Unified fluorescent lamp dimming standard calculations

IEC/TR 62750:2012(E) applies to fluorescent lamp dimming systems. It deals with the interface of fluorescent lamps and dimming electronic controlgear. A unified framework for standardization of fluorescent lamp dimming systems and the associated parameter calculation method are described in this Technical Report.

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IEC/TR 62750

Edition 1.0 2012-02

Unified fluorescent lamp dimming standard calculations

IEC/TR 62750:2012(E)

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IEC/TR 62750


Edition 1.0 2012-02



Unified fluorescent lamp dimming standard calculations





ICS 29.140 ISBN 978-2-88912-939-3

  Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission

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– 2 – TR 62750 © IEC:2012(E)
1 Scope . 5
2 Explanation of the dimming requirements . 5
2.1 General . 5
2.2 Additional heating. 5
2.3 Cathode heating limits . 6
2.4 Substitution resistors for electronic controlgear qualification. 7
3 Determination of limit values . 8
3.1 General . 8
3.2 Minimum sum-of-squares – SoS (I ≤ I < I ) . 9
min D30 D Dtrans
3.2.1 Lamp and electronic controlgear systems – SoS' . 9
3.2.2 Electronic controlgear qualification limits – SoS . 11
3.3 Minimum cathode voltage – CV (I ≤ I < I ) . 12
min Dmin D D30
3.3.1 Lamp and electronic controlgear systems – CV' . 12
3.3.2 Electronic controlgear qualification limits – CV . 12
3.4 Maximum cathode voltage – CV (I ≤ I < I ) . 13
max Dmin D Dtrans
3.4.1 Lamp and electronic controlgear systems – CV' .

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