FAQ
1. How do I select the right GP split-core AC current transformer?
Select a GP current transformer according to your operating current, cable diameter, available installation space, and meter input requirements. The window must accommodate the insulated conductor, and the rated output must match the connected instrument. Share these details with HEYI to confirm a suitable model and current ratio.
2. What output options are available for GP current transformers?
Output options depend on the model. GP-16 and GP-25 are listed with mA or 0.333 V output options, while GP-30, GP-55, and GP-80 are listed with 5 A outputs. Confirm the required ratio and output before ordering, as current-output and voltage-output CTs require compatible meter inputs.
3. Can I install a GP split-core current transformer without disconnecting the primary cable?
The split-core design allows the CT to open and fit around an existing cable without disconnecting the conductor, making it suitable for retrofit energy monitoring projects. Installation must follow site electrical safety procedures. Ensure the core mating surfaces are clean and the locking mechanism is fully closed.
4. What accuracy classes are available for GP current transformers?
The GP series lists accuracy classes 0.5, 1.0, and 3.0, depending on the selected configuration. Measurement performance also depends on the operating current, connected burden, and correct core closure. For projects with specific accuracy requirements, confirm the applicable current range, rated burden, and test conditions before ordering.
5. What wiring and connector details should I confirm before ordering?
Confirm the output type, lead length, connector requirements, and meter terminal arrangement. Provide the meter model or input specifications so the wiring configuration can be checked. Follow the specified polarity during installation. For current-output versions, never leave the secondary circuit open while primary current is flowing.
