Electrical data
Primary Nominal Current Analogue Output Signal Type
IPN (A.t.RMS) IOUT (mA)
10,25,50 4-20 AP 50 B420L
50,75,100 4-20 AP 100 B420L
100,150,200 4-20 AP 200 B420L
200,300,400 4-20 AP 400 B420L
R LLoad resistance < 350 Ω
VCSupply voltage (loop powered) +24 V DC
VdR.m.s. voltage for AC isolation test, 50/60Hz, 1 mn 5kV
Limitation of output current < 25 mA
Accuracy-Dynamic performance data
XAccuracy @ IPN, TA = 25°C (without offset) < ±1 % of IPN
εεLLinearity (0 .. ± IPN)< ±0.5 % of IPN
IOE Electrical offset current, TA = 25°C 4mA
IOT Thermal drift of IOE ±1 µA/K
TCεεGThermal drift of the gain (% of reading) ±0.1 %/K
t rResponse time @ 90% of IP < 500 ms
fFrequency bandwidth (-3 dB) 10 .. 6000 Hz
General data
TAAmbient operating temperature -20 .. +60 °C
TSAmbient storage temperature -20 .. +85 °C
mMass 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
Notes : Installation and maintenance should be done with power supply disconnected.
AC Current transducer AP-B420L
Split core transducer for the electronic measurement AC waveforms
current, with galvanic isolation between the primary (High power) and
the secondary circuits (Electronic circuit). Switch selectable ranges
and RMS 4-20mA current output.
IPN = 10 .. 400 A
030708/0
Features
•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
• Automation systems
Analog current reading for remote
monitoring (e.g. motor) and software
alarms.
• Panelmeters
Simple connection displays power
consumption.
LEM Components www.lem.com
Preliminary
Dimensions AP(R)-B420L (unit : mm, 1mm = 0.0394 inch)
Mechanical characteristics
• General tolerance ±1 mm
• Primary aperture ∅ 18.5 mm
• Panel mounting 2 holes ∅ 4.0 mm
• Distance between holes 40.0 mm
For panel mounting, replace M4 screws by new one (not supplied) with appropriate length to panel´s thickness.
Connections
• Wires up to 2 mm ∅
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Load Resistance vs. Supply Voltage
0
5
10
15
20
25
30
0 100 200 300 400
Load Resistance
Supply Voltage
Load
(+)
(+)
2(-)
(-)
(-)
1(+)
3none
Output
Range Switch
4-20mA
(Controller,
Meter, etc,)
AP/APR
Connector
Front