Current Transducer LB 200-S/SP4
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
I
PN
Primary nominal r.m.s. current
200
A
I
P
Primary current, measuring range
0 .. 300
A
R
M
Measuring resistance
R
M min
R
M max
with 15 V
@ 200 A
max
5 33
@ 300 A
max
5 15
I
SN
Secondary nominal r.m.s. current
200
mA
K
N
Conversion ratio
1 : 1000
V
C
Supply voltage ( 5 %)
15
V
I
C
Current consumption
20 + I
S
mA
V
d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
6
1)
kV
1
2)
kV
Accuracy - Dynamic performance data
X
G
Overall accuracy @ I
PN,
T
A
= 25C
0.5
%
L
Linearity
< 0.1
%
Typ
Max
I
O
Offset current @ I
P
= 0, T
A
= 25C
0.50 mA
I
OT
Thermal drift of I
O
+ 20C .. + 50C
0.08 mA
t
r
Response time
3)
@ 90 % of I
PN
< 1
s
di/dt
di/dt accurately followed
> 50
A/s
f
Frequency bandwidth (- 1 dB)
DC .. 150
kHz
Output noise
< 0.002
mA
Magnetization after excursion @ I
PN
< 0.01
mA
Crossing distortion
negligeable
Matching specification
+ 20C .. + 50C
0.01
mA
General data
T
A
Ambient operating temperature
+ 20 .. + 50
C
T
S
Ambient storage temperature
- 25 .. + 85
C
R
S
Secondary coil resistance @ T
A
= 50C
30
m
Mass
200
g
Standards
4)
EN 50178
Notes :
1)
Between primary and secondary + shield.
2)
Between secondary and shield.
3)
With a di/dt of 100 A/s
4)
A list of corresponding tests is available.
Features
Closed loop (compensated) current
transducer using the Hall effect
Insulated plastic case recognized
according to UL 94-V0.
Special features
V
C
= 15 V ( 5 %)
K
N
= 1 : 1000
Shield
Negligeable zero crossing distortion
Low noise electronics
T
A
= + 20C .. + 50C
Low I
OT
Transducers matched based on
thermal drift to within T
A
0.01 mA.
Advantages
Better frequency response
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.
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
PN
= 200
A
990716/7
LEM Components
www.lem.com
Secondary terminals
Terminal + : supply voltage + 15 V
Terminal M : measure
Terminal - : supply voltage - 15 V
Terminal E : shield
Connection
Remarks
I
S
is positive when I
P
flows in the direction of the arrow.
Temperature of the primary conductor should not exceed
70C.
Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole.
Mechanical characteristics
General tolerance
0.2 mm
Fastening
2 holes
5.5 mm
Primary through-hole
20 mm
Connection of secondary
Faston 6.3 x 0.8 mm
Dimensions LB 200-S/SP4
(in mm. 1 mm = 0.0394 inch)
Front view
Top view
Left view
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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