LA55-TP/SP27(2000) 查看數據表（PDF） - LEM Industrial

零件编号

产品描述 (功能)

生产厂家

LA55-TP/SP27
(Rev.:2000)

Current Transducer

LEM Industrial 

Current Transducer LA 55-TP/SP27

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).

IPN = 50 A

Electrical data

IPN

Primary nominal r.m.s. current

IP

Primary current, measuring range

RM Measuring resistance

with ± 12 V

with ± 15 V

@ ± 50 Amax

@ ± 100 Amax

@ ± 50 Amax

@ ± 100 Amax

ISN Secondary nominal r.m.s. current

KN Conversion ratio

VC Supply voltage (± 5 %)

IC

Current consumption

Vd

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

Vb

R.m.s. rated voltage

50

A

0 .. ± 100

A

RM min

RM max

0

210 Ω

0

30 Ω

30

320 Ω

30

90

Ω

25

mA

1 : 2000

± 12 .. 15

V

10 (@±15V ) +IS m A

3.6

kV

600

V

Features

• Closed loop (compensated) current

transducer using the Hall effect

• Mounted on printed circuit board

• Insulated plastic case recognized

according to UL 94-V0.

Special features

• IP = 0 .. ± 100 A

• KN = 1 : 2000

• Vd = 3.6 kV

• TA = - 40°C .. + 85°C.

• Potted.

Accuracy - Dynamic performance data

X

Accuracy @ IPN, TA = 25°C

@ ± 15 V (± 5 %) ± 0.65

%

@ ± 12 .. 15 V (± 5 %) ± 0.90

%

εL

Linearity

< 0.15

%

Typ Max

IO

Offset current @ IP = 0, TA = 25°C

± 0.1 m A

IOM Residual current 1) @ IP = 0, after an overload of 3 x IPN

± 0.2 m A

IO T

Thermal drift of IO

- 25°C .. + 85°C ± 0.1 ± 0.3 m A

- 40°C .. - 25°C ± 0.2 ± 0.5 m A

t ra

tr

di/dt

f

Reaction time @ 10 % of IPN

Response time 2) @ 90 % of IPN

di/dt accurately followed

Frequency bandwidth (- 1 dB)

< 500

<1

> 200

DC .. 200

ns

µs

A/µ s

kHz

General data

TA

Ambient operating temperature

TS

Ambient storage temperature

R S Secondary coil resistance @ TA = 85°C

m Mass

Standards 3)

- 40 .. + 85

°C

- 50 .. + 90

°C

140

Ω

35

g

EN 50155

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.

Notes : 1) The result of the coercive field of the magnetic circuit

2) With a di/dt of 100 A/µs

3) A list of corresponding tests is available.

001127/2

LEM Components

w w w.lem.com

Share Link: