Myenergi CT clamp small model (40A) – solid-core current transformer

Compact current transformer (CT) for the meeting inputs of myenergi zappi, eddi and harvi. This is the small, solid-core version: not clip-on. You feed the phase conductor through the ring, allowing very accurate measurement up to max. 40 A.

What do you use this CT for?

• Grid measurement: import/export at the main connection

• PV yield: measurement on the AC side of your inverter

• Load monitoring: separate group, load point or heat pump monitoring

• Zappi/eddi logic: smart control of surplus, export-limiting and priorities

Important: this is a solid-core CT. The cable must be de-energised to feed through the CT. Only suitable for users/installers with electrical knowledge.

Plus points

• Small & precise – ideal where space is limited in the meter cupboard

• Up to 40 A measuring current – suitable for most household groups

• Clear arrow direction on housing for current direction

• + / – marking on the wires for correct polarity

• Seamless integration with myenergi devices

Compatibility (myenergi)

• zappi v1: max. 2 wired CTs directly; for 3-phase measurement additional CTs via harvi

• zappi v2: up to 3 wired CTs directly; additional CTs possible wired or via harvi

• eddi: 1 wired CT as standard, expandable (harvi)
  (An additional CT for PV is not required for operation, but for a complete energy overview in display/app).

Installation tips (brief)

1. Disconnect voltage and check.

2. Select the phase conductor on which you want to measure (one wire through the CT).

3. Feed the wire through the CT ring in arrow direction from source → consumption/network.

4. Connect + and – to the CT input of zappi/eddi/harvi.

5. Calibrate/check in the menu (direction & value).

Dimensions (mm)

• A (bore/through hole): 7,11

• B (outer diameter): 23.42

• C (housing height): 29.46

• D (depth): 11,05

• E (cable connection, body length): 100
  (See drawing for positions A-E.)

Technical summary

• Type: solid-core CT (small model)

• Measuring range: up to 40 A AC

• Application: grid, PV inverter or individual group

• Connection: 2-wire signal cable, marked + / –

• Compatible with: myenergi zappi, eddi, harvi