Connecting the Voltage Supply greater than 63 A

Qualified person

Current transformers must be installed for a voltage supply > 63 A.

15000264972

The following figure shows a connection example in three-phase TN and TT utility grids in the case of installation at the point of interconnection.

Additionally required material (not included in the scope of delivery):

  • 3 x current transformers (recommendation: 5 A secondary current, accuracy class at least 1). Current transformers must be installed for a voltage supply > 63 A.

  • Connection cables for current transformers (per datasheet of current transformer).

Procedure:

  1. Disconnect the connection point from voltage sources and make sure it cannot be reconnected.
  2. Connect one current transformer to each line conductor L1, L2 and L3.
  3. On each current transformer, connect 1 connection cable for secondary current measurement to terminals k/S1 and l/S2.
  4. Connect the connection cables for current measurement to the screw terminals L1, L2, and L3 of the Sunny Home Manager. To do this, open each screw terminal using a cross-head screwdriver, insert the conductor into the contact terminal and tighten the screw using a cross-head screwdriver (torque: 2.0 Nm).
  5. Connect the connection cables for voltage measurement to the screw terminals L1, L2 and L3 at the output of the Sunny Home Manager. To do this, open each screw terminal using a cross-head screwdriver, insert the conductor into the contact terminal and tighten the screw using a cross-head screwdriver (torque: 2.0 Nm).
  6. Connect the connection cables for voltage measurement L1, L2 and L3 (solid gray line) to the corresponding line conductors L1, L2 and L3.
    Connecting the Voltage Supply up to 63 A in Split-Phase Utility Grids
    Connection for Unidirectional Use