Emerson Liebert LM Series Brochure download pdf (Page 3)

Standard 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

o

f any phase or loss of power.

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.

3

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

f

or

m C dry contacts are provided,

(t

w

o nor

m

all

y o

pen, two normally

closed) for remote monitoring.

L

i

fe C

y

c

l

e Testing

The system is life cycle tested to

sur

vi

ve multiple 10kA, 20KV, IEEE

C62.41 C

a

t

eg

or

y C3 tr

ansients with

less than 5% degradation of clamping

v

oltage. The minimum numbers of

sur

ge

s the unit sh

all be a

b

le to protect

against are 8,000 per phase.

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.

Optional Features

1 2 3 4 5 6

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