![](https://pimcore-acc.eleq.com/Products/GSRF%20380/GSRF380.png)
GSRF 540
![](https://pimcore-acc.eleq.com/JDO%20.jpg)
For the customized design of your ELEQ GSRF Current Transformer the following information is required:
Mandatory
• Rated primary current
• Rated secondary current
• Rated output
• Accuracy class
• Frequency
Optional
• Multi-core transformers
• Other relevant requirements