August 15, 2014 — Spellman High Voltage Ltd. announced that it has received a certificate of qualification from Underwriters Laboratories Inc. (UL) stating that the company has been assessed and found eligible to participate in UL's Client Test Data Program (CTDP). The CTDP allows Spellman to test high voltage power supplies in support of UL Mark certification at Spellman's Pulborough facility without the need for a client engineer from UL to witness the testing.
The assessment process involved assessment of the documented procedures and policies to assure accuracy and precision in performing tests, obtaining data and reporting results. It also involved verification of appropriate physical resources, equipment and personnel as well as scheduled calibration of measurement instruments in Spellman's engineering labs and in its quality department. These calibrated instruments must be routinely calibrated against UKAS (U.K. Accreditation Service) laboratories standards. The assessment verified that all personnel knew the testing procedures and the calibration procedure.
By qualifying for the CTDP program, data from Spellman's tests are now submitted to UL, and approval from UL can be granted in as little as five days. In the past, Spellman has had to wait for UL engineers to come to its facility in Pulborough and witness the testing. This delay generally added four to six weeks to the approval process. Spellman can now reduce the time it takes to get new UL-approved products to market.
Spellman’s U.S. design center and corporate headquarters in Hauppauge, N.Y., has been participating in UL’s Client Test Data Program since 2006.
For more information: www.spellmanhv.com
November 21, 2025 
