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 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 and may be installed
from service entrances to distribution
panels to branch panels.
n
Commercial buildings
n
Institutional facilities
n
Industrial plants
n
Any facility that has an environment
with electronics-based equipment
At A Glance
n
Modular design allows for flexibility
n
Surge suppression range up to
500 kA per phase
n
Industry’s highest surge current
repeatability
n
Internal/external monitoring,
including neutral to ground
n
UL rated 200k AIC with component
level fusing for safe operation
n
All modes of protection standard,
any combination optional
n
Sine wave tracking, EMI/RFI filtering
n
UL 1449 (s
econd edition), UL1283
and CUL listed
n
ANSI/IEEE C62.11, C62.41, C62.45
categories A, B, and C3 tested
n
Tested to NEMA LS1
n
NEMA 12 enclosure with 3R, 4,
and 4X options available
n
5-year warranty
n
2 sets of Form C dry contacts
n
Audible alarm
n
Choice of options
n
Disconnect
n
Transient counter
n
Remote monitor panel
n
Test set
Standard LM Series SPD
2
Standard Features
Optional Features
Unit Status Indicators
The unit has an integral status circuit
that monitors the operational status of
all modes of protection, including Line
to Neutral, Line to Ground, and
Neutral to Ground. In the unlikely
event that protection is reduced,
the green LED will go out and the red
LED will be lit. LED indication shall
be provided internal and external to
the product.
Enclosure
The unit is housed in a heavy
duty, steel, NEMA 12 dust-tight,
drip-tight enclosure.
Undervoltage Detection
System monitoring will indicate an
undervoltage at 70% of nominal.
Phase and Power Loss Monitoring
System monitoring will indicate a loss
f any phase or loss of power.
o
Noise Attentuation
The filter provides insertion loss up to
60 dB from 100 kHz to 100 MHz per 50
Ohm Insertion Loss Methodology from
MIL Std. 220A.
Overcurrent Protection
All components are individually fused
and unit is UL rated for 200k AIC for
safe operation.
Audible Alarm
The system is equipped with an
audible alarm activated when
summary alarm contacts are
activated. An ON/OFF button is
provided to silence the alarm, and
an alarm push-to-test button to
test the alarm function. A visible
LED confirms whether alarm is on
or disabled. Both buttons and the
audible alarm are located on the
panel’s front cover.
Agency Listing
The specified unit is UL 1449 (Second
Edition) Listed, UL 1283 Listed, and
CUL Listed. Control Concepts/Liebert
is also company certified ISO 9001 for
manufacturing, design, and service.
Warranty
A full five-year parts warranty.
Form C Dry Contacts
Two sets of electronically isolated
m C dry contacts are provided,
or
f
pen, two normally
y o
all
m
o nor
w
(t
closed) for remote monitoring.
e Testing
l
c
y
fe C
i
L
The system is life cycle tested to
ve multiple 10kA, 20KV, IEEE
vi
sur
ansients with
y C3 tr
or
eg
t
C62.41 C
less than 5% degradation of clamping
oltage. The minimum numbers of
v
sur
against are 8,000 per phase.
a
s the unit sh
ge
all be a
le to protect
b
Integral Fused Disconnect
A 200k AIC integral disconnect switch
located within the system enclosure
with an external manual operator.
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
an 8 digit LCD, lithium batteries (with
10-year life), and reset switches.
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.
3
Specifications
LM Series Surge Suppression
Maximum Continuous
Operating Voltage (MCOV)120V ±25%, all others ±15%
ault Current Rating (AIC)200 kAIC
F
Operating Frequency Range47 - 63 Hz
Life Cycle Surge Testing 10kA, 20kV, IEEE, Cat. C3
UnitPer ModePer Phase
060-080
100-15016,00032,000
200-250
8,00016,000
24,00048,000
Response Time< 0.5 nanoseconds
Operating Humidity0% to 95%
Status IndicationLEDs, Dry Contacts, Audible Alarm
CertificationsUL 1449 & 1283, CUL, NEMA LS1, ISO 9001
EnclosureNEMA 12
Warranty5 Years Parts
UL 1449 Clamping Data (Second Edition)
EMI/RFI Noise Rejection
Single UnitFrequencySystem Installation
34dB100kHz51dB
51dB1MHz94dB
54dB10MHz114dB
48dB100MHz120dB
System VoltageL-NL-GL-LN-G
120/208400400700400
120/240400400700400
346/6001200120020001200
277/4807007001500700
480X15001500X
600X18002000X
How To Specify The Appropriate Model:
All LM model numbers begin with a LM prefix. Use Chart A to build your LM starting with the Surge Rating column. Moving left to right,
choose the correct configurations from each column for your application. Your completed model number should look similar to the example
w or LM250120YARCE. Refer to
lo
be
C
art B
h
or LM Se
f
ries dimensional data.
Chart A – Example
LM2 5 01 2 0YARCE
Model#
Indicators
LM
Low Cost
Chart B – LM Series Dimensional Data
Surge Rating
60kA/mode 060
80kA/mode 080
100kA/mode 100
125kA/mode
150kA/mode 150
Modular
200kA/mode 200
225kA/mode 225
250kA/mode 250
125
L - G Voltage
120-120V
208-208V
220-220V
230-230V
240-240V
277-277V
480-480V
600-600V
Dime
Configuration
Single Phase L-N, 2W+gndN
Single Phase L-L, 2W+gndL
Split Phase, 3W+gndS
ee Phase Wye 4W+gndY
Thr
Three Phase Delta 3W+gndD
Three Phase Delta Hi-leg 3W+gnd H
nsions (inches)Approx. Weight
UnitOptionsABCDEF
LM060
LM080
LM100
All1614816.7512.0 0.3135
LM125
LM150
LM200
LM225All2016921.25100.3145
LM250
Modes of
Protection
ALLA
Connection
Options
WireLug N
Disconnect R
Monitoring Options
Standard Monitoring
System, LEDs,
dible Alarm,
u
A
Dual Form C
ontacts
C
LEDs
, Audible
ge
m, Sur
ar
Al
Counter, Dual
Form C Contacts
NEMA 12 (Standard)
S
C
sur
lo
Enc
NEMA 3R
NEMA 4
NEMA 4X
e
E
R
T
X
4
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 relatively fragile
micro-electronics to run everything
from computer networks to
manufacturing lines. Which means
that power disturbances can disrupt
or cripple equipment, causing the loss
of data, productivity, and money.
act, downtime and damage
In f
caused by dirty power cost North
American companies an estimated
llion a year.
i
$26 b
es are looking for cost-
i
tr
s
du
’s in
y
a
od
T
ffective ways to intercept transients,
e
lean power in their facilities,
de c
vi
o
r
p
usinesses from the
ir b
d the
ar
egu
f
a
d s
an
astronomical, and unnecessary, cost of
wer. That’s why Liebert
y po
t
ir
d
s.
e
i
gned the LM Se
si
de
r
The causes of dirty power are as
varied as the names used to describe
it — dirty power, electronic rust,
surge, spike, transient, fluctuation,
interruption or noise. Fortunately,
abnormalities typically fall into one of
two categories — external or internal.
Hidden Problems Created
By Dirty Power
n
Unexplained system disruptions.
n
Errors and shutdowns of data
transmission, or scrambled and
unreadable data.
n
Numerous, unexplained server
shutdowns and re-boots.
n
Component failure, often well ahead
of projected life span.
Causes Outside Your Facility
Lightning, natural disasters and
inclement weather can cause hightransient power line voltages that can
adversely affect your power supply.
aults on the
d f
g an
hin
c
wit
y s
lit
ti
U
tility’s distribution system can
u
sely affect the quality of your
r
e
v
d
a
n reaches your
e
v
e it e
or
f
r be
e
w
po
acility. Why? Many utility systems are
f
ew power plants
d f
g an
gin
a
er the last decade.
v
lt o
ui
n b
e bee
v
a
h
With increased demand for power,
ly margins are dipping
p
p
ir su
the
w. The farther away
y lo
sl
u
o
r
ge
an
d
from the source of power, the greater
er quality problems.
w
f po
isk o
the r
Causes Inside Your Facility
According to some studies, 3/4 of all
power disturbances are caused by
equipment inside your building. If
your facility is more then a decade
old, chances are the wiring was not
designed to support the intensive use
of electronic equipment. In industrial
facilities, these problems are even
more complex. In fact, any device that
runs in cycles can create a drain or a
surge when it switches on or off. The
more power the equipment uses, the
bigger the affect. Even something as
small as a copier or a laser printer can
cause problems in sensitive
equipment that share the same line.
The Complete Protection Experts
Of course, you can’t control how
power is distributed. But you can
protect the equipment in your facility
from power surges and transients by
installing equipment such as surge
d filters. The issues
s an
or
s
s
e
r
p
p
su
ffecting each industry are varied. In
a
o the LM Series we offer a
on t
iti
d
d
a
f power conditioning
y o
a
r
e ar
t
le
p
om
c
olutions to meet a wide range of
s
cations, locations, and budgets.
li
p
p
a
Influencing the Industry
Liebert has received the UL 1449
Second Edition rating for the LM
Series. The fact that we’re one of the
first in the industry to receive this
rating is proof that Liebert is leading
the way with our engineering designs
and over 30 years of experience.
5
Emerson Network Power.
The global leader in enabling Business-Critical Continuity
Ensuring The High Availability Of
Mission-Critical Data And Applications.
Emerson Network Power, the global leader in enabling business-critical continuity,
ensures network resiliency and adaptability through a family of technologies —
cluding Liebert power and cooling technologies — that protect and support
in
business-critical systems. Liebert solutions employ an adaptive architecture that
responds to changes in criticality, density and capacity. Enterprises benefit
from greater IT system availability, operational flexibility, and reduced capital
equipment and operating costs.
rson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co.
Eme
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.