![](https://pimcore-acc.eleq.com/Products/GSK/GSK.png)
GSK 400
![](https://pimcore-acc.eleq.com/WVT%20.jpg)
For the customized design of your ELEQ GSK transformer the following information is required:
Mandatory
• Rated primary current
• Rated secondary current
• Rated output
• Accuracy class
• Frequency
Optional
• Terminal box sealable
• Earth-fault detection
• Other relevant requirements