Energy Guide

Page 81 of 104 Report No.: HK2107050725-SR

UL 507

Clause Requirement + Test Result - Remark Verdict

TRF No. UL507A

64.4 The cheesecloth referenced in the Exception to

64.2 is to be bleached, 914.40 mm (36 inches)

wide, 28.22 – 30.24 meters per kilogram (14 – 15

yards per pound), and having what is known to the

trade as a count of 32 × 28 – that is, along the two

directions parallel to the threads, there are 13

threads per centimeter in one direction and 11

threads per centimeter in the other (32 threads per

inch in one direction and 28 threads in the other).

N/A

65 Component Breakdown Test P

65.1 As required by 34.1, a fan shall be subjected to the

Component Breakdown Test as specified in 65.2–

65.12.

65.2 With reference to 65.1, a risk of fire or electric

shock is determined to exist when any of the

following occur:

a)Glowing, charring, or flaming of the cheesecloth

or tissue paper as specified in 65.6;

b)Opening of the 3 Amp fuse specified in 65.7;

65.3 The circuit between any two terminals of a device

is to be opened or shorted. Only one of the simulat

fault conditicns is to be imposed at a time

65.4 Each test is to be conducted on a separate sample

unless it is agreeable to those concerned that more

than one test be conducted on the same sample.

65.5 A part of the fan that is removed during routine

operation or maintenance is to be omitted when it

results in a more severe test, and the part is not:

a)Required for the functioning of the equipment;

and

b)Exposed to view during intended operation.

65.6 During these tests, the sample is to be placed on a

softwood surface covered with white tissue paper,

and a single layer of cheesecloth is to be draped

loosely over the entire enclosure.

65.7 During each test, exposed dead-metal parts of the

sample are to be connected to earth ground

through a 3 Amp nontime-delay fuse.