CT & Harvi Requirements

Here are the CT & Harvi requirements for Zappi Installation to measure power supply, PV supply (Solar) and Battery.

Single Phase Zappi (7KW) comes with 1 x CT Clamp to measure the grid, but can wire up to 3 x CTs internally for PV or battery monitoring. A Harvi is required for additional CTs.

Three Phase Zappi (22KW) come with 3 x CT Clamps to measure the grid and can only wire up to 3 CTs internally. Harvi's are required for additional CTs.

If you have any questions please contact us.

 Single Phase Power with 7kW Zappi Hardware Guidelines

Solar Battery Harvi Additional CTs Required
No No 0 0
Yes No 0 1
Yes AC 0 2
Yes DC 0 1

Three Phase Power with 22kW Zappi Hardware Guidelines

Solar Battery Harvi Additional CTs Required
3 Phase No 1 3
3 Phase AC 2 4
3 Phase DC 1 3
1 Phase No 1 1
1 Phase AC 1 2
1 Phase DC 1 1
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