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circuit under test, "no" is displayed on the LCD and no
measurement can be made. In this case, disable the ATT
function and make measurement. Be aware that if the ATT
mode is disabled, RCDs may trip.
▲
ATT mode is automatically enabled after one measurement
when making a measurement with ATT mode disabled.
4.1.2 Wiring Check
After the connection, ensure that the LEDs are is in the following
status before pressing the test button.
▲
P-E Green LED must be ON
▲
P-N Green LED must be ON
▲
Red LED must be OFF
If the above sequence is NOT displayed or the RED LED is on
for any reason, DO NOT PROCEED AS THERE IS INCORRECT
WIRING. The cause of the fault must be investigated and
rectified.
4.1.3 Voltage Measurement
When the instrument is first connected to the system, it will
display the phase-earth voltage which is updated every 1s. This
mode is cancelled the first time the test button is pressed. If this
voltage is not normal or as expected, DO NOT PROCEED.
NOTE: This is a single phase (230V AC) instrument and
under
no circumstances
should it be connected to 2- phases or a
voltage exceeding 10%.
If the input voltage is greater than 260V the display will indicate
'VP-E Hi' and Loop or PSC measurements can not be made even
if the Test button is pressed.
