LA25-NP

Manufacturer Part NumberLA25-NP
ManufacturerETC-unknow
LA25-NP datasheet
 


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Current Transducer LA 25-NP
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).
Electrical data
I
Primary nominal r.m.s. current
PN
I
Primary current, measuring range
P
R
Measuring resistance
M
with ± 15 V
@ ± 25 At
@ ± 36 At
I
Secondary nominal r.m.s. current
SN
K
Conversion ratio
N
V
Supply voltage (± 5 %)
C
I
Current consumption
C
V
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
d
1)
V
R.m.s. rated voltage
, safe separation
b
basic isolation
Accuracy - Dynamic performance data
X
Accuracy @ I
, T
= 25°C
PN
A
Linearity
L
I
Offset current
2)
@ I
= 0, T
= 25°C
O
P
A
I
Residual current
3)
@ I
= 0, after an overload of 3 x I
OM
P
I
Thermal drift of I
OT
O
t
Response time
4)
@ 90 % of I
r
di/dt
di/dt accurately followed
f
Frequency bandwidth (- 1 dB)
General data
T
Ambient operating temperature
A
T
Ambient storage temperature
S
R
Primary resistance per turn @ T
P
R
Secondary coil resistance @ T
S
R
Isolation resistance @ 500 V, T
IS
m
Mass
5)
Standards
1)
Notes :
Pollution class 2
2)
Measurement carried out after 15 mn functionning
3)
The result of the coercive field of the magnetic circuit
4)
With a di/dt of 100 A/µs
5)
A list of corresponding tests is available
LEM Components
25
0 .. ± 36
R
R
M min
100
320
max
100
190
max
25
1-2-3-4-5 : 1000
± 15
10 + I
S
2.5
600
1700
± 0.5
< 0.2
Typ
Max
± 0.05 ± 0.15
± 0.05 ± 0.15
PN
0°C .. + 25°C
± 0.06 ± 0.25
+ 25°C .. + 70°C
± 0.10 ± 0.35
< 1
P max
> 50
DC .. 150
0 .. + 70
- 25 .. + 85
= 25°C
< 1.25
A
= 70°C
110
A
= 25°C
> 1500
A
22
EN 50178
I
= 5-6-8-12-25 A
PN
Features
At
At
Closed loop (compensated) multi-
M max
range current transducer using the
Hall effect
Insulated plastic case recognized
mA
according to UL 94-V0.
V
Advantages
mA
kV
Excellent accuracy
V
Very good linearity
V
Low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
%
High immunity to external
%
interference
Current overload capability.
mA
mA
Applications
mA
mA
AC variable speed drives and servo
µs
motor drives
A/µs
Static converters for DC motor drives
kHz
Battery supplied applications
Uninterruptible Power Supplies
(UPS)
Switched Mode Power Supplies
°C
(SMPS)
°C
Power supplies for welding
m
applications.
M
g
980909/8
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