Tests insulation resistance up to 1000MΩ with 100V–1000V ranges.
CAT III 600V safety rating with overload protection.
Large LCD display with data hold function.
Perfect for motors, cables, and electrical installations.
Known for its reliability and "Megohmmeter" capabilities, the UT501A provides four selectable test voltages up to 1000V, ensuring compliance with international safety standards for industrial and residential electrical inspections.
Multi-Voltage Output: Features a rotary dial to select between four DC test voltages: 100V, 250V, 500V, and 1000V.
Giga ohm Measurement: Capable of measuring insulation resistance from 0MΩ to 5.5GΩ, providing a clear "pass/fail" diagnostic for high-voltage insulation.
Automatic Discharge: Safely and automatically discharges the residual capacitive voltage from the circuit once the test is complete, preventing accidental electric shocks.
AC Voltage Detection: Includes a dedicated mode to measure AC voltage up to 750V, allowing you to verify that the circuit is de-energized before starting an insulation test.
Intelligent Alerts: Equipped with a Red Warning Light and a buzzer that activates during high-voltage output or when resistance is detected below the safety threshold (<4MΩ)
Backlit LCD & Data Hold: A large, clear display ensures readings are visible in dark utility rooms, with a "Hold" button to freeze measurements for easy recording.
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Specifications
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Range
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UT501A
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Insulation resistance (Ω)
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Test voltages
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100V/250V/500V/1000V
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0%~10%
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100V
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0MΩ~100MΩ
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±(3%+5)
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250V
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0MΩ~99.9MΩ
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±(3%+5)
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100MΩ~5GΩ
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±(5%+5)
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500V
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0MΩ~99.9MΩ
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±(3%+5)
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100MΩ~5GΩ
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±(5%+5)
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1000V
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0MΩ~99.9MΩ
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±(3%+5)
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100MΩ~5GΩ
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±(5%+5)
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Load current
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50V (R=50kΩ) 1mA
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0%~10%
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100V (R=100kΩ) 1mA
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0%~10%
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250V (R=250kΩ) 1mA
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0%~10%
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500V (R=500kΩ) 1mA
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0%~10%
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1000V (R=1MΩ) 1mA
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0%~10%
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Short-circuit current
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<2mA
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AC voltage (V)
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30V~750V
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±(2%+3)
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Features
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Display count
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2000
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Auto range/Low battery indication
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√
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LCD backlight/Light alarm
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√
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Buzzer alarm/High voltage indication
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√
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Over load indication/Auto discharge
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√
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Test voltage secondary display
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√
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10MΩ internal resistance test
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√
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General Characteristics
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Power
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1.5V battery (LR6) x 6
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Display
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70.6mm x 34mm
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Product color
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Red and grey
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Product net weight
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500g
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Product size
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150mm x 100mm x 71mm
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Standard accessories
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Batteries, test leads, alligator clips, gallus
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