Digital model with 4 voltage/resistance rating Multifunction - Insulation
resistance: AC voltage and conductor resistance measurement - Insulation test
mode: Comparator, memory, auto-hold and discharge function - All test modes:
Live-line alarm (Exchange AC voltage measurement)
Easy to view, function-free display
Double-action safety mechanism
Display: 3 1/2-digit LCD; 4000 count; backlight-illuminated; logarithmic
bar graph; extension bar graph-no fluctuations, as the display shows the digit
of a reading in the order in which each digit settles.
Comparator function: The MY40 alerts you by turning on the LOW symbol and
sounding the buzzer if the measured value is smaller than reference value. You
can allocate as many as three user-defined reference values to each rating. The
factory-set defaults are 0.1MΩ, 0.2MΩ, and 0.4MΩ.
Memory function: For each rating, you can save as many as 20 measurements
at desired memory address numbers.
Automatic discharge function: The MY40 automatically begins discharge
when you turn off the MEAN switch. You can monitor the state of discharge by
checking the bar graph and make sure discharge is complete by checking that the
segment bar disappear.
High-voltage indicators: The high-voltage symbol and LED lamp come on to
alert you when the MY40 is in insulation testing mode or if any voltage remains
to be discharged.
Live-line alarm: If you apply an AC voltage of approximately 40V or
higher across the input terminals, the MY40 alerts you by blinking the LED lamp
and sounding buzzer.
Overrange input alarm: If the voltage being measured exceeds 600V during
AC voltage measurement, the MY40 alerts you by flashing the Maximum Value
indicator and sounding the buzzer.
Auto-hold function: The tester retains the measured resistance for
approximately 5 seconds after the MEAS switch is turned off.
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