UT593 Multifunction Loop Tester

Uni-T UT593 Multifunction Loop Tester AC Voltage Insulation Resistance Loop/Line Impedance RCD

UT593 is a multifunction digital safety testing instrument, designed with a combination of large-scale integrated analog & digital circuits and the microprocessor chip. It measures RCD, line/loop impedance, continuity, insulation resistance, DC and AC voltage, phase sequence, featuring versatile functionality and high accuracy. The instrument is widely used to measure RCD, insulation and earth connections on electrical equipment, and is an ideal tool for testing, inspection and maintenance.

$849.99 + GST

Out of stock


Uni-T is one of the leading Test and Measurement solutions provider in the world and a prestige test meter brand throughout Asia. They are well known for high quality and affordable test and measurement products.


UT593 Multifunction Loop Tester Features:

  • 9999-count LCD display with analogue bar
  • 250V~1000V DC insulation resistance test
  • 200mA earth-resistance continuity test
  • Loop impedance/Prospective Fault Current (PFC)/Prospective Short Current (PSC) test
  • Lock test
  • CATIII 300V
  • RCD trip time test and the data storage with one key
  • Full/Half wave and count downing (30s) test mode selectable
  • 0°/180° phase angle option to detect the fastest trigger time
  • Trip current test of RCD trip time X2
  • RCD trip trigger current test
  • Phase sequence and missing test
  • AC/DC voltage auto-check and test
  • Connection check with status real-time display
  • White backlight; auto power off
  • Heavy Duty Cary Case
  • 12-month warranty.

UT593 Multifunction Loop Tester Includes:

1 x Carry case, batteries, test leads (red×1, green×1, black×1), special power test lead, remote-control test lead and 12-month warranty.

Delivery and Returns:

Delivery is by courier from Auckland, delivery times may vary. All Auckland orders are delivered the next business day, other main business centres and standard areas are within two-three business days from payment.
All rural areas are subject to normal rural delivery times.
For more details on delivery please feel free to contact us before ordering. Please contact us for Return Authorisation before returning.

Satisfaction Guarantee:

If you are not completely satisfied with your purchase, simply contact us to return it within 30 days in the original packaging and condition supplied for a full refund.

Warranty Information:

Unless specified all products carry a minimum 12-month manufacturer’s return to base warranty. HVACTOOLS will provide full support for this warranty. All products that are found to be faulty within 30 days of purchase will be replaced with brand new products.

UT593 Multifunction Loop Tester Specifications:

SpecificationsRangeBest Accuracy
Model UT593
Insulation resistance (Ω)Output voltage250V/500V/1000V±10%
Short-circuit current<2mA
Low-resistance continuity testRange0.00Ω~199Ω±(2%+5)
Test current0.00~2Ω: >200mA
Line impedance (Ω)Range0.01Ω~2000Ω±(5%+5)
Operating voltage (Frequency)195V~440V (45Hz~65Hz)
Test current20A
PFC test0kA~26kA
Loop impedance (Ω)Range0.01Ω~2000Ω±(5%+5)
Operating voltage (Frequency)195V~253V (45Hz~65Hz)
Test current20A
PFC test0kA~26kA
Non-trip loop impedance (Ω)Range1.00Ω~2000Ω±(5%+5)
Operating voltage (Frequency)195V~253V (45Hz~65Hz)
Test current15mA
PFC test0kA~26kA
RCD testOperating voltage (Frequency)195V~253V (45Hz~65Hz)
Test current10mA/30mA/100mA/300mA/500mA±10%
Trip time×1/2 *I△n  Range: 0ms~2000ms±(5%+5)
×1 *I△n  Range: 0ms~300ms
×1 *I△n  Range: 0ms~500ms (Select count down)
×5 *I△n  Range: 0ms~40ms±(5%+5)
Phase sequence testOperating voltage (Frequency)100V~440V  (45Hz~65Hz)
DisplayPhase sequence: L1→ L2→ L3, forward rotation; L1→ L3→ L2 reverse rotation
Ramp RCD testTest current10mA/30mA/100mA/300mA/500mA±10%
AC voltage (V)Range0V~440V±(5%+2)
Frequency response45Hz~60Hz
Display count9999
Auto power off
Low battery indication
Data storage
LCD backlight
Auto half-wave test
RCD count down test30s
RCD half-wave test
Phase conversion (RCD)0° and 180°
General Characteristics
Power1.5V battery (5#) × 6
LCD size125mm × 37mm
Product colorRed and grey
Product net weight1000g
Product size210mm × 175mm × 90 mm
Standard accessoriesBattery, test leads (red×1, green×1, black×1), special power test lead, remote-control test lead
Standard individual packingGift box, manual, tool box



UT593 Multifunction Loop Tester English Manual