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Help CenterUL 1017 Clause 4.16.3.1 Figure25、Figure26 Accessibility Probe for Openings
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UL 1017 Clause 4.16.3.1 Figure25、Figure26 Accessibility Probe for Openings
Clause 4.16.3.1 The rotor of a motor, a pulley, a belt, a gear, a fan, or other moving part that could cause injury
to persons shall be enclosed or provided with other means to reduce the likelihood of unintentional
contact. An opening in an enclosure or guard shall comply with either (a) or (b).
a) For an opening that has a minor dimension less than 1.375 in (34.9 mm), such a moving
part shall not be contacted by the probe illustrated in Figure 2. See Clause 4.1.4.5 and Annex C.
b) For an opening that has a minor dimension of 1.375 in (34.9 mm) or more, such a moving
part shall not be contacted by the probe illustrated in Figures 25 and 26. See Clause 4.1.4.5
and Annex C.
Exception No. 1: A moving part or portion of a moving part that is necessarily exposed to perform the work
function need not be enclosed but, when necessary, guarding shall be provided.
Exception No. 2: An opening in the integral enclosure of a motor employed in an appliance intended for
commercial use, that is not used in either a hand-held appliance or a hand-supported portion of an
appliance, is acceptable if a moving part cannot be contacted by the probe illustrated in Figure 4.
A – Upper arm circumference – female – 5th percentile = 4.685 in (11.9 cm)
B – Shoulder to elbow length – male – 95th percentile = 6.61 in (16.8 cm)
C – Forearm circumference – female – 5th percentile = 4.76 in (12.1.cm)
D – Lower arm length – male – 95th percentile = 8.76 in (22.7 cm) (elbow to fingertip)
E – Minimum hand clearance diameter – female – 5th percentile = 1.374 in (3.49 cm)
F – Hand length – male – 95th percentile = 4.016 in (10.2 cm)
G1 – Middle finger length – male – 95th percentile = 1.772 in (4.5 cm)
G2 – Middle finger diameter – female – 5th percentile = 0.311 in (0.79 cm)
All dimensions apply to the 13 – 18 month age bracket (male and female).
Sherry Xu
Tel:+86-0755-18820263964
Email:sherryxu@jusdatest.com
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