Amprobe AMB-50 Manual De Uso página 13

5. Connect the red and black alligator clip to the circuit to be measured, negative voltage
output from LINE terminal.
6. Choose below insulation resistance measurement mode.
a) Continuous Measurement
• Press TIME button to select continuous measurement mode, there is no timer icon on the
LCD.
• Press and hold TEST button for 1 second to start continuous measurement. Output
insulation resistance testing voltage, TEST button light up,
• Press TEST button to stop the insulation resistance measurement. TEST button lights off,
disappears. The LCD shows the current insulation resistance measurement value.
b) Timed Measurement
• Press TIME button to select timed measurement mode, the LCD displays TIME 1 and
symbols.
• Press and buttons to set the time (00:05~15:00). Within 1 minute, the time increase or
decrease by every 5 seconds. Afterward, the time increase or decrease by every 30 seconds.
• Then press and hold TEST button for 2 second to start timed measurement. TIME 1 and are
displayed and blinked on the LCD on every 0.5 seconds.
• When the set time is reached, the insulation resistance measurement voltage will be
closed and the measurement will be automatically stopped. The LCD displays the insulation
resistance reading.
c) Polarization Index (PI) Measurement
• Press TIME button to select timed measurement mode, the LCD displays TIME 1 and
symbols.
• Press and buttons to set the time (00:05~15:00). Within 1 minute, the time increase or
decrease by every 5 seconds. Afterward, the time increase or decrease by every 30 seconds.
• Press TIME button again. TIME 2, PI and
• Press and buttons to set the time (00:10~15:30). Within 1 minute, the time increment
or decrement by every 10 seconds. Afterward, the time increment or decrement by every 30
seconds.
• Then press and hold TEST button for 2 seconds to start timed measurement.
• TIME 1 and are displayed and blinked on the LCD on every 0.5 seconds before TIME 1 set
time is reached.
• TIME 2 and are displayed and blinked on the LCD on every 0.5 seconds before TIME 2 set
time is reached.
• When the two set time are reached, the insulation resistance measurement. The LCD
displays the polarization index reading.
symbols appear on the LCD.
7
blinks on every 0.5 seconds.