UNI-T UT582+ Digital RCD Tester with Ramp Test and Auto RCD Function

Measure residual current device trip times and trip currents with precision across six test current settings from 10mA to 650mA. The UNI-T UT582+ supports x0.5, x1, and x5 multipliers, enabling comprehensive verification of AC and selective RCDs. Its ramp test automatically determines the actual tripping current from 0.4In to 1.1In, while the auto RCD test streamlines sequential testing without manual resetting.

Overview

Built for electricians and maintenance professionals, the UT582+ digital RCD tester verifies the safety and compliance of residual current devices in residential, commercial, and industrial installations. It measures trip time from 0ms to 2000ms at x0.5 and x1, and up to 500ms at x5, with selectable phase angles of 0° and 180° to test both positive and negative half-cycles. The large backlit LCD clearly displays results, and the auto power-off function conserves battery life after 15 minutes of inactivity.

What stands out

• Wide RCD test current range: 10mA, 30mA, 100mA, 300mA, 500mA, 650mA
• Ramp test for trip current measurement from 0.4In to 1.1In
• Auto RCD test function for efficient sequential testing
• Selectable phase angle (0° and 180°) for thorough RCD evaluation
• CAT III 300V and CAT II 600V safety ratings for enhanced protection
• Backlit LCD display for clear readings in low-light conditions
• Auto power off after 15 minutes to extend battery life

Technical details

• RCD type: General (AC) and Selective (S)
• Test current multipliers: x0.5, x1, x5
• Trip time measurement range (x0.5, x1): 0ms to 2000ms
• Trip time measurement range (x5): 0ms to 500ms
• Operating voltage range: 195V-253V AC
• Frequency range: 45Hz-65Hz
• Voltage measurement (L-E, L-N): 195V-253V
• Safety rating: CAT III 300V, CAT II 600V
• Display: LCD with backlight
• Power source: 6 x 1.5V AA batteries
• Auto power off: Yes (after 15 minutes)
• Low battery indication: Yes
• Overload indication: Yes
• Standards compliance: IEC 61010-1, IEC 61557-6

Our verdict

The UT582+ combines comprehensive RCD testing capabilities with user-friendly features, making it an essential tool for ensuring electrical safety and compliance.