北约标准协定4569 防护等级

Protection Levels

Definition of Protection: Based on ballistic material providing a 90% probability of protection from the threat (established by STANAG 4164). Threat Level 1 (Rifle)

Artillery Simulator: 20mm FSP (simulating 155mm threat) at 520 m/sec from a distance of 100 meters. Due to very low probability of a large fragment retaining enough velocity at these distances, STANAG 4569 makes this optional.

Ammunition: 5.56mm x 45 M193 Ball

Distance: 30 meters

Projectile Weight: 3.56 grams

Velocity: 937 m/sec

Energy: 1,563 Joules

Ammunition: 5.56mm x 45 SS109 (M855) (DM11) (NATO)

Distance: 30 meters

Projectile Weight: 4 grams

Velocity: 900 m/sec

Energy: 1,620 Joules

Ammunition: 7.62mm x 51 M80 Ball (NATO)

Distance: 30 meters

Projectile Weight: 9.5 grams

Velocity: 833 m/sec

Energy: 3,296 Joules

Threat Level 2 (Infantry Rifle)

Artillery Simulator: 20mm FSP (simulating 155mm threat) at 630 m/sec from a distance of 80 meters. Due to very low probability of a large fragment retaining enough velocity at these distances, STANAG 4569 makes this optional.

Ammunition: 7.62mm x 39 API BZ

Distance: 30 meters

Projectile Weight: 7.77 grams

Velocity: 695 m/sec

Energy: 1,877 Joules

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