Huazheng HZ-3310E-I User manual

HZ-3310E-I
Portable DC Winding Resistance
Tester
Huazheng Electric Manufacturing (Baoding) Co., Ltd
Dear user:

Thank you for choosing HZ-3310E-I Portable DC Winding Resistance
Tester.
We hope that this instrument can make your work easier and more
enjoyable, so that you can get the feeling of office automation in the test
and analysis work.
Before using the instrument, please read this manual, and operate and
maintain the instrument according to the manual to prolong its service life.
"Just a light press, the test will be completed automatically" is the
operating characteristics of this instrument.
If you are satisfied with this instrument, please tell your colleagues;
if you are not satisfied with this instrument, please call [phone] to
tell you to serve you at all times-Baoding Huazheng Electric Manufacturing
Co., Ltd., our company will definitely make you satisfied !

Contents
I.Important Hint...........................................................................................................................1
II. Introduction.............................................................................................................................1
III. Packaging Content...............................................................................................................1
IV. Functional Characteristics.................................................................................................. 2
V. Technical Indicators...............................................................................................................3
VI. Adjust the Wristband........................................................................................................... 3
VII. Battery Charging................................................................................................................. 4
VIII. Tilt Hand-held Tester......................................................................................................... 4
IX. Product Appearance............................................................................................................4
X. Operation Instructions.......................................................................................................... 6
XI.Matters Needing Attention................................................................................................. 11
XII.Packing List...................................................................................................................... 11

1
I.Important Hint
If the instrument is not in use, please turn off the power in time.
If the instrument is not used for a long time, please charge and discharge regularly.
Batteries should be charged and discharged at least once a month.
It is strictly forbidden to use power shortage, which will severely shorten the battery
life and even make the battery scrap. When the instrument is short of power, the power
supply should be switched off and charged immediately. Avoid battery failure due to
excessive battery discharge time.
Charging lamp: the charging lamp on the charger is bright red during charging and
bright green after charging.
Users must not disassemble the instrument and replace the battery without authorization.
When the instrument or battery fails, please return to the factory.
II. Introduction
Portable DC Winding Resistance Tester is an innovative product with compact size,
hand-held operation, more portable and easy to carry.
The product is not only suitable for the measurement of transformer, mutual inductor,
reactor and other inductive test products, but also suitable for the measurement of copper
bars, conductors, switch contacts and other resistive test products. The instrument has
fast testing speed and high accuracy.
III. Packaging Content
After receiving the packing box, open the packing box and check if there is any
damage. If the freight packing box is damaged or the liner material is indented, please
inform the freight company or our salesman immediately.
Please check if you have received the following items in the product package：
Standard accessories：
√1 Hand-held transformer winding resistance tester
√1 sets of test lines (yellow, green, red and black lines each)
√1 external printer (with printing cable attached）

2
√1 charger（16.8V）
√1 wrist band (attached to a hand-held tester)
√1 printed user manual
√1 copy of certificate and factory test report
Optional：
√1 wireless temperature measurement module (with 2 rubber rod antennas)
√1 charger（4.2V）
IV. Functional Characteristics
Adaptive lithium batteries or 220 v ac supply. After a single charge, the DC resistance
of hundreds of transformers can be tested continuously. The test process is simple
and convenient;
The output current is six grades, the maximum output current is 10A, the maximum
output voltage is 25V, and the current can be automatically selected, which is
convenient and fast.
Wide range and high accuracy，500uΩ～50KΩ.
Three-phase automatic testing can be carried out and the three-phase unbalance
rate can be calculated automatically.
It has the function of resistance temperature conversion, and can be equipped with
wireless temperature measurement module, which can measure the field test
temperature in real time to ensure the accuracy of resistance commutation value.
It has many kinds of protection functions, such as back EMF protection, broken line
protection, power-off protection and over heating alarm.
5.6-inch super industrial high-brightness color LCD screen, still visible under strong
sunlight
Equipped with external printer, facilitate data printing
It can be stored locally and on USB memory.

3
V. Technical Indicators
DC resistance test
Current gear
Measuring range
Current gear
Measuring range
10A
500µΩ~200mΩ
100mA
10Ω~200Ω
5A
10mΩ~1Ω
10mA
50Ω~2KΩ
1A
100mΩ~20Ω
1mA
500Ω~50KΩ
Technical index
Accuracy
±（Reading×0.2%+2
words）
Maximum
resolution
0.1µΩ
Conditions of use and appearance
Working power
supply
Built in lithium battery or external charger, charger input 100~240VAC，
50HZ/60HZ
Charging
voltage
16.8V
Charging
current
≤3A
Charging time
About 4 hr
Use time
More than 8 hr
Host weight
1.6kg（Test line is not
included)）
Dimension
246mm（L）×156mm（W）×62mm
（H）
Use of
temperature
-10℃~50℃
Relative
humidity
≤90%，No dew
VI. Adjust the Wristband
For better grip, strip the belt and adjust the adhesive tape as shown in the following
figure.

4
VII. Battery Charging
When the battery is low after long storage or before the first use of the hand-held
device, please use the charger attached to it to charge the battery for at least 2 hours,
and continue to use the hand-held tester when charging. When the battery is fully
charged, the charger light changes from red to green.
VIII. Tilt Hand-held Tester
In order to take the instrument or expose the side interface during operation, the
hand-held tester can be tilted, as shown in the figure below.
Lift the tilt seat and pull outward
IX. Product Appearance
Top view

5
Front view
Side view
Display panel
Key
Wristband

6
Function
module
Instructions
Test
connection
area
Yellow, green, red and black four-color junction seats correspond to
three-phase A, B, C and neutral point O respectively, and correspond to
the test line (yellow, green, red, black). The other end of the test line has
yellow, green, red and black four-color test pliers, which correspond to
the tested transformer A, B, C, O bushing (if there is no neutral point O
bushing, the black test pliers can be suspended).
Antenna
seat
Please connect special rubber rod antenna for wireless temperature
measurement signal reception.
Display
5.6 inch large industrial high brightness color LCD screen, display
operation menu and test results.
Button
Operate instruments. “↑↓” is the "up and down" key, select to move or
modify data; “←→” is the "left and right" key, select to move or modify
data; "Enter" key, confirm the current operation; "Cancel" key, abandon
the current operation.
Power
switch
The power switch of the whole machine is switched to the open position
when it is switched on. Switch to the close position when it is switched
off.
Function
module
Instructions
RS 232
interface
Connect external printer.
Charging
interface
Use instrument charger to recharge
USB
interface
External USB disk is used to store test data, please use FAT or FAT32
format U disk; in the storage process, it is strictly prohibited to dial out the
USB disk.
X. Operation Instructions
Three-phase tested product test wiring
The yellow, green, red and black clamp of the test line shall be connected with the A,
B, C and O sleeves of the tested product respectively (if there is no neutral O casing, the
black clip can be suspended). At the other end of the test line, connect the yellow, green,
red and black terminals of the meter by color.
Single-phase tested product test wiring
The red and black test clamp of the test line connects the two ends of the tested
product; the other end of the test line connects the red and black terminal of the

7
instrument according to the color.
Intelligent power management
When the instrument is not operated for a long time, the LCD backlight is
automatically dimmed to save power; the instrument has the function of charging
prompt with low power and over-discharge protection; when the instrument is low
power, the charger can be plugged in to charge, and the instrument can be used
normally in the charging process.
Instructions for use of printer
The key of the printer and the indicator of the printer are integrated. When the
printer is powered on, the indicator light is normally on, and it flashes when the paper is
missing. Press the button once and the printer passes the paper.
Printer change paper: take out the rotating spanner and open the paper cover;
Load the printer paper and pull out a piece of printer paper (tear the teeth out a little bit).
Close the cover and press the print head to the print head. Press the print head back to
the print head with a bit of force.
Operation instruction
After all the test wires are connected, turn on the power switch and enter the "main
menu" screen after the instrument is initialized, as shown in the figure below.

8
Select the "DC Resistance Testing" menu to enter the DC resistance parameter
settings screen, as shown below.
No.
Instruction
1
Display date and time.
2
Displays the peripheral and current operation status.
This icon is displayed when you insert a USB drive.
This icon is displayed when the printer is inserted.
This icon is displayed when the temperature measurement module is
connected.
This icon is displayed during testing.
Temperature overheating inside the meter display this icon
3
Power display. This icon flashes when the power is low.
No.
Instruction
4
The main menu operation area of the instrument, select corresponding
functions through “←”→” keys, and press "Enter" to enter the
corresponding menu.
DC resistance test function, can measure transformer, mutual inductor,
reactor and other inductive test products and copper bars, conductors,
switch contacts and other resistance test products.
In the process of query and test, each group of data can be saved; in
the storage query screen, data can be printed and transferred to the
USB disk.
Set the date and time of the instrument.
Password operation is required, not available to the user.
5
SV：Displays the current software version number of the instrument；
HV：Displays the current hardware version number of the instrument.

9
No.
Instruction
1
First-level operation directory, through the “↑↓” key to select these functions,
when these functions are selected, press the “←”→”" key to select the
parameters of the corresponding functions.
Tip: The cursor can quickly jump to the button by pressing the "Enter"
button under the first-level operation directory at “Start Test”.
No. of
tested
product
Set the number of tested product.
Test
winding
Set the test winding of the tested product.
No.
Instruction
Tapping
position
Sets the current tap position.
Test
phase
Set the phase of the tested product，can select“single phase AO”、“single
phase BO”、“single phase CO”、“single phase AB”、“single phase BC”、“single
phase CA”、“three phase Yn”、“three phase Y/△”；
Note: Three-phase unbalance rate can be calculated automatically when
three-phase testing.
Winding
materials
Set the winding material of the tested product, copper and aluminum are
optional. The winding material relates to the conversion coefficient used for
the resistance conversion value.
Test
temperat
ure
Set the current temperature of the tested product, and the temperature
value is from - 99℃to + 99℃. The device can monitor the oil temperature
inside the test product in real time through an external wireless temperature
measuring probe, or set the temperature value manually. When the external
wireless temperature probe is connected, it can't be set manually, so it
needs to close the probe to set manually.
Convert
temperat
ure
Setting the measured resistance value needs to be converted to the
temperature value. The converted temperature value is from 0℃to + 255℃,
which is related to the accuracy of the converted resistance value.
No.
Instruction
Testing
current
Select the test current gear，Choose 1mA、10mA、0.1A、1A、5A、10Aand
automatic.
2
The secondary operation directory corresponds to the setting parameters of
the primary operation directory, and the parameters are modified by “←”→”
key to move the cursor and “↑↓” key.
Tip: the cursor in the second level of operation directory, you can press
the "Enter" or "Cancel" key to jump the cursor to the first level of operation
directory.
3
When the cursor is here, press “Enter” to start the measurement.
4
The range of current selected for testing.
5
An explanation of the selected function.

10
The " Three phase DC resistance test results" screen is shown below.
No.
Instruction
1
Measured resistance values
2
Temperature values needed to be converted to
3
The current measured tap position
4
Resistance after temperature conversion
5
Automatic calculation of three-phase unbalance rate.
6
Menu selection area.
Press the “←”→” button to move the cursor to select the appropriate
function, press the "Enter" button to execute the currently selected
function, and press the "Cancel" button to return to the previous screen.
No.
Instruction
Retest according to the current settings parameters.
Print the current test results by connecting the external printer.
Save the current test results to the local computer or save it to the external
USB disk.
Tip: the data saved to the USB is in WORD format, and can be directly
edited or printed with OFFICE.
7
When testing the phase winding, the temperature of the tested product.
8
Test phase

11
XI.Matters Needing Attention
When testing the no-load tap-changer winding, it is not allowed to switch off the
no-load tap-changer during the testing process or when the power is not fully
discharged.
It is not allowed to dismantle the test line and cut off the power switch during the test
or discharge process.
In the process of testing transformers, the unmeasured side winding must be
opened.
XII.Packing List
No.
Item
Qty
1
Main engine
1
2
Power line
1
3
Red test line
1
4
Black test line
1
5
Yellow test line
1
6
Green test line
1