21e37 – Working Voltage *DRAFT INSTRUCTIONS Due Date for Results: 10th April 2022 Result Entry will close at MIDNIGHT AUSTRALIAN EASTERN STANDARD TIME on the due date PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE COMMENCING WARNING: Sample will be hazardous when energised. It is essential to take suitable precautions. Introduction Proficiency testing should be an accurate representation of each laboratory’s day-to-day operations. Consequently, laboratories should treat this program in the same manner as a customer request and follow its normal procedures for all aspects of their work. This includes contract review, safety assessments, laboratory testing and the reporting of results. Reference Standards and other Applicable Documents The following standards and any associated published amendments apply. IEC 60335-1 IEC 60745-1 IEC 61347-1 IEC 60598-1 IEC 61558-1 IEC 60065 (operating voltage) IEC 62368-1 IEC 60950-1 IEC 61010-1 IEC 60601-1 AND ISO/IEC 17025 Previous editions of the above standards may be used after comparing with the above-cited editions. Due to similarities in test procedures, other standards may be applicable. It is the laboratory’s responsibility to compare their normal test procedure with the requirements of the cited standards. Sample Description The supplied sample is a 25 W single input, single output switch mode power supply. Test Conditions Separate PT program entries are provided for 50 Hz and 60 Hz results. Laboratories should submit results for both programs if they can generate both input voltage/ frequencies. Table 1: Test Conditions Input Voltage & Frequency Output Voltage / Load 240 V 50 Hz 12 V DC / 1.5 A 120 V 60 Hz 12 V DC / 1.5 A Test Instructions 1. The specified voltages are to be applied without any supply voltage tolerance. 2. Connect EUT with power source, conductor thickness (cross-sectional area) must be as close as possible to 1.5 mm2. 3. Connect the EUT to a suitable laboratory power source with a TN-S network and turn it on. 4. Input and output conditions are given in Table 1. 5. Determine the highest working voltage of the EUT. Both primary and secondary circuit has to be included in the evaluation. 6. Use the Circuit diagram ( given on page 3) as a guide. 7. Participants are allowed to remove the top casing to test the sample. 13 December 2021 ©IFM Quality Services Pty Ltd Page 1 of 4 21e37 – Working Voltage *DRAFT INSTRUCTIONS Due Date for Results: 10th April 2022 Result Entry will close at MIDNIGHT AUSTRALIAN EASTERN STANDARD TIME on the due date Equipment Questions Participants are required to answer the equipment questions given in Table 2. Table 2: Equipment Questions No. Question Definition Reporting Unit E00 Sample ID The ID is written on the IFM label on the box E01 Power source Report whether the supply is mains regulated or electronically controlled. E02 E03 E04 Source volt L-N The voltage across L-N of the laboratory power source Source volt L-G The voltage across L-G of the laboratory power source Source volt G-N The voltage across G-N of the laboratory power source Equipment type Report the basic equipment type (e.g. multimeter, oscilloscope) rms used to measure r.m.s. voltage. leave questions about multimeter blank if this type of equipment is not used rms meter The impedance of the equipment used for r.m.s. voltage M Ohm impedance measurement Multimeter true Report if multimeter has true rms measuring function Yes/No rms function Equipment type Report the basic equipment type (e.g. multimeter, oscilloscope) Multimeter/ peak used to measure peak voltage Oscilloscope leave questions about multimeter/ oscillscope blank if this type of equipment is not used Peak meter The impedance of the equipment used for peak voltage M Ohm impedance measurement Class I / Oscilloscope Type Report the type of oscilloscope Class II / Class III Oscilloscope Report the bandwidth of Oscilloscope MHz Bandwidth Test Probe Type. Report the test probe type used Standard applied IEC standard that was applied for this test. E05 E06 E07 E08 E09 E10 E11 E12 E13 Regulated/ Electronically controlled Vrms Vrms Vrms Multimeter/ Oscilloscope Working Voltage Measurement Table 3: Working Voltage Measurement No. Q01 Q02 Q03 Question Working Voltage rms Working Voltage peak Measurement Points 13 December 2021 Definition Result Report the maximum working voltage (rms) Vrms Report the maximum working voltage (peak) Vpeak Report points between which max. working voltage was measured. ©IFM Quality Services Pty Ltd Page 2 of 4 21e37 – Working Voltage *DRAFT INSTRUCTIONS Due Date for Results: 10th April 2022 Result Entry will close at MIDNIGHT AUSTRALIAN EASTERN STANDARD TIME on the due date Circuit Diagram Reporting the Results Results must be submitted on the IFM Result Entry Site For information regarding the submission of results, please refer to the Result Entry Guide Submit measured voltage waveform. • All laboratories (Oscilloscope used) must submit clear picture(s)/ screen shot(s) of waveform of the measured voltage. • The quality of the photographs shall be such that all necessary features can be clearly identified. Limit the file size to 5 Mb. • The format of the files shall be PDF. Name the PDF file with unique IFM customer number and program identifier in format; “LogonID_ 21e37” (e.g. “C00000_21e37”) and email to support@ifmqs.com.au 13 December 2021 ©IFM Quality Services Pty Ltd Page 3 of 4 21e37 – Working Voltage *DRAFT INSTRUCTIONS Due Date for Results: 10th April 2022 Result Entry will close at MIDNIGHT AUSTRALIAN EASTERN STANDARD TIME on the due date Due date • Results will not be accepted via the online result entry facility after this date. Results submitted after the due date will only be accepted upon payment of a late fee. • If the due date is extended, this will be reflected via an update to the online result entry facility. After testing and reporting Please retain the samples and test notes in the event a re-test or review is required. After the PTP, these samples can be used as references and training tools by the laboratory. Please direct questions or comments to: technical@ifmqs.com.au 13 December 2021 ©IFM Quality Services Pty Ltd Page 4 of 4