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LA25-SP14 датащи(PDF) 1 Page - LEM

номер детали LA25-SP14
подробное описание детали  Current Transducer
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производитель  LEM [LEM]
домашняя страница  http://www.lem.co.jp/HQ/en
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LA25-SP14 датащи(HTML) 1 Page - LEM

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Current Transducer LA 25-NP/SP14
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
PN
Primary nominal r.m.s. current
0.25
A
I
P
Primary current, measuring range
0 .. ± 0.36
A
R
M
Measuring resistance
R
M min
R
M max
with ± 15 V
@ ± 0.25 A
max
100
320
@ ± 0.36 A
max
100
190
I
SN
Secondary nominal r.m.s. current
25
mA
K
N
Conversion ratio
100 : 1000
V
C
Supply voltage (± 5 %)
± 15
V
I
C
Current consumption
10 + I
S
mA
V
d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
2.5
kV
V
b
R.m.s. rated voltage 1), safe separation
600
V
basic isolation
1700
V
Accuracy - Dynamic performance data
X
Typical accuracy @ I
PN , TA = 25°C
± 0.5
%
ε
L
Linearity error
< 0.2
%
Typ
Max
I
O
Offset current 2) @ I
P = 0, TA = 25°C
± 0.05 ± 0.15
mA
I
OM
Residual current 3) @ I
P = 0, after an overload of 3 x IPN
± 0.05 ± 0.15
mA
I
OT
Thermal drift of I
O
- 10°C .. + 70°C
± 0.10 ± 0.35
mA
t
r
Response time 4) @ 90 % of I
PN
< 1
µs
f
Frequency bandwidth (- 1 dB)
DC .. 150
kHz
General data
T
A
Ambient operating temperature
- 10 .. + 70
°C
T
S
Ambient storage temperature
- 25 .. + 85
°C
R
P
Primary coil resistance @ T
A = 25°C
< 860
m
R
S
Secondary coil resistance @ T
A = 70°C
110
L
P
Primary insertion inductance
496
µ H
R
IS
Isolation resistance @ 500 V, T
A = 25°C
> 1500
M
m
Mass
22
g
Standards
EN 50178 : 1997
Notes : 1) Pollution class 2
2) Measurement carried out after 15 mn functioning
3) The result of the coercive field of the magnetic circuit
4) With a di/dt of 100 A/µs.
Features
Closed loop (compensated) multi-
turns current transducer using the
Hall effect
Printed circuit board mounting
Insulated plastic case recognized
according to UL 94-V0.
Special features
I
PN =
0.25 A
I
P
= 0 .. ± 0.36 A
K
N =
100 : 1000
T
A
= - 10°C .. + 70°C.
Advantages
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.
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.
I
PN
=
0.25 A
060405/4
LEM
www .lem.com
16094


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