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Current Transducer LF 505-S
I PN
=
500 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).
16137
Electrical data
I PN
I PM
R M
Primary nominal current rms
Primary current, measuring range
Measuring resistance
500
0 .. ± 800
R M mini R M maxi
A
A
Features
? Closed loop (compensated) current
@ ± 500 A maxi
@ ± 500 A maxi
@ ± 500 A maxi
I SN
K N
V C
I C
with ± 15 V
@ ± 800 A maxi
with ± 18 V
@ ± 800 A maxi
with ± 24 V
@ ± 800 A maxi
Secondary nominal current rms
Conversion ratio
Supply voltage (± 5 %)
Current consumption (± 1 mA)
Accuracy - Dynamic performance data
0 60 ?
0 11 ?
0 92 ?
0 30 ?
5 149 ?
5 65 ?
100 mA
1 : 5000
± 15 .. 24 V
24 (@ ± 18 V) + I S mA
transducer using the Hall effect
? Isolated 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
ε
X
L
Accuracy @ I PN , T A = 25°C
Linearity error
± 0.6
< 0.1
Typ
Maxi
%
%
interference
? Current overload capability.
Applications
Temperature variation of I O
Response time
to 90 % of I PN step
I O
I OM
I OT
t r
di/dt
Offset current @ I P = 0, T A = 25°C
Magnetic offset current @ I P = 0 and specified R M ,
after an overload of 3 x I PN
- 40°C .. + 70°C
1)
di/dt accurately followed
± 0.1
<1
> 100
± 0.4
± 0.2
± 0.4
mA
mA
mA
μs
A/μ s
? 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
BW
Frequency bandwidth (- 1 dB)
DC .. 100
kHz
(SMPS)
? Power supplies for welding
General data
applications.
T A
Ambient operating temperature
- 40 .. + 70
°C
Applications domain
T S
R S
m
Ambient storage temperature
Secondary coil resistance
Mass
@ T A = 70°C
- 40 .. + 85
70
230
°C
?
g
? Traction
? Industrial.
Standards
EN 50155: 1995
EN 50178: 1997
Note :
1)
With a di/dt of 100 A/μs.
page 1/3
071003/10
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
w w w .lem.com
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