LA25-SP7 参数 Datasheet PDF下载

Current Transducer LA 25-NP/SP7

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

mixed, with a galvanic isolation between the primary circuit

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

I

PN

=

2.5 A

16160

Electrical data

I

PN

I

PM

R

M

Primary nominal current rms

Primary current, measuring range

Measuring resistance

@ ± 2.5 A

maxi

@ ± 3.6 A

maxi

Secondary nominal current rms

Conversion ratio

Supply voltage (± 5 %)

Current consumption

with ± 15 V

2.5

0 .. ± 3.6

R

M mini

R

M maxi

100

320

100

190

25

10 : 1000

± 15

10 +

I

S

A

A

Ω

Ω

mA

V

mA

Features

•

Closed loop (compensated) multi-

turns current transducer using the

Hall effect

•

Isolated plastic case recognized

according to UL 94-V0.

I

SN

K

N

V

C

I

C

Special features

•

I

PN

= 2.5 A

•

I

PM

= 0 .. ± 3.6 A

•

K

N

= 10 : 1000.

Accuracy - Dynamic performance data

X

ε

L

Typical accuracy @

I

PN

,

T

A

= 25°C

Linearity error

Offset current @

I

P

= 0,

T

A

= 25°C

Magnetic offset current

3)

@

I

P

=

0, after an overload of 3 x

I

PN

Temperature variation of

I

O

0°C .. + 25°C

+ 25°C .. + 70°C

Response time

4)

to 90 % of

I

PN

step

Frequency bandwidth (- 1 dB)

2)

± 0.5

< 0.2

Typ Maxi

± 0.05 ± 0.15

± 0.05 ± 0.15

± 0.06 ± 0.25

± 0.10 ± 0.35

<1

DC .. 150

%

%

mA

mA

mA

mA

µs

kHz

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.

I

O

I

OM

I

OT

t

r

BW

General data

T

A

T

S

R

P

R

S

L

P

R

IS

m

Ambient operating temperature

Ambient storage temperature

Primary coil resistance @

T

A

= 25°C

Secondary coil resistance @

T

A

= 70°C

Insertion inductance

Isolation resistance @ 500 V,

T

A

= 25°C

Mass

Standards

0 .. + 70

°C

- 25 .. + 85

°C

< 8.5

m

Ω

110

Ω

5.5

µH

> 1500

MΩ

22

g

EN 50178: 1997

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

Notes:

1)

2)

3)

4)

Pollution class 2

Measurement carried out after 15 mn functioning

The result of the coercive field of the magnetic circuit

With a di/dt of 100 A/µs.

•

Industrial.

Page 1/3

070305/4

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

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