The Megohmmeter Model 6503 is a compact, self-contained, hand-cranked True Megohmmeter®. This practical and dependable instrument is designed for a broad range of plant and field service applications, such as acceptance testing and preventive maintenance of wiring, cables, switchgear and motors. The easy hand-cranked operation provides a steady, DC voltage output across the entire range for consistently reliable readings. The Model 6503 has three test voltages for insulation resistance testing: 250V, 500V and 1000V. Test voltages are generated in full across the entire measurement range.
AC Voltage Measurement
Range
0 to 600VAC
Accuracy
±3% of Scale
Frequency Range
45 to 450Hz
Input Impedance
100kΩ (approx)
Insulation Measurement
Test Voltage / Resistance Range
250V: 1 to 11MΩ; 11 to 500MΩ 500V: 1 to 11MΩ; 11 to 500MΩ 1000V: 10 to 110MΩ; 110 to 5000MΩ
Measurement Accuracy
2.5% of Scale Length
Short Circuit Current
5mA (max)
Auto Discharge
8s/µF
Features
Power Supply
Hand-cranked, test voltage reached at approx 140rpm
Dimensions
4.7 x 4.4 x 5.3” (120 x 111 x 135mm) with lid
Weight
2.5 lb (1.1kg)
Operating Temperature
14° to +113°F (-10° to +45°C); 75% RH
Storage Temperature
-4° to +176°F (-20° to +80°C); 90%
IP Rating
IP 54 with lid; IP 52 without lid
Safety Compliance
EN 61010-1, 600V CAT II, 300V CAT III, Pollution Degree 2
