INTRODUCING THE ST-3/XT3
The First Socket Type Transformer-Rated Site Tester
Speed up your site testing
As the first socket-type site tester, the XT3 offers an enhanced user experience while quickly offering complete testing capabilities.
Power Quality (PQ)
Total Harmonic Distortion
CT & PT Ratios
How Does It Work?
Embedded within the ST-3/XT3, is a high performance multiphase energy metering circuitry.
This allows a full RMS and line cycle measurement of both secondary (at the meter base)
and primary (with accessories) currents and voltages.
The ST3/XT3 offers elaborate test modes that can leverage such measurements to assess the Power Quality
on the secondary side or perform complete transformer ratio analysis
Lightning Quick Setup
Fast twist & lock tab setup with minimal wiring for quick and safe operation.
Setting-up your test has never been easier; you’ll be testing in no time.
Easily configurable with twist & lock removable tabs, you will be able to test sites with any of these CT rated meter forms:
Single-Phase: 3S and 4S
Polyphase: 5S, 6S, 8S, 9S, 35S and 45S
Fitzall™: CT Rated
Export and share test results as a PDF or CSV file.
Click the links below to download a sample file:
Several other tests are also available, get a sample upon request.
What if I test in remote areas?
Combined with its high portability and lightning quick operation, it is the ideal companion for testing in remote areas.
|Single-Phase||3S and 4S|
|Polyphase||5S*, 6S, 8S, 9S, 35S* and 45S*
*Adapter required (included)
|Operating systems||IOS®, Android®, Windows®|
|Voltage||100 – 600VAC|
|Working Voltage||100 – 480VAC +/- 10%|
|Bypass Circuit||20A (max for CT Rated)|
|Circuit Breakers||2 x 1A (press-to-reset mechanism)|
|Wireless||802.11b/g Access Point Only|
|I/O Port||Full duplex for wired updates only|
|MULTIFUNCTION MEASUREMENTS ACCURACY|
|RMS Current||±0.05% maximum|
|RMS Voltage||±0.05% maximum|
|Operation Temperature||-4° to 140°F (-20° to 60°C)|
|Storage Temperature||-4° to 140°F (-20° to 60°C)|
|Humidity||0% to 95% (non condensing)|
|Test Socket (Diam. x L)||6.5” x 7.4”|
|Test Socket||4.5 lb|
|Parts and Labor||2-years limited***|
|Power Quality Analysis||Vrms, Irms, Frequency|
|Active Power (W)|
|Reactive Power (VAR)|
|Apparent Power (VA)|
|Vrms THD, Irms THD|
|Current Phase Angle|
|Voltage Phase Angle|
|Phase Sequence Detection|
|Waveform Viewer||80ms of data per channel|
|CT Burden||0.1, 0.2, 0.5, 1.0, 2.0, 4.0, 8.0|
|SUPPORTED TEST (WITH ACCESSORIES)|
|CT primary to secondary ratio|
|CT primary –˃ secondary phase|
|PT primary to secondary ratio|
|PT primary –˃ secondary phase|
|Deluxe Double Carrying bag||Update cable|
|User’s manual||5 Removable Twist Tabs Plus 5 spares|
|Quick Start Guide||Calibration report|
|5S, 35S, 45S adapter|