8.3. PARALLEL SYSTEM OPERATING
PROCEDURES.
The operating procedures established in this section apply to sys-
tems incorporating devices connected in parallel, on the condition
that all of the devices in the system have the same configuration
and technical characteristics.
8.3.1. Startup procedure for a parallel system.
Make sure the load(s) and/or the input circuit breakers on the
•
distribution board are in the "Off" position.
Supply input voltage to the protection board.
•
Set the input switches on the board for each device in the par-
•
allel system to the "On" position.
(Q1) (only for tower format devices)
Set the input switch
•
each UPS to "On".
The touchscreen for each device will be activated automatically.
•
The devices will start up in standby mode with the following
<41> loss of bypass
warnings activated:
output switch
open.
Via the INFO → BASIC menu (screen 2/2), make sure that for
•
all devices, the "PAR status" is set to "Parallel" and that, in
each of them, the ID PAR 1, 2, 3 etc. is shown (this identifies
the device within the parallel system).
Example for a parallel system with two devices:
15kVA
Standby Mode
SST EMAIL
PAR status
BASIC
PAR ID:
RATED
Customer code
Dynamic password
PARAMETERS
CONTROL
START
MEASUREMENTS
15kVA
Standby Mode
SST EMAIL
PAR status
BASIC
PAR ID:
RATED
Customer code
Dynamic password
PARAMETERS
START
CONTROL
MEASUREMENTS
Set the bypass switches on the board to "On", for a system
•
with independent static bypass line.
Set the bypass input switch
•
vices)
of each UPS to "On". The warning message
disappear and the devices will go into bypass mode.
USER MANUAL
of
<45> external
and
04/11/2020
11:56:35
SST@SALICRU.COM
Parallel
1
2 / 2
0000000
Disabled
SETTINGS
INFO
RECORD
04/11/2020
11:56:35
SST@SALICRU.COM
Parallel
2
2 / 2
0000000
Disabled
SETTINGS
INFO
RECORD
(Q4) (only for tower format de-
<41>
will
Activate the inverter for each device, as follows:
•
CONTROL
Press the
menu.
Press the
UPS ON/OFF
Turn on UPS
The pop-up message
the action by pressing the
The word
"On"
will appear on the screen of the first
device, and will remain there until the same procedure
is completed for all of the UPSs in the system. Once the
order to switch on has been given to the final UPS in the
system, the entire parallel system will move from bypass
mode to line mode.
Until now, voltage has not been supplied to the output, as the
•
respective output disconnectors
as those of the board, have not yet been activated.
Set the board's output switches to "On". Check to make sure
•
the
<45> external output switch open
appeared from each device in the parallel system.
(Q2) (only for tower format devices)
Set the output switch
•
for each UPS to "On".
The parallel system supplies voltage to the output terminals of
•
the protection board.
If the parallel system has an output distribution, activate it by
•
setting the switches to "On".
Gradually turn on the loads that are to be supplied with power.
•
The system as a whole is now fully activated and the loads are
protected by the parallel UPS system.
Check the screen to make sure the load is divided between all
•
of the UPSs in the system.
8.3.2. Stopping a device in the parallel system.
Go to the device's
CONTROL
•
and confirm by pressing YES.
15kVA
Modo Línea
UPS ON/OFF
BATTERY TEST
Exit parallel?
MUTE ALL
EXIT PARALLEL
YES
START
CONTROL
MEASUREMENTS
The UPS will go into standby mode and its load will be trans-
•
ferred in full to the rest of the devices in the parallel system.
Set the UPS's bypass and input circuit breakers to "Off"
•
for tower format
devices).
After a few seconds, the UPS will stop.
•
If you have stopped the device in order to disconnect it from
•
the parallel system entirely, you must then set the input, output
and bypass switches on the UPS's external board to "Off", in
order to isolate it completely.
SLC CUBE4 7,5 kVA a 20 kVA - UNINTERRUPTIBLE POWER SOIRCE (UPS)-
sub-menu.
will appear. Confirm
"YES"
option.
(Q2)
for each device, as well
warnings have dis-
menu, press
EXIT PARALLEL
04/11/2020
11:56:35
NO
SETTINGS
INFO
RECORD
(only
131