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LA125-P bảng dữ liệu(PDF) 1 Page - LEM

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LA125-P bảng dữ liệu(HTML) 1 Page - LEM

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Current Transducer LA 125-P
For the electronic measurement of currents : DC, AC, pulsed...,
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
125
A
I
P
Primary current, measuring range
0 .. ± 200
A
R
M
Measuring resistance @
T
A = 70°C
T
A = 85°C
R
M min RM max
R
M min RM max
with ± 12 V
@ ± 125 A
max
5
52
14
50
@ ± 200 A
max
5
20
14
18
with ± 15 V
@ ± 125 A
max
25
74
40
72
@ ± 200 A
max
25
34
40 1) 40 1)
I
SN
Secondary nominal r.m.s. current
125
mA
K
N
Conversion ratio
1 : 1000
V
C
Supply voltage (± 5 %)
± 12 .. 15
V
I
C
Current consumption
16 (@ ± 15 V) + I
S mA
V
d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
3
kV
Accuracy - Dynamic performance data
X
Accuracy @ I
PN , TA = 25°C
@ ± 15 V (± 5 %)
± 0.60
%
@ ± 12 .. 15 V (± 5 %)
± 0.80
%
ε
L
Linearity
< 0.15
%
Typ
Max
I
O
Offset current @ I
P = 0, TA = 25°C
± 0.40
mA
I
OM
Residual current 2) @ I
P = 0, after an overload of 3 x IPN
± 0.50
mA
I
OT
Thermal drift of I
O
0°C .. + 70°C
± 0.15 ± 0.50
mA
- 25°C .. + 85°C
± 0.15 ± 0.60
mA
t
ra
Reaction time @ 10 % of I
P max
< 500
n s
t
r
Response time 3) 4) @ 90 % of I
P max
< 1
µs
di/dt
di/dt accurately followed 4)
> 200
A/µs
f
Frequency bandwidth 4) (- 1 dB)
DC .. 100
kHz
General data
T
A
Ambient operating temperature
- 25 .. + 85
°C
T
S
Ambient storage temperature
- 40 .. + 90
°C
R
S
Secondary coil resistance @
T
A = 70°C
32
T
A = 85°C
33.5
m
Mass
40
g
Standards 5)
EN 50178
Notes : 1) Measuring range limited to ± 180 A
max
2) The result of the coercive field of the magnetic circuit
3) With a di/dt of 100 A/µs
4) The primary conductor is best filling the through-hole and/or the return
of the primary conductor is above the top of the transducer
5) A list of corresponding tests is available
Features
Closed loop (compensated) current
transducer using the Hall effect
Printed circuit board mounting
Insulated plastic case recognized
according to UL 94-V0.
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
=
125 A
980716/5
LEM Components
ww w .lem.com


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