Key Features & Specifications:
• Testing Voltage: 500 VAC
• Resistance Range: 0 to 1,000 megohms (MΩ)
• Display Interface: Colored zone LED lights (Red for Bad/short circuit, Yellow for Caution, Green for Good)
• Power Source: Operates on 2 C batteries
• Design: Impact-resistant handheld enclosure with a built-in soft carrying case and integrated test lead storage
Common Applications:
• HVAC Diagnostics: Checking compressor windings and motor frames for electrical leaks to ground.
• Wiring & Components: Inspecting electrical disconnects, contactors, and thermostat wire integrity.
• Limitations: Best used for quick pass/fail field evaluations rather than precise tracking of gradual winding degradation over time, as it uses zone LEDs rather than a precise digital number output.
Tools
HVAC Compressor tester M500
The Supco M500 Electronic Megohmmeter is a compact, handheld insulation tester designed to measure resistance up to 1,000 megohms at 500 VAC for HVAC compressors, motors and electrical panels.
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