Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 42 of 75
Exception No. 2: The spacing requirements of 35.1.1 shall not
apply to the area between adjacent foils on printed-wiring
boards provided with a conformal coating complying with the
requirements in the Standard for Polymeric Materials - Use in
Electrical Equipment Evaluations, UL 746C.
N/A
Exception No. 3: On printed-wiring boards having a flammability
classification of V-0 in accordance with the Standard for Tests
for Flammability of Plastic Materials for Parts in Devices and
Appliances, UL 94, spacings (other than spacings to dead
metal traces, between primary and secondary circuits, and at
field wiring terminals) are not specified between traces of
different potential connected in the same circuit when:
N/A
a) The spacings are adequate to comply with the
requirements in 54.11, Evaluation of reduced spacings on
printed-wiring boards; or
N/A
b) An analysis of the circuit indicates that no more than12.5
mA of current is available between short-circuited traces having
reduced spacings.
N/A
Exception No. 4: For multilayer-printed wiring boards, the
minimum spacing between adjacent internal foils of opposite
polarity and between an internal foil and a plated-through hole
is 1/32 inch (0.79 mm). When these foils are in circuits
described in 35.1.11 or 35.1.12, no spacing is specified.
N/A
Exception No. 5: The spacing requirements in
Tables 35.1 and 35.2 are not required to apply to inherent
spacings of a component such as a switch, lampholder, power
switching semiconductor, or a motor. See 35.1.6.
N/A
Exception No. 6: Spacings within a transformer shall be
provided in accordance with Table 26.2 at locations that are not
insulated, including those with film-coated magnet wire.
P
Exception No. 7: Spacing requirements do not apply between
adjacent terminals of a power switching semiconductor device
including the connection points of the terminals of the device.
N/A
Exception No. 8: The spacing requirements of 35.1.1 do not
apply when the alternative spacings of 35.2 are met.
N/A
Exception No. 9: The spacing requirements of 35.1.1 shall not
apply to areas between live parts potted in epoxy or equivalent
material. See 35.1.2.
N/A
35.1.2
With reference to Exception No. 9 to 35.1.1, epoxy or
equivalent material is able to be used to reduce spacings, when
all of the following are met:
N/A
a) Spacings of minimum1/32 inch (0.8 mm) are maintained
prior to application of the encapsulant;
N/A
b) There are no significant voids in the encapsulant;
N/A
c) The encapsulant is minimum1/32 inch thick;
N/A
d) The area of reduced spacing, with encapsulant applied,
withstands the applicable Dielectric Voltage Withstand Test
described in Section 43; and
N/A
Exception: When the normal operating potential between the
parts under consideration does not exceed600 V rms, the
dielectric test is not required to be conducted.
N/A