Huazheng HZJD-2Z User manual

HZJD-2Z
Insulating Oil Dielectric Loss And
Resistivity Tester
Huazheng Electric Manufacturing (Baoding) Co., Ltd

Dear user:
Thank you for choosing HZJD-2Z Insulating Oil Dielectric Loss And Resistivity Tester.
We hope that this instrument will make your work more relaxed and enjoyable, and
make you feel office automation in your test and analysis work.
Before using the instrument, please read this manual, and operate and maintain the
instrument according to the manual to extend its service life.
"Just press lightly, the test will be completed automatically" is the operating
characteristic of this instrument.
If you are satisfied with this instrument, please tell your colleagues; if you are
dissatisfied with this instrument, please call [phone] and tell us-Baoding
Huazheng Electric Manufacturing Co., Ltd., our company will definitely satisfy you!

Contents
I. Overview.......................................................................................................................................1
II. The Main Functions and Features..................................................................................... 1
III. Major Technical Indicators.................................................................................................. 2
IV.Use Condition............................................................................................................................3
V.Panel Description and Operation Matters Needing Attention....................................3
VI.Operation Approach.................................................................................................................... 5
VII. Oil Cup Introdution.................................................................................................................. 10
VIII.Packing List............................................................................... 错误！未定义书签。

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I. Overview
HZJD-2Z Insulating oil dielectric loss and resistivity tester, is designed and
manufactured based on GB/T5654-2007 of《Liquid insulating material of relative
permittivity, dielectric loss factor and DC resistivity measurements》. It is used for
measuring dielectric dissipation factor and DC resistivity of insulating oil and other
insulating liquids. The instrument is characterized by integrated structure, and
integrates test cell, temperature controller, temperature sensor, dielectric loss test
bridge, AC test power, standard capacitor, high resistance meter, DC high voltage
source and other major components. The instrument adopts full digital technology
and all of the intelligent automatic measurement, is equipped with large colcor
screen (800*480) LCD display, which each step has prompted the Chinese, the test
results can be automatically stored and printed output, so that the operator without
professional training will be able to use it proficiently.
II. The Main Functions and Features
1.The test cell used of the three-electrode structure in line with the national
standard GB/T5654-2007, with electrode spacing 2mm, can eliminate the effects of
the stray capacitance and leakage on dielectric loss test results. The apparatus is
equipped with the oil drainage solenoid switch, and we can empty the test cell in
case of not removing it and rinse it with the test sample.
2.The instrument adopts the medium frequency induction heating, PID temperature
control algorithm. This heating method has the advantages of t non-contact between the
test cell and the heating body, even heating, fast speed, convenient control, strict control
of the temperature within error range of the preset temperature.
3.Internal standard capacitor is SF6 gas-filled three-electrode capacitance, and its
capacitor dielectric loss and electrical capacity is independent of ambient temperature,
humidity and other effects, so that the instrument accuracy can be ensured even after
prolonged use.
4.AC test power supply using AC-DC-AC conversion, effectively avoid the fluctuations in
mains voltage and frequency on dielectric loss measurement accuracy effect. Even a
generator, the instrument can work properly.
5.Perfect protection function; When there is over voltage、over current or
high-voltage short circuit, instruments can quickly cut off pressure, and issues a
warning message. When the temperature of the sensor failure or not connected,
the instrument will also issue a warning message.
6.There is a temperature limiting relay in the medium frequency induction heating
furnace. When temperature above 120 degrees, the instrument frees the relay and
stops heating.

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7.More convenient the experimental parameter is set. Temperature setting range
0～120℃, AC voltage setting range 500～2000V, DC voltage setting range 300～
500V.
8.Using of large-screen LCD display, with backlight and clear display. Friendly interface,
simply follow the Chinese menu prompt, enter the command, the instrument can be
automatically tested. And automatically store and print test results.
9.Built-in real-time clock, the test date and time may be saved, displayed and printed with
the test results.
10.Calibration functions of cleaned dry cell. The measurement of dry cell’s capacitance
and dielectric loss factor can determine its cleaning and assembly conditions. The
calibration data is automatically saved and so that it facilitates the calculation of relative
permittivity and DC resistivity.
III. Major Technical Indicators
Voltage supply: AC 220V±10%
Power frequency：50Hz/60Hz ±1%
Measuring range：
Electric capacity 5pF～200pF
Relative Permittivity 1.000～30.000
Dielectric loss factor 0.00001～100
DC Resistivity 2.5MΩm～20TΩm
Measuring accuracy：
Electric capacity ± (1% of measured value+0.5pF)
Relative Permittivity ±1% of measured value
Dielectric dissipation factor ± (1% of measured value+0.0001)
DC Resistivity ±10% of measured value
Resolution：
Electric capacity 0.01pF
Relative capacitivity 0.001
Dielectric dissipation factor 0.00001
Measured temperature range：0～120℃
Temperature measurement error：±0.5℃
Test Voltage AC(RMS)：500～2000V Continuously adjustable, frequency 50Hz
Test Voltage DC：300～500V Continuously adjustable
Power consumption：100W

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External dimensions：500×360×420
Total weight：22Kg
IV.Use Condition
Ambient temperature：0℃～40℃
Relative humidity(RH)：<75%
V.Panel Description and Operation Matters Needing
Attention
1. Panel description
Fig.1 Operating Panel
Fig.2 Top panel

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Fig.3 Back panel
2. Instrument operating instructions and matters needing attention
⑴The instrument must be reliable grounding, power entrance lead into AC220V power.
⑵Open tank cover, and take out the test cell, we should shut the tank cover, when
heating and testing the dielectric loss.
⑶The cover is protective and when you open it, will interrupt the heating and high
pressure.
⑷During the test, there is high pressure and high temperature. Do not contact the test cell,
cable and socket when the power is electrify and testing.
⑸Take care in order to avoid sprinkling the oil into the slot of test cell and the top panel
when injecting and discharging oil.
⑹If it appears dead stop faults phenomenon while testing, turn the system back on, and
restart the instrument.
Use the appropriate power supply cables.
Only use the product-specific power supply line in accordance with the product
specification. Be right to disconnect and connect.
The instrument must be adequately grounded.
In addition to the power line grounding conductor grounding, product shell’s grounding
columns must be grounded
In order to prevent electric shock, the grounding conductor must be connected with the
ground.
Before connecting with the input or output terminals of the product, make sure that the

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product is properly grounded.
Note that rating value of all terminals.
To prevent fire or electric shock hazard, please note that all rating values and markings in
the product.
Before connecting this product, please read the product manual in order to further
understand the information about rating values.
Use the appropriate protective tube.
Use only the protective tube in accordance with provisions of this product type and rating.
Do not operate when there is any suspicion of failure. If you suspect this product is
damaged, please contact our repair staff to check, and do not continue the boot operation.
Align the locating slot when the internal electrode into the external electrode.
Do not operate in humid environments.
Do not operate in explosive environments.
Keep the surface clean and dry.
Special notice: This instrument has high voltage output, improper use can compromise
personal safety, prior to the use of this instrument, be sure to read the instruction manual
carefully!
VI.Operation Approach
1、Place the cleaned test cell in the groove, and connect the test
cable as shown in Fig.2.
2、Start the instrument.
Turn on the power switch, and the LCD displays the main menu as shown in Fig.4.
Fig.4
3、Test Conditions

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Enter “Test Conditions” parameter settings screen as shown in Fig.5.
Fig.5
①Parameter range：Temperature：0~120℃
AC Voltage：500~2200V
DC Voltage：300~500V
②Method for setting parameters
Tap the display position and enter the parameters you want to set.
Tap the [Return] key, the instrument saves the set parameters and returns to the main
menu.The power-on instrument retains the last set parameters and does not need to be
reset.
③Automatic print
Tap [Automatic Print] to turn automatic print on or off.If automatic printing is turned on, the
printer automatically prints the test results after each test is completed.
④time setting
The system clock can be corrected by tapping the time.
4、Dry Cell Calibration
Before entering the calibration, make sure that the test oil cup in the cup position is an
oil-free empty oil cup,and connect the test cable and temperature probe cable.Tap the
[Dry cell calibration] button to enter the calibration screen as shown in Fig.6,tap the [Start]
button to perform the empty cup calibration test.

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Fig.6
①Since the temperature has no significant effect on the capacitance and dielectric loss
factor of the air-filled electrode cup, a lower test temperature can be set. It is
recommended to set the temperature to 10℃above room temperature.Tap the [Return]
button to return to the main menu.
②Calibration result----After the empty cup calibration measurement is completed, the
calibration result is displayed in the screen of Fig. 7.At this time, tap the [Save] button to
save the calibration result, and tap the [Return] button to return to the main menu.
Fig.7
5、Automatic measurement
Before entering the automatic measurement, make sure that the oil cup is filled with oil
and that the test cable is connected.Tap [Test] on the main interface to enter the
automatic measurement screen, as shown in Fig.8.