UNI-T UT593 installation Tester
The UNI-T UT593 is a sophisticated digital safety testing instrument engineered for professional electricians. Its fundamental design is based on a combination of large-scale integrated analog and digital circuits, controlled by a dedicated microprocessor chip. This advanced technological foundation is key to the instrument’s high accuracy, stable performance, and versatile functionality, making it a reliable tool for critical electrical safety measurements.
This tester is designed for ease of use, integrating a wide range of essential electrical tests into a single, portable unit. It features a clear 9999-count LCD display with an analog bar graph for easy reading of measurements. Operation is streamlined through a rotary switch for function selection and dedicated soft keys (F1-F4) that provide context-specific controls, such as activating a test lock for continuous measurement, zeroing test leads, or turning on the white backlight for work in low-light conditions.
The UT593 prioritizes user safety and intuitive interaction. The interface provides clear status indicators and will automatically inhibit testing if it detects a live voltage, preventing unsafe operations. Its construction complies with the IEC61010 safety standard for Category III installations up to 300V, ensuring it is built to withstand the transient voltages found in typical electrical distribution systems, thereby protecting the user during testing.
Features:
- 9999-count LCD display with analogue bar graph.
- Insulation resistance testing with selectable voltages (250V/500V/1000V).
- High-current (200mA) earth-bond continuity testing.
- Loop impedance and Prospective Fault Current (PFC) testing.
- RCD (Residual-Current Device) trip time testing with one-key data storage.
- Selectable RCD test modes (Full/Half wave and countdown).
- Phase angle selection (0° or 180°) to find the fastest RCD trip time.
- RCD trip current (ramp) test.
- Phase sequence and missing phase detection.
- Automatic AC/DC voltage detection and measurement.
- Connection check with real-time status display.
- White backlight and auto power-off function.
Specifications:
| Function | Range / Details | Accuracy / Notes |
|---|---|---|
| Insulation Resistance: | 0.05MΩ – 1000MΩ (at 1000V) | ±(a% of reading + b digits) |
| Continuity Test: | 0.000Ω – 2000Ω | ±(a% of reading + b digits) |
| Test Current: | Up to 200mA | – |
| Loop Impedance: | 0.010Ω – 2000Ω | ±(a% of reading + b digits) |
| RCD Test: | Trip Time & Trip Current | ±(a% of reading + b digits) |
| RCD Trip Current: | 10mA, 30mA, 100mA, 300mA, 500mA | – |
| AC/DC Voltage: | 0V – 440V | ±(a% of reading + b digits) |
| Phase Sequence Test: | 100V – 440V (45Hz-65Hz) | Detects forward/reverse rotation & open phase |
| Safety Rating: | CAT III 300V | According to IEC61010 |
| Power Supply: | 8 x 1.5V AA batteries | – |
Applications:
- Electrical Equipment Safety Verification.
- Installation and Commissioning Testing.
- Routine Inspection and Maintenance.
- Residual-Current Device (RCD) Performance Validation.
- Circuit Integrity and Continuity Checks.
Package Contents:
- 1x Test leads
- 8x Alkaline battery, 1.5V (AA)
- 1x Operating manual
- 1x Carrying bag
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