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
Page 1/3
070125/4
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Current Transducer APR-B420L
Isolation characteristics
V
b
Rated isolation voltage rms
300
V
with IEC 61010-1 standards and following conditions :
- Single insulation
- Over voltage category CAT III
- Pollution degree PD2
- Heterogeneous field
Rms voltage for AC isolation test, 50 Hz, 1min
5
kV
Partial discharge extinction voltage rms @ 10 pC
1.5
kV
Impulse withstand voltage 1.2/50
µs
6.1
kV
If insulated cable is used for the primary circuit, the voltage category
could be improved with the following table :
Cable insulation (primary)
Category
HAR 05
600V CAT III
HAR 07
1000V CAT III
Creepage distance
5.5
mm
Clearance distance
5.5
mm
Comparative tracking index (Group I)
600
V
d
V
e
V
w
dCp
dCl
CTI
Safety
This transducer must be used in electric/electronic equipment with respect to
applicable standards and safety requirements in accordance with the
manufacturer’s operating instructions.
Installation and maintenance should be done with main power supply
disconnected.
The operator must have an accreditation to install this material.
Caution! Risk of electrical shock
When operating the transducer, certain parts of the module can carry hazardous
voltage (e.g. primary conductor, power supply).
Ignoring this warning can lead to injury and/or cause serious damage.
The user must take care of all protection guarantee against electrical shock.
This transducer is a built-in device, whose conducting parts must be inaccessible
after installation. A protective housing or additional shield could be used.
Page 2/3
070125/4
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Dimensions AP(R)-B420L
(unit : mm, 1mm = 0.0394 inch)
Front View
55
20
Range Selection Switch
14.80
4.70
Left View
16.40
40(distance between screws)
37
33.50
Axis of aperture
67
21
25
18.50
Plug-in connector included : XW4B-03C1-H1 (OMRON)
18.50
Bottom View
Connections
Load
4-20mA
(Controller,
Meter, etc,)
24 VDC Power
(-)
(+)
•
Wires up to
∅
2 mm
•
Female connector provided (spring terminal blocks)
•
User-friendly spring-cage connection for no-tool direct
conductor connection
AP/APR
Mechanical characteristics
•
General tolerance
± 1 mm
∅
18.5 mm
2 holes
∅
4.0 mm
•
Primary aperture
•
Panel mounting
Output
Connector
3none2(-) 1(+)
Front
Range Switch
•
Distance between holes
40.0 mm
For panel mounting, replace M4 screws by new one (not
supplied) with appropriate length to panel´s thickness.
Load Resistance v s. Supply Voltage
30
+24VDC
OUT
Ip
Supply Voltage
25
20
15
10
5
0
0
50
100
150
200
250
300
350
400
Is
GND
Load Resistance
DIN size35.50
69
Page 3/3
070125/4
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Power technology
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