Third Party Verification Claim

Page 57 of 129 Report No.: JAT2209271146SR-1
UL 859
Clause
Requirement + Test
Result - Remark
Verdict
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44.1.5
At a point on the surface of a coil where the
temperature is affected by an external source of
heat, the temperature rise measured by means of
a thermocouple may be higher than the maximum
indicated in Table 44.1 by the following amount:
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44.1.6
With respect to 44.1.5, if the coil wrap is not
caused to exceed its temperature limitation by
radiation from an external source, the temperature
of the coil may be measured by means of
athermocouple on the integral insulation of the coil
conductors
P
44.1.7
All values for temperature rises in Tables
44.1 and 44.2 are based on an assumed ambient
temperature of 25°C (77°F); however, tests may
be conducted at an ambient temperature within the
range of 20 – 30°C (68 – 86°F)
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44.1.8
If the retention of the insulation of a heater cord
depends upon a fabric braid, the braid shall not be
removed nor subjected to a temperature rise of
more than 65°C (117°F) unless other means are
provided to hold the insulation in place. The jacket
of Type HSJ or HSJO cord shall not be subjected
to a temperature rise of more than 35°C (63°F) if
the protection afforded by the jacket is required
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44.1.9
Certain special treatments, such as the use of an
impregnant, have been determined to be
acceptable for retaining the insulation around the
conductors of a heater cord at elevated
temperatures
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44.1.10
Thermocouples used to measure temperatures
obtained by the thermocouple method are to
consist of wires not larger than 24 AWG (0.221
mm2). The temperature is considered to be
stabilized when three successive readings, taken
at intervals of 10 percent of the previously elapsed
duration of the test but not less than 5 minutes
indicate no change
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44.1.11
When thermocouples are used in the
determination of temperatures in connection with
heating of electrical equipment, it is common
practice to use thermocouples consisting of 30
AWG (0.05 mm2) iron and constantan wires and a
temperature-indicating instrument.
Thermocouples consisting of 30 AWG iron and
constantan wires and a potentiometer-type
temperature-indicating instrument are to be used
whenever referee temperature measurements by
thermocouples are required.
P