LEM LF205-P_06

IPN
Current Transducer LF 205-P
=
200 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).
16164
Electrical data
IPN
IP
RM
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
with ± 12 V
with ± 15 V
ISN
KN
VC
IC
Vd
200
0 .. ± 420
TA = 70°C
TA = 85°C
RM min RM max RM min RM max
@ ± 200 A max
@ ± 420 A max
@ ± 200 A max
@ ± 420 A max
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption @ ± 15V
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
0
0
0
0
71
14
100
28
0
0
23
23
69
12
98
26
100
1 : 2000
± 12 .. 15
17 + IS
3.5
A
A
• Closed loop (compensated) current
transducer using the Hall effect
Ω
Ω
Ω
Ω
mA
V
mA
kV
Accuracy - Dynamic performance data
XG
ε
Overall accuracy @ IPN , TA = 25°C
Linearity
L
± 0.5
< 0.1
IO
IOM
IO T
Typ
Offset current @ IP = 0, TA = 25°C
Residual current 1) @ IP = 0, after an overload of 3 x IPN
Thermal drift of IO
- 40°C .. + 85°C
± 0.12
tra
tr
di/dt
f
Reaction time @ 10 % of IP max
Response time2) @ 90 % of IP max
di/dt accurately followed
Frequency bandwidth (- 3 dB)
%
%
Max
± 0.2
± 0.1
± 0.4
< 500
<1
> 100
DC .. 100
mA
mA
mA
ns
µs
A/µs
kHz
m
Notes :
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @ TA = 70°C
@ TA = 85°C
Mass
Standards
1)
2)
• 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.
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
General data
TA
TS
RS
Features
(SMPS)
- 40 .. + 85
°C
- 40 .. + 90
°C
33
Ω
35
Ω
58
g
EN 50178 : 1997
• Power supplies for welding
applications.
The result of the coercive field of the magnetic circuit
With a di/dt of 100 A/µs.
060718/3
LEM Components
w w w .lem.com
Dimensions LF 205-P
(in mm. 1 mm = 0.0394 inch)
Bottom view
Secondary terminals
Terminal + : supply voltage + 12 .. 15 V
Terminal M : measure
Terminal - : supply voltage - 12 .. 15 V
Front view
Left view
Back view
Connection
Top view
Mechanical characteristics
• General tolerance
• Fastening & secondary connection
Recommanded PCB hole
• Primary through-hole
• Supplementary fastening
Recommended PCB hole
Recommended screws
LEM code
Remarks
± 0.2 mm
3 pins 0.63x0.56 mm
∅ 0.9 mm
∅ 15.5 mm
2 holes ∅ 1.75 mm
2.4 mm
KA22 x 6
47.30.60.006.0
• IS is positive when IP flows in the direction of the arrow.
• Temperature of the primary conductor should not exceed
100°C.
• Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole.
• This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.