Huazheng HZJD-2 User manual

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

Dear user:
Thank you for choosing HZJD-2 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 CONDITIONS ....................................................................................................... 2
V.PANEL DESCRIPTION AND OPERATION MATTERS NEEDING ATTENTION .2
VI.OPERATION APPROACH ...............................................................................................5
Ⅶ.OIL CUP INTRODUTION ...............................................................................................10

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I.OVERVIEW
Insul ation Oil Di ss ip atio n Fac tor and Re si stivit y Measuring Sys tem DTL, 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.
7. More convenient the experimental parameter is set. Temperature setting range 0～
120℃, AC voltage setting range 500～2000V, DC voltage setting range 300V～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

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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 factor0.00001
Measured temperature range：0～120℃
Temperature measurement error：±0.5℃
Test Voltage AC(RMS)：500～2000V Continuously adjustable, frequency 50Hz
Test Voltage DC：300V～500V Continuously adjustable
Power consumption：100W
External dimensions：500×360×420
Total weight：22Kg
IV.USE CONDITIONS
Ambient temperature：0℃～40℃
Relative humidity(RH)：<75%
V.PANEL DESCRIPTION AND OPERATION MATTERS
NEEDING ATTENTION
1. Panel description