Digital model with 4 voltage/resistance ratings
MultifunctionInsulation resistance, AC voltage and conductor resistance measurementInsulation test mode: Comparator, memory, auto-hold and discharge functionsAll test modes: Live-line alarm (excluding AC voltage measurement), battery check and automatic power-off
Easy-to-view, fluctuation-free display
Double-action safety mechanism
Weight including main unit and batteries only, excluding accessories

Specifications – MY40 Digital Insulation Tester

Width
125 mm

Height
103 mm

Depth
53 mm

Display
3 1/2-digit LCD; 4000 count; backlight-illuminated; logarithmic bar graph; extension bar graph-no fluctuations, as the display shows the digits 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 the reference value. You can allocate as many as three user-defined reference values to each rating. The factory-set defaults are 0.1 M_, 0.2 M_ and 0.4 M_.

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 MEAS 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 40 V or higher across the input terminals, the MY40 alerts you by blinking the LED lamp and sounding the buzzer.

Overrange Input Alarm
If the voltage being measured exceeds 600 V 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.

Batteries
Four AA (R6P) batteries

Weight
420 g

Ambient Temperature/Humidity Ranges
23 ±5 /45-75% RH

Standard Accessories
Batteries (Qty – 4) Earth Probe (98002) (Qty – 1) Line Probe (98001) (Qty – 1) Protection Cover (93013) (Qty – 1) Shoulder Strap (99005) (Qty – 1) User’s manual (Qty – 1)

Tolerance Mentioned Conditions

Max. Deviation from Zero Scale Value
6 digits

Indication of mark on bar graph
Approx. 4000 M_ min. (500 V/1000 V) Approx. 400 M_ min. (125 V/250 V)

No-Load Voltage
130% max. of rated voltage

Rated Measuring Current
1 mA (0 to 20%) when in first effective measuring range

Max. Short-circuit Current
2 mA

Testing Performance

Model Rating Range Option Resolution Measuring Range Tolerance Lower Limit of measured _ Rated Current Central Scale Value

MY40-01
125V/200M_
0.4000
0.1k_
0-0.0199M_
± (5%of rdg+6dgt)
0.125M_
1mA
5M_

4.000
1k_
0.0200-20.00M_*
± (2%of rdg+6dgt)

40.00
10k_
20.01-200.0M_
± 5%of rdg

200.0
100k_

250V/200M_
0.4000
0.1k_
0-0.0499M_
±(5%of rdg+6dgt)
0.25M_
1mA
5M_

4.000
1k_
0.0500-20.00M_*
± (2%of rdg+6dgt)

40.00
10k_
20.01-200.0M_
±5%of rdg

200.0
100k_

500V/2000M_
4.000
1k_
0-0.999M_
± (5%of rdg+6dgt)
0.5M_
1mA
50M_

40.00
10k_
1.000-500M_*
± (2%of rdg+6dgt)

400.0
100k_
501-2000M_
± 5%of rdg

2000
1M_

1000V/2000M_
4.000
1k_
0-1.999M_
± (5%of rdg+6dgt)
2M_
0.5mA
50M_

40.00
10k_
2.000-1000M_*
± (2%of rdg+6dgt)

400.0
100k_
1001-2000M_
± 5%of rdg

2000
1M_

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