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LA25-NP-SP8 датащи(PDF) 1 Page - LEM

номер детали LA25-NP-SP8
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-NP-SP8 датащи(HTML) 1 Page - LEM

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9November2011/version 3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
Current Transducer LA 25-NP/SP8
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic isolation between the primary circuit and the secondary
circuit.
Electrical data
I
PN
Primary nominal current rms
2
A
I
PM
Primary current, measuring range
0 .. ± 3
A
R
M
Measuring resistance
R
M min
R
M max
with ± 15 V
@ ± 2 A
max
100
320
@ ± 3 A
max
100
190
I
SN
Secondary nominal current rms
24
mA
K
N
Conversion ratio
12 : 1000
V
C
Supply voltage (± 5 %)
± 15
V
I
C
Current consumption
10 +
I
S
mA
Accuracy - Dynamic performance data
X
Accuracy @
I
PN, TA = 25°C
± 0.5
%
ε
L
Linearity error
< 0.2
%
Typ
Max
I
O
Offset current 1) @
I
P = 0, TA = 25°C
± 0.05 ± 0.15
mA
I
OM
Magnetic offset current 2) @
I
P = 0 and specified RM,
after an overload of 3 x
I
PN
± 0.05 ± 0.15
mA
I
OT
Temperature variation of
I
O
0°C .. + 25°C
± 0.06 ± 0.25
mA
+ 25°C .. + 70°C
± 0.10 ± 0.35
mA
t
r
Response time 3) to 90 % of
I
PN step
< 1
µs
di/dt
di/dt accurately followed
> 50
A/µs
BW
Frequency bandwidth (- 1 dB)
DC .. 150
kHz
General data
T
A
Ambient operating temperature
0 .. + 70
°C
T
S
Ambient storage temperature
- 25 .. + 85
°C
R
P
Primary coil resistance
@
T
A = 25°C
< 12.4
mΩ
R
S
Secondary coil resistance
@
T
A = 70°C
110
L
P
Insertion inductance
8
µH
R
IS
Isolation resistance @ 500 V,
T
A = 25°C
> 1500
MΩ
m
Mass
22
g
Standards
EN 50178: 1997
Notes: 1) Measurement carried out after 15 mn functioning
2)
The result of the coercive field of the magnetic circuit
3)
With a di/dt of 100 A/µs.
I
PN =
2 A
Features
● Closed loop (compensated)
current transducer using the Hall
effect
● Isolated plastic case recognized
according to UL 94-V0.
Special features
I
PN = 2 A
I
PM = 0 .. ± 3 A
K
N = 12 : 1000.
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.
Application domain
● Industrial.
16094


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