The Clamp-on Ground Resistance Tester Model 3711 measures ground rod and small grid resistance through any season, without the use of auxiliary ground rods. Clamp-on Ground Resistance Testers are used in multi-grounded systems without disconnecting the ground under test. The Model 3711 simply clamps around the ground conductor or rod and measures the resistance to ground. By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.

Features
• Simple and fast clamp-on operation - no leads, no auxiliary rods or spacing requirements. No need to disconnect neutral service
• Direct reading of ground resistance from 0.01Ω to 1200W
• Direct reading of continuity and ground loop resistance
• Direct reading of ground leakage or phase current from 1mA to 30Arms
• Jaw design with large 1.25" (32mm) window - accommodates up to 1000MCM cables
• Auto-off for power management
• CE Mark and UL approved
• Rugged Lexan head and body construction resists breakage
• Patented design

Ground Resistance
Auto-Ranging 0.01Ω to 1200Ω	Measurement Range	Resolution	Accuracy (% of Reading)
	0.1 to 1.0Ω	0.01Ω	+ (2% + 0.02Ω)
	1.0 to 50.00Ω	0.1Ω	+ (1.5% + 0.1Ω)
	50.0 to 100.0Ω	0.5Ω	+ (2% + 0.5Ω)
	100 to 200Ω	1Ω	+ (3% + 1Ω)
	200 to 400Ω	5Ω	+ (6% + 5Ω)
	400 to 600Ω	10Ω	+ (10% + 10Ω)
	600 to 1200Ω	50Ω	Not Rated
Current Measurement
Auto-Ranging 1mA to 30.00Arms	1 to 299mA	1mA	+ (2.5% + 2mA)
	0.300A to 2.999A	0.001A	+ (2.5% + 2mA)
	3.00A to 29.99A	0.01A	+ (2.5% + 20mA)
General
Resistance Measurement Frequency	2403Hz
Current Measurement Frequency	47 to 800 Hz
Current Overload	OL displayed above 29.99Arms