Ground Resistance Tester Models 3711 and 3731
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Case Material: Lexan
®
920A (UL94V2) or equivalent
Jaw Cover Material:
Lexan
®
with 10% fiberglass charge (UL94V0) or equivalent
LCD Cover Material: Clear Lexan
®
(UL94V1) or equivalent
Color: Gray body, red jaws
Jaw Window Diameter: 1.25” (32mm)
Jaw Opening: 1.38” (35mm)
Operating Temperature: 14° to 131°F (-10° to 55°C)
Operating Humidity:
10 to 90% RH @ 14° to 104°F (-10° to 40°C), 75% RH @ 131°F (55°C)
Storage Temperature: -22° to 158°F (-30° to 70°C)
Altitude: Operational - 2000m; Storage - 12000m
Power Supply: 9V Alkaline (IEC 6LF22 or NEDA 1604A)
Battery Life: Typical: 8 hours or approx. 1000 measurements of 30 s
LCD: 3-3/4 digit, 1.73 x 1.10” (44 x 28mm)
US Design Patent: No. 362,639
Safety Specifications
EN 61010-1 (Class 2), Double Insulation
Working Voltage: 150V, Cat. III - Pollution Degree 2
300V, Cat. II - Pollution Degree 2
Environmental: IP30 (Protection Index) EN 60529 Ed. 92
IK04, EN 50102 Ed. 95
Vibration Test: IEC 68-2-6
Shock Test: IEC 68-2-27
Drop Test (1m): IEC 68-2-32
Max A Overload: 100A continuous, 200A (< 5s) 50/60Hz
OL displayed above 29.99Arms
Electromagnetic Compatibility:
EN 61326-1+A1 (industrial environment)
EM Field: IEC 61000-4-3, criteria B
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