The Digital/Analog Megohmmeter Model 5050 is the latest design in 5000V insulation testers. Features include automatic calculation and presentation of the Dielectric Absorption Ratio (DAR), Polarization Index (PI) and Dielectric Discharge (DD). The True Megohmmeter®Model 5050 displays the test voltage, insulation resistance and the leakage current during the test. Capacitance of the sample and discharge voltage present at the test leads are displayed at the conclusion of the test. This meter is designed with the highest level of built-in safety features. The Model 5050 can be operated from an internal rechargeable battery or from AC line power.
AC/DC Voltage Measurement
Range
1 to 4000V
Accuracy
1 to 99.9V: ±(1% R + 5ct) 100 to 4000V: ±(1% R + 3ct)
Resolution
1 to 99.9V: 0.1V 100 to 999V: 1V 1000 to 4000V: 2V
Frequency Range
1 to 2500V: DC or 15 to 500Hz 2501 to 4000V: DC
Input Impedance
750kΩ or 3MΩ (range dependent)
Insulation Measurement
Test Voltage / Resistance Range
500V: 30kΩ to 2TΩ 1000V: 100kΩ to 4TΩ 2500V: 100kΩ to 10TΩ 5000V: 300kΩ to 10TΩ
Measurement Accuracy
30kΩ to 39.99GΩ: ±(5% R + 3ct) 40.0GΩ 10TΩ: ±(15% R + 10ct)
Variable Voltage
40 to 5,100V
Auto Discharge
Discharge time < 7s/µF from Vtest to 25V @ 5000V
Live Circuit Indicator
Test inhibition if terminal voltage > 3, 10, 20% (selectable by user) of test voltage
