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LF205-P_06 Datasheet, PDF (1/2 Pages) LEM – Current Transducer | |||
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Current Transducer LF 205-P
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).
IPN = 200 A
Electrical data
16164
I
Primary nominal r.m.s. current
PN
IP
Primary current, measuring range
R
Measuring resistance @
M
200
A
0 .. ± 420
A
T = 70°C T = 85°C
A
A
R R R R M min M max M min M max
with ± 12 V
with ± 15 V
@ ± 200 A max
@ ± 420 A max
@ ± 200 A max
@ ± 420 A
max
0 71 0 69 â¦
0 14 0 12 â¦
0 100 23 98 â¦
0 28 23 26 â¦
ISN
Secondary nominal r.m.s. current
K N Conversion ratio
VC Supply voltage (± 5 %)
IC
Current consumption @ ± 15V
Vd
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
100
mA
1 : 2000
± 12 .. 15
V
17 + IS
mA
3.5
kV
Accuracy - Dynamic performance data
X
εG
L
I
O
IOM
I
OT
t
ra
t
r
di/dt
f
Overall accuracy @ I , T = 25°C
PN A
Linearity
± 0.5
%
< 0.1
%
Typ Max
Offset current @ I = 0, T = 25°C
P
A
± 0.2 mA
Residual current 1) @ IP = 0, after an overload of 3 x IPN
± 0.1 mA
Thermal drift of I
O
- 40°C .. + 85°C ± 0.12 ± 0.4 mA
Reaction time @ 10 % of I
P max
Response time2) @ 90 % of I
P max
di/dt accurately followed
< 500
<1
> 100
ns
µs
A/µ s
Frequency bandwidth (- 3 dB)
DC .. 100
kHz
General data
TA
Ambient operating temperature
T
Ambient storage temperature
S
R S Secondary coil resistance @ TA = 70°C
@ T = 85°C
A
m
Mass
Standards
- 40 .. + 85
°C
- 40 .. + 90
°C
33
â¦
35
â¦
58
g
EN 50178 : 1997
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.
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.
Notes : 1) The result of the coercive field of the magnetic circuit
2) With a di/dt of 100 A/µs.
LEM Components
060718/3
www.lem.com
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