Salicru SLC ADAPT Series, User Manual

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4.3.  GENERAL DESCRIPTION.

The 

SLC ADAPT 

series is classified as an on-line double-

conversion uninterruptible power supply with DSP control and 

three-level IGBT inverter technology, modular topology and 

great flexibility.

Reliability

: The DSP control associated with three-level PWM 

technology increases the performance of the system and, together 

with the redundancy of the modules, manages to increase the 

availability of power to the critical loads, a parameter that 

contributes to achieving a good TIER classification for the entire 

system.

Availability

:  Its hot-swap modules can be added or replaced 

during operation, thereby improving mean time to repair 

(MTTR) and reducing maintenance costs. Moreover, both the 

control display and the bypass module can be replaced without 

affecting the operation of the device.  In addition, the sys-

tem’s remote management, which can be integrated into any 

platform, also makes operation easier. The extensive backup 

options available, along with smart battery charging, ensure 

continuous operation of the protected critical loads.

Modularity

:  This allows simple configurable solutions from 

30 to 1500 kVA by installing 30 or 50 kVA modules in the 6-slot 

(30 kVA modules) or 10-slot cabinets. As composite solutions, 

a maximum of 30 modules can be paralleled to obtain higher 

power systems or N+n structures. Either way, it is only possible 

to install identical modules in the same cabinet and/or parallel 

cabinets with modules of equal power. This enables gradual 

growth and scaling for future expansion depending on the 

need for pay-as-you-grow protection, improving the total cost 

of ownership (TCO) and providing a high level of flexibility. At 

operational level, a cabinet consisting of ‘N’ modules connected 

in parallel is considered a single UPS.
Any expansion or structural change to the number of modules 

is possible even during normal operation and without needing 

to shut down the hot-swappable system, all with the simple 

use of a screwdriver to remove or screw the fixing screws of 

the module(s). Although all of the UPS’s modules incorporate a 

battery charger that can allocate up to 20% of its rated power 

to maintaining them at an optimum charge level depending on 

the type and number of elements, 50 A battery charger modules 

are available to be installed solely with the 30 kVA SLC ADAPT 

modules. As many charging modules as considered appropriate 

can be installed, but this will be to the detriment of the total 

number of UPS modules and, consequently, the total power of 

the system, which will be reduced.

Backup

: The capacity of the batteries determines the backup 

time of the system when replacing the usual source of energy 

during mains failures. The accumulator bank is always common 

to any system mounted in the same cabinet. Batteries owned by 

the customer or supplied with the UPS, depending on different 

factors in addition to the power and/or backup requested, can 

be installed in a back or one or more cabinets, always external 

to the UPS itself. 

4.3.1.  Introduction.

SLC ADAPT 

series UPSs basically consist of:

•

6- or 10-slot cabinet to install the power modules.

•

Power modules consisting of the following blocks:

ˆ

AC/DC PFC rectifier.

ˆ

Battery charger.

ˆ

DC/AC inverter.

ˆ

Digital control and UPS management.

•

Centralised bypass module: control of UPS and parallel pa-

rameters.

•

Maintenance bypass.

•

Control panel with touch screen (see section X for more 

information).

•

Batteries (number, type and location depending on the 

backup time).

•

Self-supporting 36 and 46U cabinets for the placement of 

the different modules.

4.3.2.  Conceptual diagram of the system.

The modular UPSs of the 

SLC ADAPT

 series consist of power 

modules, a bypass and monitoring module, and a cabinet with 

a range of disconnectors for Input, Bypass Output and Manual 

Bypass. The 180 and 300 kVA UPSs only have a manual bypass 

switch. One or more battery branches should be installed to 

provide backup power in the event of a power failure. The 

structure of the UPS is shown in Fig. 14.

STATIC BYPASS MODULE

DC / AC 

INVERTER

MANUAL BYPASS

REC / PFC

BAT / DC

DC / DC 

INVERTER

BYPASS

STATIC BYPASS 

LINE INPUT -R, S, T-

N

POWER MODULE # 1

DC / AC 

INVERTER

REC / PFC

BAT / DC

DC / DC 

INVERTER

POWER MODULE #N

•
•
•

OUTPUT 

U, V, W

N

BATTERY MODULE

BCB

BATTERY MODULE

BCB

Connection strips  

between phases for mains.

Q1

Q2

INLET LINE OF UPS

-R, S, T-

 The batteries are represented in 

the structural diagram as they are 
an essential part of all UPSs, 
although they will never be 
included in the cabinet itself. The 
batteries can be supplied in a 
separate cabinet, in a bank or not 
supplied if the customer already 
has them.

Fig. 14. 

Conceptual diagram of the SLC ADAPT series 

modular UPS.

SLC ADAPT

 UNINTERRUPTIBLE POWER SUPPLY (UPS)

USER'S MANUAL