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MY40 Digital Insulation Tester
Brand: Yokogawa Electric CorporationThe MY40 insulation tester is used to measure the Insulation resistance that represents the state of insulation of electric equipment or circuits; It is one of the important measurement parameters in terms of safety and security.
The MY40 comes with 4 voltage/resistance ratings on an easy-to-view large display, and incorporates a double-action safety mechanism to keep the user from harm.
Features- Digital model with 4 voltage/resistance ratings
- Multifunction
- Insulation resistance, AC voltage and conductor resistance measurement
- Insulation test mode: comparator, memory, auto-hold and discharge functions
- All 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
Specifications
Accuracy
- ± (2 % of Reading + 6-Digits)
- ± (2 % of Reading + 8-Digits)
Ambient Temperature Range
- 23° ± 5° C (73.4° ± 9° F)
Current
- 0.5 mA - Rated Current
- 1 mA (0 to 20 %) when in First Effective Measuring Range - Rated Measuring Current
- 2 mA - Max.
Display
- 3-1/2-Digit LCD
- Backlight-Illuminated
External Magnetic Field Effect
- ≤ ± 1.2 % (Digital) when an External Magnetic Field of 400 A/m DC
- ≤ ± 3 % (Analog) when an External Magnetic Field of 400 A/m DC
Frequency
- 45 to 400 Hz
Function
- Auto Hold
- Automatic Discharge
- Comparator Function
- Conductor Resistance Measurement
- Memory Function
Humidity
- 45 to 75 % Relative Humidity at 23° ± 5° C (73.4° ± 9° F)
- 70 % Relative Humidity, Max.
- 90 % Relative Humidity, Non-Condensing - Operating Humidity Range
Input Impedance
- Approximately 2 megaohms
- Buzzer Sound Resistance: < 40 ohms
Measuring Range
- 0 to 2,000 megaohms
- 0 to 600 V to AC Voltage Measuring Range
- 400 ohms - Conductor Resistance Measurement
Operating Temperature
- 0° to 40° C (32° to 104° F)
Power Requirement
- 4 AA (R6P) Batteries
Rating
- 1,000 V / 2,000 megaohms
- 125 V/200 megaohms
- 250 V / 200 megaohms
- 500 V / 2,000 megaohms
Resistance
- < 40 ohms - Buzzer Sound Resistance
- 0.125 to 2 megaohms - Lower Limit of Measured ohms
- Approximately 4,000 megaohms Min. (500 V / 1,000 V) - Indication of Infinity Mark on Bar Graph
- Approximately 400 megaohms Min. (125 V/250 V) - Indication of Infinity Mark on Bar Graph
Resolution
- 0.1 ohm - Conductor Resistance Measurement
- 0.1 to 1,000 kiloohms
- 1 V - AC Voltage Measurement
Storage Temperature
- -10° to 60° C (14° to 140° F)
Supply Voltage
- 130 %, Max.
Temperature Effect
- A Change in the Reading at an Ambient Temperature of 23° C (73.4° F) Must Not Exceed ± 2 %
Tolerance
- ± (2 % of Reading + 6-Digits)
- ± (5 % of Reading + 6-Digits)
- ± 5 % of Reading
Zero Offset
- 6-Digits, Max.
