LA55-TP [LEM]
Current Transducer LA 55-TP; 电流传感器LA 55 -TP
| 型号： | LA55-TP |
| 厂家： | 
LEM |
| 描述： | Current Transducer LA 55-TP |
| 文件： | 总2页 (文件大小：69K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Current Transducer LA 55-TP
IPN = 50 A
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
IPN
IP
RM
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
50
0 .. ± 70
TA = 70°C
RM min RMmax RM min RMmax
A
A
Features
TA = 85°C
· Closed loop (compensated) current
transducer using the Hall effect
· Printed circuit board mounting
· Insulated plastic case recognized
according to UL 94-V0.
with ± 12 V
with ± 15 V
@ ± 50 A max
10 100 60 95
W
W
W
W
@ ± 70 A max
@ ± 50 A max
@ ± 70 A max
10
50
60 1) 60 1)
50 160 135 155
50
90 135 2)135 2)
Advantages
ISN
KN
VC
IC
Vd
Vb
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
50
1 : 1000
± 12 .. 15
10(@ ±15V)+IS mA
2
mA
· Excellent accuracy
· Very good linearity
V
· Low temperature drift
· Optimized response time
· Wide frequency bandwidth
· No insertion losses
· High immunity to external
interference
kV
V
60
Accuracy - Dynamic performance data
X
Accuracy @ IPN , TA = 25°C
@ ± 15 V (± 5 %)
± 0.65
± 0.90
< 0.15
%
%
%
@ ± 12 .. 15 V (± 5 %)
· Current overload capability.
e
Linearity
L
Typ
Max
Applications
IO
IOM
IOT
Offset current @ IP = 0, TA = 25°C
Residual current3) @ IP = 0, after an overload of 3 x IPN
Thermal drift of IO
± 0.2 mA
± 0.3 mA
· 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.
0°C .. + 70°C
- 25°C .. + 85°C
± 0.1 ± 0.5 mA
± 0.1 ± 0.6 mA
tra
tr
Reaction time @ 10 % of IP max
Response time 4) @ 90 % of IP max
< 500
< 1
> 200
DC .. 200
ns
µs
A/µs
kHz
di/dt di/dt accurately followed
f
Frequency bandwidth (- 1 dB)
General data
TA
TS
RS
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
- 25 .. + 85
- 40 .. + 90
80
85
24
°C
°C
W
W
g
TA = 70°C
TA = 85°C
m
Mass
Standards
5)
EN 50178
1)
Notes : Measuring range limited to ± 60 A
max
max
2)
Measuring range limited to ± 55 A
Result of the coercive field of the magnetic circuit
With a di/dt of 100 A/µs
3)
4)
5)
980706/4
A list of corresponding tests is available
LEM Components
www.lem.com
Dimensions LA 55-TP (in mm. 1 mm = 0.0394 inch)
Bottom view
Left view
Secondary terminals
Terminal + : supply voltage + 12 .. 15 V
Terminal : supply voltage - 12 .. 15 V
-
Terminal M : measure
Connection
Standard 00
or N° SP..
Year Week
Front view
Mechanical characteristics
Remarks
· General tolerance
· Fastening & connection of primary
± 0.2 mm
bus bar
6.4 x 1.6 mm
3.8 mm
3 pins
0.63 x 0.56 mm
0.9 mm
· IS is positive when IP flows in the direction of the arrow.
· Temperature of the primary conductor should not exceed
90°C.
· This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
Recommended PCB hole
· Fastening & connection of secondary
Recommended PCB hole
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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