Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 45 of 75
35.3.1
An insulating liner or barrier of material such as vulcanized fiber
or thermoplastic used in lieu of required spacings specified in
Exception No. 1 to 35.1.1 shall not be less than 0.028 inch
(0.71 mm) thick. The material shall not be used as the sole
support of uninsulated live parts involving a risk of fire, electric
shock, or electrical-energy/high current. Other insulating
materials used as a barrier or as either direct or indirect support
of uninsulated live parts involving a risk of fire, electric shock, or
electrical-energy/high current shall comply with the
requirements in the Standard for Polymeric Materials - Use in
Electrical Equipment Evaluations, UL 746C.
N/A
Exception No. 1: Vulcanized fiber not less than 0.013 inch (0.33
mm) thick is capable of being used:
N/A
a) In conjunction with an air spacing of not less than50
percent of the minimum required through air spacing; and
N/A
b) Between a heat sink and a metal mounting surface,
including the enclosure, of an isolated secondary circuit rated50
volts rms or less.
N/A
Exception No. 2: A generic material as noted in 35.3.5 and
Table 35.3 is capable of being used as an insulating liner when
the material:
N/A
a) Does not serve as sole support of live parts; and
N/A
b) Is not subject to inadvertent mechanical stresses by a user
or a field installer.
N/A
Exception No. 3: An insulating material having a thickness less
than that specified is capable of being used when, upon
investigation, it is found to be capable of being used for the
application and has a dielectric breakdown strength of not less
than 5000 volts or 2500 volts in the thickness used for
equivalency to 0.028 inch or 0.013 inch thick vulcanized fiber,
respectively, as determined by the equivalent insulation test
described in Tests of Insulating Material, Section 44.
N/A
35.3.2
Other than as indicated in 35.3.3, insulating tubing complying
with the requirements in the Standard for Extruded Insulating
Tubing, UL 224, may be used as insulation of:
N/A
a) A conductor including bus bars in lieu of the minimum
required spacings; and
N/A
b) A capacitor case in lieu of bonding the case for grounding,
providing that the following conditions are met:
N/A
1) The conductor is not subjected to compression, repeated
flexure, or sharp bends;
N/A
2) The conductor or case covered with the tubing is well
rounded and free from sharp edges;
N/A
3) The tubing is used in accordance with the manufacturer's
instructions; and
N/A
4) The conductor or case is not subjected to a temperature or
voltage higher than that for which the tubing is rated.
N/A
35.3.3
Insulating tubing complying with the Standard for Extruded
Insulating Tubing, UL 224, shall not be used as insulation over
parts subject to maintenance, such as bolts that are periodically
tightened.
N/A
35.3.4
A wrap of thermoplastic tape, complying with the requirements
in the Standard for Polyvinyl Chloride, Polyethylene, and
Rubber Insulating Tape, UL 510, may be used when all of the
following conditions are met:
N/A