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LF306-S Datasheet, PDF (1/3 Pages) LEM – Current Transducer | |||
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Current Transducer LF 306-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).
IPN = 300 A
Electrical data
16130
IPN
Primary nominal r.m.s. current
IP
Primary current, measuring range
RM Measuring resistance
with ± 12 V
with ± 15 V
@ ± 300 A max
@ ± 500 A
max
@ ± 300 A max
@ ± 500 A
max
I
Secondary nominal r.m.s. current
SN
K N Conversion ratio
V
Supply voltage (± 5 %)
C
IC
Current consumption
Accuracy - Dynamic performance data
300
A
0 .. ± 500
A
RM min
RM max
0
37
â¦
0
8
â¦
10
56
â¦
10
20
â¦
150
mA
1 : 2000
± 12 .. 15
V
20 (@ ±15V) + IS mA
X
ε
G
L
IO
IOM
I
OT
t
ra
tr
di/dt
f
Overall accuracy @ IPN , TA = 25°C
Linearity error
± 0.4
%
< 0.1
%
Offset current @ IP = 0, TA = 25°C
Residual current 1) @ IP = 0, after an overload of 3 x IPN
Thermal drift of I
O
- 25°C .. + 70°C
Reaction time @ 10 % of I
P max
Response time 2) @ 90 % of IPN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
Typ Max
± 0.20 mA
± 0.08 mA
± 0.20 ± 0.64 mA
< 500
<1
> 100
DC .. 100
ns
µs
A/µ s
kHz
General data
T
Ambient operating temperature
A
TS
Ambient storage temperature
R
Secondary coil resistance @ T = 70°C
S
A
m
Mass
Standards
- 25 .. + 70
°C
- 40 .. + 90
°C
34
â¦
60
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.
Application Domain
⢠Industrial.
Notes : 1) The result of the coercive field of the magnetic circuit
2) With a di/dt of 100 A/µs.
LEM
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
070424/9
Page 1/3
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