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UL 1971:3ED 2002-11-29

Current

Current

The latest, up-to-date edition.

Signaling Devices for the Deaf and Hard of Hearing

Available format(s)

Hardcopy

Published date

29-11-2002

$1,232.59
Including GST where applicable

Foreword
Introduction
1 Scope
2 General
3 Glossary
4 Instructions and drawings
Construction
5 Enclosures
6 Covers
7 Ventilating openings
8 Corrosion protection
9 Insulating materials
10 Mounting of parts
11 Operating mechanisms
12 Field-wiring connections - permanently connected
     products
13 Field-wiring connections - cord connected products
14 Polarization
15 Current-carrying parts
16 Internal wiring
17 Interconnecting cords and cables
18 External circuit connections
19 Printed-circuit boards
20 Motor overcurrent protection
21 Grounding for products connected to the branch
     circuit
22 Class 2 power units
23 Spacings
24 Servicing protection
Performance
25 General
26 Normal operation and electrical supervision tests
27 Signal strength and format test
28 Electrical measurements
29 Variable voltage operation test
30 Component temperature test
31 Variable ambient tests
32 Overload test
33 Endurance test
34 Transient tests
35 Vibration test
36 Electric shock current test
37 Leakage current test
38 Dielectric voltage-withstand test
39 Component failure test
40 Abnormal operation and burnout test
41 Drop test
42 Impact test
43 Crush test
44 Strain relief test
45 Indoor corrosion test
46 Special terminal assemblies tests
Installation and operating instructions
47 General
Markings
48 General
49 Permanence of marking
Appendix
A Standards for components

This revision to ANSI/UL 1971 includes Revision to the Signal Strength and Format Test to Address LED Strobes.

DocumentType
Standard
Pages
0
ProductNote
NEW CHILD REV 6 2018 IS NOW ADDED.
PublisherName
Underwriters Laboratories
Status
Current

1.1 These requirements cover emergency-signaling devices for the hearing impaired.

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UL 864:10ED 2014-12-01 Standard for Control Units and Accessories for Fire Alarm Systems
NEMA SB 2:2016 Training Manual on Fire Alarm Systems
UL 2572:2ED 2016-03-28 Mass Notification Systems
UL 60079-0:6ED 2013-07 Explosive Atmospheres - Part 0: Equipment - General Requirements

UL 1236:8ED 2015-04-21 Battery Chargers for Charging Engine-Starter Batteries
UL 863:8ED 2007-11-16 Standard for Time-Indicating and -Recording Appliances
UL 1439:5ED 2015-04-21 Tests for Sharpness of Edges on Equipment
UL 864:10ED 2014-12-01 Standard for Control Units and Accessories for Fire Alarm Systems
UL 1863:4ED 2004-05-14 Standard for Communications-Circuit Accessories
UL 506:14ED 2017-06-02 Specialty Transformers
UL 1097:6ED 2012-02-01 Double Insulation Systems for Use in Electrical Equipment
UL 1283:7ED 2017-05-17 Electromagnetic Interference Filters
UL 83:16ED 2017-07-28 Standard for Thermoplastic-Insulated Wires and Cables
UL 514C:4ED 2014-04-08 Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
UL 985:6ED 2015-05-15 Household Fire Warning System Units
UL 746A:6ED 2012-09-06 Polymeric Materials - Short Term Property Evaluations
UL 1577:5ED 2014-04-25 Optical Isolators
UL 496:14ED 2017-09-05 Lampholders

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