Extech PRT200 Non-Contact Phase Sequence Tester

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Extech PRT200 is a Non-Contact Phase Sequence Tester that tests up to 1000VAC with LED and audible indication. This device accurately determines three phase sequence for motor installation and repair. The non-contact voltage detecting technique permits easy connection to insulated conductors using the non-metallic alligator clips, avoiding uncertain and difficult connections to bare high voltage wires.

Authorised Australian distributor

CE   CAT IV   1 Year


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SKU: Extech PRT200 Categories: , Tags: ,

Extech PRT200 Features:

  • 75 to 1000VAC input voltage with 45 to 65Hz frequency range
  • LEDs indicate phase orientation (clockwise or counter-clockwise) and whether each phase is live
  • Beeper sounds intermittently when correct phase is detected and continuously if phase is reversed
  • Durable housing with back cover magnet for attachment to an AC distribution panel for easy measurement
  • Adjustable Hi/Lo LED brightness switch for making measurements in dimly lit areas or sunlight
  • Fully insulated non-mettalic alligator clips with wide jaws that clip onto the insulated wire
  • Low battery warning
  • Complete with three built-in 30″ test leads with large color-coded alligator clips, four AA batteries, and pouch case


Press the Brightness button to increase the light intensity of the LEDs. This can be helpful in observing the LEDs in brightly illuminated areas.

Auto Power Off

In order to extend battery life, the unit will automatically shut off after 5 minutes of inactivity.

Magnet Mounting

Four magnets are located on the rear panel to enable convenient hands free mounting during use.


Extech PRT200 Specifications

Measurement Principle Static induction
Input Voltage 75 to 1000VAC
Frequency Range 45 to 65Hz
Max conductor diameter 33mm (1.3”)
Probe length 86cm (34”)
Auto-Off 5 min. without sequence detection
Low Battery Warning Power LED flashes
Batteries 4 x 1.5V AA
Current consumption 15mA
Operating Temperature & Humidity -10°C to 50°C (14°F to 122°F) Max. 80% R.H.
Storage temperature & Humidity -20°C to 60° (-4°F to 140°F) Max. 80% R.H.
Safety This meter is intended for origin of installation use and protected, against the users, by double insulation per EN61010-1 to Category IV 600V and Category III 1000V; Pollution Degree 2.
Approvals CE



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