In addition to electrical installations, cable testing, motor testing, automotive work, ESD, panel building, avionics, and other maintenance, the Megger MIT417/2 Cat IV Insulation Tester is a safe, multipurpose insulation tester that can be used for industrial and electrical purposes. The most significant improvement to the Megger MIT417/2's insulation testing capabilities over earlier models is that tests are now more accurate and pose less risk of damage because the maximum over voltage is only 2% instead of 10–20%. Feedback-controlled test voltages of 10V, 25V, 50V, 100V, 250V, 500V, or 1000V are available to the user, making it appropriate for a variety of testing applications, such as specialized applications in telecommunications, aviation, and voltage-sensitive electrical installations. Additionally, the device boasts dielectric absorption and polarisation index (PI). When using the Megger MIT417/2, users can feel confident because of its category IV safety rating up to 600V. Additionally, automatic voltage detection eliminates testing when voltage exceeds a predetermined limit, preventing damage and risk. Furthermore, if insulation resistance surpasses a set threshold, the buzzer alarm will sound. With the Megger MIT417/2, continuity testing is also possible because of the 200mA and 20mA test current options, which offer versatility and help preserve battery life. The resistance range is now continuously variable from 0.01Ω to 1MΩ, which simplifies operation and improves the clarity of results compared to earlier models. If the user adjusts the resistance level above, the buzzer alarm can be configured to sound. Another useful feature of the Megger MIT417/2 is true RMS voltage measurement with frequency readings, which enables the user to measure voltage up to 600V AC/DC while simultaneously conducting an insulation or continuity inspection. The Megger MIT417/2 is a weatherproof, sealed case that complies with industry standard IP54. It is an accurate, multipurpose insulation tester with additional features that can be used in a wide range of situations.
- Insulation
Nominal test voltage
Ten V, twenty-five V, fifty V, hundred V, 250 V, 500 V, and MIT417/2, ten V, twenty-five V, fifty V, hundred V, 250 V, 500 V, and 1000 V
Insulation accuracy
Ten GΩ ± 2% ± two digits ± 4.0% per GΩ at 50 volts
Twenty GΩ ± 2% ± two digits ± 2.0% per GΩ at 100 volts
Two digits plus or minus 0.8% per GΩ at 250 volts
- 50 GΩ ± 2%
A 500-volt system is 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ.
2000 GΩ ± 2% ± 2 digits ± 0.2% per GΩ at 1000 volts
Service Error: BS EN 61557-2 (2007)
± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.5% for 50V and ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% for 100V
In 250V, there is an error of 2.0% to 2.3% in the 100 kΩ to 900 kΩ range and 10.3% in the 500V range.
100 kΩ - 900 kΩ ± 11.5%, 1000V: ± 2.0% ± 2d
Analog display range: 1 GΩ full scale
0.1 kΩ is the resolution.
To EN 61557-2 (2007), the short circuit/charge current is 2 mA +0% -50%.
Insulation against open circuit voltage: -0% + 2% ± 2V
Test current: 1 mA at minimum
- pass insulation value up to 2 mA maximum.
10% ± 3 digits of leakage
Voltage: 3.0% ±3 figures ±0.5% of the voltage that is rated
Control the timer with a 60-second countdown.
Note: Only when using premium silicone leads do the above specifications apply.
Continuity
Measurement of continuity: 0.01 Ω to 999 kΩ (or, on an analog scale, 0 to 1000 kΩ).
± 3% ± 2 digits (0 to 100 Ω) / ± 5% ± 2 digitis (>
- 500 kΩ–1MΩ) is the continuity accuracy.
Error in Service: 2007'
- s BS EN 61557-4 - 2.0% ± 2.0%, 0.1 Ω ± 2.8%
Voltage at open circuit: 5 V ± 1 V
200 mA (–0 mA + 20 mA) of test current (0.01 Ω to 4 Ω)
Polarity: Dual polarity (configurable during setup) or Single polarity (default).
Resistance to lead: Null up to 9.00 Ω
Voltage
Voltage range AC: TRMS sinusoidal, 10 mV to 600 V (15 Hz to 400 Hz)
DC voltage range: 0–600 V
Accurate voltage range in AC: ±2% ±1 digit
Accurate DC voltage range: ±2% ±2 digit
BS EN 61557-1 (2007) - ± 2.0% ± 2d, 0 V - 300 V AC/DC ± 5.1% Service Error
Waveform Undefined range: 15 to 400 Hz – 10 mV
Extra requirements apply to non-sinusoidal waveforms: ±3% ± 2 digits >
- 100 mV to 600 V TRMS ±8% ± 2 digits 10 mV to 100 mV TRMS
Frequency
Range of frequencies measured: 15 Hz - 400 Hz
Accuracy of frequency measurement: ±0.5% ± 1 digit (unspecified range of 100 Hz to 400 Hz).
Power supply
Six IEC LR6 1.5 V cells (AA, MN1500, HP7, AM3 R6HP) are needed for the batteries. You can use six 1.2 V NiMH rechargeable cells for alkaline purposes.
Battery life: 3000 insulation tests at 1000 V into 1 MΩ with a duty cycle of 5 seconds ON and 55 seconds OFF
Measurements: Device dimensions: 228 x 108 x 63 mm
- or, 9.00 in. x 4.25 in. x 2.32 in.
Weight: 1.32 lb (600 g
- MIT400/2)
Weight: 1.75 kg (3.86 lb) (instrument and case combined).
Fuse: Only use one 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse with a minimum 10 kA high breaking capacity. It IS NOT ALLOWED to install glass fuses.
Safety protection: EN 61010-1 (1995) to 600 V phase to earth, Category IV, is met by the instruments. See also
Environmental
Operating range: -10 to +55 °C
- maximum temperature of 40 °C
- relative humidity: 90%.
Temperature range for storage: -25 to +70 °C
Temperature of calibration: +20 °C
Peak elevation: 2000 meters
IP rated at 54
- intended for use in industrial and electrical applications
Ideal for panel building, avionics, automotive applications, electrical installations, cable testing, motor testing, ESD, and other maintenance
Test voltages that are feedback-controlled for insulating tests
Tests at 0% to +2% voltage at 10V, 25V, 50V, 100V, 250V, or 500V
Testing for continuity using test currents of 20 mA and 200 mA and a continuous resistance range
Measurement of true RMS voltage up to 600V AC/DC
Dielectric absorption ratio and polarization index
IP54-certified weatherproof
Overmolded, shock-resistant design
lucid, digital display featuring an analog arc
Live circuit detection to increase security
For continuity and insulation testing, a buzzer alarm
