AC Current transducer APR-B420L
IPN = 10 .. 400 A
Split core transducer for the electronic measurement distorted AC
waveforms current, with galvanic isolation between the primary circuit
(power) and the secondary circuit (measurement). Switch selectable
ranges and True RMS 4-20mA current output.
Electrical data
Features
PrimaryNominalCurrent
IPN (A.t.rms)
Output Current
IOUT (mA)
Type
RoHS since
date code
· VFD and SCR waveforms current
measurement
· True RMS output
10,25,50
4-20
4-20
4-20
4-20
APR 50 B420L
APR 100 B420L
APR 200 B420L
APR 400 B420L
planned
planned
46317
50,75,100
100,150,200
200,300,400
· Split core type
46291
· Loop powered 4-20mA current output
· DIN mounting & Panel mounting
· Eliminates insertion loss
· Switch selectable ranges
· Isolated plastic case recognized
according to UL94-V0.
RL
Load resistance
(See the graph "Load Resistance vs. Supply Voltage") < 350
W
VC
ISL
ÎP
Supply voltage (loop powered)
Output current limitation
Overload capability
+ 12 .. 24 V DC
< 25 mA
no limitation
Advantages
Accuracy-Dynamic performance data
· Large aperture for cable up to
Ø18mm
· High isolation between primary and
secondary circuits
X
Accuracy @ IPN, TA = 25°C (excluding offset)
Linearity error (0 .. ± IPN)
< ± 1 % of IPN
< ± 0.5 % of IPN
e
L
IOE
Electrical offset current @ TA = 25°C
4
mA
mA/K
%/K
m s
TCIOE
TCIOUT
tr
Temperature coefficient of IOE
± 1
· Easy installation
Temperature coefficient of IOUT (% of reading)
Response time to 90% of IPN step
Frequency bandwidth (± 1 %)
± 0.1
< 400
Applications
BW
30 .. 6000 Hz
· VFD Controlled Loads:
VFD output indicates how the motor
and attached load are operating.
· SCR Controlled Loads:
General data
TA
Ambient operating temperature
Ambient storage temperature
Mass
- 20 .. + 60 °C
- 20 .. + 85 °C
TS
Acurate measurement of phase
angle fired or burst fired (time
proportioned)
m
90
g
IPxx
Protection degree
IP20
SCRs. Current measurement gives
faster response than temperature
measurement.
· Switching Power Supplies and
Electronic Ballasts:
True RMS sensing is the most
accurate way to measure power
supply or ballast input power.
Application domain
· Energy and Automation
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
070125/4
www.lem.com