SmartSwitch™
TECHNICAL DATA
279 mm
RECPT.
VOLTAGE
FREQ.
HZ
AMPS
CONT.
ENC.
TYPE
SSIBMAR01
SSIBMBU01
SSIBMCU01
SSIBMDU01
SSIBMEU01
RS3743
RS3744
RS3753
RS3754
RS7324
208
208
208
208
208
60
60
60
60
60
2
3
2
3
3
—
—
—
—
—
1
1
1
1
1
2
3
2
3
3
20
15
30
30
60
16
12
24
24
48
R
U
U
U
U
SS420R9VU01
SS430R9VU01
SS460R9VU01
420R9V
430R9V
460R9V
208
208
208
60
60
60
3
3
3
—
—
—
1
1
1
3
3
3
20
30
60
16
24
48
U
U
U
SS515R2R01
SS515R4R01
SS520R2R01
SS520R4R01
SS530R1U01
5262
(2) 5262
5362
(2) 5362
9308
120
120
120
120
120
60
60
60
60
60
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
15
20
20
30
12
12
16
16
24
R
R
R
R
U
SS615R2R01
SS620R2R01
SS630R1U01
5662
5462
9330
208
208
208
60
60
60
2
2
2
—
—
—
1
1
1
2
2
2
15
20
30
12
16
24
R
R
U
SS1420R1U01
SS1430R1U01
SS1520R1U01
8410
9430
8420
120/208
120/208
208
60
60
60
2
2
3
1
1
—
1
1
1
2
2
3
20
30
20
16
24
16
U
U
U
SSL515R1R01
SSL515R2R01
SSL520R1R01
SSL520R2R01
SSL530R1U01
4710
4700
2310
(2) 2310
2610
120
120
120
120
120
60
60
60
60
60
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
15
20
20
30
12
12
16
16
24
R
R
R
R
U
SSL615R1R01
SSL615R2R01
SSL620R1R01
SSL630R1U01
4560
4550
2320
2620
208
208
208
208
60
60
60
60
2
2
2
2
—
—
—
—
1
1
1
1
2
2
2
2
15
15
20
30
12
12
16
24
R
R
R
U
SSL1420R1U01
SSL1430R1U01
SSL1520R1U01
SSL1530R1U01
SSL2120R1U01
SSL2130R1U01
2410
2710
2420
2720
2510
2810
120/208
120/208
208
208
120/208
120/208
60
60
60
60
60
60
2
2
3
3
3
3
1
1
—
—
1
1
1
1
1
1
1
1
2
2
3
3
3
3
20
30
20
30
20
30
16
24
16
24
16
24
U
U
U
U
U
U
SSFW120R01
SSFW220R01
SSFW330NU01
SSFW360U01
NONE
NONE
NONE
NONE
120
208
120/208
208
60
60
60
60
1
2
3
3
1
—
1
—
1
1
1
1
1
2
3
3
20
20
30
60
16
16
24
48
R
R
U
U
SSFW113R01
SSFW150U01
SSFW325U01
NONE
NONE
NONE
230
230
400
50
50
50
1
1
3
1
1
—
1
1
1
1
1
3
13
50
25
13
50
25
R
U
U
SSFW325NU01
SSFW350U01
NONE
NONE
230/400
400
50
50
3
3
1
—
1
1
3
3
25
50
25
50
U
U
MODEL
NO. OF CONDUCTORS
PHASE NEUT.
GND
BREAKER SIZE*
POLES AMPS
508 mm
508 mm
518 mm
483 mm
133 mm
L I E B E R T C O R P O R AT I O N
1050 DEARBORN DRIVE
P.O. BOX 29186
COLUMBUS, OHIO 43229
USA
TEL: +1 614 888 0246
FAX: +1 614 841 6022
*Supply branch breaker not included in SmartSwitch. Consult factory for other receptacles.
For connectors not shown, consult Applications Engineering.
LIEBERT WEB SITE
SPECIFICATIONS
http://www.liebert.com
■
■
■
■
■
■
■
■
■
■
■
■
■
Manual and Automatic Transfers
Sense and Transfer Time: 2.5 to 6 milliseconds
Break-Before-Make Switching
Selectable Preferred Source
Selectable Auto/Manual Retransfer
Adjustable Retransfer Time Delay: 1 to 60 seconds
Adjustable In-Phase Transfer Window: 1 to 15 degrees
Adjustable Output Overload Transfer Inhibit
Programmable Self Test
Convection Cooling
Operating Temperature Range: 0 to 40°C
Load Power Factor: 0.5 to 1.0
Load Crest Factor: up to 3.5
■ Overload Capability: 125% for 2 hours;
1000% for 2 cycles
■ Source Voltage Distortion: up to 10% THD
■ Withstands Transient Voltage Surges up to 6 kV as
defined by IEEE C62.41 for Category A3,
meets EN 50082-1
■ Meets FCC Part 15 Class A and EN 50081-2
Emission Limits
■ Redundant Control Power Supplies
■ Integral Maintenance Bypass
■ Eight Isolated Form C Switch Status Contacts
■ Hot-Swap Electronics Module
■ RS-232 ASCII Communication Port
While every precaution has been taken to ensure accuracy and completeness in this
brochure, Liebert Corporation assumes no responsibility, and disclaims all liability for
damages resulting from use of this information or for any errors or omissions.
© 1998 Liebert Corporation. All rights reserved throughout the world.
Specifications subject to change without notice.
All names referred to are trademarks or registered trademarks of their respective owners.
SLE SMS E.2
Printed in Italy
LIEBERT EUROPE
VIA G. ROSSINI 6
20098 S. GIULIANO MILANESE (MI)
ITALY
TEL: +39 02 982501
FAX: +39 02 9844633
LIEBERT UK
GLOBE PARK, MARLOW
BUCKINGHAMSHIRE, SL7 1YG
UNITED KINGDOM
TEL: +44 (0)1628 403200
FAX: +44 (0)1628 403203
P
O W E R
P
R O T E C T I O N
SmartSwitch™
POINT-OF-USE TRANSFER SWITCH
FOR RELIABLE, REDUNDANT
AC POWER
If your critical electronic equipment demands the
reliability of redundant power sources, Liebert has a
unique and dependable solution.
Liebert SmartSwitch provides rapid switching
between two independent AC power sources, for
uninterrupted operation of critical electronic
equipment. SmartSwitch proven power switching
technology allows dual AC power paths all the way up
to the critical load, for the ultimate in AC power
system redundancy, power availability and fault
tolerance.
■ Power transfer invisible to protected
DESIGNED TO MINIMISE
DOWNTIME ON CRITICAL SYSTEMS
equipment
■ Manual and automatic capability
■ Provides maximum flexibility and easy load
balancing
■ Integral maintenance bypass to both input
sources
■ Modules may be hot-swapped for minimal
downtime
■ Switched neutrals ensure power sources
isolation and simplify earthing
■ CE marked. Complies with EMC and
Low Voltage directives
■ Quality Systems certificate to ISO9000
L
P
I E B E R T
O W E R
C
P
O R P O R A T I O N
R O T E C T I O N
CRITICAL SYSTEMS DEMAND DUAL POWER
SOURCE SUPPORT
Many data processing, telecommunications and similar
Modelled on proven UPS technology, the Liebert
critical systems are designed for continuous operation,
SmartSwitch power transfer switch is installed in the
frequently without tolerance for even scheduled
most effective position - close to the protected
downtime, so dual AC power sourcing is essential, with
equipment. This ensures redundant power paths are
a reliable switching mechanism to support it. However,
available right up to the load.
the right switching is vital.
■ The transfer switch must use proven technology and
design features for dependable operation.
■ It must operate sufficiently rapidly and reliably to
avoid ‘fast’ power faults such as UPS systems, circuit
breaker trips, insulation failures, or operator errors.
■ Designed for reliability
Break-Before-Make switching eliminates any
possibility of connecting the two independent
power sources together, even under fault conditions.
Switched neutrals maintain isolation of both power
sources and simplify grounding.
■ It must be easy to configure, install, operate and
maintain, to ensure continuous uptime.
■ A dual power system which is inherently reliable,
fast and convenient will provide the vital supply of
continuous power which your critical electronics
demand - if the switching is right.
Diagnostics and Transfer tests detect any potential
switch failures before the problem becomes critical.
■ Rapid operation
SmartSwitch transfer time of six milliseconds is
invisible to sensitive electronic equipment, and well
within CBEMA & IEEE standards.
Automatic transfer protects the critical load as soon
as a problem is detected on the power source by
switching to the alternative supply.
Manual transfer allows power sources to be switched
whenever required for scheduled source shutdowns
or maintenance.
SmartSwitch provides automatic or manual transfer between
dual utility or UPS sources, allowing redundant power paths all
the way up to the critical load.
UPS or
Utility B
UPS or
Utility A
PDU A
PDU B
SmartSwitch
Critical
Load
L
I E B E R T
C
O R P O R A T I O N
SMARTSWITCH ENHANCES POWER,
RELIABILITY AND AVAILABILITY
FEATURES
YOU CAN TRUST THE LIEBERT NAME
■ Receptacle and connector options to match load
For over 30 years Liebert has been an industry leader,
specifications, so simplifying system installation.
■ Selectable preferred input feature allows
renowned world-wide for its advanced computer
protection equipment, including precision air
pre-selection of the normal and alternative power
conditioning, UPS, power conditioning, battery and site
source without rewiring or load shutdown.
monitoring systems.
■ LED indicators provide instant operating status.
There are now more than 1,000,000 Liebert
Eight output contacts are available for remote status
installations across the world. Wherever they are, every
indication. Setpoint control and remote monitoring
customer has the constant reassurance that there are
are available via RS232 ASCII communications port.
always specialists on call to maintain, update and
■ Integral maintenance bypass to both input sources
advise on their Liebert installation.
provides safe and fast servicing without disturbing
Part of Emerson Electric Co, Liebert is one of the
protected equipment.
largest suppliers of equipment for telecommunication
■ Hot swap electronics module allows continuing
power to critical equipment during SmartSwitch
and computer installations, clean rooms, high security
areas and other critical applications.
The company places a high priority on using the most
maintenance or replacement.
■ SmartSwitch can be located under a raised floor or
wall or rack mounted.
advanced technology, and continues to invest heavily in
research and development. All products and systems
make the most efficient use of energy and have very
high levels of reliability. All are backed by the
worldwide resources of the Liebert Corporation, the
name you can trust.
Source 1
Output
Source 2
Connections
and Bypass
Section
Hot-Swap
Electronics
Section
Logic and Power Supplies
With separate sections for power connections
and electronics, SmartSwitch can sustain power
to the load even when the electronics module
is being swapped for service.