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CSA C873 Series-15: Performance Requirements for Self-Ballasted LED Lamps and Retrofit Kits
Comprehensive Guide to Scope, Technical Specifications, and Compliance for General Lighting Applications
Scope and Application of CSA C873 Series-15
CSA C873 Series-15, titled “Performance of self-ballasted LED lamps and LED lamp retrofits,” establishes uniform performance criteria and testing methodologies for LED lamps intended for general lighting in residential, commercial, and industrial settings. The standard applies to self-ballasted LED lamps (integral driver) and retrofit kits that replace traditional incandescent, halogen, or compact fluorescent lamps, operating on line voltages up to 277 V AC at 50/60 Hz. It covers products with screw bases (E26, E12, GU24), pin bases (GU5.3, GU10), and other common lamp types.
The standard addresses key performance attributes including initial and maintained photometric output, electrical power consumption, color characteristics, and projected lifetime. It also provides guidance on test conditions, sampling, and reporting. CSA C873 Series-15 is harmonized with relevant US and international standards such as ANSI/IES LM-79, LM-80, TM-21, and ENERGY STAR requirements, but includes specific provisions for Canadian electrical and environmental conditions.
Technical Requirements and Performance Criteria
Photometric and Electrical Parameters
CSA C873 Series-15 defines minimum and target values for luminous flux (lumens), efficacy (lm/W), input power, power factor, and standby power. For general service lamps, minimum efficacy typically ranges from 70 lm/W to 100 lm/W depending on lamp wattage and base type. Power factor must be ≥ 0.7 for residential and ≥ 0.9 for commercial products, with mandatory total harmonic distortion limits (THD ≤ 20% at rated load). Standby power is limited to ≤ 1.0 W for lamps with integral control circuits.
| Parameter | Residential Requirement | Commercial Requirement |
|---|---|---|
| Minimum Efficacy (initial) | 70 lm/W | 85 lm/W |
| Power Factor (at full load) | ≥ 0.70 | ≥ 0.90 |
| Total Harmonic Distortion (THD) | ≤ 30% | ≤ 20% |
| Standby Power | ≤ 1.0 W | ≤ 0.5 W |
| Inrush Current (peak, 1 ms) | ≤ 50 A | ≤ 50 A |
Color Quality and Stability
The standard specifies correlated color temperature (CCT) tolerances (±150 K for ≤ 4000 K, ±250 K for > 4000 K), color rendering index (CRI ≥ 80 for general lighting, ≥ 90 for specialty applications), and chromaticity shift (Δuv ≤ 0.006 over 6000 hours). Color maintenance is assessed using the ANSI/IES TM-21 projection method based on LM-80 test data. Maximum allowable color shift over rated life is limited to a Δu′v′ ≤ 0.004.
Tip: When selecting LED lamps for spaces requiring high color fidelity (e.g., retail, healthcare), choose products with CRI ≥ 90 and R9 (deep red) ≥ 50 to satisfy both CSA C873 and human-centric lighting preferences.
Lifetime and Endurance
CSA C873 Series-15 requires manufacturers to declare a rated lamp life (L70 or L50) derived from TM-21 projections. Lamp survival must be ≥ 90% after 6000 hours of operation. Rapid cycle stress tests (2 minutes on/off, 30 seconds dwell) are conducted for 10,000 cycles to verify robustness. Additionally, the lamp must withstand 120 Vrms dielectric withstand (hi‑pot) and 50 kV surge immunity per IEC 61000-4-5.
Implementation and Testing Highlights
Testing under CSA C873 Series-15 is performed in accordance with referenced methods:
- Photometric and electrical measurements: ANSI/IES LM-79-19 — total flux, electrical power, spectral power distribution, and chromaticity using integrating sphere or goniophotometer.
- LED Lumen Depreciation: ANSI/IES LM-80-15 — in‑situ temperature measurement on LED packages/arrays, with data reported at three case temperatures.
- Lifetime projection: TM-21-19 — extrapolation using LM-80 data to estimate L70/L50 time.
- Accelerated aging: 6000 hour continuous operation at rated voltage and ambient temperature (25 °C ± 2 °C).
Warning: Many failures in LED lamps are due to driver electronics, not the LEDs themselves. Ensure that the driver complies with relevant CSA/UL component standards (e.g., CSA C22.2 No. 250.13) and that thermal management is validated through actual lamp testing, not just component analysis.
Sampling and Reporting
Manufacturers must test a minimum of 20 samples from at least three production lots. Reports must include initial photometry, electrical data, color metrics, and the complete LM-80/TM-21 analysis. A summary of stress testing results (rapid cycles, surge, dielectric) must be provided. The standard also requires a statement of rated life expressed in hours with a confidence level (L pct).
Compliance and Certification Notes
Compliance Path: Products certified to CSA C873 Series-15 typically bear the CSA marking (e.g., CSA (US)) and are listed on the CSA product database. Verification requires submission of test reports from a recognized NRTL (e.g., CSA, UL, Intertek) and a plant factory inspection. Certification to this standard is accepted by provincial energy efficiency programs in Canada, including BC Hydro, Ontario’s IESO, and Quebec’s Transition Énergétique.
Key Compliance Considerations
- Field labeling: Rated life (hours) must be printed on the lamp or packaging. Use of claims like “25,000 hr” requires projection supporting data.
- Harmonic distortion: For residential lamps, THD limits are less strict than commercial, but any product marketed for office or retail must meet the commercial threshold.
- Color consistency: Color binning per CIE 1931 (MacAdam ellipses). Four‑step (4‑SDCM) is required for dimmable lamps; six‑step (6‑SDCM) is allowed for non‑dimmable.
- Environmental conditions: The standard does not specify outdoor ratings; lamps intended for wet locations must additionally comply with CSA C22.2 No. 250.0.
Critical: Do not rely solely on component LM-80 data. CSA C873 Series-15 requires that test samples be representative of the final product assembly — including driver, heat sink, and optical components. Thermal coupling between LED modules and the housing directly affects the junction temperature and, consequently, the projected lifetime.
Frequently Asked Questions
Q: Does CSA C873 Series-15 apply to integrated LED fixtures (e.g., downlights, troffers)?
A: No. It specifically covers self-ballasted LED lamps (e.g., A‑shaped, PAR, MR) and retrofit kits that replace existing lamp types. For integrated LED luminaires, refer to CSA C22.2 No. 250.13 (luminaires) and performance criteria in ENERGY STAR or DesignLights Consortium (DLC).
A: No. It specifically covers self-ballasted LED lamps (e.g., A‑shaped, PAR, MR) and retrofit kits that replace existing lamp types. For integrated LED luminaires, refer to CSA C22.2 No. 250.13 (luminaires) and performance criteria in ENERGY STAR or DesignLights Consortium (DLC).
Q: What is the relationship between CSA C873 Series-15 and the US Energy Star program?
A: Many requirements are aligned, but CSA C873 includes additional Canadian-specific provisions (e.g., 277 V mains voltage coverage, class of operation for power factor, and acceptance of both 120 V and 347 V for select products). Certification to CSA C873 is accepted by the Canadian Standards Association for the CSA (US) mark, and by some provincial utility rebate programs that also accept ENERGY STAR.
A: Many requirements are aligned, but CSA C873 includes additional Canadian-specific provisions (e.g., 277 V mains voltage coverage, class of operation for power factor, and acceptance of both 120 V and 347 V for select products). Certification to CSA C873 is accepted by the Canadian Standards Association for the CSA (US) mark, and by some provincial utility rebate programs that also accept ENERGY STAR.
Q: How often does the standard need to be updated?
A: CSA C873 Series was first published in 2015 and reaffirmed in 2020. The CSA Technical Committee reviews it every five years. The current edition (2015) is still active, but revisions are expected to incorporate newer LM‑80 and TM‑21 versions, as well as emerging metrics like TM‑33 (flicker). Users should always check the latest version on the CSA Store.
A: CSA C873 Series was first published in 2015 and reaffirmed in 2020. The CSA Technical Committee reviews it every five years. The current edition (2015) is still active, but revisions are expected to incorporate newer LM‑80 and TM‑21 versions, as well as emerging metrics like TM‑33 (flicker). Users should always check the latest version on the CSA Store.
Q: Can a lamp be CSA C873‑certified without LM‑80 data?
A: No. LM‑80 test data for the LED packages used in the lamp is mandatory. The standard explicitly requires submission of LM‑80 reports from the LED manufacturer, plus a TM‑21 projection performed by the lamp manufacturer. Without this data, lifetime claims cannot be verified, and certification will be denied.
A: No. LM‑80 test data for the LED packages used in the lamp is mandatory. The standard explicitly requires submission of LM‑80 reports from the LED manufacturer, plus a TM‑21 projection performed by the lamp manufacturer. Without this data, lifetime claims cannot be verified, and certification will be denied.
© 2026 — Technical reference article. All standard references are property of CSA Group. For official certification, contact a recognized NRTL.