It is one major requirement an impact protector needs to surpass: Impact test.
EN1621-1 assesses armor designed to protect the shoulder, elbow and forearm, hip, tail-bone, knee and lower leg regions. The test apparatus consists of a mass of 5 kg with a 40 mm x 30 mm striking face, dropped onto the sample mounted on top of a 50 mm radius hemispherical dome. The anvil is further mounted onto a load cell, allowing a measurement to be made of the force transmitted through the protector. The kinetic energy of the falling mass at impact must not exceed 50 J.
A protector subjected to this test method is deemed to conform to this standard if the average transmitted force of nine tests is less than 35 kN, with no single test result exceeding 50 kN.
It is one major requirement an impact protector needs to surpass: Impact test.
EN1621-2 assesses armor designed to protect the back/spine. It is a more stringent standard allowing no more than 18 kN of force to be transmitted to attain Level 1 protection (EN-1621-2 CE Level 1). Armor that allows less than 9 kN of force to be transmitted can attain a Level 2 protection (EN-1621-2 CE Level 2). See section below for more information.