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參數(shù)資料
| 型號(hào)： | LA125P |
| 廠商： | LEM |
| 英文描述： | CURRENT TRANSDUCER LA 125-P |
| 中文描述： | 洛杉磯125電流互感器磷 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 84K |
| 代理商： | LA125P |
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
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
125
0 .. ± 200
A
A
T
A
= 70°C
R
M min
R
M max
R
M min
R
M max
5
52
5
20
25
74
25
34
T
A
= 85°C
with ± 12 V
@ ± 125 A
max
@ ± 200 A
max
@ ± 125 A
max
@ ± 200 A
max
14
14
40
50
18
72
with ± 15 V
40
1)
40
1)
I
SN
K
N
V
C
I
C
V
d
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
125
1 : 1000
± 12 .. 15
16
(@ ± 15 V) +
I
S
mA
3
mA
V
kV
Accuracy - Dynamic performance data
X
Accuracy @
I
PN
,
T
A
= 25°C
@ ± 15 V (± 5 %)
@ ± 12 .. 15 V (± 5 %)
± 0.60
± 0.80
< 0.15
%
%
%
e
L
Linearity
Typ
Max
± 0.40
± 0.50
I
O
I
OM
I
OT
Offset current @
I
P
= 0,
T
= 25°C
Residual current
2)
@
I
P
= 0, after an overload of 3 x
I
PN
Thermal drift of
I
O
mA
mA
mA
mA
0°C .. + 70°C
- 25°C .. + 85°C
± 0.15 ± 0.50
± 0.15 ± 0.60
t
ra
t
di/dt
f
Reaction time @ 10 % of
I
Response time
3) 4)
@ 90 % of
I
P max
di/dt
accurately followed
4)
Frequency bandwidth
4)
(- 1 dB)
< 500
< 1
> 200
DC .. 100
ns
μs
A/μs
kHz
General data
T
A
T
S
R
S
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
- 25 .. + 85
- 40 .. + 90
32
33.5
40
EN 50178
°C
°C
T
A
= 70°C
T
A
= 85°C
m
Mass
Standards
5)
g
Notes :
1)
Measuring range limited to ± 180 A
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
LE M C omponents
www.lem.com
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