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參數(shù)資料
| 型號： | LA55P |
| 廠商： | LEM |
| 英文描述： | Current Transducer LA 55-P |
| 中文描述： | 電流傳感器洛杉磯55磷 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 68K |
| 代理商： | LA55P |
Current Transducer LA 55-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 @
50
0 .. ± 70
A
A
T
A
= 70°C
R
M min
R
M max
R
M min
R
M max
10
100
10
50
50
160
50
90 135
2)
135
2)
T
A
= 85°C
with ± 12 V
@ ± 50 A
max
@ ± 70 A
max
@ ± 50 A
max
@ ± 70 A
max
60
95
60
1)
60
1)
135 155
with ± 15 V
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
50
1 : 1000
± 12 .. 15
10
(@ ± 15 V) +
I
S
mA
2.5
mA
V
kV
Accuracy - Dynamic performance data
X
Accuracy @
I
PN
,
T
A
= 25°C
@ ± 15 V (± 5 %)
@ ± 12 .. 15 V (± 5 %)
± 0.65
± 0.90
< 0.15
%
%
%
e
L
Linearity
Typ
Max
± 0.2
± 0.3
± 0.5
± 0.6
I
O
I
OM
I
OT
Offset current @
I
P
= 0,
T
= 25°C
Residual current
3)
@
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
± 0.1
± 0.1
t
ra
t
di/dt
f
Reaction time @ 10 % of
I
P max
Response time
@ 90 % of
P max
di/dt
accurately followed
Frequency bandwidth (- 1 dB)
< 500
< 1
> 200
DC .. 200
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
80
85
18
EN 50178
°C
°C
T
A
= 70°C
T
A
= 85°C
m
Mass
Standards
4)
g
Notes :
1)
Measuring range limited to ± 60 A
max
2)
Measuring range limited to ± 55 A
3)
Result of the coercive field of the magnetic circuit
4)
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
=
50 A
980706/8
LE M C omponents
www.lem.com
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