AKR-B420L 参数 Datasheet PDF下载

AC Current transducer AKR-B420L

A Split Core transducer for the electronic measurement AC waveforms

current, with galvanic isolation between the primary (High power) and

the secondary circuits (Electronic circuit). Jumper selectable ranges

and True RMS 4-20mA current output.

I

PN

= 2..200A

Electrical data

Primary Nominal Current

I

PN

(A.t.RMS)

2,5

10,20,50

100,150,200

Vc

R

L

V

b

V

d

f

Analogue Output Signal

1)

I

OUT

(mA)

4-20

4-20

4-20

AKR 5 B420L

Type

RoHS

Date Code

JUNE 2006

Features

•

VFD and SCR waveforms current

measurement

•

True RMS responding

•

Split core box

•

Current output

•

Loop powered transducers

•

Panel mounting

•

Jumper selectable ranges

AKR 50 B420L

planned

AKR 200 B420L

planned

24

V DC

V AC

kV AC

Hz

Supply voltage (Loop powered)

Load resistance

see power supply diagram

Rated voltage (CAT III, PD2)

150

RMS Isolation voltage test, 50 Hz, 1mn

3

Frequency bandwith

10-400

Advantages

•

Large aperture

•

High isolation between primary and

secondary circuits

•

Easy to mount

Accuracy - Dynamic performance data

X

t

r

Accuracy @ I

PN

, T

A

=25°C

Response time @ 90% of I

PN

±

1

< 600

%

mS

Applications

•

VFD Controlled Loads: VFD output

indicates how the motor and

General data

T

A

T

S

m

Ambient operating temperature (0-95% RH)

Ambient storage temperature

Mass

Safety

EMC

- 20 ..+ 50

- 20 ..+ 85

120

IEC 61010-1

EN 61326

°C

°C

g

attached load are operating.

•

SCR Controlled Loads:

Acurate measurement of phase

angle fired or burst fired (time

proportioned) SCRs.

•

Switching Power Supplies and

Electronic Ballasts: True RMS sensing

Note:

1)

For 4-20mA output model, no saturation output up to 23 mA.

is the most accurate way to

measure power supply or ballast

input power.

Selecting the transducer

VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output

waveforms are rough approximations of a sine wave. There are numerous spikes

and dips in each cycle. AKR transducers use a mathematical algorithm called

“True RMS,” which integrates the actual waveform over time. True RMS is the only

way to accurately measure distorted AC waveforms.

Select AKR transducers for

nonlinear loads or in “noisy” power environments.

Options on request

•

DIN mounting

060816/5

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

LEM

www .lem.com