060124/7

LEM

www .lem.com

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

page 1/3

Current Transducer LAH 50-P

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

with a galvanic isolation between the primary circuit

(high power) and the secondary circuit (electronic circuit).

Electrical data

I

PN

Primary nominal r.m.s. current

50

A

I

P

0 .. 110

A

R

M

Measuring resistance @

T

T

R

with ± 12 V

@ I

0

221

0

214

Ω

@ I

2)

0

115

0

108

Ω

with ± 15 V

@ I

0

335

0

327

Ω

@ I

2)

0

195

0

188

Ω

I

SN

Secondary nominal r.m.s. current

25

mA

K

N

Conversion ratio

1 : 2000

V

C

Supply voltage (± 5 %)

± 12 .. 15

V

I

C

Current consumption

V

d

R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn

5

kV

V

e

R.m.s. voltage for partial discharge extinction @ 10 pC > 2

kV

V

w

Impulse withstand voltage 1.2/50 µs

> 12

kV

Accuracy - Dynamic performance data

X

± 0.25

%

ε

L

Linearity

< 0.15

%

Typ

Max

I

O

Offset current @ T

± 0.15

mA

I

OM

Residual current @ I

± 0.10 ± 0.15

mA

I

OT

Thermal drift of I

O

0°C .. + 70°C

± 0.10 ± 0.30

mA

- 25°C .. + 85°C

± 0.10 ± 0.40

mA

t

r a

Reaction time @ 10 % of I

PN

< 200

ns

t

r

PN

< 500

ns

di/dt

di/dt accurately followed

> 200

A/µs

f

Frequency bandwidth (- 1 dB)

DC .. 200

kHz

General data

T

A

Ambient operating temperature

- 25 .. + 85

°C

T

S

Ambient storage temperature

- 40 .. + 90

°C

R

S

Secondary coil resistance

@ T

135

Ω

@ T

142

Ω

Insulating material group

I

m

Mass

22

g

EN 50178

R

2)

50 Hz Sinusoidal

Features

transducer using the Hall effect

according to UL 94-V0.

Advantages

interference

Applications

motor drives

(UPS)

(SMPS)

applications.

I

16010