LF505-S Datasheet, PDF (1/2 Pages) LEM – Current Transducer LF 505-S

Current Transducer LF 505-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).
Preliminary
I_PN = 500 A
Electrical data
I_PN
Primary nominal r.m.s. current
I_P
Primary current, measuring range
R_M Measuring resistance
with ± 15 V
with ± 18 V
with ± 24 V
@ ± 500 A _max
@ ± 800 A _max
@ ± 500 A _max
@ ± 800 A _max
@ ± 500 A _max
@ ± 800 A _max
I_SN
Secondary nominal r.m.s. current
K _N Conversion ratio
V_C
Supply voltage (± 5 %)
I_C
Current consumption
V_d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
Accuracy - Dynamic performance data
εX G
L
Overall accuracy @ I_PN , T_A = 25°C
Linearity
I_O
I_OT
t_r
di/dt
f
Offset current @ I_P = 0, T_A = 25°C
Thermal drift of I_O
- 10°C .. + 70°C
Response time ¹⁾ @ 90 % of I_PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
General data
T_A
Ambient operating temperature
T_S
Ambient storage temperature
R _S Secondary coil resistance @
m
Mass
Standards ²⁾
T_A = 70°C
500
A
0 .. ± 800
A
R_{M min}
0
0
0
0
5
5
R_{M max}
60
Ω
11
Ω
92
Ω
30
Ω
149 Ω
65
Ω
100
mA
1 : 5000
± 15 .. 24
V
24 (@ ± 18 V)+ I_S mA
3
kV
± 0.6
%
< 0.1
%
Typ Max
± 0.4 mA
± 0.3 ± 0.5 mA
<1
> 100
DC .. 100
µs
A/µ s
kHz
- 10 .. + 70
°C
- 25 .. + 85
°C
70
Ω
230
g
EN 50155
EN 50178
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⁾ With a di/dt of 100 A/µs
2) _{A list of corresponding tests is available}
010327/4
LEM Components
w w w .lem.com