Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 48 of 75
b) Audibility is capable of being used as a trouble indicator for
an electrical supervision circuit;
N/A
c) A field strength of3 volts per meter (0.91 volts per foot) is to
be used for the Radiated EMI Test; and
N/A
d) Exposure Class H5 is to be used for the Humidity Test.
N/A
37
Accessible Signal Circuits
No Accessible Signal
Circuits
N/A
37.1
The requirements in 37.2 and 37.3 apply to accessible signal
circuits having provision for external connections such as
RS232 communication ports and similar equipment.
N/A
37.2
A signal circuit that extends out of a unit shall be isolated from
internal circuits having a voltage involving a risk of electric
shock by any of the following or the equivalent:
N/A
a) An optical isolator having an isolation voltage rating of not
less than the dielectric voltage-withstand test potential required
in 43.1.1 and complying with the requirements in the Standard
for Optical Isolators, UL 1577;
N/A
b) An isolation transformer complying with the requirements in
the Standard for Class2 Power Units, UL 1310, or the
Standards for Low Voltage Transformers - Part 1: General
Requirements, UL 5085-1, and Low Voltage Transformers -
Part 3: Class 2 and Class 3 Transformers, UL 5085-3;
N/A
c) An isolation transformer complying with the requirements
in26.1.4 - 26.2.4;
N/A
d) An electro-mechanical relay complying with the
requirements in the Standard for Industrial Control
Equipment, UL 508; or
N/A
e) A voltage regulating network when:
N/A
1) The voltage being isolated is not derived from the ac input
circuit; and
N/A
2) The network does not show a risk of electric shock at the
external signal circuits as a result of a failure mode and effect
analysis, in accordance with the method described in the
Standard for Tests for Safety Related Controls Employing
Solid-State Devices, UL 991.
N/A
37.3
The maximum voltage and current available from an accessible
signal circuit shall comply with the requirements in 36.5 - 36.12.
No Accessible Signal
Circuits
N/A
37.4
The maximum power available from an accessible signal circuit
that employs an overcurrent protection device to limit the
current, as described in the Exception to 36.5, shall not exceed
the values specified in Table 37.1.
No Accessible Signal
Circuits
N/A
38
Class 2 and Class 3 Output Circuits
No Class 2 and Class 3
Output Circuits
N/A
38.1
When an output is marked or otherwise identified as being
Class 2, that output shall comply with the construction,
performance, and marking requirements described in the
Standard for Class 2 Power Units, UL 1310.
N/A