3 CT wiring
For a 3-phase 3-wire system, the meter
calculates residual current for Ground.
For a 3-phase 4-wire system, the meter
calculates residual current for Neutral.
For a 3-phase 3-wire system, the meter
measures the residual current for Ground at I4.
For a 3-phase 4-wire system, the meter
measures the residual current for Neutral at I4.
4 CT wiring
For a 3-phase 4-wire system, the meter
calculates residual current for Ground.
For a 3-phase 4-wire system, the meter
measures the residual current for Ground at I5.
Functional ground
The meter’s functional ground terminal must be wired for optimal performance.
Use the supplied ferrite when terminating the functional ground terminal to earth ground. Make
sure the ground wire is looped through, around and back through the ferrite as shown.
9810 series - User manual Installation and commissioning
7EN05-0390-08 59
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