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Electrical Testing
If performing a Zs test at the charge point, the Safevolt 50 will need to be installed and operational and
the green output LED ON.
If the Safevolt
®
50 is not operational the CPC will be disconnected from the charge point and the Zs test
will fail.
For insulation testing, L, N & E should be disconnected from the input of the Safevolt
®
50.
Insulation testing will require the circuit to the charge point to be tested in two segments, i.e. supply to
Safevolt 50 and then Safevolt 50 to Chargepoint.
For each segment the Safevolt
®
50 should be disconnected from the segment under test and in the case of
Safevolt
®
50 to Chargepoint, the charge point disconnected also.
Precautions
General
The Safevolt
®
50 unit is designed to isolate the installation PME earth from the charge point CPC in the
event of a PEN conductor (PME) failure.
⚠
It is therefore important to check that no part of the CPC circuit on the output side of the Safevolt
®
50
unit is connected to any point which is directly or indirectly connected back to the building earth.
Any such connections will render the Safevolt
®
50 system ineffective.
For instance, check no secondary earth connection exists between the casing of the charge point and any
metallic part such as a DB casing or service pipe.
Special care is needed if using SWA cables as described on the next page.
Cityline Safevolt 50 User and Installation Manual
Cityline Safevolt 50 User and Installation Manual
CityEV Safevolt® 50 User and Installation Manual
