The Megohmmeter Model 6505 is a True Megohmmeter® portable instrument housed in a rugged field case that operates on either battery or line power. It performs voltage, insulation, and capacitance measurements. This instrument contributes to the safety of electrical installations and equipment.
Features include automatic calculation and presentation of the Dielectric Absorption Ratio (DAR) and Polarization Index (PI). The Model 6505 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 is displayed at the conclusion of the test.
The Model 6505 is designed with a high level of built-in safety features. This meter incorporates test inhibit capabilities which will not allow test voltages to be generated if a live sample is detected. The test terminals are recessed to ensure operating safety.
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: 10kΩ to 2TΩ 1000V: 10kΩ to 4TΩ 2500V: 10kΩ to 10TΩ 5000V: 10kΩ to 10TΩ
Measurement Accuracy
10kΩ to 399.9GΩ: ±(5% R + 3ct) 400GΩ 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 > 40% of test voltage
