AKR-B420L Datasheet, PDF (1/2 Pages) LEM – AC Current transducer

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
Features
Primary Nominal Current
I_PN (A.t.RMS)
Analogue Output Signal¹⁾
I_OUT (mA)
Type
RoHS
Date Code
2,5
10,20,50
100,150,200
4-20
4-20
4-20
AKR 5 B420L JUNE 2006
AKR 50 B420L planned
AKR 200 B420L planned
Vc Supply voltage (Loop powered)
24
R Load resistance
L
see power supply diagram
V_b Rated voltage (CAT III, PD2)
150
V_d RMS Isolation voltage test, 50 Hz, 1mn
3
f
Frequency bandwith
10-400
Accuracy - Dynamic performance data
V DC
V AC
kV AC
Hz
X Accuracy @ I , T =25°C
PN A
t
Response time @ 90% of I
r
PN
±1
%
< 600
mS
• VFD and SCR waveforms current
measurement
• True RMS responding
• Split core box
• Current output
• Loop powered transducers
• Panel mounting
• Jumper selectable ranges
Advantages
• Large aperture
• High isolation between primary and
secondary circuits
• Easy to mount
Applications
General data
• VFD Controlled Loads: VFD output
T
Ambient operating temperature (0-95% RH)
A
T
Ambient storage temperature
S
m Mass
Safety
EMC
- 20 ..+ 50
°C
- 20 ..+ 85
°C
120
g
IEC 61010-1
EN 61326
indicates how the motor and
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
Selecting the transducer
VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output
measure power supply or ballast
input power.
waveforms are rough approximations of a sine wave. There are numerous spikes
and dips in each cycle. AKR transducers use a mathematical algorithm called
Options on request
“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
• DIN mounting
nonlinear loads or in “noisy” power environments.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
060816/5
Page 1/2
LEM
www .lem.com