AC Current transducer APR-B420L
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.
I
PN
= 10 .. 400 A
Electrical data
Primary Nominal Current
I
PN
(A.t.rms)
10,25,50
50,75,100
100,150,200
200,300,400
Output Current
I
OUT
(mA)
4-20
4-20
4-20
4-20
Type
APR
APR
APR
APR
50 B420L
100 B420L
200 B420L
400 B420L
RoHS since
date code
planned
planned
46317
46291
Features
•
VFD and SCR waveforms current
measurement
•
True RMS output
•
Split core type
•
Loop powered 4-20mA current output
•
DIN mounting & Panel mounting
•
Eliminates insertion loss
•
Switch selectable ranges
•
Isolated plastic case recognized
according to UL94-V0.
R
L
V
C
I
SL
Î
P
Load resistance
(See the graph "Load Resistance vs. Supply Voltage") < 350
Ω
Supply voltage (loop powered)
+ 12 .. 24 V DC
Output current limitation
< 25
mA
Overload capability
no limitation
Accuracy-Dynamic performance data
Advantages
< ± 1 % of
I
PN
< ± 0.5 % of
I
PN
4
mA
±1
µA/K
± 0.1
%/K
< 400
ms
30 .. 6000 Hz
•
Large aperture for cable up to
Ø18mm
•
High isolation between primary and
secondary circuits
•
Easy installation
ε
X
L
I
OE
TCI
OE
TCI
OUT
t
r
BW
Accuracy @
I
PN
,
T
A
= 25°C (excluding offset)
Linearity error (0 .. ±
I
PN
)
Electrical offset current @
T
A
= 25°C
Temperature coefficient of
I
OE
Temperature coefficient of
I
OUT
(% of reading)
Response time to 90% of
I
PN
step
Frequency bandwidth (± 1 %)
Applications
•
VFD Controlled Loads:
VFD output indicates how the motor
and attached load are operating.
•
SCR Controlled Loads:
Acurate measurement of phase
angle fired or burst fired (time
proportioned)
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.
General data
T
A
T
S
m
IPxx
Ambient operating temperature
Ambient storage temperature
Mass
Protection degree
- 20 .. + 60
- 20 .. + 85
90
IP20
°C
°C
g
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.
www.lem.com