Designed for electrical testing by power utilities, industrials, telecommunication companies, and more, this insulation and continuity tester offers a wide range of features. With a convenient back-stand, this tester features three-terminal measurements, which allows the connection of all three test leads for A, B, and E.
Designed for electrical testing by power utilities, industrials, telecommunication companies, and more, this insulation and continuity tester offers a wide range of features. With a convenient back-stand, this tester features three-terminal measurements, which allows the connection of all three test leads for A, B, and E.
Features
Three terminal connection
Three terminal measurement permits the connection of all three test leads for A, B and E (or tip, ring and ground). The measurement pair is selected from the A-B-E (T-R-G) button on the front panel. Selection is confirmed in the display. No disconnection of test leads to measure individual pairs are required.
Alternatively the units can be used as a conventional two terminal instrument.
Insulation resistance testing
The feedback controlled insulation test voltage is now accurate to +2% -0% compared to the original +20%, providing a more accurate test voltage without the risk of over-voltage damage to circuits.
A variable range allows the exact test voltage to be selected from 10 V up to 500 V.
Applications
Insulation | |
Nominal Test Voltage | 50 V, 100 V, 250 V, 500 V |
Accuracy | 50 Volts 10 GΩ ± 2% ± 2 digits ± 4% per GΩ 100 Volts 20 GΩ ± 2% ± 2 digits ± 2% per GΩ 250 Volts 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ 500 Volts 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ |
Display Range | Analog: 1 GΩ full scale |
Resolution | 0.1 kΩ |
Short Circuit/Charge Current | 2 mA + 0 to 50% to EN61557-2 (2007) |
Open Circuit Voltage Insulation | -0% +2% ± 2 V |
Test Current | 1 mA at min. pass value of insulation to a maximum of 2 mA maximum EN61557 Operating range: 0.10 MΩ to 1 GΩ |
Leakage Current | 10% ±3 digits |
Continuity | |
Range | 0.01 Ω to 1 M Ω |
Accuracy | ± 3% ± 2 digits (0 to 100 Ω) ±5% ±2 digits (>100 Ω to 500 kΩ) (>500 kΩ to 1 MΩ unspecified) Service Error: BS EN 61557-4 (2007) - ± 2% 0.1 to 2Ω ± 6.8% |
mA Range | |
DC | 0.0 mA - 500 mA ±5%, ±2 digits |
AC | 0 to 10 mA: unspecified 10 to 500 mA: ±5%, ±2 digits (15 to 400 Hz sinusoidal) |
Voltage | |
Range | AC: 10 mV to 600 V TRMS Sinusoidal (15 to 400 Hz) DC: 10 mV to 600 V |
Range Accuracy | AC: ± 2% ± 2 digits DC: ± 2% ± 2 digits Service Error: BS EN 61557-1 (2007) - ± 2.0% ± 2d 0 V to 300 VAC/DC ± 5.1 |
Frequency Measurement | |
Range | 15 to 400 Hz |
Accuracy | ± 0.5% ± 1 digit |
General Specifications | |
Temperature | Operating: 14 to 131°F (-10 to 55°C) Storage: -13 to 158°F (-25 to 70°C) |
Humidity | 90% RH at 104°F (40°C) |
Maximum Altitude | 6560' (2000 m) |
Dimensions | 9 x 4.25 x 2.32" (2.28 x 108 x 63 mm) |
Weight | 1.76 lbs (800 g) |
Click on a category to view a selection of compatible accessories with the Megger MIT481/2 Insulation and Continuity Tester with result storage, 50/100/250/500 V.
Insulation | |
Nominal Test Voltage | 50 V, 100 V, 250 V, 500 V |
Accuracy | 50 Volts 10 GΩ ± 2% ± 2 digits ± 4% per GΩ 100 Volts 20 GΩ ± 2% ± 2 digits ± 2% per GΩ 250 Volts 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ 500 Volts 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ |
Display Range | Analog: 1 GΩ full scale |
Resolution | 0.1 kΩ |
Short Circuit/Charge Current | 2 mA + 0 to 50% to EN61557-2 (2007) |
Open Circuit Voltage Insulation | -0% +2% ± 2 V |
Test Current | 1 mA at min. pass value of insulation to a maximum of 2 mA maximum EN61557 Operating range: 0.10 MΩ to 1 GΩ |
Leakage Current | 10% ±3 digits |
Continuity | |
Range | 0.01 Ω to 1 M Ω |
Accuracy | ± 3% ± 2 digits (0 to 100 Ω) ±5% ±2 digits (>100 Ω to 500 kΩ) (>500 kΩ to 1 MΩ unspecified) Service Error: BS EN 61557-4 (2007) - ± 2% 0.1 to 2Ω ± 6.8% |
mA Range | |
DC | 0.0 mA - 500 mA ±5%, ±2 digits |
AC | 0 to 10 mA: unspecified 10 to 500 mA: ±5%, ±2 digits (15 to 400 Hz sinusoidal) |
Voltage | |
Range | AC: 10 mV to 600 V TRMS Sinusoidal (15 to 400 Hz) DC: 10 mV to 600 V |
Range Accuracy | AC: ± 2% ± 2 digits DC: ± 2% ± 2 digits Service Error: BS EN 61557-1 (2007) - ± 2.0% ± 2d 0 V to 300 VAC/DC ± 5.1 |
Frequency Measurement | |
Range | 15 to 400 Hz |
Accuracy | ± 0.5% ± 1 digit |
General Specifications | |
Temperature | Operating: 14 to 131°F (-10 to 55°C) Storage: -13 to 158°F (-25 to 70°C) |
Humidity | 90% RH at 104°F (40°C) |
Maximum Altitude | 6560' (2000 m) |
Dimensions | 9 x 4.25 x 2.32" (2.28 x 108 x 63 mm) |
Weight | 1.76 lbs (800 g) |
Click on a category to view a selection of compatible accessories with the Megger MIT481/2 Insulation and Continuity Tester with result storage, 50/100/250/500 V.