Kewtech KT72

23
Measuring
method
Check earth connections
and press start again
(*5)
(*4)
Lights up in red
No
Yes
Yes
Yes
(1). Preliminary measurement
No
(4). Short test between L and N.
Lights up
in green
Value of (2) and (3) will be alternately displayed on LCD.
No
Re-start
Start
Extension Leads Test Flowchart
Lights up in red
Lights up
in green
No
Re-start
(2). Protective conductor resistance test.
Re-start
(*6)
(5). Polarity test between L-L and N-N.
No
RPE≦20Ω?
RPE≦0.1Ω?
(0.1Ω<RPE<0.3Ω?)
Lights up in green or
if the resistance
is:between >0.1 and
< 0.3Ω it lights orange
(3). Insulation resistance test between L/N and PE.
Yes
PASS
Lights up in red
Lights up in red
“no”→“Con” is displayed
alternately on the LCD.
Lights up in red
“no” →“Con”→“value” will
be repeated on the LCD.
“no”→“LnE”→“value”will
be repeated on the LCD.
“no”→“Sht” is displayed
alternately on the LCD.
“no”→“L-L”→“value”
or “no” →“n-n” →“value”
will be repeated on the LCD
.
LnE
≧ 1MΩ?
L-N
≧ 100kΩ?
L-L & N-N≦10Ω?
Polarity
Polarity