Liebert
LM Series
®
Power Protection
LM Series
CONTINUOUS PROTECTION
FOR YOUR BUSINESS
Provides Surge Suppression
Solutions That Meet
All Your Needs
THE LM SERIES:
THE MOST ADVANCED, COST-EFFECTIVE
PRODUCT LINE IN THE INDUSTRY
The LM is a surge protective device (SPD) that offers continuous protection from damaging transients and electrical line noise.
The LM utilizes patented circuitry to monitor the status of all protection modes, including neutral to ground. Should protection be
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unavailable in any mode, the green LED will be extinguished, and the red LED will be illuminated. In addition, high isolation form
C dry contacts provide for remote monitoring of suppression system failure, under voltage, and phase and power loss. LM patented
suppression integrity monitoring indicates failure for both shorted or opened suppression components.
The LM Series can be a facility-wide product family
At A Glance
and may be installed from service entrances to
• Modular design allows for flexibility
distribution panels to branch panels.
• Surge suppression range of 60 to 600 kA per phase
• Commercial buildings
• Industry's highest surge current repeatability
• Institutional facilities
• Internal/external monitoring,
• Industrial plants
ncluding neutral to ground
• Any facility that has an environment with
electronics-based equipment
• UL rated 200k AIC with component level
fusing for safe operation
• All modes of protection available,
any combination optional
• Sine wave tracking, EMI/RFI filtering
• UL 1449 (second edition), UL1283 and CUL listed
• ANSI/IEEE C62.11, C62.41, C62.45
categories A, B, and C3 tested
• NEMA 12 enclosure with 3R, 4, and 4X options available.
• 5-year warranty
• Form C dry contacts
• Choice of options
Disconnect
Audible alarm
Transient counter
Remote monitor panel
Test set
Additional form C dry contacts
Standard LM Series SPD
The LM Series - Standard Features
Unit Status Indicators
The unit has an integral status
UL 1449 (Second Edition)
Ratings and Voltage Codes
Overcurrent Protection
All components are individually
circuit that monitors the operational
fused and unit is UL rated for 200k
status of all modes of protection,
AIC for safe operation.
including Line to Neutral, Line to
Ground, and Neutral to Ground. In
Voltage
Voltage
Code* Configuration
Suppressed Voltage Ratings
Per Mode (VAC)
L=Line, N=Neutral, G=Ground
L-N
L-L
L-G
N-G
120
120
400
700
400
400
120S
120/240
400
700
400
400
120Y
120/208
400
700
400
400
208
208
N/A
700
700
N/A
208D
208
N/A
700
700
N/A
230Y
230/400 or
240/415
700
1500
700
700
240D
240
N/A
700
700
N/A
240H**
120/240
400**
700
400
277Y
277/480
700
1500
700
400
700
347Y
347/600
1200
2000
1200
1000
480D
480
N/A
1500
1500
N/A
600D
600
N/A
2000
1800
N/A
Agency Listing
the unlikely event that protection is
The specified unit is UL 1449
reduced, the green LED will go out
(Second Edition) Listed, UL 1283
and the red LED will be lit. LED
Listed, and CUL Listed. Control
indication shall be provided internal
Concepts/Liebert is also company
and external to the product.
certified ISO 9001 for manufacturing,
design, and service.
Enclosure
The unit is housed in a heavy
duty, steel, NEMA 12 dust-tight,
Warranty
A full five-year parts warranty.
drip-tight enclosure.
Form C Dry Contacts
Undervoltage Detection
For remote indication.
LED will indicate an undervoltage
at 70% of nominal.
Life Cycle Testing
Phase and Power Loss Monitoring
survive multiple 10kA, 20KV, IEEE
* Other voltage codes available, consult factory
The system is life cycle tested to
** Delta Hi-Leg units—Phase B assigned Hi-Leg; Phase B ratings 700V
LED will indicate a loss of any
phase or loss of power.
C62.41 Category C3 transients with
less than 5% degradation of clamping
voltage. The minimum numbers of
Noise Attentuation
Surge Current and Protection Modes
Series
The filter provides insertion loss
Surge Current Per Mode and
Protection Modes (kA)*
L-L, L-N
L-G
N-G
LM060
60
60
60
LM080
80
80
80
LM100
100
100
100
LM125
125
125
125
LM150
150
150
150
LM200
200
200
200
LM250
250
250
250
LM300
300
300
300
* Protection modes standard in all units
** Other voltage codes available, consult factory
with a maximum of 60 dB from 100
kHz to 100 MHz per 50 Ohm
Insertion Loss Methodology from
MIL Std. 220A.
surges the unit shall be able to
protect against are 6,000 per phase.
The LM Series
- Optional
The
LM SeriesFeatures
- Optional Features
Integral Fused Disconnect
The system includes a 200k AIC integral fused
disconnect switch located in line with the system
Enclosures
enclosure with an external manual operator.
NEMA 3R
Audible Alarm
NEMA 4
NEMA 4X
Protection against falling
rain and sleet.
Protection against windblown
dust and rain, splashing water,
and hose-directed water.
Protection against corrosion,
windblown dust and rain, splashing
water, and hose-directed water
The system can be equipped with an audible alarm
activated when summary alarm contacts are activated.
An ON/OFF switch is provided to silence the alarm, and
an alarm push-to-test switch to test the alarm function.
A visible LED confirms whether alarm is on or disabled.
Both switches and audible alarm will be located on the
panel's front cover.
Transient Counter
The system can be equipped with a transient counter
which totals transient surges that deviate from the sine
wave envelop by more than 125 volts. The counter is
located on the unit's front cover and features a six digit
LCD, lithium batteries (with 10-year life), and remotely
located reset switches.
Test Point/Kit
The unit can include a test point and diagnostic test kit
option. The test kit (TS-X) uses a microprocessor monitor
and controlled pulse generator to induce a high voltage
transient, which drives the surge protective device into
clamping. This test kit allows the end user to test and
monitor in every mode (L-N, N-G, L-G).
Remote Monitor Panel
A self contained, UL Listed monitoring panel. Input
power to the monitoring panel is equipped with a 6-foot
power cord with a 3 NEMA 5-15 plug. The monitor has
an audible alarm, red and green LEDs silence switch,
and a test switch.
Form C Dry Contacts
An additional set of electronically isolated form C dry
contacts (two are provided with the audible alarm or
transient counter) one normally open and normally
closed for remote monitoring.
LM Series SPD with options
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What is “Dirty Power?”
Utilities have generated and distributed electrical power the same way for decades. Unfortunately, this unconditioned electrical
power can provide abnormalities in the electricity that runs in your facility. This is commonly referred to as "dirty power." But until
the advent of sensitive electronic equipment, "clean power" was never an issue.
In today's world, almost every business depends on
Why? Many utility systems are aging and few power
relatively fragile micro-electronics to run everything
plants have been built over the last decade. With increased
from computer networks to manufacturing lines. Which
demand for power, their supply margins are dipping
means that power disturbances can disrupt or cripple
dangerously low. The farther away from the source of
equipment, causing the loss of data, productivity, and
power, the greater the risk of power quality problems.
money. In fact, downtime and damage caused by dirty
power cost North American companies an estimated
$26 billion a year.
Today's industries are looking for cost-effective ways
Causes Inside Your Facility
According to some studies, 3/4 of all power
disturbances are caused by equipment inside your
to intercept transients, provide clean power in their
building. If your facility is more then a decade old,
facilities, and safeguard their businesses from the
chances are the wiring was not designed to support the
astronomical, and unnecessary, cost of dirty power.
intensive use of electronic equipment. In industrial
That's why Liebert designed the LM Series.
facilities, these problems are even more complex. In fact,
The causes of dirty power are as varied as the names
any device that runs in cycles can create a drain or a surge
used to describe it -- dirty power, electronic rust, surge,
when it switches on or off. The more power the
spike, transient, fluctuation, interruption or noise.
equipment uses, the bigger the affect. Even something as
Fortunately, abnormalities typically fall into one of two
small as a copier or a laser printer can cause problems in
categories -- external or internal.
sensitive equipment that share the same line.
Hidden Problems Created By
Dirty Power
The Complete Protection Experts
• Unexplained system disruptions.
But you can protect the equipment in your facility from
• Errors and shutdowns of data transmission,
power surges and transients by installing equipment such
or scrambled and unreadable data.
• Numerous, unexplained server shutdowns
and re-boots.
• Component failure, often well ahead of
Of course, you can't control how power is distributed.
as surge suppressors and filters. The issues affecting each
industry are varied. In addition to the LM Series we offer a
complete array of power conditioning solutions to meet a
wide range of applications, locations, and budgets.
projected life span.
Influencing the Industry
Causes Outside Your Facility
Lightning, natural disasters and inclement weather can
Liebert has received the UL 1449 Second Edition rating
for the LM Series. The fact that we're one of the first in
cause high-transient power line voltages that can adversely
the industry to receive this rating is proof that Liebert is
affect your power supply. Utility switching and faults on
leading the way with our engineering designs and over
the utility’s distribution system can adversely affect the
30 years of experience.
quality of your power before it even reaches your facility.
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WE HELP YOU GET IT RIGHT —
RIGHT FROM THE START.
LM Series
For over 35 years, Liebert has been providing tailored solutions for protecting the operation of critical
electronic systems in a variety of industries. From customer premise equipment to global networks, we’ve
used our expertise to tailor the right products, monitoring systems and global service capabilities into a
variety of specific solutions.
Liebert’s years of experience and knowledge of leading edge technologies enables us to truly
understand your needs — both in terms of overall reliability and specific areas of equipment
protection. Whether it’s a new or existing facility, centrally located or remote, we listen to you
and your preferences to help us develop solutions that are right for your facilities.
We recognize that each situation has its own unique requirements and are better prepared
than any other manufacturer to deliver the right level of reliability at the right price. And we do
it through the right combination of knowledge, experience, product selection and service capability.
Someone Nearby To Help Before And After The Sale
Power Protection
L I E B E R T CO R P O R AT I O N
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P.O. BOX 29186
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800.877.9222 PHONE (U.S. &
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Specifying and maintaining a high availability facility support system requires someone who
is knowledgeable in all phases of environmental and power protection. And knowing where to
turn for ongoing maintenance or service is just as important.
LIEBERT WEB SITE
http://www.liebert.com
One of the many things that differentiate Liebert from others in our business is local expertise.
We have the most extensive sales and service network in the world. Liebert’s extensive network
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of technical sales associates, backed by the industry’s largest service organization, enables us to
800 222 5877 PHONE
614 841 6755 (OUTSIDE U.S.)
respond quickly to customer needs.
No organization in the
world today has a better
understanding of exactly
what it takes to keep critical
information and industrial
processes operating
continuously than Liebert.
X
7 TECH SUPPORT
While every precaution has been taken to ensure accuracy and
completeness in this literature, Liebert Corporation assumes no
responsibility, and disclaims all liability for damages resulting
from use of this information or for any errors or omissions.
© 2002 Liebert Corporation. All rights reserved throughout
the world. Specifications subject to change without notice.
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of their respective owners.
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of the Liebert Corporation.
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of the Liebert Corporation.
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of Emerson Electric Co.
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