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參數(shù)資料
| 型號： | LA25-NP |
| 廠商： | LEM |
| 英文描述： | Current Transducer LA 25-NP |
| 中文描述： | 電流傳感器洛杉磯25微粒 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 78K |
| 代理商： | LA25-NP |
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).
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance
25
0 .. ± 36
R
M min
100
100
At
At
R
M max
320
190
with ± 15 V
@ ± 25 At
max
@ ± 36 At
max
I
SN
K
N
V
C
I
C
V
d
V
b
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
1)
, safe separation
basic isolation
25
1-2-3-4-5 : 1000
± 15
10 +
I
S
2.5
600
1700
mA
V
mA
kV
V
V
Accuracy - Dynamic performance data
X
e
L
Accuracy @
I
PN
,
T
A
= 25°C
Linearity
± 0.5
< 0.2
%
%
Typ
± 0.05 ± 0.15
Max
I
O
I
OM
I
OT
Offset current
2)
@
I
= 0,
T
= 25°C
Residual current
3)
@
I
P
= 0, after an overload of 3 x
I
PN
± 0.05 ± 0.15
Thermal drift of
I
O
mA
mA
mA
mA
0°C .. + 25°C
+ 25°C .. + 70°C
± 0.06 ± 0.25
± 0.10 ± 0.35
t
di/dt
f
Response time
4)
@ 90 % of
I
P max
di/dt
accurately followed
Frequency bandwidth (- 1 dB)
< 1
> 50
DC .. 150
μs
A/μs
kHz
General data
T
A
T
S
R
P
R
S
R
IS
m
Ambient operating temperature
Ambient storage temperature
Primary resistance per turn @
T
= 25°C
Secondary coil resistance @
T
A
= 70°C
Isolation resistance @ 500 V,
T
A
= 25°C
Mass
Standards
5)
0 .. + 70
- 25 .. + 85
< 1.25
110
> 1500
22
EN 50178
°C
°C
m
M
g
Notes :
1)
Pollution class 2
2)
Measurement carried out after 15 mn functionning
3)
The result of the coercive field of the magnetic circuit
4)
With a di/dt of 100 A/μs
5)
A list of corresponding tests is available
Features
Closed loop (compensated) multi-
range current transducer using the
Hall effect
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
=
5-6-8-12-25
A
980909/8
LE M C omponents
www.lem.com
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| LA25-NP/SP11 | 制造商:LEM 制造商全稱:LEM 功能描述:Current Transducer LA 25-NP/SP11 |
| LA25-NP/SP14 | 制造商:LEM 制造商全稱:LEM 功能描述:Current Transducer LA 25-NP/SP14 |
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