Effective March 2, 2015

Standard Information
Standard Number:
UL 935
Standard Name:
Fluorescent-Lamp Ballasts
Standard Edition and Issue Date:
10th Edition Dated May 21, 2001
Date of Revisions:
August 7, 2014
Date of Previous Revisions to Standard:
10th Edition Revised December 6, 2013 (Admin)
Effective Date of New/Revised Requirements

Effective Date (see Schedule below): March 2, 2015

Impact, Overview, Fees and Action Required

Impact Statement:  A review of all Listing Reports is necessary to determine which products comply with new/revised requirements and which products will require re-evaluation. NOTE:  Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on Effective Date noted above, unless the product is found to comply with new/revised requirements.

Overview of Changes:  Added new requirements (Supplement SC) for line-dimmable ballasts, and Revised requirements (Section 30 deleted and Added Supplement SD) for Type CC Ballasts and Arcing Test). Specific details of new/revised requirements are found in table below.

Schedule:  So that shipping of products with Listing Marks will not be interrupted, an approximate schedule has been established to ensure Listing Reports are found compliant by Effective Date:

  • NOTE: Due to the URGENCY identified by the SDO of an Effective Date of 6 months, Intertek will immediately begin to review all Reports. Update if compliance is verified or issue Findings Letter/Quote for any re-evaluations needed.
  • October 3, 2014 = 5 Month Quote Cut-off – Quotes returned for necessary re-evaluations
  • February 2, 2015 = 30 Day Warning – Client advised of all non-compliant Reports to be Suspended
  • March 2, 2015 = Effective Date – ATM Suspended for all non-compliant Reports

Fees:  An initial review of Listing Report (s) will be covered by a direct billing project and will be invoiced at not more than $1000 per report.

Client Action Required:

Information – To assist our Engineer with review of your Listing Reports, please submit technical information in response to the new/revised paragraphs noted in the attached or explain why these new/revised requirements do not apply to your product (s).

Current Listings Not Active? – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records. We will do this at no charge as long as Intertek is notified in writing prior to the review of your reports.

Description of New/Revised Technical Requirements

NOTE: Additions to existing requirements are underlined and deletions are shown lined out below.

30.1, 30.2, 30.3, 30.4, Figure 30.1 Deleted. See new Supplement SD
45.5.11 Deleted. This was a simple reference back to Section 30, also deleted.
Supplement SC Add new Supplement SC, consisting of SC1-SC3 for line-connected solid state dimmable.
SC1 SC1.1-SC1.3 – Scope Statement
SC2 SC2.1-SC2.3 – Normal Temperature and Abnormal Temperature Tests
SC3 SC3.1 - Markings
Supplement SD New Supplement SD added in place of deleted Section 30 (special arcing tests for ballasts marked “CC” (CC=Commercial Cabinets).
SD1 SD1.1-SD1.2 – Scope Statement
SD2.1 General
SD2.2 Test Procedures
SD3 SD3.1-SD3.5 – Test Equipment referring to figures SD3.1 – SD3.3.
SD4 SD4.1-SD4.2 – Markings

CUSTOMERS PLEASE NOTE: This Table and column "Verdict" can be used in determining how your current or future production is or will be in compliance with new/revised requirements.

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