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

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 current rms

50

A

I

PM

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 current rms

25

mA

K

N

Conversion ratio

1 : 2000

V

C

Supply voltage (± 5 %)

± 12 .. 15

V

I

C

Current consumption

Accuracy - Dynamic performance data

X

± 0.25

%

ε

L

Linearity error

< 0.15

%

Typ

Max

I

O

Offset current @ T

± 0.15

mA

I

OM

Magnetic offset current @ I

after an overload of 5 x I

PN

± 0.10 ± 0.15

mA

I

OT

Temperature variation 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

< 500

ns

di/dt

di/dt accurately followed

> 200

A/µs

BW

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

115

Ω

@ T

121

Ω

m

Mass

22

g

Standards

EN 50178: 1997

R

2)

50 Hz Sinusoidal

I

16010

Features

transducer using the Hall effect

according to UL 94-V0.

Advantages

interference

Applications

motor drives

(UPS)

(SMPS)

applications.

Application domain