sepam 20 user manual - Schneider Electric

7
Commissioning Checking phase voltage input
connections
7/28
DE52246
Description
Check to be carried out for Sepam B21 or B22.
Procedure
1. To apply a phase-to-neutral voltage to the phase 1 voltage input, connect the
single-phase voltage generator to the test terminal box using the plug provided, in
accordance with the diagram below:
2. Turn on the generator.
3. Apply the VT secondary rated phase-to-neutral voltage (Uns/3).
4. Use the SFT2841 software to check that the phase-to-neutral voltage V1 is equal
to the VT primary rated phase-to-neutral voltage (Unp/3).
5. If the residual voltage is calculated by taking the sum of the 3 voltages, use the
SFT2841 software to check that the residual voltage value is approximately equal to
the VT primary rated phase-to-neutral voltage (Unp/3).
6. Turn off the generator.
7. Proceed in the same way for the other 2 phase voltage inputs.
8. At the end of the test, put the cover back on the test terminal box.
PCRED301005EN - 06/2008