UNI-T UT595 Multifunction Tester – unboxed

The UT 595 is a universal measuring and testing instrument for carrying out inspections of electrical appliances. It enables the automated testing of the tripping time of residual current devices, the measurement of leakage currents, measuring earth loop impedance and earth continuity, measuring insulation resistance, measuring the frequency of AC voltage, and measuring DC and AC voltages, as well as phase sequence in three-phase distribution systems.
The instrument features a new design, with a large multifunctional display featuring a 50-division bar graph. It has a robust casing and new analogue, digital and microprocessor circuits.
This instrument has been designed, manufactured and tested in accordance with the IEC 61010 safety standard (Safety requirements for electrical equipment) in the CAT III 300 V overvoltage category. It fully complies with the ČSN EN 61557 standard for measuring insulation and contact resistance. The UT595 is the ideal tool for the maintenance, testing and inspection of protective components in electrical equipment for every electrician and inspection technician.


Product specifications: - maximum display reading: 9999, analogue bar graph with 50 divisions - backlit LCD display dimensions: 125 x 37 mm - Display shows: operating modes, values, units and symbols - Function selection: 15-position rotary switch
- Range switching: automatic - Measurement of RCD trip times: 10 mA, 30 mA, 100 mA, 300 mA and 500 mA types
- Option to change the phase angle to 0°/180° to detect the fastest trip time of the residual current devices - Selectable half-wave / full-wave AC voltage test mode
- Automatic RCD tests: sequential switching of trip currents, smooth ramp-up of the trip current until the RCD trips - Storage of measured values in memory
- Loop impedance / fault current (PFC) / short-circuit current (PSC) testing: in the range 0.05 ? to 2000 ? - Earth continuity measurement: in the range 0.01 ? to 200 ? - Insulation resistance measurement: 0.05 M? to 1 M? at test voltages of 250 V/500 V/1000 V
- AC voltage frequency measurement: in the range 20 Hz to 100 Hz - AC and DC voltage measurement: 0 V to 440 V, automatic AC/DC/polarity detection - Phase sequence measurement: indication of phase sequence and direction of rotation - Power supply: 6 x 1.5V AA alkaline batteries - Calibration certificate: must be ordered separately - Automatic power-off - Key lock - An indispensable tool for every maintenance engineer


Technical specifications: - RCD measurement measuring current selection I: 10mA / 30mA / 100mA / 300mA / 500mA
Measuring voltage: 220 V ±10%, frequency 45 Hz to 65 Hz Measuring current accuracy at 220 V AC: ± (10% + 2)
Automatic circuit breaker test with current I: 50%, 100%, 200%, 500% of the trip current Time measurement range at current 1*I, ?n: 0 to 2000 ms Time measurement range at 1*I current, ?n: 0 to 500 ms (with countdown function) Time measurement range at 1*I current, ?n: 0 to 300 ms Time measurement range at 2*I, ?n: 0 to 200 ms (with subtraction function) Time measurement range at 2*I, ?n: 0 to 150 ms Time measurement range at current 5*I, ?n: 0 to 40 ms Option to change phase angle: 0°/180°
Time measurement accuracy: ±(5%+5) - Loop impedance / fault current (PFC) / short-circuit current (PSC) measurement

Operating voltage: 220 V ± 10 per cent / 195 V to 440 V / 45 Hz to 65 Hz Measuring current and time: 20 A / 20 ms Measuring ranges: 0.05 ? to 1.99 ?; 2.0 ? to 19.9 ?; 20 ? to 2000 ? Lowest resolution: 0.01? short-circuit current: 0 kA to 26 kA accuracy: ± (5% + 5)


- Earth continuity testing Rated test voltage: approx. 5 V Test current: more than 200 mA Measuring range: 0.01 ? to 200 ? Accuracy within the range 0.01 ? to 200 ?: ± (2% + 5)


- Insulation resistance measurement Nominal open-circuit test voltage: DC 250 V ±10 per cent or 500 V ±10 per cent or 1,000 V ±10 per cent Measuring range: 0.05 to 250 M?, or 0.05 to 500 M?, or 0.05 to 1000 M?
Rated measuring current at a load of 250 k?, 500 k? or 1 M?: 0.9 mA to 1.1 mA Short-circuit current: <1.8 mA Measurement accuracy in the range 0.05 M? to 1000 M?: ±(5% + 5)