Related Manuals for UNI-T UT225B
Summary of Contents for UNI-T UT225B
- Page 1 UT225B UT225B UT225B High Voltage Transformer Turns Ratio Tester P/N:110401111909X ...
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Page 2: Table Of Contents
Content Safety Information ......................1 Introduction ......................... 4 III. Electrical Symbols ....................... 4 Technical Specifications ..................... 4 External Structure ....................... 4 Operating Instructions ......................4 1. Power On/Off the Primary High-Voltage Clamp Sensor ..........2 2. Power On/Off the Tester ..................... 2 3. -
Page 3: Safety Information
It is designed and manufactured to test primary current, secondary current and turns ratio of transformer below 35kV, and identify phase type and polarity. UT225B consists of primary clamp sensor (high-voltage clamp sensor), secondary clamp sensor, tester, high-voltage insulation stick, monitor software, communication line, etc. -
Page 4: Electrical Symbols
The monitor software can indicate maximum, minimum and average values, and have multiple functions including dynamic display, real-time monitoring, alarming threshold setting, alarming indication, data viewing/saving/printing, etc. UT225B has the same functions as High/Low Clamp Meter, Aerial Current Tester, and other products. III. Electrical Symbols... - Page 5 Range switching Fully automatic Sampling rate 3 times per second Store 3000 groups of data. Press “ ” to hold data and perform Data storage automatic numbering and data storage (data loss does not occur if power is down or battery is replaced). Press “...
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Page 6: External Structure
V. External Structure 1. Primary clamp sensor 7. MEN button and arrow buttons 2. Antenna 8. Input port for secondary clamp sensor 3. Power indicator 9. USB port 4. Power button 10. Output plug for secondary clamp sensor 5. Connector of insulation stick 11. -
Page 7: Testing Of High-Voltage Current And Overhead Current
of the low-voltage end. If signal is detected for both primary and secondary circuits, the tester simultaneously shows the change by converting the secondary current at 5A, and indicates the phase type. The symbol “No signal” appears if the tester fails to connect with the high-voltage clamp sensor normally. - Page 8 testing and sends the testing result to the tester. After the tester is powered on, it enters receiving state automatically. If the tester receives signal transmitted by the high-voltage clamp sensor, it displays the current of primary circuit at high-voltage end in real time; if not, it displays “No signal” for primary current.
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Page 9: Secondary Low-Voltage Current Testing
4. Secondary Low-Voltage Current Testing Live line! Danger! The operation must be performed by authorized trained personnel. The operator must stringently follow the safety regulations, otherwise it may present a risk of electric shock, which can cause personal injury or product damage. Do not use low-voltage clamp sensor to test circuit over 600V or 5A, otherwise it may present a risk of electric shock, which can cause personal injury or product damage. - Page 10 （150.5-150）/150*100%=0.3%...
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Page 11: Data Hold/Storage
For example: The turns ratio of measured current transformer is 150/5A, and the ratio error (error) is 3%. The set turns ratio shall be consistent with the value specified by the nameplate at the current transformer. If the actual test error is over the set error, the symbol “OL” appears on bottom right of the LCD. On-site wire connection: 6. -
Page 12: Data Viewing/Deletion
data is unlocked, the tester returns to testing mode, and the symbol “HOLD” disappears. The tester can store maximum 3000 groups of data. 7. Data Viewing/Deletion Press “ ” to view data and display the stored data of Group No. 0001. Press “ ” and “ ” to move the cursor, press “MEM”... -
Page 13: Packing List
VIII. Packing List Meter 1 pc Primary high-voltage clamp sensor 1 pc Secondary low-voltage clamp sensor 1 pc Insulation stick (1 m/pc) 5 pc USB cable 1 pc Carrying bag 1 pc AAA alkaline dry battery 8 pc User manual 1 pc The content of this user manual cannot be used as a reason for using the product for special purposes.