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 (High
power)andthesecondarycircuits(Electroniccircuit).Switchselectable
ranges and True RMS 4-20mA current output.
Preliminary
Electrical data
Features
Primary Nominal Current
IPN (A.t.RMS)
Analogue Output Signal
IOUT (mA)
Type
· 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
· Split core type
50,75,100
100,150,200
200,300,400
· Loop powered 4-20mA current output
· DIN mounting & Panel mounting
· Eliminates insertion loss
· Switch selectable ranges
R L
VC
Vd
Loadresistance
Supplyvoltage(looppowered)
R.m.s. voltage for AC isolation test, 50/60Hz, 1 mn
Limitationofoutputcurrent
< 350
+24
5
W
V DC
kV
Advantages
< 25
mA
· Large aperture for cable up to Ø18mm
· High isolation between primary and
secondary circuits
Accuracy-Dynamic performance data
· Easy to mount
X
Accuracy @ IPN, TA = 25°C (without offset)
Linearity (0 .. ± IPN)
Electrical offset current, TA = 25°C
Thermal drift of IOE
Thermal drift of the gain (% of reading)
Response time @ 90% of IP
Frequencybandwidth(-3dB)
< ±1
< ±0.5 % of IPN
4
±1
±0.1
< 1000
10 .. 6000
% of IPN
e
Applications
L
IOE
IOT
mA
mA/K
%/K
ms
· VFD Controlled Loads:
TCe
G
VFD output indicates how the motor
and attached load are operating.
· SCR Controlled Loads:
t r
f
Hz
Acurate measurement of phase angle
fired or burst fired (time proportioned)
SCRs. Current measurement gives
faster response than temperature
measurement.
General data
TA
TS
m
Ambientoperatingtemperature
Ambientstoragetemperature
Mass
-20 .. +60
-20 .. +85
90
°C
°C
g
· Switching Power Supplies and
Electronic Ballasts:
Protectiontype
IP20
True RMS sensing is the most
accurate way to measure power
supply or ballast input power.
ReliableisolationaccordingtoEN50178,EN61010 300
VAC
mm
Creepagedistance
> 5.5
EMCinaccordancewithEN50082-2
PlasticaccordingtoUL94V0, CTI1
Notes : Installation and maintenance should be done with power supply disconnected.
030708/0
LEM Components
www.lem.com