Seaward A203ES - Manual (Page 8)

OPERATING PROCEDURES
Test Application
Class 1, 3 Wire, Earthed (i.e. Household Appliance)
The Flash test is generally set between 1250 and 1500 volts.
Remove the HT probes from the scabbards.
The Yellow (low potential / earthy) probe is applied to the earth wire and the Red (high potential) probe is
applied to the Live and Neutral conductors of the item under test.
Note the preset voltage is indicated on the 0-5kV meter.
Observe the Total Leakage meter is indicating below the Q.C. standard.
A Flash over or insulation breakdown will operate the Flash Fault lamp, operate the audible warning device
and isolate the high voltage.
Remove the Flash test probes from the item under test and return them to the scabbards.
Depress the Flash Fault Reset pushbutton in order to cancel the warning devices, reset the Flash trip and
restore the Flash test voltage.
Flash Trip By–Pass (Burn Out)
When the H.T. TRIP switch is in the 125mA position the Flash Trip By–Pass (Burn Out) button may pressed
to by-pass the Flash trip in order to observe arcing in the item under test.
The By-Pass button should not be held on any longer than is necessary to locate the breakdown point.
IMPORTANT – WHEN THE BY-PASS BUTTON IS DEPRESSED THE TEST OUTPUT IS
POTENTIALLY LETHAL AND MUST BE USED BY SKILLED PERSONNEL ONLY.
OM_A203ES Page 8 of 8