LM-98-24 | Approved Method: Measuring In-Situ Temperature of Solid-State Lighting Components in Lamps and Luminaires | An American National Standard

Approved Method: Measuring In-Situ Temperature of Solid-State Lighting Components in Lamps and Luminaires

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ANSI/IES LM-98-24
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-98-24 Category: Tag:

Product Description

Approved American National StandardIntended Audience: Testing laboratories, energy efficiency organizations and regulators, manufacturers of lighting products, lighting specifiers. Description: Learn how to obtain and reproduce in-situ temperature of SSL component measurements under standard operating conditions.

Page count: 23 pages
Publisher: Illuminating Engineering Society (2023)
SKU: ANSI/IES LM-98-24
ISBN-13: 978-0-87995-474-1
Collection: Lighting Measurement and Testing
Previous edition: n/a

Chapters:

  • 1.0 Introduction and Scope
    2.0 Normative References
    3.0 Definitions
    4.0 Physical and Environmental Conditions
    5.0 Electrical Conditions
    6.0 Preparation for Measurements
    7.0 Thermal and Electrical Measurement Methods and Procedures
    8.0 Test Report
    9.0 Measurement Uncertainty

Citation Format:
Illuminating Engineering Society. ANSI/IES LM-98-24, Approved Method: Measuring In-Situ Temperature of Solid-State Lighting Components in Lamps and Luminaires. New York: IES; 2024.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Normative References
  • 2.1 ANSI/IES LM-80-21
  • 2.2 ANSI/IES LS-1-22
  • 2.3 ASTM Standard E230/E230M-17
  • 2.4 Conditionally Normative References
  • 2.4.1 UL 153
  • 2.4.2 UL 1598
  • 2.4.3 UL 1993
  • 2.4.4 UL 2108
  • 2.4.5 UL 8800
  • 3.0 Defintions
  • 3.1 Ambient Temperature (TA)
  • 3.2 Device Under Test (DUT)
  • 3.3 Drive Current
  • 3.4 Driver Case Temperature Measurement Point (TMPC)
  • 3.5 Driver Case TMPC Temperature (TC)
  • 3.6 SSL COMPONENT Temperature Measurement Point (TMPS)
  • 3.7 SSL Component TMPS Temperature (TS)
  • 4.0 Physical and Environmental Conditions
  • 4.1 General
  • 4.2 Humidity
  • 4.3 Ambient Temperature and Air Movement
  • 4.4 Temperature Measurement Equipment Or System
  • 5.0 Electrical Conditions
  • 5.1 DC Voltage Regulation
  • 5.2 AC Voltage Regulation
  • 5.3 Monitoring of Driver Input and Output
  • 5.4 Drive Current
  • 6.0 Preparation for Measurements
  • 6.1 In-Situ Primary Application
  • 6.1.1 Portable Lamps and Luminaires (Conditionally Normative Reference: UL 153)
  • 6.1.2 Lamps (Conditional Normative Reference: UL 1993)
  • 6.1.3 Luminaires (Conditional Normative Reference: UL 1598 and UL 2108)
  • 6.1.4 Luminaires for Low Voltage Lighting Systems (Conditionally Normative Reference: UL 2108)
  • 6.1.5 Other Mounting
  • 6.2 Thermocouple Location Selection for Solid State Components
  • 6.3 Thermocouple Location Selection for Driver
  • 7.0 Thermal and Electrical Measurement Methods and Procedures
  • 7.1 DUT Thermal Stability
  • 7.2 DUT IN-SITU TEMPERATURE
  • 7.3 Data Normalization
  • 7.4 Elevated Ambient Temperature
  • 7.5 Reduced Ambient Temperature
  • 8.0 Test Report
  • 8.1 Administrative Information
  • 8.2 DUT Identification
  • 8.3 Test Conditions and Measurements
  • 8.4 Test Equipment
  • 9.0 Measurement Uncertainty
  • Annex A – Thermocouple Location and Attachment Guide
  • A.1 Attachment Guide
  • A.2 Densely Packed Arrays and Thermocouple Location: Troubleshooting TMP Location Issues
  • Annex B – LED Drive Current
  • Annex C – Example Guide For Using ANSI/IES LM-98
  • Informative References