Salicru SLC TWIN series, User Manual, Page: 47 / 61

14
Tierra
entrada
Tierra salida
Neutro salida
Neutro
entrada
Línea entrada A (R)
Línea entrada B (S)
Línea entrada C (T)
Salida
Batería –
Batería +
Input and output terminal strip for SLC-15000-TWIN/3 fig. 11.
(B1) / SLC-12000-TWIN/3 (B1) / SLC-20000-TWIN/3
(B1)
i
If the UPS is set on single mode, JP1 and JP2 have to be con-
nected. If the UPS is set on parallel mode, the bridge between
JP1 and JP2 have to be removed.
4.5. PROCEDURE TO CONNECT ThE MODELS
WITh EXTERNAL BATTERIES fOR EXTENDED
AUTONOMIES.
The DC nominal voltage of the external battery module is 240 1.
Vdc. Each battery string has 20 maintenance free blocks of 12
V connected in serial. To achieve a higher autonomy time, addi-
tional battery modules can be connected, but always checking
that they have the «same voltage and same type».
For SLC-4000-TWIN (B1) / SLC-5000-TWIN (B1) / SLC-6000- 2.
TWIN (B1) / SLC-8000-TWIN (B1) / SLC-8000-TWIN/3 (B1) / SLC-
10000-TWIN (B1) / SLC-10000-TWIN/3 (B1) models, the external
battery connector is used for, one side, to connect to the external
battery connector of the UPS, and the other side has an Anderson
and jack connector to connect it to the external battery module
connector; for SLC-12000-TWIN/3 (B1) / SLC-15000-TWIN/3
(B1) and SLC-20000-TWIN/3 (B1) models, select the cable type
UL1015 6AWG (25mm2) or any insulated one that complies with
the AWG standard for the UPS battery wiring.
Risk of electrocution. Always connect the cable end
first going to the UPS and then the cable end going
to the battery cabinet.
4.6. PARALLEL (NOT fOR MODELS IN RACk 19’’).
4.6.1. Brief introduction to the redundancy.
N+x is usually the most reliable power structure. N means the
minimum number of UPSs that the total load needs; x means the
number of redundant UPSs, which means, the number of faulty
UPSs that the system can allow simultaneously. The higher is x,
the higher will be the reliability of the system. For those occasions
where the reliability is the essential, N+x is the optimal mode.
If the UPS has the parallel cables, up to 3 UPSs can be connected in
parallel to configure a sharing and redundant output power.
4.6.2. Parallel installation.
Use the supplied cable of 25 pins, with 25 wires, cable on Y 1.
and shielded, like the UPS parallel cable. The length of the par-
allel cable is 3 metres as maximum.
Follow the UPS requirement for the input wiring strictly. 2.
Connect the output cables of each UPS to an output panel with 3.
circuit breaker.
Disconnect the bridge between JP1 and JP2 from the terminal 4.
strip, and connect each output breaker to the general output
breaker and then to the loads.
The output wiring requirement is as follows:
When the distance among the UPSs in parallel and the circuit •
breaker panel is lower than 20 metres, the length difference be-
tween the input and output cables of the UPSs has to be lower
than 20%.
When the distance among the UPSs in parallel and the circuit
•
breaker panel is higher than 20 metres, the length difference
between the input and output cables of the UPSs has to be
lower than 10%.
4.6.3. Operating and maintenance.
For normal operating, follow the single operating requirement. 1.
Start up: the units transfer to INV mode simultaneously keeping 2.
the start up Line mode sequence.
Shutdown: The units are shutdown on INV mode in a sequent 3.
way. When the last one is shutdown, each unit will turn off the
inverter simultaneously and will transfer to bypass.
It is easy to handle the equipment, even without previous training.
It is important to read this manual and to operate according to its
instructions.
Input panel
Output panel
Loads
Circuit diagram for input and output panels with parallel fig. 12.
operating.
USER MANUAL