There is a significant difference in both the attention to quality and design and manufacture of step down transformers on the market.
- The majority of our stepdown transformers use toroidal (round / donut shaped) transformers (except SD110-100A, SD110-50 and SDUA-100A)
- These offer numerous benefits over the EI square transformers (used in competing models) – the toroidal transformer offers improved energy efficiency, reduced interference, less noise and minimal hum and reduced idle current
- Tortech units use a thermal cut-out (a safety feature which shuts down the transformer if it gets over temperature) and safety fuse, not simply circuit breaker switch like others, which by itself offers no thermal protection.
- The enamel wire on our transformers is double coated and 180 degree C rated to ensure thermal protection.
- All internal connections are soldered (not crimped) to improve reliability
- LED switch – The function of the Led light on Tortech stepdown transformers is indicative that the fuse has blown and is a helpful diagnostic feature, even though they have a LED switch competitor models may not have this feature.
- The toroidal magnetic cores can not be accessed and are much safer to reduce chance of shock
- For smaller then 150VA where EI transformers configuration is used, the core is earthed for safety purposes. Earthing reduces the chance of electric shock.
- All our Isolated transformers comply with AS NZS 61558 safety standards see here.
Inside a Generic Step Down Transformer
Looking inside a generic EI "Square" step down transformer with considerable safety and design differences.
Design Issue #1
No safety fuse identified. No thermal cutout.
Design Issue #2
Secondary crimp internal connection not good practice, should be soldered.
Design Issue #3
Enamel wire only low temperature rated. We use 180℃ double coat.
Design Issue #4
Internal crimped connection, not good best to solder.
Design Issue #5
Steel core should be earthed, no earth major safety matter.