Current Transducer LA 55-P
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic isolation between the primary circuit (high power) and
the secondary circuit (electronic circuit).
I
I
R
I
K
V
I
X
ε
I
I
I
t
t
di/dt
BW
T
T
R
m
Notes:
090519/14
PN
PM
SN
C
O
OM
OT
ra
r
A
S
C
L
M
N
S
Electrical data
Accuracy - Dynamic performance data
General data
1)
2)
3)
Primary nominal current rms
Primary current, measuring range
Measuring resistance
Secondary nominal current rms
Conversion ratio
Supply voltage (± 5 %)
Current consumption
Accuracy @ I
Linearity error
Offset current @ I
Magnetic offset current
Temperature variation of I
Reaction time to 10 % of I
Response time to 90 % of I
di/dt accurately followed
Frequency bandwidth (- 1 dB)
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance
Mass
Standards
Measuring range limited to ± 60 A
Measuring range limited to ± 55 A
Result of the coercive field of the magnetic circuit.
with ± 12 V
with ± 15 V
PN
, T
P
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
A
= 0, T
= 25°C
@ ± 50 A
@ ± 70 A
@ ± 50 A
@ ± 70 A
3)
after an overload of 3 x I
A
@ I
O
PN
= 25°C
@ ± 12 .. 15 V (± 5 %)
PN
step
P
step
= 0 and specified R
@ ± 15 V (± 5 %)
max
max
max
max
- 25°C .. + 85°C
- 40°C .. - 25°C
max
max
@ T
@ T
16019
A
A
= 70°C
= 85°C
T
R
10
10
50
50
A
M min
= 70°C
PN
M
,
R
100
50
160
90
M max
50
0 .. ± 70
50
1 : 1000
± 12 .. 15
10
± 0.65
± 0.90
< 0.15
Typ
± 0.1 ± 0.6
± 0.2 ± 1.0
< 500
< 1
> 200
DC .. 200
- 40 .. + 85
- 40 .. + 90
80
85
18
EN 50178: 1997
(@ ± 15 V) + I
T
R
60
60
135
135
A
M min
Max
± 0.2
± 0.3
= 85°C
1)
2)
R
95
60
155
135
M max
1)
2)
S
A/µs
kHz
mA
mA
mA
mA
mA
mA
°C
°C
ns
µs
%
%
%
Ω
Ω
Ω
Ω
Ω
Ω
V
A
A
g
I
Features
●
●
●
Advantages
●
●
●
●
●
●
●
●
Applications
●
●
●
●
●
●
Application domain
●
PN
Closed loop (compensated)
current transducer using the Hall
effect
Printed circuit board mounting
Isolated plastic case recognized
according to UL 94-V0.
Excellent accuracy
Very good linearity
Low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
High immunity to external
interference
Current overload capability.
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.
Industrial.
= 50 A
www.lem.com
Page 1/3