![Switch Module](https://d27wgn5g4t3wja.cloudfront.net/img/2061b726-3270-4d0f-8151-4b8a8025259c/351773.png)
Switch Module
STCS - Altanova Group
The external module STCS allows performing automatically the following PT tests: ratio per tap; winding resistance; OLTC dynamic test. The connection to the transformer under test, to STS and to the measurement taps is performed just once; then, all transformer tests are performed without interruptions.