside the
preset range, the stabilizer will not supply output voltage, because
the contactor must be rearmed manually by selecting "YES" in the
screen 2.2 from "manoeuvring" submenu (see Fig 19 and/or20).
Automatic.
•
The system will supply output voltage meanwhile the
voltage is inside the preset range, otherwise the output
will be broken. The stabilizer will shift from one condition
to the other one in an automatic way, without any manual
intervention but with a rearming time delay of 5 sec., by de-
fault, however it can be adjusted to other values at factory.
4.7.3. Bypass Manual.
Manual bypass option consists in a three positions cam switch,
which allows selecting between position «1», where the output
is connected to the input of the stabilizer directly (Bypass) and
position «2» where the output of equipment is connected to
the output of the stabilizer directly. The shifting from one posi-
tion to the other one will always be done with a break, shifting
through the position «0», so it means that the power supply to
the output will not be guaranteed during the switching.
4.7.4. Overload contactor.
This option incorporates the overload contactor and the parts
included in the option of «Measurement of output currents,
powers and overloads» described in section 4.7.1.
The operating of the system is always with manual rearming,
so if the stabilizer senses a current from 100% and 200% of
the nominal, an over current alarm will be triggered and a timer
of 20 sec. will be started. Once the time is elapsed the over-
load contactor will be opened, breaking the power supply at the
output. Then the screen of the LCD panel will display the over-
load alarm. The rearming will be done manually through the
screen «General Rearming» in the manoeuvring menu, although
the end-user will have to disconnect loads from the output of
the stabilizer to guarantee the re-start up. The equipment will
start up normally.
4.7.5. Non-critical loads contactor.
This option incorporates the Non-critical load contactor and the
parts included in the option of «Measurement of output cur-
rents, powers and overload» described in section 4.7.1.
Another of the features of this option is that the stabilizer will
have a double output terminal strip:
Critical Loads output terminals.
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Non-critical Loads output terminals.
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62
The operating of the system is always with manual rearming,
so if the stabilizer senses that the 50% of the nominal load has
been reached, the «Non-Critical Loads Disconnection» alarm
will be triggered and a timer of 20 sec. will be started. Once
the time is elapsed, the «Non-Critical Loads Disconnection»
contactor will be opened, breaking the output power supply
to these loads. The rearming will be done through the screen
«General Rearming» of the manoeuvring menu, although the
end-user will have to disconnect loads from the output of the
stabilizer to guarantee the re-start up. The equipment will start
up normally.
4.7.6. Communication and dry contacts module.
The communication module has several communication ways
with the external environment. In general, it can be said, that
beside of the Slot to insert the SICRES Ethernet communication
card, there are several communication ports and 9 dry contacts
(see user's manual EN030*00).
4.7.7. Budget version of the dry contacts to terminals.
In case the end-user doesn't need so many dry contacts, as an
option there is the possibility to have two dry contacts with the
following setting:
Internal dry contact 1. Output overload or Maximum-min-
•
imum protection.
Internal dry contact 2. General alarm.
•
Stabilizer internal side
C NC NO
Dry contact 1
Fig. 13. Dry contact interface layout.
The switched dry contacts are supplied connected to a terminal
strip as the layout of Fig. 13 shows.
The maximum applicable voltage and current is 250 V AC 6A.
4.7.8. Slot for SICRES Ethernet communication card.
Any stabilizer is supplied with the Slot to fit the SICRES com-
munication option. This card can be fitted in from factory or
later on.
All the information regarding this option is described in the
user's manual EK764*00 supplied with the Pendrive together
with the own SICRES card.
In three phase stabilizers of high power rate consisting of three
single phase equipments, each single phase unit has its own
Slot for the SICRES communication card.
C NC NO
Dry contact 2
SALICRU