Current Transducer LF 505-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
=
500 A
16137
Electrical data
I
PN
I
P
R
M
Primary nominal rms current
Primary current, measuring range
Measuring resistance
with ± 15 V
with ± 18 V
with ± 24 V
I
SN
K
N
V
C
I
C
@ ± 500 A
max
@ ± 800 A
max
@ ± 500 A
max
@ ± 800 A
max
@ ± 500 A
max
@ ± 800 A
max
500
0 .. ± 800
R
M min
R
M max
0
0
0
0
5
5
60
11
92
30
149
65
A
A
Ω
Ω
Ω
Ω
Ω
Ω
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 rms current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
100
mA
1 : 5000
± 15 .. 24
V
24
(@ ± 18 V) +
I
S
mA
Accuracy - Dynamic performance data
X
G
ε
L
Overall accuracy @
I
PN
,
T
A
= 25°C
Linearity error
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
- 40°C .. + 70°C
Response time @ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
1)
± 0.6
< 0.1
Typ
Max
± 0.4
± 0.4
%
%
mA
mA
µs
A/µs
kHz
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
OT
t
r
di/dt
f
± 0.1
<1
> 100
DC .. 100
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
Mass
Standards
- 40 .. + 70
°C
- 40 .. + 85
°C
70
Ω
230
g
EN 50155 : 1995
EN 50178 : 1997
T
A
= 70°C
Applications domain
•
Traction
•
Industrial.
Note :
1)
With a di/dt of 100 A/µs.
page 1/3
060922/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
LEM [ LEM ]
