Product Introduction:
Dielectric loss measurement is a basic method in insulation test, which can effectively find out the whole insulation of electrical equipment due to damp deterioration and local defects. It is widely used in electrician manufacture, electrical equipment installation, handover and preventive test.The measurement of dielectric losses of transformers, transformers, reactors, capacitors, bushing and arresters is the most basic method to measure their insulation performance. ZC-221J Tan Delta Tester breaks through the traditional bridge measurement method, Adopt frequency conversion power supply technology, use single chip microcomputer, and modern electronic technology to carry on automatic frequency conversion, analog/digital conversion and data operation. Achieved the characters of Strong anti-interference ability, fast test speed, high accuracy, automatic digitization, easy to operate. Instrument adopts high-power switching power supply, output 45Hz and 55Hz pure sine wave, automatic pressurization, can provide up to 10kv voltage, Automatic filtering of 50Hz interference, suitable for substation and other electromagnetic interference in field test.It is widely used for dielectric loss measurement of transformer, bushing, capacitor, arrester and other equipment in power industry.
Product Parameters
Accuracy: Cx: ± (reading ×1%+1pF)
Tgδ: ± (reading ×1%+0.00040)
Anti - interference index: frequency conversion anti - interference, can still achieve the above accuracy under 200% interference
Capacitance range: internal applied high voltage: 3pF ~ 60000pF/10kV 60pF ~ 1 muon F/ 0.5kv
External applied high voltage: 3pF ~ 1.5muf /10kV 60pF ~ 30muf / 0.5kv
Resolution: highest 0.001pF, 4 significant digits
Tg delta range: unlimited, resolution 0.001%, automatic identification of capacitor, inductor and resistor.
Test current range: 5 μA ~ 5A
Internal applied high voltage: set voltage range: 0.5 ~ 10kV
Maximum output current: 200mA
Lifting voltage: voltage is set at will. Such as 5123 v.
Test frequency: 40-70hz single frequency is randomly set. For example, 48.7 Hz.
Automatic double frequency conversion from 50± 0.1hz to 50±10Hz optional.
Automatic double frequency conversion from 60± 0.1hz to 60±10Hz optional.
Frequency accuracy: ± 0.01hz
External applied high voltage: maximum test current 5A, power frequency or frequency conversion 40-70hz in forward wiring
The maximum test current in negative connection is 10kV/5A, power frequency or frequency conversion 40-70hz
CVT self-excited low voltage output: output voltage 3 ~ 50V, output current 3 ~ 30A
Measurement time: about 40s, related to measurement mode
Input power: 180V ~ 270VAC, 50Hz±1%, mains power or generator power
Computer interface: standard RS232 interface, U disk socket (automatic U disk data storage).
Printer: micro thermal printer ambient temperature: -10ºC ~ 50ºC relative humidity: <90%
External dimension: 430*330*350mm instrument weight: 28kg
Features
1. LCD display, mass storage data, the instrument data can be exported through the U disk, and can generate a work report.
2. Many test modes: internal high voltage, external high voltage, internal standard, external standard, positive connection method, reverse connection method, self excitation method in a variety of ways to test; under the high pressure of outside the standard can do the high voltage of more than 10kV) dielectric loss test.
3. CVT test one-step process: to test the full sealed CVT (capacitive voltage transformer) C1, C2 dielectric loss and capacitance, to achieve the C2, C1 testing at the same. The instrument can also test the CVT ratio and voltage angle difference.
4. Multiple protections safe and reliable: with input voltage fluctuation, output short circuit, overvoltage, over current, temperature and other multiple protection measures.
5. The instrument can be used for measuring the high-voltage electrical equipment of the non grounding or grounding, and can measure the capacitance of the capacitor voltage transformer tgδ and the main capacitor C1 and C2.
6. The instrument is equipped with high voltage transformer, and takes safety protection measures against lightning, zero switching.
Product Features
1. The instrument adopts Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters. The test result has high precision and is convenient to realize automatic measurement.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference on the spot. Reliable test results can be obtained even under strong electromagnetic interference.
3. Adopt full-touch large LCD, simple operation. Large full graphic interface, every processes are very clear, operators can use it without any additional professional training. The whole processes can be operated with the touch screen.
4. Data storage: equipped with calendar chip and mass memory, it can save the test results at any time, view the history record at any time, and print out. Current time and storage time can be displayed and printed at any time
5. Scientific and advanced data management: instrument data can be exported through U disk, and can be viewed and managed by special software on any PC.
6. The instrument is easy to operate and the measurement process is controlled by the microprocessor. As long as the appropriate measurement method is selected, The measurement of the data can be done automatically under the control of the microprocessor.
7. Integrated body, Standard capacitance and high voltage power supply are included to facilitate field test and reduce field wiring
8, the instrument measurement accuracy is high, can meet the requirements of oil dielectric loss measurement, so only need to be equipped with a standard oil cup, and special test line to achieve oil dielectric loss measurement.
9. Grounding, 10kV negative wiring dielectric loss measurement can be carried out for C11 without disconnection
10. Able to do ac withstand test. Convenient to do ac withstand voltage test with PT CT secondary , Convenient to do the withstand voltage test with 400V low voltage system.
11. Able to identify the frequency of external high-voltage power supply from 40Hz to 70Hz, and allow the labor frequency power supply or serial resonant power supply to conduct large-capacity and high-voltage dielectric loss test.
12. With CVT test function, self-excitation test of CVT can be realized, and 4 protection limits of high voltage/current and low voltage/current can be set to ensure personal and equipment safety.
13. When testing CVT, it can not only automatically test the capacitance and dielectric loss of C1 and C2, but also can test the total capacitance and dielectric loss of CVT equipment
14, Equipped with a thermal printer, a calendar clock and U disk output port.
15, with computer interface.One computer can control 32 instruments, which can be integrated into the integrated high-voltage test vehicle to realize measurement, data processing and report output.
16. Grounding protection function. When the instrument is ungrounded or poorly grounded, the instrument will not enter the normal procedure and will not output high voltage. Over current protection function, instrument will not be damaged when testing a short circuit or breakdown sample.
17. Electric shock protection function, When the instrument operator accidentally gets an electric shock, the instrument will cut off the high voltage immediately to ensure the safety of the test personnel.
Why Choose us?
1) Owning core technology and advanced equipment with our own Technology Dept.;
2) On-line operation guidance and professional technical support ability.
3) Good quality can be ensured by our Professional QC team with competitive price.
State Grid Corporation of China is one of our customer!
4) Certifications are available.
5) OEM Service Offered.
6) Design Service Offered.
7) Small trial order can be accepted to see our quality and service.
8) Standardization, effectiveness and timeliness of the pre-sale, in-sale and after sales service.
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