What happens when the primaries are overhead?
Although we provide various options to properly test primaries, some installations may be hard to reach. 
The overhead primaries can be tested with the SensorLink® Amp LiteWire and Volt LiteWire along with the interface accessories for the ST-3/XT3.
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How does the ST-3/XT3 work?
ST-3/XT3 : Transformer Rated Wireless Site Tester This unit is a socket type tester, that obtains the reading directly from the secondary of the current and potential transformers. It does not require any external load to perform tests and it is ...
What is the Secondary Burden test?
Secondary Burden test What is the Secondary Burden test? The Secondary Burden test is used to analyze the effect of a resistive burden on the behaviour of the CT. Within the ST-3/XT3 is an array of high accuracy resistors that can be, with the use of ...
How do I update the XT Series tester firmware?
To benefit from all the latest features and bug fixes, Probewell Lab suggests that firmware updates on XT Series testers be performed periodically. The XT Series 2.0.4 & WT Series 2.1.0 Firmware is always available. Watch Firmware Update Tutorial ...
Can I use it without accessories? How many accessories can I use it with?
Yes, it can work without any accessories, depending on the test you wish to perform on the site. The only test that it is not available without accessories would be the primary/secondary analysis (Ratio Test). The accessories available are 3 phases ...
What is Demand test?
Demand test Ho does it work? The Demand test is used to test meters that have a demand register, (no accessories are needed). The meter must first be configured to be in kW demand test mode (check meter manual for device specific procedure). The ...