Huazheng HZBB-10B-1 User manual

Huazheng Electric Manufacturing Co.,Ltd
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HZBB-10B-I INTELLIGENT
TRANSFORMER TURN RATIO TESTER
USER MANUAL
Huazheng Electric Manufacturing(Baoding) Co,.Ltd

Huazheng Electric Manufacturing Co.,Ltd
Preface
Dear Respected Users,
Thank you for choosing HZBB-10B-I intelligent tester of
Transformer Ratio and Connection Groups. This detailed operating
manual provides you with product introduction, usage instruction,
performance, safety precautions, and other relevant information for
your convenience.
Before using, be sure to read this manual carefully and operate
and maintain the tester in accordance with this manual, which will
help you to use the product better and extend the life of the tester.
We work in a scientific and rigorous manner while writing this
manual and believe that the information provided here is correct and
reliable. However, if you find any mistake in the manual, please be
sure to inform us and we will correct it as soon as possible.
Our company reserves the right to improve the function of the
tester. If inconsistency with the manual exists in course of
operation, please take the actual function of the tester as standard.
We hope that this tester will make your work easier and enjoyable,
so that you can enjoy the relaxed pleasure in automatic operation.
You are welcome to recommend the tester to your friends if you
are satisfied with our product. Please contact us if you have any
comments or suggestions, the company will make every effort to give
you a satisfactory answer. Thank you again for your support!

Huazheng Electric Manufacturing Co.,Ltd
Contents
I. Overview.................................................................................. 1
II. Main Functions and Characters..............................................3
III. Main Technical Specifications............................................... 4
IV. Key Set....................................................................................4
V. Directions................................................................................5
VI. After-sale Service................................................................ 10

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I. Overview
HZBB-10B-I intelligent tester of Transformer Ratio and
Connection Groups adopts popular ARM processor, 168M frequency, 128M
memory available to be extended to 4G memory card. The LCD screen
adopts 7-inch high-definition color touch screen, combined with
emwin display, making the tester interface simple and user-friendly
in full touch screen and non-keyboard operation. The tester supports
database and can be exported from the USB drive or through the data
cable to the background computer.
Elaborate and compact design, unique thinking, makes the tester
superior and powerful with small size and light weight. The tester
uses a programmable signal source, can output single-phase, two-
phase or three-phase standard Sine signal or high-frequency Sine
signal, with adjustable output phase frequency. It is especially
suitable for special transformers such as Z-type transformers,
rectifier transformers, Scott or anti-Scott transformers, etc. The
tester adopts the new algorithm developed by our company to measure
the ratio of three-phase transformer and ensure the measurement
accuracy without adjusting the balance of the three-phase power
supply. Therefore, the transformer ratio and wiring method can be
measured in about 3 seconds.

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Wiring and notice: When using the tester, please follow the
instructions.
1. The ground terminal or the ground wire in the power cable
should be grounded reliably.
2. Please note that the four-color test wires at the high-voltage
side in yellow, green, red and black correspond respectively to
the transformer A, B, C, N terminals. The three-color test wires
at the low-voltage side in yellow, green and red correspond
respectively to the transformer a, b, c, n terminals. Be sure to
make correct connections.
3. When testing the Scott transformer, the high voltage side is
the same as the above, low-voltage side a, β, n correspond to a,
b, c terminal.
For single-phase transformer, high-voltage side A, X correspond
to A, C terminals, low-voltage side a, x corresponds to a, c
terminals.
4. For general Y / y, Y / d, D / d, D / y, ZN / y, ZN / d normal
connection group measurements, connection to the neutral point N
terminal is not needed. For single-phase transformer measurements,
please use the yellow, green test clips at high-voltage side and
the yellow, green test clips at low-voltage side.
5. Please enter correct setting parameters before test. The group
label and the measured transformer must be consistent. If not
sure, choose unknown to be measured by the tester automatically.
6. If you the rated ratio is not put in, results only show the
measured ratio value, and do not show the error.
7. To make self-test, please use the built-in output and
externally connect standard instrument. Make comparisons between
the first and second voltage measurements to check its
accuracy.( The accuracy cannot be confirmed in measuring range as

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the nonlinearity of the Potential Transformer.)
II. Main Functions and Characters
1. The tester makes automatic measurement with no need to set any
parameters and automatically completes the three-phase ratio and
connection group measurements with easy operation. All you need to do is
to press a button.
2. The tester measures three-phase and single-phase transformer ratios
automatically, and calculates the ratio error.
3. The tester has built-in three-phase signal source, which can make
measurement of Y / y, Y / d, D / y, D / d, ZN / y, ZN / d, rectifier transformer,
traction transformer and all kinds of ratios of transformer connection
groups.
4. The tester can measure transformer connection group label and polarity to
clearly display the first and second winding connection vector. intuitive and
clear, the instrument comes with self calibration function, according to self
calibration results to determine the test line or instrument failure
5. The tester can track the transformer on-load tap-changer position
automatically, and indicate the current tap point automatically.
6. The tester can display a transformer’s first and secondary voltage
Oscillograms and phase relationship. It can measure transformer’s first
and second harmonic voltages, to facilitate the analysis of transformer
failure.
7. The tester is with CT, PT ratio, polarity testing function
8. The tester has perfect and reliable automatic protection, to ensure the
intactness of the tester under abnormal conditions.
9. The tester has small size and light weight. It makes accurate measurement at
fast speed (about 3 seconds to complete the test).
10. The tester is available to store and print all the test results. It has Built-in
128M memory (extendable to 4G memory card), available to export the
database by USB, or upload to computer. The database supports excel

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spreadsheet opening.
11. The tester has 7-inch true color touch screen operation, emwinGUI interface
and support English input, which is easy and convenient. It also has no
power-down calendar and clock function. The test time can be stored at any
time.
12. The tester support on-site record print by Bluetooth or serial printer.
III. Main Technical Specifications
1. Ratio measurement range: 0.8-5000(0.8-20000 for Customization)
1. 2. Ratio measurement accuracy:
0.2%（0.8-1000），0.5%（1000-5000）,0.1%（0.8-2000），0.2%（2000-
20000）( customized)
3. Input voltage: HV side output AC 24V
4. Working power: AC220V ±15%
5. Operating temperature: -10 ℃-40 ℃
6. Environmental humidity: 10% -85%
7. Volume: 270 ×190 ×70mm
8. Weight: 2kg (not including test wires)
IV. Key Set
The tester is a full touch screen operation, with 16 keys of the numeric keypad
and digital phonetic alphabet (similar to the computer keyboard).
Figure:

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Number key “0-9”: Used to enter data in parameter input status. “a-z” key is
used to input user name or transformer type, etc. The "abc" key is used to switch
from the numeric keyboard to the alphabet keyboard. The “123” is used to switch the
alphanumeric keyboard to the numeric keypad. The “C/e” and “c/E” key is used to
switch between the Chinese and English input method. The “X” is used to close the
soft keyboard. The “keyboard” is used to move the keyboard freely on the screen.
Press and hold the button by hand, you can drag the keyboard to any position on the
screen. The “Back” is the backspace key to clear the character before the cursor. The
“CE” is to clear all the characters current entered. The “Ent” key is the Enter key.
V. Operation Method
Connect the power wire, test wire and ground wire according to the instruction
and notice 2, 3, 4, 5 in this manual. Turn on the power and enter the main interface of
the computer.
Figure:

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Please click the "next" button on the screen to enter the test program interface.
Then click the "start" button, turn ratio and wiring method will be tested
automatically.
Figure:
5.1 Parameter Setting
Set parameters before the test. Click the “parameter settings” button to enter the
parameter settings interface.
Figure:
Click the input box which needs to be set.
Storage No.: To set the record number of the test is to be stored.
Transformer No.: store information of the transformer under test.

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1st Voltage: Transformer rated voltage of high voltage side
2nd Voltage: Transformer rated voltage of low voltage side
Total tap number: The total number of tap points for multi-tap transformer. If
it's not a multi-tap transformer, total tap number should be set as 1 (initial value 1).
Tap distance: the adjustment percentage of each tap ratio, e.g. 1.25%, then 1.25
should be entered.
Connection group: Select the transformer wiring methods such as: Y / y \ D / y,
ZN / y, etc. If you are not sure about the wiring method, please select unknown, then
the tester will detect automatically. Click the “Save” button after setting completed to
save the information to the database.
5.2 Parameter measurement
Click the “parameter measurement” button to carry out the turn ratio test.
Figure:
Click the “start” button to start the test, and it takes about 3 seconds to complete
the test and then display the testing results. “First” and “Second” is the first and
second voltage of the tested transformer. “Angle” is the difference between the first
and the second voltage angle (clock time). “Ratio” is the measured turn ratio. “Error”
is the error with the standard ratio. “Tap position” is the present tap measured by the
instrument. “Wiring method” is also actual measured wiring method.
When click “save”, the system will prompt which tap records it is to be stored.
Select the correct tap to store the current test results into the database.

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Figure:
The Scott and Anti-Scott transformers are two phase ratios, shown in BC and CA
phase.
5.3 Oscillogram
After the test is started and before the test is complete, click the “Oscillogram”
button to display the voltage waveforms of the first and second voltage applied to
transformer.
Figure：
Click corresponding button of U1, U2, U3, I1, I2 and I3 to display or close

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waveform. Click the button "+" or "-” to enlarge or shrink the wave shape and the
"<" or the ">" to stretch the waveform. Also move the bar at the bottom for moving
the display.
5.4 Harmonic analysis
After the test is started and before the test is complete, click the “Harmonic
Analysis” button to analyze the harmonic content of the first and second phase
voltage.
Figure:
As shown in the image above, select the “U1” to display the harmonic of the U1, and
the "<" or ">" to display the harmonic content and the percentage from 1-32.
5.5 Record
After the test is completed, the testing results can be exported to the USB or
uploaded to computer.
Figure:

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The left side shows the number of records on the database, and the right side
displays details of one record. Click the main scroll bar to scroll up and down or left
and right to display all the information. Select a record and click the print button to
print the test results through serial port or Bluetooth. Insert USB drive and click
“export”, the entire database can be exported to USB flash drive (insert the USB and
wait two or three seconds, so that the instrument could detect the USB flash drive).
USB database adopts Dbase3 format, so it could be open, edit and print through
excel spreadsheet. There is no need to install background management software,
which makes it more convenient for user management.
VI. After-sales service
The company provides free maintenance for quality problem within one year
after purchase and life-long warranty plus technical services. If any abnormal
condition or fault about the tester is detected, please contact the company in time so
that we can arrange the most convenient scheme for you, and to provide you with the
fastest on-site service.