Performance Feature
1. The instrument adoptsFourier transform digital filtering technology to measure capacitance,dielectric loss and other parameters. The precision of the test results ishigh, which is convenient for automatic measurement.
2. The instrument adoptsfrequency conversion technology to eliminate 50Hz power frequency interferencein the field, and reliable data can be measured even in the environment ofstrong electromagnetic interference.
3. Use full-touch super largeLCD, easy to operate. Full touch LCD screen, large full graphical operationinterface, each
process is clear, operators do not need additional professionaltraining to use. The whole process can be
measured with a touch.
4. Data storage: it isequipped with calendar chip and large-capacity memory, which can save the testresults at any time, check the history record at any time, and print out. Thecurrent time and storage time can be displayed and printed at any time.
5. Scientific and advanceddata management: instrument data can be exported through U disk. Data can
beviewed and managed by special software on any PC.
6. The instrument is easy tooperate, and the measurement process is controlled by the microprocessor. As
long as the appropriate measurement method is selected, the data measurementcan be completed
automatically under the control of the microprocessor.
7. Integrated model, withstandard capacitor and high-voltage power supply, facilitates field testing andreduces field wiring.
8. The measurement accuracy ofthe instrument is high, which can meet the requirements of oil dielectric
lossmeasurement. Therefore, the measurement of oil dielectric loss can be achievedonly by equipping
standard oil cup and special test line.
9. It has reverse wiringlow-voltage shielding function. When the 220kV CVT bus is grounded, 10kVreverse wiring dielectric loss
measurement can be performed on the C11 withoutremoving the wires.
10. Able to do ac withstandtest. It is convenient for PT, CT secondary side ac withstand voltage,
400Vlow-voltage system to do the withstand voltage test.
11. It can identify thefrequency of external high voltage power supply (40Hz~70Hz), and allow the useof
frequency power supply or serial resonant power supply to conductlarge-capacity and high-voltage dielectric loss test.
12. With CVT test function,CVT self-excitation test can be realized, and 4 protection limits of highvoltage/current and low voltage/current can be
set to ensure the safety ofperson and equipment.
13. When testing CVT, not onlythe capacitance and dielectric loss values of C1 and C2 can be
automaticallytested, but also the total capacitance and dielectric loss values of CVTequipment can be tested
14. Equipped with thermalprinter for printing and output, with calendar clock, convenient for users
toproduce test report, with U disk output.
15. With a computer interface. A computercan control 32 instruments, which can be integrated into the
comprehensivehigh-voltage test vehicle to achieve measurement, data processing and reportoutput.
16. Grounding protection function, when theinstrument is not grounded or the grounding is bad, the instrument does notenter the normal program, does not output high voltage. Over-currentprotection, the instrument will not be damaged in short circuit or breakdown.
17. Electric shock protection function: whenthe operator of the instrument accidentally touches the electric shock,
theinstrument will immediately cut off the high voltage to ensure the safety ofthe test personnel.
Technical Indicators
Accuracy: Cx: ±(readings×1%+1pF)
tgδ: ±(readings×1%+0.00040)
Anti-interference index: frequency conversionanti-interference, can still achieve the above accuracy under the interferenceof 200%.
Capacitance range:
Internal highvoltage:3pF~60000pF/10kV 60pF~1μF/0.5kV
External highvoltage: 3pF~1.5μF/10kV 60pF~30μF/0.5kV
Resolution: up to 0.001 pF, 4-bit significantdigits
Tgδ range: no limi,The resolution is0.001%. The capacitance, inductance and resistance can be
identifiedautomatically.
Test current range:10μA~5A
Internal high voltage:
Setting Voltage Range:0.5~10kV
Maximum output current:200mA
Boost and drop voltage mode: thevoltage is set at will. Such as 5123 v.
Test frequency: 40-70Hz single frequency can beset at will. For example, 48.7 Hz.
50± 0.1Hz to 50±10Hz automatic dual frequencyconversion optional setting.
60± 0.1Hz to 60±10Hz automatic dual frequencyconversion optional setting.
Frequency accuracy: ±0.01Hz
External high voltage: maximum test current 5A,power frequency or frequency conversion of 40-70Hz during positive connection
Maximum test current 10kV/5A, power frequency orfrequency conversion 40-70Hz
CVT self-excitation method low voltage output:output voltage 3~50V, output current 3~30A
Measurement time: about 40s, related tomeasurement method
Input power: 180V ~ 270VAC, 50Hz±1%, municipal or generator power supply
Computer interface: standard RS232 interface, Udisk socket (automatic U disk storage data).
Printer: micro thermal printer
environment temperature: -10℃ ~ 50℃
relative humidity: <90%
Overall dimension:430×330×350mm
Weight: 28kg