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The Lighting Handbook
Ball-proofness
Luminaires for sports halls must ball-proof according to
DIN VDE 0710-13.
.
When choosing the luminaires, the rod guard’s grid width
must matched the sport played the hall: must
always considerably smaller than the balls used, never of
the same size, balls may get stuck the guard. test conforming with
the relevant standard, the luminaire has withstand hits
from three directions maximum impact speed of
60 km/h, the ball used having the size handball.
Balls hitting luminaires must not damage them to
cause luminaire parts fall down
