Specifications are subject to change without notice. No liability accepted for errors or omissions.
10
#1 1 x
No-Break™DC
charger and 1 x battery bank
This is the basic connection which is most commonly used, and provides
adequate protection for the majority of systems requiring DC back up in
the event of a mains power failure.
#2 1 x
No-Break™DC charger and 2 x battery banks
The
SR250
xxx
V
No-Break™DC
UPS
is designed to provide superior
battery backup availability without having to use two power supplies.
Dual battery banks and automatic battery condition testing reduce the risk
of battery failure for critical applications.
Power OK
YES
Battery Missing (B1&B2)
YES
Battery Low (B1&B2)
YES
Battery Condition Test Fail
(B1 & B2)
YES
Alarms Available
Power OK
YES
Battery Missing
YES
Battery Low
YES
Battery Condition Test Fail
YES
Alarms Available
#3 2 x
No-Break™DC
chargers and 2 x battery banks
2 x No-Break™DC
chargers connected in parallel with separate battery
banks & output diodes. This solution provides an extremely high level
of redundancy for very critical applications, with redundancy of the
battery in addition to the power supply. The diodes isolate the units
from one another in the event of a short circuit appearing at the other
output and aid current sharing.
Power OK
YES
Battery Missing
YES
Battery Low
YES
Battery Condition Test Fail*
1
YES
Alarms Available
INPUT
LOAD
BAT 1
BAT 2
BCT LOAD
=
ALARMS
COMMS PORT
L+
L-
B1+
B1-
B2+
B2-
RES
RES
SRxxxV
ECB
=
INPUT
L+
B-
L-
ALARMS
SRxxxC
B+
LOAD
ECB
SRxxxC
SRxxxC
ALARMS
ALARMS
L+,B+
L+,B+
B-
B-
L-
L-
INPUT
INPUT
LOAD
=
=
BAT
ECB
ECB
#4
No-Break™DC
Connection for high peak loads
This is a basic connection which is used when there is a connected load
with a peak current greater than 1.5 times the rated current of the
charger. Standing loads are connected normally and an optional exter-
nal low voltage disconnect may be used for the peak load.
Power OK
YES
Battery Missing
YES
Battery Low
YES
Battery Condition Test Fail
YES
Alarms Available
=
PEAK
LOAD
BAT
ECB
INPUT
NORMAL
LOAD
*LVD
* optional
L+,B+
B-
L-
ALARMS
SRxxxC
Single battery DC
backup system
N+1 redundancy for
batteries
N+1 redundancy for
charger and batteries
Single battery DC
backup system for
peak loads
*
1
interlock circuit required for
automated BCT
No-Break DC & standard N+1 connections
