Huazheng HZ-3110B User manual

HZ-3110B
Transformer DC Resistance
Tester
Huazheng Electric Manufacturing (Baoding) Co., Ltd

Dear use r:
Thank you fo r choosing HZ -3110BTran sformer DC Res is tance Teste r.
We hope that this instrum ent can mak e your wo rk easier and mo re
enjoyable, so that you can get the feel in g of office au tomation in the test
and an al ysis work.
Be fore using th e instrum en t, please rea d this manual, and ope rate and
maintain the instrum ent accordi ng to the manual to pr olong its servi ce life .
"Just a lig ht pr es s, the tes t will be co mp le ted au tomatically" is th e
oper at ing cha racteristics of thi s instrument.
If you ar e sat isfi ed with this instrum en t, pl ea se tell your col le ag ue s;
if you are not sat isfied wi th th is instrume nt, pl ease call [phone] to
te ll you to serve you at all ti me s- Ba od in g Huazheng Electri c Ma nu facturing
Co. , Lt d., our company will de finite ly make you satis fie d !

Contents
I. Introduction................................................................................................................................... 1
II.Configuration.................................................................................................................................1
III.Safety Measure........................................................................................................................... 2
IV.Presentation Of The System.....................................................................................................3
V.Instrument Operation Instruction...............................................................................................3
VI.Test And Operating.....................................................................................................................7
VII. Communication.........................................................................................................................9
VIII.Caution.......................................................................................................................................9
IX.After-sales Services.................................................................................................................10
X. Packing List............................................................................................................................... 11

1
I. Introduction
The DC resistance is the transformer’s semi-finished product, finished product test,
installation, commissioning test, and electric part prevention test necessary test project，
the transformer coil can effectively find the device welding, connecting parts loose,
missing unit, disconnection, and other manufacturing default and other hidden danger
occurred after operation.
The DC Resistance transformer to meet fast measurement requirement, we
developed HZ-3110B DC Resistance Tester. The instrument is a newpowerful technology,
small size, light weight, high output current and other characteristics.
The device is controlled by the microcontroller, with a high degree of automation,
automatic discharge functions. It is a test instrument of high precision, simple, direct way
to achieve fast transformer measurement.
II.Configuration
1. The instrument can use the mobile phone to control the instrument through the
special software. The test data is stored in a fixed format on the mobile phone,
which is convenient for data query at any time.
2. The maximum output voltage of the instrument is 24V, which is convenient for
selecting a larger test current and improving the test speed.
3. The instrument adopts advanced power supply technology, with multiple current
position, test range is wide, suitable for testing DC resistance of large and medium
size transformer.
4. with anti-potential impact, test process interrupt line and power failure, power
supply overheating and other protection functions, can reliably protect the impact of
the back EMF on the instrument, and synchronize the sound alarm.
5. with any temperature conversion function of copper and aluminum material, touch
input arbitrary winding temperature and conversion temperature.
6. Intelligent power management technology, instrument is always working at
minimum power state, effective energy saving, reduce heat.
7. Seven-inch high-brightness touch color LCD, clear display under strong light, full

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touch screen operation, free switching between Chinese and English.
8. With calendar clock and power storage, can store 1000 groups data, can be check
at any time.
9. The instrument has bluetooth communication, RS232 communication and USB
interface for computer communication and U disk data storage.
10. It can print test results with its own surface micro-printer.
III.Safety Measure
1. Output current：automatic、<20mA 、40mA、200mA、1A、5A、10A
2. Resolution：0.1μΩ
3. Range：0.5mΩ～0.8Ω （10A）
1mΩ-4Ω （5 A）
5mΩ-20Ω ( 1 A)
100mΩ-100Ω (200mA)
1Ω-500Ω （40mA）
100Ω-100KΩ （<20mA）
4. Accuracy：±(0.2%+2 Readings)
5. Operating temperature：0~40℃
6. Ambient humidity：≤90%RH，(non condensed)
7. size: 360*290*170 mm.
8. Instrument weight :tester：6 KG Wire box：5 KG

3
IV.Presentation Of The System
~220V：Power switch, machine power input, AC socket, safety and switch.
：Earthed terminal，used for whole instrument earthing,for safety protection.
I+、I-：Current output terminals ,I+ is the positive current; I- is the negative current.
V+、V-：Voltage input terminals, V+ is the positive voltage;V- is the negative voltage.
RS232: Universal series interface, can controlled by computer;
USB: Can output the testing results to USB.
Fan：Air outlet
V.Instrument Operation Instruction
1、The boot interface is shown in figure 1：

4
Figure 1
Press "Data test" to enter the following interface, as shown in figure 2
Figure 2
Model of test product：Click to edit the name of test product
；
Winding temperature ：Click will bring up to set temperature ，
click to delete，click to confirm,click to back;
Convert temperature ：Click will bring up to set temperature ，
click to delete，click to confirm,click to back;
Tap position:Click will bring up setting ，click to delete ，
click to confirm，click to back;
Test phase：Click circulates between AB、BC、CA、AO、BO、CO、AmBm、
BmCm、CmAm、AmOm、BmOm、CmOm、ab、bc、ca、ao、bo、co;
Test current：Click The current circulates between automatic 、<20mA、40mA、

5
200mA、1A、5A、10A;
3、After the current is selected, click "start measurement" to display "please wait while
charging" to enter the test state. After a few seconds, the test result will be displayed, as
shown in figure 3
Figure 3
After displaying the test results, click to directly switch the "Tap position" without
returning to the main interface. After switching tap position, wait patiently for A few
seconds for the test results. Next, you can save the test results by "Local storage", or
click "U disk storage" and "Print". Click "Return to main page" and "Return to main
interface";
4、Click "Data management" in figure 1 to enter the data query interface, as shown in
figure 4：

6
Figure 4
Click to query the historical data and delete the data, or to store and print the
data on the U disk. Click return to the home page and return to the main interface;
5、Click "Parameter setting" in figure 1 to enter the "parameter setting" interface, as
shown in figure 5：
Figure 5
Brightness adjustment: according to the scene environment, the screen brightness
can be adjusted by moving the button
Language setting: click the button to switch the Chinese/English interface
Manufacturer Settings: only manufacturer can set
Click the Settings to return to the home page and return to the main interface.

7
6、Click "clock modification" in figure 1 to enter the clock modification interface, as shown
in figure 6：
Figure 6
Click to set date and time；
VI.Test And Operating
1.Connection ：Connect the testing product to the device through test terminal, joint
firm;meanwhile insure a well connection of the earthing wire.
A: Single phase testing method, to see the following drawing.
A
B
C
I+
I-
被
测
试
品
测试仪
O
V+
V-
a
b
c
Testing
product
Measurement device
B. magnetic assisted connections see picture 3 to 5 （suitable Y（N）-d-11junction group）

8
A
B
C
I+
I-
Measurement device
O
V+
V-
a
b
c
Testing
product
Pic 3
A
B
C
I+
I-
Measurement device
O
V+
V-
a
b
c
Testing
product
Pic 4

9
A
B
C
I+
I-
Measurement device
O
V+
V-
a
b
c
Testing
product
Picture 3, 4, 5 respectively measure low voltage Rac, Rba, Rcb connection
VII. Communication
Steps to connect the phone to the instrument:
1.The instrument is powered on and turned on
2. Turn on the Bluetooth function of the mobile phone and click "Search for Devices"
3. Select the corresponding device from the searched devices (direct resistance device
name format is "ZZxxxxxxxxxx") to connect. Enter the "1234" pairing code in the
Bluetooth pairing request box, click OK, and wait for the device to match successfully.
4. Open the software and click the gray Bluetooth icon in the upper right corner of the
homepage. Select the device that just matched successfully in the pop-up menu.
5. After the wait for connection prompt in the software disappears, the connection is
successful.
VIII.Caution
1. When the inductive load is measured, the test line can not be removed directly, so as to
avoid endangering the safety of the tester and equipment due to the inductance
discharge. The output end of the machine is provided with a discharge circuit. After the
instrument is reset, the inductance releases energy through the instrument. The test line
must not be removed until the discharge indication has been completed.
Pic 5

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2. For no-load tap-changer transformer, it is not allowed to switch tap-changer during
measurement.
3. If the power supply is suddenly cut off during the measurement, this opportunity will
automatically start discharging. Please do not dismantle the wiring immediately, and wait
for at least 30 seconds before dismantling the wiring.
4. When measuring, do not short-circuit other untested windings to ground, otherwise the
magnetization process of transformer will be slowed down, the data stabilization time will
be prolonged or the value is wrong.
5. Check the power supply voltage before starting: 220V + 10% AC, 50Hz.
6. Make sure that the equipment under test has been cut off and disconnected from other
live equipment during the test.
7. Shell must be grounded reliably during test.
8. No irrelevant items are allowed to be stacked on and around the equipment panel
during the test.
9. When replacing safety pipes and fittings, please use the same model as this
instrument (see technical specifications for details).
10. This instrument should be moisture-proof and oil-proof.
11. When choosing the current, we should refer to the range in the technical index column.
When exceeding the range, because the current can not reach the preset value, the
instrument has been in the "charging" state. At this time, we should press the reset key to
reset the instrument and re-select the smaller current gear.
IX.After-sales Services
Instrument from the date of purchase within one year, free maintenance of product
quality problems, lifelong maintenance and technical services. If you find any abnormal
condition or malfunction of the instrument, please contact the company in time, so as to
arrange the most convenient solution for you, and provide you with the fastest on-site
service.

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X. Packing List
No.
Item
Qty
1
Main engine
1
2
Power line
1
3
Fuse pipe
2
4
Red test line
1
5
Black test line
1
6
Print paper
1
7
Test sample（Standard resistance）
1
8
Serial port line
1
9
Ground lead
1