飞利浦荧光灯电子镇流器 TL5 与 PLL光源的配线

Application Note

Lamp wiring for 'TL'5 and PL-T circuits in luminaires

Philips Lighting

Business Unit Lighting Electronics & Gear

Lamp wiring for 'TL'5 and PL-T circuits in luminaires

Introduction

Historically, lamp voltages (under normal conditions) for 'TL'D, PL-L and PL-C lamps have always been below 200V. Lamp components and lamp wiring could have the same voltage rating as normal mains voltage e (< 250V). New, more efficient types of lamp like 'TL'5 and PL-T- have lower lamp currents, but higher lamp voltages.

As a result, 250V rating for lamp wiring and components is sometimes inadequate. The impact of the step from 250V-rated components/wiring to higher voltage-rated (e.g. 500V) components/wiring is described below.

European harmonized wires

The European harmonized wiring is specified in the Cenelec standard (HD 21.3.S2). Commonly used wires are classified as H05 or H07, which means:

H05: voltages up to 300V(330V*) rms; core cross-section 0.5 mm² ... 1.0 mm².

H07: voltages up to 450V(495V*) rms; core cross-section 1.5 mm² ... 400 mm².

*Maximum permissible permanent voltages are 10% above nominal value

'TL'5 and PL-T lamp voltages

1. Non-dimming systems

For all existing 'TL'5 and PL-T lamps the maximum voltages from any lamp wire to earth do not exceed 250V rms. Therefore H05 classified wiring can be used.

2. Dimming systems**

With following PL-T and 'TL'5 lamps the maximum wire-to-earth voltages exceed the maximum voltage of H05 classified wires.

1. PL-T systems:32W & 42 W

2. 'TL'5 HE systems:28W & 35W

3. 'TL'5 HO systems:49W & 54W

Depending on lamp type, the maximum voltages can increase up to 430Vrms. Therefore the use of H07 (450V rms) wiring is necessary.

HF-REGULATOR ballasts can handle a conductor cross-section of 1.5mm², but lampholders or other components are often not suitable for handling a cross-section larger than 1.0 mm². Using special wiring (not harmonized) rated 450Vrms with a conductor thickness of 0.5-1.0 mm² can be the solution. But since this is not a standard wire, this type may be difficult to obtain. Cable suppliers/manufacturers have to be consulted. For the reader's assistance, some cable suppliers are listed below. ALCATEL/ KABELMETAL BELDEN WIRE & CABLE B.V.HEW kabel

PO box 2551PO Box 9Klingsiepen 12

D-90011 Nurnberg5900 AA Venlo D-51688 Wipperfürth Germany The Netherlands Germany

Fax: +49-911-5207258Fax: +31-77-3878448Fax: +49-2267-683-194 Tel: +49-911-5207218Tel: +31-77-3878474Tel: +49-2267-683-0

**Lamp to earth voltages higher then 330V only occur at lower temperatures (< 20 °C) and at lower dimming levels (< 40%).

Note Based on the tests performed on H05 wiring and the actual

wiring-to-earth voltages, we do not expect safety or functional

risks.