Salicru SLC CUBE 3+ PS Mode D'emploi page 87

4. PRESENTATION.
The way we use UPS systems today has changed a lot. Technolog-
ical improvements in UPS efficiency, versatility and flexibility have
allowed SALICRU to address non-standard UPS applications, such
as peak shaving and intermediate energy storage. These tech-
niques are in turn related to the fact that UPS systems are capable
of satisfying the demand for integration into Smart Grids.
What is Peak Shaving?
The energy production and distribution infrastructure must be
sized according to the maximum demand. If the maximum demand
is much higher than the average, the networks will have to be over-
sized, so the return on investment for the providers will be higher.
Peak shaving is a set of techniques that aim to keep the demand
curve for electricity as flat as possible throughout the day and
year, by canceling peaks. Our
reduction capacity will interact with the supply network to re-
duce its energy absorption during periods of high energy demand
(load peaks in factories, air conditioners in summer periods, etc.)
In addition, sudden variations in load demand can lead to instability
in grid frequency and voltage, leading to deteriorating grid quality
and, in turn, higher costs for the provider. Therefore, network op-
erators are interested in finding ways to achieve a "shaved curve";
on the other hand, customers who are available to implement a
peak shaving program will generally be granted a discount on their
energy bills.
How does UPS peaks reduction works?
The easiest way for a UPS to reduce the absorption of power spikes
from the mains would be to stop the AC/DC rectifier stage, so that
the aforementioned spikes should be supplied entirely through
the energy stored in the battery. This could result in oversizing
and excessive cycling ot the battery, that is, in a high cost, and a
possible premature aging of the system.
The SLC CUBE3+ PS series goes further, keeping the AC/DC rectifier
running, and getting the battery to take charge of supplying excess
energy that exceeds the level set for the AC mains. That is, rectifier
and battery supply power to the inverter (DC/AC) simultaneously.
The sizing of the battery will be a compromise between the
autonomy needs in the event of a mains failure (classic operation
as UPS), and the needs to reduce consumption peaks, depending
on their magnitude and duration (Peak Shaving operation).
USER'S MANUAL
SLC CUBE3+ PS series with peak
4.1. VIEWS.
4.1.1. Views of the equipment.
Figures from 1 to 20 show the illustrations of the equipments ac-
cording to model, nominal operating voltage and input-output set-
ting, which is summarised in the chart 1.
Format of protections and size of the terminals shown in the figures
of this document, always correspond to the highest power rate
model manufactured in that cabinet, at the same power supply
voltage and input-output setting.
Nevertheless and as the product is in constant evolution, some dis-
crepancies or small contradictions can arise. So, if any questions,
the labels over the own equipment will prevail.
Each equipment model corresponds to one power rate,
voltage, frequency and input and output currents. All values
of these features can be checked in the nameplate, located at the
back of the front door (PF), and act in your installation accordingly.
In the description of this manual, there are references to «LV» (Low
voltage) and «HV» (High voltage) abbreviations, described in the
nomenclature of the model with an «A» for «LV» and omitted for
«HV», grouping the following interval of voltages:
LV.- 3x200 to 3x230 V (115 to 133 V in single phase).
•
HV.- 3x380 to 3x415 V (220 to 240 V in single phase).
•
These abbreviations do not have any other purpose than matching
and/or helping in order to give a better comprehension of the de-
tailed information in this document and even they are not shown
either in the nomenclature, or in the reference of the nameplate
model.
All models can operate as single units or connected in parallel with
other equipments of the same family, because the needed elec-
tronic kit is already included.
Parallel connection can be done at any time when the upgrading
requirements are needed to increase the supplied power of the
equipment or in order to have redundant operating systems for in-
stallations with higher safety.
Do not connect SLC CUBE3+ PS equipments of different fea-
tures versions, settings, back up times or duplicated addresses (i.e.:
two equipments, although they are identical, coming from two par-
allel systems and with the same address) in parallel.
In any parallel system only one and different address is assigned to
each equipment that makes the system.
SLC CUBE3+ PS UNINTERRUMPTIBLE POWER SOURCE
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