LA 55-P LEM USA Inc, LA 55-P Datasheet

LA 55-P

Manufacturer Part Number

LA 55-P

Description

SENSOR CURRENT 50A TH

Manufacturer

LEM USA Inc

Series

LAr

Datasheet

1.LA_55-P.pdf (2 pages)

Specifications of LA 55-P

Current - Sensing

50A

Accuracy

±0.9%

Sensitivity

Current - Supply

Sensor Type

Closed Loop Hall Effect

Voltage - Supply

-12 V ~ 15 V

Output

Frequency

200kHz

Polarization

Bidirectional

Operating Temperature

-25°C ~ 85°C

Package / Case

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

398-1010
LA55-P

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Current Transducer LA 55-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).

di/dt

Notes :

LEM Components

Electrical data

Accuracy - Dynamic performance data

General data

Primary nominal r.m.s. current

Primary current, measuring range

Measuring resistance @

Secondary nominal r.m.s. current

Conversion ratio

Supply voltage (± 5 %)

Current consumption

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

Accuracy @ I

Linearity

Offset current @ I

Residual current

Thermal drift of I

Reaction time @ 10 % of I

Response time @ 90 % of I

di/dt accurately followed

Frequency bandwidth (- 1 dB)

Ambient operating temperature

Ambient storage temperature

Secondary coil resistance @

Mass

Standards

Measuring range limited to ± 60 A

Measuring range limited to ± 55 A

Result of the coercive field of the magnetic circuit

A list of corresponding tests is available

with ± 12 V

with ± 15 V

, T

@ I

= 0, T

= 25°C

= 0, after an overload of 3 x I

= 25°C

P max

@ ± 50 A

@ ± 70 A

@ ± 50 A

@ ± 70 A

P max

@ ± 12 .. 15 V (± 5 %)

@ ± 15 V (± 5 %)

- 25°C .. + 85°C

max

0°C .. + 70°C

= 70°C

= 85°C

M min

= 70°C

100

160

M max

0 .. ± 70

1 : 1000

± 12 .. 15

2.5

± 0.65

± 0.90

< 0.15

< 500

< 1

> 200

DC .. 200

- 25 .. + 85

- 40 .. + 90

EN 50178

± 0.1

Typ

(@ ± 15 V) +

135

135 155

M min

± 0.2

± 0.3

± 0.5

± 0.6

Max

= 85°C

135

M max

A/µs

kHz

n s

µs

°C

Features

Advantages

Applications

Closed loop (compensated) current

transducer using the Hall effect

Printed circuit board mounting

Insulated plastic case recognized

according to UL 94-V0.

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.

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.

50 A

w w w .lem.com

980706/8

Related parts for LA 55-P

LA 55-P Summary of contents

Page 1

... Current Transducer LA 55-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 Primary nominal r.m.s. current PN I Primary current, measuring range P R Measuring resistance @ M with ± ± ...

Page 2

... Dimensions LA 55-P (in mm 0.0394 inch) Bottom view Standard 00 or N° SP.. Front view Mechanical characteristics General tolerance Primary through-hole Fastening & connection of secondary Recommended PCB hole LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Secondary terminals swiss Terminal + : supply voltage + 12 ...

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