UL507-Figure 8.1 Probe For Impellers Of Portable Appliances ，Hazardous Moving Parts Probe

UL507-figure 8.1 Probe for impellers of portable appliances ,Hazardous Moving Parts Probe

Parameter:

1,Total Length:88.9mm(3.5inch)

2,Head Length:25.4mm(1inch)
3,Head Radius:R3.175mm(1/8inch)
4,Former Head Diameter:12.7mm(1/2inch)
5,Tail Diameter:25.4mm(1inch)
 

UL 507 Electric Fans

8.2.5 Conventional designs of impellers meet the requirement of being guarded when:

a) The relationship between mass (W) in kg, radius (r) in mm, and speed (N) in revolutions per minute is such that K in the following equation is less than 29264:
K = 6 × 10 −7 (Wr 2 N 2 )
b) The guarding is such that the probe illustrated in Figure 8.1 cannot touch the leading edge of the blade and hub when inserted as described in 8.2.6. For a reversible fan, both edges of the blade are considered leading edges. When K is greater than 29264, the probe shall not touch any part of the impeller.

8.2.6 The portion of an impeller that entails a risk of injury to persons shall be guarded so that the probe illustrated in Figure 8.1 does not touch the part when inserted with a force of 4.45 N (1 pound) for a maximum of 5 seconds through any opening in the guard

Packaging and Shipping

1. Aluminium box and carton box, careful and tight package, make sure the package is intact