Kewtech KT64, Инструкция по эксплуатации, Страница: 8 / 44

5
Continuity and insulation resistance functions have the following features:
Live circuit warning Live Circuit warning on the display.
Continuity Null Allows automatic subtraction of test lead
resistance from continuity measurements.
Continuity 2
Ω
Buzzer Buzzer sounds at 2
Ω
or less at Continuity
function. (Switchable on or off)
Auto discharge Electric charges stored in capacitive circuits
are discharged automatically after testing by
releasing the test button.
Insulation Resistance LED LED lights up while making measurements at
Insulation function and alerts that test voltage
is being output.
Loop impedance, PSC/PFC and RCD testing functions have the following
features:
Wiring check Three Wiring symbols indicate if the wiring of
the circuit under test is correct.
Over temperature protection Detects overheating of the internal resistor
(used for LOOP and PSC/PFC tests) and of the
current control MOS FET (used for RCD tests)
displaying a warning symbol and automatically
halting further measurements.
Phase angle selector The test can be selected from either the
positive (
0 ° ) or from the negative ( 180 ° )
halfcycle of voltage. This selector is used in
the RCD mode to obtain the maximum trip time
of an RCD for the test selected.
UL value selector Select UL (limit of contact voltage) 25 V or 50 V.
Where Uc (contact voltage) exceeds UL value
at RCD testing, Uc > UL will be displayed
without starting the measurement.
Features