EN
ZHEN 813:2008
Sit harnesses
Dynamic Performance
Sit harnesses are subjected to a drop test to generate a shock load on the product. A lesser force is applied to the sit harness attachment point compared with fall arrest harness attachments as the possibility of a period of free-fall is significantly less in use. Sit harnesses are subjected to a 2 metre drop using the maximum rated load dummy and they are required to safely arrest the fall following the drop.
Static Strength
Sit harnesses are subjected to a force of 10 times the maximum rated load but at least a minimum of 15kN for 3 minutes. The harness is required to hold the load without failure of any component part.
Corrosion Resistance
Metallic components used in fall protection equipment are subjected to a neutral salt-spray test intended to prove a minimum resistance to environmental corrosion (specifically rust). Products are held within a sealed chamber, which is filled with a salt-water mist, which can induce rust in unprotected metals. Products are subjected to 48 hours exposure and examined for rusting and function afterward.