FAQ

An off-load tap changer (OLTC) or De-Energized Tap Changer (DETC) allows the output voltage to be adjusted by changing the taps in the transformer using… Read More »What is an Off-Load Tap Changer ( DETC) ?

ASP has been actively involved in the original development of industry reference standards, contributing to the evolution of best practices in tap changer technology. Our… Read More »International Standarts

We take pride in the French origin of our products, as demonstrated by the following: • Our products are entirely designed and engineered in-house by… Read More »Are ASP Off-Load Tap Changers Made in France?

The tap changer you should select depends on various features such as: Maximum tension class Maximum intensity Number of positions required But also any other… Read More »Which type of Off-Load Tap Changer should I choose among those presented in our online catalog?

Yes, if you are looking for an off-load tap-changer with features that are not presented in our online catalog, we can design and manufacture it… Read More »Does ASP manufacture custom-made devices?

We can help you if you need any explanation for handling the tap changer. For instance, if a change is required for your project or… Read More »How to carry out specific operation on the Off-Load Tap Changer purchased?

If the transformer is to be used in extreme weather conditions, such as corrosive environments or low temperatures (down to -50°), here is information that… Read More »Is it possible to use our Off-Load Tap Changers in difficult weather conditions?

Our tap changers are compatible with following oils : Mineral oils Synthetic oils FR3 natural ester dielectric (we recommend to use a higher class voltage… Read More »Oil compatibility

The temperature limits of our devices are determined by the materials used in their construction, including plastics, Bakelite paper, and seals. Based on the manufacturer’s… Read More »Temperature limits

We recommend that the tap changer be operated several times on a full range of taps once a year to ensure that any deposits are… Read More »Maintenance on our Off-Load Tap Changers