FHS-40-P-SP600 Datasheet, PDF (13/18 Pages) LEM – Current transducer FHS 40-P/SP600

FHS 40-P/SP600
0 - 100A
Application information
Multi-turns
For low currents (under 10 A), it is advisable to make several turns with the primary track to increase the magnetic field
generated by the primary current.
As with a single track, it is better to have wider tracks around the Minisens than under it (to reduce temperature rise)
Figure 12: Example of multi-turns PCB design
Two optimized design examples are presented below.
4 turns bottom side
High isolation configuration
3 turns bottom side
Low isolation configuration
KIT 8
Creeapage, clearance 8 mm
Nominal primary current I_PN 5 A
(85°C ambient, natural convection,
30°C track temperature rise)
Measuring range I_PM 15 A
Sensitivity G 126 mV/A
Track width under IC 0.78 mm
Track width elsewhere 3 mm
A demo board of this
GE.00.23.107.0
design is available
PCB characteristics 1.6 mm / 70 µm Cu
KIT 7
Creeapage, clearance 0.4 mm
Nominal primary current I_PN 5 A
(85°C ambient, natural convection,
30°C track temperature rise)
Measuring range I_PM 10 A
Sensitivity G 186 mV/A
Track width under IC 0.78 mm
Track width elsewhere 3 mm
A demo board of this
GE.00.23.106.0
design is available
PCB characteristics 1.6 mm / 70 µm Cu
100727/10
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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