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14December2012/version 3

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice

www.lem.com

Current Transducer LA 150-TP

For the electronic measurement of currents: DC, AC, pulsed...,

with galvanic isolation between the primary circuit and the secondary

circuit.

Electrical data

I

PN

Primary nominal current rms

150

A

I

PM

Primary current, measuring range

0 .. ± 212

A

R

M

Measuring resistance @ 85°C

R

M min

R

M max

with ± 12 V

@ ± 150 A

max

0

40

Ω

@ ± 212 A

max

0

3

Ω

with ± 15 V

@ ± 150 A

max

0

78

Ω

@ ± 212 A

max

0

30

Ω

I

SN

Secondary nominal current rms

75

mA

K

N

Conversion ratio

1 : 2000

V

C

Supply voltage (± 5 %)

± 12 .. 15

V

I

C

Current consumption

I

s

mA

Accuracy - Dynamic performance data

X

Accuracy @

I

< 0.5

%

ε

L

Linearity error

< 0.1

%

Typ

Max

I

OE

Electrical offset current @

I

± 0.10

mA

I

OM

Magnetic offset current @

I

after an overload of 3 x

I

PN

± 0.25

mA

I

OT

Temperature variation of

I

O

- 40°C .. + 85°C

± 0.15 ± 0.30

mA

t

ra

Reaction time to 10 % of

I

< 300

ns

t

r

I

< 500

ns

di/dt

di/dt accurately followed

> 100

A/µs

BW

Frequency bandwidth (- 1 dB)

DC .. 150

kHz

General data

T

A

Ambient operating temperature

- 40 .. + 85

°C

T

S

Ambient storage temperature

- 40 .. + 90

°C

R

S

Secondary coil resistance @

T

64 ± 2

Ω

m

Mass

< 35

g

Standard

EN 50178: 1997

I

150 A

Features

● Closed loop (compensated)

current transducer using the Hall

effect

● Isolated plastic case recognized

according to UL 94-V0.

Advantages

● Excellent accuracy

● Very good linearity

● Low temperature drift

● Optimized response time

● Wide frequency bandwidth

● No insertion losses

● High immunity to external

interference

● Current overload capability.

Applications

● AC variable speed drives and

servo motor drives

● Static converters for DC motor

drives

● Battery supplied applications

● Uninterruptible Power Supplies

(UPS)

● Switched Mode Power Supplies

(SMPS)

● Power supplies for welding

applications.

Application domain

● Industrial.