Salicru SLC CUBE 4 7.5 kVA Mode D'emploi page 92

4.5.7. Standby mode
By default, when the unit has bypass voltage, the unit powers the
loads via the bypass. This function can be deactivated and the
unit remains in standby mode without powering the loads via the
bypass, and remains in standby mode until the order is given to
start the UPS in online mode.
Fig. 18. UPS power flow in standby mode.
4.6. OPERATION AND CONTROL DEVICES
The operation and control devices allow the UPS user/operator to
carry out the following actions, among others:
Unit start-up.
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Special operations (such as switching to bypass mode).
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Maintenance and repair interventions (maintenance bypass
•
mode).
Monitoring of parameters and measurements "in-situ" via the
•
unit screen (for example: consumption, load percentages, etc.).
Remote monitoring and signalling (external to the UPS):
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Digital inputs corresponding to external switchgear (e.g.
ˆ
external manual bypass).
Activation of UPS operating mode indication relays (e.g.
ˆ
UPS in battery mode indication relay).
RS232/USB communication ports.
ˆ
Communication slot (SNMP, Nimbus, relay extension, ex-
ˆ
tension of functions).
The use of UPS operation and control devices is only in-
tended for authorised staff. It is recommended to check the
training of staff who are responsible for the use and maintenance
of the system.
4.6.1. Switches
The switches arranged in the UPS are used to isolate the unit from
the AC power supply, the storage batteries and the load.
Presence of voltage at unit terminals.
The disconnect switches do not fully isolate the UPS, as
the AC voltage is still present at the UPS input terminals. Before
carrying out any maintenance on the unit, it is necessary to:
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Fully isolate the UPS by opening (disconnecting) the external
•
switches.
Wait for at least 5 minutes to allow the capacitors to discharge.
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The SLC CUBE4 UPS has the following switches:
Rectifier AC input line switch, circuit breaker type (Q1).
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AC bypass line switch, circuit breaker type (Q4).
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Circuit breaker for maintenance bypass (Q5). This switch
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will remain mechanically locked (against activation) during
operation in normal mode.
Output disconnect switch (Q2). It allows the voltage supplied
•
by the UPS to be connected to the loads, or for them to be
isolated if necessary.
For external battery cabinets, fuse holder disconnect switch
•
(F8).
In the case of battery cabinets with a fuse holder dis-
connect switch, disconnection with load is not per-
mitted.
4.6.2. Control panel with touchscreen
The control panel of the UPS is fully integrated into a graphic touch-
screen ("touch panel"). Some of the characteristics of this screen
are as follows:
5" diagonal screen size.
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16:9 aspect ratio.
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Resolution of 800 x 480 pixels.
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65 K colours.
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Capacitive touch sensor.
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