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

AC Current transducer APR-B420L
Split core transducer for the electronic measurement distorted AC
waveforms current, with galvanic isolation between the primary (High
power) and the secondary circuits (Electronic circuit). Switch selectable
ranges and True RMS 4-20mA current output.
I_PN = 10 .. 400 A
Preliminary
Electrical data
Primary Nominal Current
I_PN (A.t.RMS)
10,25,50
50,75,100
100,150,200
200,300,400
Analogue Output Signal
I_OUT (mA)
4-20
4-20
4-20
4-20
Type
APR 50 B420L
APR 100 B420L
APR 200 B420L
APR 400 B420L
R
Load resistance
L
< 350
Ω
V_C
Supply voltage (loop powered)
+24
V DC
V_d
R.m.s. voltage for AC isolation test, 50/60Hz, 1 mn 5
kV
Limitation of output current
< 25
mA
Accuracy-Dynamic performance data
X
ε_L
I_OE
ε ^IOT
TC _G
t
r
f
Accuracy @ I_PN, T_A = 25°C (without offset)
Linearity (0 .. ± I_PN)
Electrical offset current, T_A = 25°C
Thermal drift of I_OE
Thermal drift of the gain (% of reading)
Response time @ 90% of I
P
Frequency bandwidth (-3 dB)
< ±1 % of I_PN
< ±0.5 % of I_PN
4
mA
±1
µA/K
±0.1
%/K
< 1000
ms
10 .. 6000 Hz
General data
T
Ambient operating temperature
A
T
Ambient storage temperature
S
m
Mass
-20 .. +60 °C
-20 .. +85 °C
90
g
Protection type
IP20
Reliable isolation according to EN50178, EN61010 300
V AC
Creepage distance
> 5.5
mm
EMC in accordance with EN50082-2
Plastic according to UL94V0, CTI 1
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
Advantages
• Large aperture for cable up to Ø18mm
• High isolation between primary and
secondary circuits
• Easy to mount
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.
Notes : Installation and maintenance should be done with power supply disconnected.
LEM Components
030708/0
www.lem.com