with filament transformers (often combined with additional electronic
ignition impulse generator), it allows to control tubes with 38mm as
well as tubes with 26mm diameter to ca. 1% down (depending on the product/model).
If lights/lamps are with conventional ballasts, filament transformer
or electronic ignition generators are neccessary, compensation and interference
suppression capacitor are only allowed parallel to the mains, minimum
load resistor is necessary.
Wiring to the lights/lamps: 4 wires (L,N,PE, control Phase)
To be observed: because of the unfavourable cos phi of the lights/lamps,
the dimmer should be loaded only 40% (Dimmer 2kW = 800 W fluorescent
2) Older electronic ballasts, produced at the years
ca. 1987-1993 need no filament transformers, however an additional conventional
ballast is often needed for dimming and is used as filter throttle.
A high qualitative control down to 30% brightness is possible.
Attention: not all electronic ballasts are dimmable,
please contact the factory for engineering assistance!
Wiring to the lights/lamps: 3 wires (control Phase, N, PE)
Capacity: The dimmer capacity can be used up to 90%.
3) Direct dimmable electronic ballasts with 10V interface
need no dimmer device. Since the dimming is done in the electronic ballasts
itself, no control device is necessary. These electronic ballasts allow
a highly, fully flicker-free control up to 1% down (depending on the
Wiring to the lights/lamps: 3 wires (L, N, PE) and 2 wires for control
voltage 10V (on every light/lamp !)
Attention: some older models starts on with the full
brightness when the mains voltage is put up and goes then slowly to
the selected brightness value.
4) Direct dimmable digital electronic ballasts (Zumtobel
/ Luxmate / Tridonic)
similar to the devices 3), however the control is done through digital
commands. These electronic ballasts can be controlled through DSI-Modules
(DSI-004) too which do the conversion of the 1-10V signal, therefore
they can be used with all devices for electronic ballasts with 10V interface
Adjustment level: about 1-100%, wiring similar to 3)
Attention: the ON and OFF switching of the digital
electronic ballasts is done through digital commands of the DSI-Modules,
the electronic ballasts itself remains permanent on the mains.
5) DALI (Digital Addressable Lighting Interface) electronic
are direct dimmable digital electronic ballasts from various producer/manufacturers,
similar to the electronic ballasts according to 4). The decisive difference
exist in, that on one hand additional Preset, Switch, and Re-registration
functions will be taken onto the system, on the other hand there is
no dependency on any supplier, because various european manufacturers
supports these system.
Adjustment level: about 1-100%, the electronic ballasts
remains permanent on the mains and will be switched ON and OFF through