Current Transducer LAS 50-TP
For the electronic measurement of currents : DC, AC, pulsed, mixed,
with a galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
I
PN
= 50 A
16069
Electrical data
I
PN
I
P
V
OUT
R
L
R
OUT
V
REF
Primary nominal r.m.s. current
Primary current, measuring range
Analog output voltage @
Output load resistance
Output internal resistance
Internal reference voltage
V
REF
load resistance
V
REF
internal resistance
V
REF
external voltage range
Max. output capacitive load
Supply voltage (± 5 %)
Current consumption @
V
C
= 5 V
50
A
0 .. ± 150
A
V
REF
±
(0.625
·
I
P
/I
PN
) V
V
REF
± 0.025
V
≥
2
k
Ω
<
20
Ω
2.5 ± 0.025
V
≥
1
MΩ
200
Ω
2.0 .. 2.8
V
1
nF
5
V
18
mA
Features
•
Current transducer using
•
•
•
•
Eta-technology
Unipolar voltage supply
Insulated plastic case recognized
according to UL 94-V0
Compact design for PCB mounting
Extended measuring range.
I
P
I
P
= 0
C
L
V
C
I
C
Advantages
•
•
•
•
•
•
•
Excellent accuracy
Very good linearity
Very low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
High immunity to external
interference
•
Current overload capability.
typ
Accuracy - Dynamic performance data
X
ε
L
Accuracy
1)
@
I
PN
,
T
A
= 25°C
Linearity error 0 ..
I
PN 2)
- 40°C.. + 85°C
- 40°C.. + 85°C
- 10°C.. + 85°C
- 40°C.. - 10°C
<±1
< 0.7
Typ
80
50
150
400
Max
120
80
300
700
%
%
ppm/K
ppm/K
ppm/K
ppm/K
mV
ns
ns
A/µs
mVpp
kHz
TCV
OUT
Thermal drift of
V
OUT
@
I
P
= 0
TCV
OUT
/
V
REF
Thermal drift of
V
OUT
/
V
REF
@
I
P
= 0
TC
ε
G
Thermal drift of the gain
V
OM
t
ra
t
r
di/dt
f
Applications
•
AC variable speed drives and servo
•
•
•
•
•
motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding
applications.
Residual voltage @
I
P
= 0, after an overload of 2 x
I
PN DC
Reaction time @ 10 % of
I
PN
Response time @ 90 % of
I
PN
di/dt accurately followed
Output noise without external filter
Frequency bandwidth (- 1 dB)
±5
< 200
< 500
> 100
< 10
DC .. 100
General data
T
A
T
S
m
Ambient operating temperature
Ambient storage temperature
Mass
Standards
- 40 .. + 85
- 40 .. + 100
°C
°C
Application domain
•
Industrial.
20
g
EN 50178 : 1997
All Data are given with a R
L
= 10 kΩ
Notes :
1)
Excluding electrical, magnetic offsets and linearity
2)
Including magnetic offset.
Copyright protected.
060504/14
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 1/3
LEM
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Current Transducer LAS 50-TP
Isolation characteristics
V
d
V
w
V
e
dCp
dCl
CTI
R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn
Impulse withstand voltage 1.2/50 µs
R.m.s. voltage for partial discharge extinction @ 10pC
Creepage distance
Clearance distance
3)
Comparative Tracking Index (Group III a)
3)
5
>8
>2
Min
10.70
10.70
175
kV
kV
kV
mm
mm
Application examples
According to EN 50178 and IEC 61010-1 standards
and following conditions :
•
Over voltage category OV 3
•
Pollution degree PD2
•
Non-uniform field
EN 50178
dCp, dCI
Single isolation
Reinforced isolation
3)
IEC 61010-1
Nominal voltage
1000 V
500 V
Rated isolation voltage
1000 V
500 V
Note :
On PCB with soldering pattern UTEC93-703.
Safety
This transducer must be used in electric/electronic equipment with respect to
applicable standards and safety requirements in accordance with the following
manufacturer's operating instructions.
Caution, risk of electrical shock
When operating the transducer, certain parts of the module can carry hazardous
voltage (eg. primary busbar, power supply).
Ignoring this warning can lead to injury and/or cause serious damage.
This transducer is a built-in device, whose conducting parts must be inaccessible
after installation.
A protective housing or additional shield could be used.
Main supply must be able to be disconnected.
060504/14
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 2/3
LEM
w w w .lem.com
Dimensions LAS 50-TP
(in mm. 1 mm = 0.0394 inch)
Bottom view
Connection
Front view
Left view
Num b e r of
p rim a ry turns
I
P N
1
P rim a ry current
N o m inal
[A ]
50
M a xim a l
I
P
150
[A ]
N o m ina l output
voltage
P rim a ry
r e s i s ta n c e
P rim a ry
i n s e r ti o n
i n d u c ta n c e
L
P
[µH]
0 .0 0 8
V
OUT
[V ]
R
P
0 .1 2
[mΩ]
V
R E F
± 0 .6 2 5
Mechanical characteristics
•
General tolerance
•
Fastening & connection of primary
Recommended PCB hole
•
Fastening & connection of secondary
Recommended PCB hole
± 0.2 mm
6 pins 1.4 x 1 mm
2 mm
4 pins 0.7 x 0.6 mm
1.2 mm
Output Voltage - Primary Current
V
OUT
[ V ]
5
4.375
3.125
2.5
1.875
0.625
Remarks
•
V
OUT
is positive when
I
P
flows from terminals "IN" to
terminals "OUT".
•
Temperature of the primary conductor should not exceed
100°C.
•
This is a standard model. For different versions
please contact us.
-
I
Pmax
-
I
PN
0
I
PN
I
Pmax
I
P
[ A ]
060504/14
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 3/3
LEM
w w w .lem.com
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