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Summary of Contents for Huazheng HZTTR80A
- Page 1 HZTTR80A Transformer Turns Ratio Tester Huazheng Electric Manufacturing (Baoding) Co., Ltd...
- Page 2 (0312 ) 6775656 to tell you to serve you at all times- Baoding Huazheng Electric Manufacturing Co., Ltd., our company will definitely make you satisfied !
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Page 3: Table Of Contents
Contents I. Overview ..........................1 II. Precautions ........................3 III. Technical Parameters ......................5 IV. Test Preparation .........................5 V. Operation ...........................8 VI. Troubleshooting and Maintenance ..................20 VII. Packing list ........................21... -
Page 4: Overview
Overview 1.1 Product Overview The HZTTR80A transformer ratio test device is a fully automatic tester. It integrates the testing functions of turn ratio, voltage ratio, vector relationship, winding connection, polarity, tap position, and excitation current. This tester is a lightweight and portable... - Page 5 1.3 Panel Description Grounding Terminal: Before conducting any tests, please safely ground the grounding terminal to avoid the risk of electric shock. Power Socket and Switch: The power input port for the entire device, used to connect or disconnect the test power supply. High-voltage side connection terminals: There are three-color (yellow, green, red, and black, with the black one being counted as part of the color indication context here for understanding the connection mapping, though technically it's a single additional...
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Page 6: Precautions
Operators must follow the instructions in this manual and adhere to the precautions during the use of the tester. If the device malfunctions, it should be immediately powered off and returned to Huazheng for repair. 2.2 Labeling Warning: Please refer to the user manual. - Page 7 ▪ Before conducting any tests, please ensure the grounding post is safely grounded to prevent electric shock hazards. ▪ Before testing, carefully check the wiring to ensure there are no reverse connections, short circuits, or incorrect connections. ▪ For measurements of Y/yn, YN/d, D/yn, D/zn, Y/zn, and autotransformers, there is no need to connect the neutral points.
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Page 8: Technical Parameters
III. Technical Parameters Test Range: Transformation Ratio -- 0.9 to 10000, Current -- 0 to 2000mA, Angle -- 0 to 360° Ratio Accuracy: 5V Range: ±(0.1% + 2 digits) (0.9-50), ±(0.2% + 2 digits) (51-200), ±(0.5% + 2 digits) (201-600) 80V Range: ±(0.1% + 2 digits) (0.9-500), ±(0.2% + 2 digits) (501-2000), ±(0.5% + 2 digits) (2001-10000) Current Accuracy: ±(1% of reading + 0.5 mA) - Page 9 4.2 Wiring ------------------------------------------------------------------------------------------------------------------------ Connections should be made in the following order, and the reverse order should be followed for disconnection after testing. Ensure that the switch is in the "O" (OFF) position, disconnect the power cord first, then the ground wire, and finally the test leads.
- Page 10 Connecting Power Supply Ensure that the input power supply meets the requirements, make sure the switch is in the "O" (OFF) position, and connect the power cord to the tester. 4.3 Android APP Software The testing instrument can be controlled via the touchscreen or operated from an Android mobile phone that has been connected and on which the APP software has been installed.
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Page 11: Operation
Click on the button to jump to the device scanning interface, as shown below: Click on the device name you want to connect to in the list. Alternatively, click on the icon in the top-right corner to jump to the QR code scanning page, and scan the QR code on the testing instrument to establish a connection. - Page 12 Buttons Button Description Button Description Confirm Home Accept changes Return to the main interface Back Cancel Return to the previous Discard changes interface Input Keyboard This keyboard can be accessed in the measurement parameter setting interface and the time setting interface for data entry.
- Page 13 This keyboard can be accessed in the measurement parameter setting interface for entering the ID number of the test specimen. 5.3 Main Interface The main interface appears after the tester is started. All main functions can be initiated from the main interface. Button functions are as follows: Button Description...
- Page 14 5.4 System Settings Interface To switch from English to Chinese, simply click the button; to switch from Chinese to English, click the button. Other button functions are as follows: Button Description Backlight settings Time settings Manufacturer settings...
- Page 15 5.4.1 Backlight Settings You can slide slider to set the backlight value, or click to set fixed backlight values. The backlight value can be adjusted from 25% to 100%. 5.4.2 Time Settings You can click the four buttons to set the time, or click the edit area to access the input keyboard for setting the time.
- Page 16 1 - 31 Hour 0 - 23 Minute 0 - 59 5.5 Measurement Parameter Setting Interface Before measurement, the correct parameters must be set. 5.5.1 Parameters and Buttons Options Description Set the connection mode for the high-voltage side; for detailed High-voltage selection settings, please refer to section 5.5.2.
- Page 17 transformer nameplate. Please enter the rated low-voltage value from the transformer Rated nameplate correctly. Incorrect input will affect the error calculation. low-voltage For transformers with taps on the low-voltage side, please enter the rated low-voltage value corresponding to the rated tap on the transformer nameplate.
- Page 18 5.5.2 High-Voltage Connection Setting The option is for setting an unknown connection method. Selecting this option allows for three-phase blind measurement functionality. 5.5.3 Low-Voltage Connection Setting The option is for setting an unknown connection method.
- Page 19 5.5.4 Connection Group Setting 5.6 Measurement Interface 5.6.1 Test Failure There are many reasons for test failure, including but not limited to: • Improper test lead connections • Excessive current consumption If the test cannot continue due to safety reasons or issues with test lead connections, a "Test Failure"...
- Page 20 5.6.2 Test Success When the test is successfully completed, the following interface will be displayed. The title contains useful information about the test settings and how the transformation ratio test was performed. Information Description Test Specimen Number The test specimen number is displayed above the title. Indicates whether the currently displayed transformation ratio Transformation Ratio data is a voltage ratio or a turn ratio.
- Page 21 Connection/Group successful test, it displays the vector relationship and group Number number determined by the tester's calculations and judgments. The display is related to the settings for group number, high-voltage connection, low-voltage connection, and non-30° phase vector. Test Voltage The test voltage selected for this measurement. The theoretical transformation ratio calculated based on the Theoretical settings for rated high-voltage, rated low-voltage, and rated tap...
- Page 22 Remeasure Adjust to the next tap position and continue the measurement. ---------------------------------------------------------------------------------------------------------------------- During the measurement process of the tester, the input/output terminals, test posts, etc., may be live. Do not touch exposed contacts and parts to avoid the risk of electric shock. Please follow the instructions carefully! ------------------------------------------------------------------------------------------------------------------------ 5.7 Data Browsing Interface The data browsing interface is almost identical to the measurement interface.
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Page 23: Troubleshooting And Maintenance
Previous Set Switch to the display of the previous set of measurement result data. Next Set Switch to the display of the next set of measurement result data. Export Measurement Results Insert a USB flash drive. When the USB drive icon appears next to the time at the top of the interface, you can export the measurement result data to the USB drive in the form of a text file. -
Page 24: Packing List
After connecting the wires, select any three-phase connection method for testing. If the measured value is approximately 1.0000, the instrument is functioning normally; otherwise, there is an issue with the instrument. If no shorting wire is available, you can also short-circuit the high-voltage side yellow, green, and red wire clamps to the corresponding low-voltage side yellow, green, and red wire clamps.
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