UL 916:5ED 2015-10

Foreword
Introduction
1 Scope
2 General
3 Glossary
Construction
4 General
5 Frame and enclosure
6 Openings in enclosures
7 Mounting
8 Mechanical assembly
9 Operating mechanism
10 Accessibility of uninsulated live parts, film-coated
    wire, and moving parts
11 Protection against corrosion
12 Insulating materials
13 Field connections
14 Current-carrying parts
15 Switches
16 Internal wiring
17 Grounding
18 Bonding of internal parts
19 Motors
20 Printed wiring boards
21 Transformers
22 Capacitors
23 Fuseholders
24 Overcurrent protection, control-circuit conductors
25 Overload relays, thermal protectors for motors, and
    impedance-protected motors
26 Coil windings
27 Spacings
28 Clearances and creepage distances
29 Controlled-environment secondary circuits
30 Wiring space
31 Separation of circuits
32 Isolation devices
33 Connections to separate equipment
34 Interconnection of class 2 circuits
35 Barriers
Protection against injury to persons
36 General
37 Protection of users and service personnel
Performance
38 General
39 Power input test
40 Temperature test
41 Overvoltage and undervoltage test
42 Leakage current test
43 Leakage current test following humidity conditioning
44 Normal operation test
45 Abnormal operation test
46 Component breakdown test
47 Overload test
48 Endurance test
49 Dielectric voltage-withstand test
50 Volt-ampere capacity
51 Burnout test
52 Limited short-circuit test
53 Conductor short-circuit test
54 Strain relief and flexing test
55 Accelerated aging tests
56 Metallic coating thickness test
57 Rain test
58 Conduit entries strength test
59 Cover retention test
60 Bonding conductor tests
61 Glass window impact test
62 Permanence of marking
63 Component evaluation
64 Isolating resistor evaluation
Manufacturing and production tests
65 Electronic controls requiring a critical component
    evaluation
66 Production-line dielectric voltage-withstand test
67 Production-line grounding-continuity test
Ratings
68 Details
Markings
69 General
70 Wiring
71 Elevated air temperature
72 Cautionary markings
73 Instructions
Accessory equipment
74 General
75 Construction
76 Performance
77 Markings
Polymeric materials
78 General
79 Flammability of enclosure - 5 inch flame
80 Thermal aging
81 Exposure to ultraviolet light test
82 Water exposure and immersion test
83 Volume resistivity test
84 Resistance to hot-wire ignition test
85 Heat-deflection temperature test
86 Resistance to impact test
87 Resistance to crushing test
88 Mold-stress evaluation
89 Dielectric strength test
90 Knockout test
91 Abnormal operation test
92 Resistance to ignition test
93 Creep and overcurrent test
Appendix
A Standards for components

This revision of UL 916 dated October 21, 2021 includes changes in requirements in Supplement SA to address energy management equipment that use remote or cloud-based interface for communication and to clarify functional safety requirements referencing UL 60730-1; SA1, SA1.4, SA1.5, SA2.1, SA2.2, SA2.4, SA2.6 – SA2.9, SA3.1 – SA3.6, Section SA4 and SA5.6.

These requirements cover energy management equipment and associated sensing devices rated 600 volts or less and intended for installation in accordance with the National Electrical Code, NFPA 70.