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LA255-S 参数 Datasheet PDF下载

LA255-S图片预览
型号: LA255-S
PDF下载: 下载PDF文件 查看货源
内容描述: 电流传感器LA 255 -S [Current Transducer LA 255-S]
分类和应用: 传感器
文件页数/大小: 2 页 / 70 K
品牌: LEM [ LEM ]
 浏览型号LA255-S的Datasheet PDF文件第2页  
Current Transducer LA 255-S
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).
I
PN
=
250 A
Electrical data
I
PN
I
P
Î
P max
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring overload
1)
Measuring resistance @
with ± 12 V
with ± 15 V
with ± 18 V
I
SN
K
N
V
C
I
C
V
b
@ ± 250 A
max
@ ± 500 A
max
@ ± 250 A
max
@ ± 500 A
max
@ ± 250 A
max
@ ± 500 A
max
250
0 .. ± 500
600
T
A
= 70°C
T
A
= 85°C
R
M min
R
M max
R
M min
R
M max
0
0
5
5
25
25
49
7
70
17
93
29
0
0
5
5
25
25
47
5
68
15
91
27
A
A
A
Features
Closed loop (compensated) 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.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s. rated voltage
2)
, safe separation
basic isolation
125
mA
1 : 2000
± 12 .. 18
V
20
(@ ± 15 V) +
I
S
mA
1625
V
3250
V
Accuracy - Dynamic performance data
X
G
ε
L
Overall accuracy @
I
PN
,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Residual current
3)
@
I
P
= 0, after an overload of 3 x
I
PN
Thermal drift of
I
O
- 10°C .. + 85°C
Reaction time @ 10 % of
I
P max
Response time
4)
@ 90 % of
I
P max
di/dt accurately followed
Frequency bandwidth (- 3 dB)
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
Mass
Standards
1)
2)
± 0.8
< 0.1
Max
± 0.15
± 0.50
± 0.15 ± 0.30
< 500
<1
> 100
DC .. 100
- 10 .. + 85
- 40 .. + 90
35
37
110
EN 50178
Typ
%
%
mA
mA
mA
ns
µs
A/µs
kHz
°C
°C
g
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
O
I
OM
I
OT
t
ra
t
r
di/dt
f
T
A
T
S
R
S
m
Notes :
General data
T
A
= 70°C
T
A
= 85°C
5)
3)
4)
5)
3 mn/hour @
V
C
= ± 15 V,
R
M
= 5
Pollution class 2. With a non insulated primary bar which fills the
through-hole
The result of the coercive field of the magnetic circuit
With a di/dt of 100 A/µs
A list of corresponding tests is available
980707/3
LEM Components
w w w .lem.com