Current Transducer LB 500-S/SP1
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
Preliminary
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance
with ± 15 V
I
SN
K
N
V
C
I
C
V
d
@ ± 500 A
max
@ ± 750 A
max
500
0 .. ± 750
R
M min
R
M max
5
5
200
1 : 2500
± 15
20
+
I
S
6
1)
33
15
A
A
Ω
Ω
mA
V
mA
kV
Features
•
Closed loop (compensated) current
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0.
Special features
•
V
C
= ± 15 (± 5 %) V
•
K
N
= 1 : 2500
•
Low thermal offset drift with
temperature
•
Better zero crossing performance
•
T
A
= + 10°C .. + 50°C
•
Shield between primary and
secondary connected to
V
C
" - "
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
Accuracy - Dynamic performance data
X
ε
L
Accuracy @
I
PN,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
+ 10°C .. + 50°C
Response time
2)
@ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
Zero crossing distortion
± 0.5
< 0.1
Typ
%
%
Max
± 0.500 mA
± 0.064 mA
µs
A/µs
kHz
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.
I
O
I
OT
t
r
di/dt
f
<1
> 50
DC .. 150
negligeable
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
T
A
= 50°C
Mass
Standards
+ 10 .. + 50
- 25 .. + 85
30
670
EN 50178
°C
°C
Ω
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
HVDC transmisions.
Notes :
1)
2)
Between primary and secondary.
With a di/dt of 100 A/µs
•
990803/2
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