AKR-C420L Datasheet, PDF (1/2 Pages) LEM – AC Current transducer

AC Current transducer AKR-C420L
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 CurrentAnalogue Output Signal¹⁾
I (A.t.RMS)
PN
I (mA)
OUT
Type
RoHS
Date Code
2,5
10,20,50
100,150,200
4-20
4-20
4-20
AKR 5 C420L
AKR 50 C420L
AKR 200 C420L
JULY 2006
planned
JULY 2006
Vc Supply voltage (Loop powered)
24
R_L Load resistance
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
20-100
V DC
VAC
kV AC
Hz
Features
• VFD and SCR waveforms current
measurement
• True RMS responding
• 4-20 mA Current output
• Loop powered transducers
• Panel mounting
• Accurate
• Jumper selectable ranges
Advantages
Accuracy - Dynamic performance data
X
Accuracy @ I_PN, T_A=25°C
t_r
Response time @ 90% of I_PN
±1
< 600
• Large aperture
• High isolation between primary and
secondary circuits
%
• Easy to mount
mS
Applications
General data
T_A Ambient operating temperature (0-95% RH)
T_S Ambient storage temperature
m Mass
Safety
EMC
-20 ..+ 50
-20 ..+ 85
90
IEC 61010-1
EN 61326
Note: ¹⁾ For 4-20mA output model, no saturation output up to 23 mA.
• VFD Controlled Loads:
VFD output indicates how the motor
°C
and attached load are operating.
°C
• SCR Controlled Loads:
g
Acurate measurement of phase
angle fired or burst fired (time
proportioned) SCRs.
• Switching Power Supplies and
Electronic Ballasts:
Selecting the transducer
VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output
True RMS sensing is the most
accurate way to 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.
060816/6
Page 1/2
LEM
www .lem.com