ETCR4500 Wireless PT Secondary Voltage-Drop/Load Tester is used for on-site online testing of the secondary circuit line voltage drop of the electric energy metering device potential transformer (hereinafter referred to as PT) , as well as the PT phase detection, PT load test, CT load test, three-phase voltammeter, and harmonic analysis, etc. The instrument consists of 2 handheld terminals, 6 current clamp clips, 2 sets of voltage test lines, etc. The two handheld terminals have wireless communication and GPS communication, and can be set as masters or slaves for each other to achieve synchronous measurement of current,voltage,phase and so on parameters between different locations in the substation.

ETCR4500 Wireless PT Secondary Voltage-Drop/Load Tester adopts 5-inch touch color screen, perfect and strong function, which can automatic measurement, easy and fast operation, accurate and reliable, the instrument adopts large-capacity rechargeable lithium battery, and with data storage, data access, automatic shutdown, USB Interface data upload and export functions etc., the instrument has Bluetooth communication that supports Android system, after installing the APP, can make the test or view the test record on mobile phone. This instrument adopts a special metering chip, which has very high measurement accuracy for electrical parameters, can display the changes of the measured parameters in real time, and has the function of saving data. The instrument is simple to operate, easy to use, fast, stable and reliable in measurement. It is a new generation instrument for electric energy measurement and relay protection in power system, and it is a new generation instrument for on-site detection of secondary circuits. It is also widely used in electrical equipment manufacturing, petrochemical industry, iron and steel metallurgy, railway electrification, scientific research and teaching departments.

ETCR4500 Wireless PT Secondary Voltage-Drop/Load Tester has the following functions and features:
1. The single tester can be used as a three-phase voltammeter, load tester, and harmonic analysis;
2. The double testers can wireless synchronization test current, voltage, phase and other parameters at different positions in the substation; it is used to test the PT secondary voltage drop, and calculate the voltage drop error and measurement error of the PT. And also can be used for PT wireless phase detecting.
3. When four testers are used at the same time, one of the unit can be set as the master tester, and the other three testers can be set as the slave, which is especially suitable for multi-point synchronous testing, and is flexible and convenient to use.
4. The tester adopts GPS satellite timing synchronization technology to ensure the accuracy of PT secondary voltage drop synchronous measurement and PT phase detection.
5. The measurement personnel only need to perform wiring operations, the testers will automatically measures, and the data is updated in real time, which is convenient for on-site analysis.
6. The tester adopts complete isolation technology to avoid the occurrence of safety accidents.
7. Click the "Help" button, the operation guide will pop up, no need to consult the instruction manual.
8. The tester equip with Bluetooth communication. After installing the APP, which can make the test or view the test record on the mobile phone.