Megger EVCA210, User Manual

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6. Testing a Charging Point
The PE Pre-Test is an integral safety
feature of the EVCA210 adaptor. It
allows the operator to test the PE
conductor for possible presence of a
dangerous voltage, prior to testing the
charge point.
Under normal conditions, the PE
conductor is connected to earth and
therefore no hazardous voltage should
be present. Should a fault condition
occur e.g. if the PE conductor is
connected to a phase or any insulation
within the EVCA210 or associated plugs
and cables has been damaged, then a
hazardous situation may arise.
With the EVCA210 adaptor connected
to the charging point, touch the PE
Pre-test button with a bare finger. If the
LED indicator illuminates, then there is
a dangerous voltage present on the PE
conductor. Stop testing immediately and
investigate the circuit and rectify before
continuing. Do not touch any metal
parts while performing this test.
Possible faults are:
Voltage present on PE (e.g. connected
to phase)
PE Missing or disconnected
If the operator is isolated from ground through rubber matting or wearing gloves etc. the touch-
test result will be unreliable and an alternative method should be employed to confirm the PE
connection.
7. Electrical Testing
The EVCA210 gives the operator the ability to connect their electrical test equipment to the
charging point under test, in a controlled and safe manner, and to undertake the electrical safety
testing of the charge point and its associated circuits. With the correct cable connected and the
EVCA210 CP and PP settings correctly set (see below for details), the operator can connect either
single or multifunction test equipment to the adaptor to undertake the following live tests:
Earth loop impedance
RCD operation
Phase sequence
Proximity Pilot - PP State
www.megger.com EVCA210
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Testing a Charging Point