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4.5 Norms and approvals

OTHER ASPECTS

5 1

EMERGENCY

LIGHTING

Most electronic ballasts are suitable for use in emergency lighting

installations. Distinction must, however, be made between centralised

and decentralised emergency lighting. Provided the correct voltages

are applied, electronic ballasts can be used in centralised installations.

When talking about a decentralised emergency lighting set-up, many

different configurations are possible. In general the emergency

converter must have a four-pole switch-over relay to ensure that the

wiring between the HF ballast and the lamp is completely shut off

when the emergency lighting is in operation. Interference from the

emergency converter to the HF ballast is then out of the question.

Some emergency lighting installations equipped with a three-pole

switch-over relay can also be used in combination with HF electronic

ballasts, but this has to be checked and warranted by the emergency

lighting supplier and installer.

Fluorescent lamps can be dimmed with dimmable HF electronic

ballasts, such as the Philips HF-REGULATOR types.

Philips HF-REGULATOR ballasts can be controlled by a 1-10 V DC

input from various types of regulating systems.

In Fig. 15, an example is shown of an electronic potentiometer

(LPS 100) regulating the dimming level via the +/- DC input on the

HF-REGULATOR ballast.

It can be seen that a total number of up to 100 HF-R ballasts

The control wiring must be dealt with like 230 V wiring.

For more information on the installation of different control systems,

contact your local sales agent.

5 2

HF BALLASTS AND DIMMING

Fig. 15. LPS 100 potentiometer.

1 2

274264.5 Norms and approvalsOTHER ASPECTS55 1EMERGENCYLIGHTINGMost electronic ballasts are suitable for use in emergency lightinginstallations. Disti

SUPPORT NEEDED?295285.2 HF ballasts and dimmingMORE INFORMATION OR6Readers who want further information or support on installationaspects of HF elect

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Philips LPS 100 Manual do Utilizador