LA 25-NP LEM, LA 25-NP Datasheet
LA 25-NP
Manufacturer Part Number
LA 25-NP
Description
CURRENT SENSOR
Manufacturer
LEM
Datasheet
1.LA_25-NP.pdf
(2 pages)
Specifications of LA 25-NP
Current Measuring Range Ac
± 36A
Operating Frequency Range
DC To 150kHz
Sensor Output
Closed Loop
Accuracy
± 0.5%
Response Time
1µs
Rohs Compliant
Yes
Sensor Operating Frequency
DC To 150kHz
Accuracy %
0.5%
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).
I
I
R
I
K
V
I
V
V
X
I
I
I
t
di/dt
f
T
T
R
R
R
m
Notes :
LEM
PN
P
SN
C
O
OM
OT
r
C
A
S
d
b
M
N
L
P
S
IS
Electrical data
Accuracy - Dynamic performance data
General data
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
R.m.s. rated voltage
Typical accuracy @ I
Linearity error
Offset current
Residual current
Thermal drift of I
Response time
di/dt accurately followed
Frequency bandwidth (- 1 dB)
Ambient operating temperature
Ambient storage temperature
Primary resistance per turn
Secondary coil resistance
Isolation resistance @ 500 V, T
Mass
Standards
1)
2)
3)
4)
Pollution class 2
Measurement carried out after 15 mn functioning
The result of the coercive field of the magnetic circuit
With a di/dt of 100 A/µs.
with ± 15 V
2)
4)
@ I
O
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
3)
@ 90 % of I
@ I
P
= 0, T
1)
PN
P
, safe separation
= 0, after an overload of 3 x I
, T
basic isolation
16080
A
A
@ ± 25 At
@ ± 36 At
= 25°C
= 25°C
PN
A
@ T
@ T
@ T
= 25°C
+ 25°C .. + 70°C
- 25°C .. + 85°C
- 40°C .. + 85°C
A
A
A
max
max
0°C .. + 25°C
= 25°C
= 70°C
= 85°C
R
T
100 320
100 190
M min
A
= 70°C
PN
R
M max
± 0.05 ± 0.15
± 0.05 ± 0.15
± 0.06 ± 0.25
± 0.10 ± 0.35
25
0 .. ± 36
25
1-2-3-4-5 : 1000
± 15
10 + I
2.5
600
1700
± 0.5
< 0.2
< 1
> 50
DC .. 150
- 40 .. + 85
- 45 .. + 90
< 1.25
110
115
> 1500
22
EN 50178 : 1997
Typ
R
100 315
100 185
M min
T
S
A
± 0.5
± 1.2
Max
= 85°C
R
M max
A/µs
m
kHz
M
mA
mA
mA
mA
mA
mA
mA
mA
kV
µs
°C
°C
At
At
%
%
V
V
V
g
I
Features
Advantages
Applications
PN
Closed loop (compensated) multi-
range current transducer using the
Hall effect
Insulated 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.
= 5-6-8-12-25 A
w w w .lem.com
060327/13
Page 1/2
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LA 25-NP Summary of contents
Page 1
... 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). 16080 Electrical data I Primary nominal r.m.s. current PN I Primary current, measuring range P R Measuring resistance @ M with ± ...
Page 2
... Dimensions LA 25-NP (in mm 0.0394 inch) Bottom view Back view primary maximum output current Mechanical characteristics General tolerance Fastening & connection of primary Fastening & connection of secondary Recommended PCB hole LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. ...