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First of all,
we need to make a difference between sharp edge and angle:
- sharp edge is the one that can cause the cutting of the connection.
- the angle of the edge is more related to fall factor: up to 90° the use is inclined/horizontal , when you get over 90° it means that the anchor will be below the feet of the user so the fall factor is less than 1, and some devices cannot withstand such fall factor. There are no standards about the angle of edge: in this case you have to refer to the instruction manual of the manufacturer.
EN standards and test methods
The EN standards do not prescribe test methods for sharp edges. So the group of coordination of notified bodies for fall arrest (VG11) found a way to test the horizontal/inclined use over sharp edge.
EN 360 - Fall arrester
CNB/P/11.060: test method for sharp edges with edge radius more then 0.5mm.
CNB/P/11.054: test method for very sharp edge with edge radius less than 0,5mm.
EN 355 - Lanyard with shock absorber
CNB/P/11.074: test method for sharp edges with radius more then 0.5mm.
EN 353-2 - Guided type fall arrester
CNB/P/11.075: test method for sharp edges with radius more then 0.5mm.