Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 33 of 75
24.1
A barrier or integral part, such as an insulating washer or
bushing, and a base or a support for mounting live parts, shall
be moisture-resistant material that is not adversely affected by
the temperature and stresses to which it is subjected under
conditions of use.
Insulating material UL
approved
P
24.2
Insulating material is to be judged with respect to its
acceptability for the application. Materials such as mica, some
molded compounds, and certain refractory materials are usually
acceptable for the sole support of live parts. If an investigation
is necessary to determine whether a material is acceptable,
consideration is to be given to:
P
a) Its mechanical strength, resistance to ignition, dielectric
strength, insulation resistance, and heat-resistant qualities, in
both the aged and unaged conditions;
P
b) The degree to which it is enclosed; and
P
c) Any other feature affecting the risk of fire, electric shock, or
injury to persons.
P
All factors are to be considered with respect to conditions of
actual service.
P
24.3
Ordinary vulcanized fiber may be used for insulating bushings,
washers, separators, and barriers, but not as sole support for
uninsulated live parts.
N/A
25
Motors
No motor
N/A
25.1
A motor shall be protected from overheating due to overload
and locked-rotor conditions.
N/A
Exception: A motor that is used for air-handling only - direct
drive blower or ventilating fan - is to be protected against
locked-rotor conditions but need not be protected against
overload conditions.
N/A
25.2
The overload protection required by 25.1 may be accomplished
by one of the following:
N/A
a) Thermal protection complying with the applicable
requirements in the Standard for Overheating Protection for
Motors, UL 2111 or the Standard for Thermally Protected
Motors, UL 1004-3;
N/A
b) Impedance protection complying with the requirements in
the Standard for Impedance Protected Motors, UL 1004-2; or
N/A
c) Protection equivalent to that specified in (a).
N/A
25.2
reivsed May 14, 2014. UL 1004-3 will replace Part III of UL
2111 effective September 15, 2014.
N/A
25.3
A shaded-pole motor having a difference of 1 ampere or less
between no-load and locked rotor currents and having a 2 to 1
or smaller ratio between locked-rotor and no-load currents is
considered to have acceptable overload protection if it is
protected against locked-rotor conditions only.
N/A
26
Transformers
P
26.1
General
P
26.1.1
A transformer coil, unless inherently moisture resistant, shall be
treated with an insulating varnish and baked, or otherwise
impregnated to exclude moisture or acid vapor. Film-coated
magnet wire is identified as moisture resistant.
Film-coated
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