SIET Transformer Hong Kong
  SIET was established in 1988 and has its registered office and factory in Silea, province of Treviso. From there Siet sells transformers and accessories to the neon industry worldwide.

The superb quality of SIET Neon Transformer makes it fully complies with various standards and regulations (such as ENEC, IMQ,SEV, VDE, CE, UL, etc) with no need for alterations. Siet has also been qualified for International ISO 9001:2000 certificate of quality and service.   

SIET High Voltage Transformer
  Our Siet products are 100% made in Italy and 100% imported from Italy, to protect your benefit, please don't buy counterfeit products.
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With it's strong steel container of electro-galvanised plate, coated with thermosetting polyester powders,  the whole transformer is surrounded by a shield at zero potential that is higly resistant to atmospheric conditions, and is prevented from splitting and thermal dilatation (known to cause cracks). The transformer is built around a patented magnetic core of special low-leakage ferromagnetic alloy, which limits heat loss, resulting in a much lower input current in the absence of load.

The two independant secondary windings are earthed by means of a fault detector. Impregnation with epoxy resin plus treated mineral excipient fillers is carried out under hard vacuum and a controlled atmosphere and ensures excellent heat conductivity and dielectric characteristics.

There are still many special features and all these make the Siet Transformer a class above all the other transformers. Due to these uncommon characteristics it has penetrated even the most difficult markets in the most varied of climates.

Special Transformer up to 200kV (information available upon request).

  Structural Diagram  
  Example of Installation SIET Cold Cathode Lighting

Model Listing up to 200kV

SIET Project References
Italian Coil and Core Transformer


We challenged the technical limits in the development of a very small size coil and core transformer in the weight of 1.8kg only for cold cathode and neon signs. Ideal for narrow space, small channel letters, cove lighting and false ceilings, with the proven of its reliability and durabily, least interference with metal objects because of its low frequency current, enabling your lamps to run 24/7 (within specification).

Product Details


SIET mini coil core transformer


Where atmospheric agents are less aggressive, the same transformer has been put in a strong, self-extinguishing plastic container suitable for indoor applications, with reduced height and light colour housing.

Like the Metalbox, it is impregnated with special resin, the steel screws are treated with Dacromet, the wire-clamping plates are in nickel-plated brass.

  LEXADISTOP is the same as LEXABOX but built-in with the earth leakage switch (Distop).  
Structural Diagram

Model Listing

product: LEXTERIOR 200mA TWIN 2x990/200 is even Brighter!

Electromechanical transformers Italy


    This device (Dimmer) allows a brightness variability through the control of the neon transformer supply tension from 0 to 100%; it can be connected to more than one transformer at a time through the STAR connection boxes until the maximum capacity allowed by the value indicated in the plate.

The dimmeration can be obtained in different ways, depending on the preferences:
1.) Manually, through a remote control in a wall embedded box.
2.) Through a twilight photocell that can work also as a save energy for the electrical consume reduction
3.) Programmable through PLC system: intensity variations are programmed at will.

This system is a valid answer to the problem of luminous pollution because it allows an energetic saving through programming a light intensity reduction at fixed times.

High Voltage Transformer Dimmer
more technical details on request.


MiniCompak and MiniBlau are models with very limited dimensions suitable for applications where space is at a premium.


Siet mini converter

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