Datasheet
LEM reserves the right to carry out modications on its transducers, in order to improve them, without prior notice.
110210/11
www.lem.com
Page 3/3
Connection
Dimensions LF 305-S (in mm.)
Mechanical characteristics
General tolerance ± 0.5 mm ●
Transducer fastening ●
Vertical position 2 holes Ø 4.3 mm
2 M4 steel screws
Recommended fastening torque 3.2 Nm
or 4 holes Ø 1.9 mm,
depth: 7 mm
4 PTKA 25 screws
length: 6 mm
Recommended fastening torque 0.7 Nm
Transducer fastening ●
Horizontal position 4 holes Ø 4.3 mm
4 M4 steel screws
Recommended fastening torque 3.2 Nm
or 4 holes Ø 1.9 mm
crossing
4 PTKA 25 screws,
length: 10 mm
Recommended fastening torque 0.75 Nm
Primary through-hole Ø 20.1 mm ●
Connection of secondary Molex 6410 ●
3 Tin plated pins
Remarks
I ●
S
is positive when I
P
ows 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 lling the primary hole.
This is a standard model. For different versions (supply ●
voltage, turns ratios, unidirectional measurements ...),
please contact us.



