Anti interference dielectric loss measuring instrument, electronic industry specific instrument

frequency conversionAnti interference dielectric loss measuring instrument

The dielectric loss tester is used for on-site anti-interference dielectric loss measurement or laboratory precision dielectric loss measurement. The instrument is an integrated structure with built-in dielectric bridge, variable frequency power supply, test transformer, and standard capacitor. Adopting frequency conversion anti-interference and Fourier transform digital filtering technology, the measurement is fully automated and intelligent, and the measurement data is very stable under strong interference. The measurement results are displayed on a large LCD screen and come with a built-in micro printer for printing and output.

1.1 Main technical indicators

1.1.1Measurement of dielectric loss and capacitance

Accuracy: Cx: ±(Reading)×1%+1pF）

tgδ: ±(Reading)×1%+0.00040）

Anti interference indicators: Frequency conversion anti-interference, in200%Can still achieve the above accuracy under interference

Range of capacitance: insideShiHigh voltage: 3pF~60000pF/10kV 60pF~1.2μF/0.5kV

outsideShiHigh voltage: 3pF~1.5μF/10kV 60pF~30μF/0.5kV

resolution： highest0.001pF，4Significant digits

tgδScope: Unlimited, resolution0.001%Automatically identify three types of test samples: capacitors, inductors, and resistors.

Test current range：10μA~5A

Apply high pressure internally: Set voltage range: 0.5~10kV

Maximum output current: 200mA

Boosting and lowering method: Continuous smooth adjustment

Voltage accuracy: ±(1.5%×reading+10V)

Voltage resolution: 1V

Test frequency: 45~65HzInteger frequency

49/51HzThe45/55HzAutomatic dual frequency conversion

Frequency accuracy:±0.01Hz

External high pressure: Maximum test current during positive wiring1A / 40~70Hz

Maximum test current during reverse wiring10kV / 1A/ 40~70Hz

CVTSelf excitation method low voltage output:output voltage3~50VOutput current3~30A

Measurement time: about30sRelated to the measurement method

1.1.2Other indicators

Input power supply: 180V~270VAC，50Hz/60Hz±1%Powered by mains electricity or generators

Computer interface: standardRS232interface

printer bring your ownMicro thermal printer

Ambient temperature -10℃~50℃

relative humidity： <90%No condensation

Summary of Main Technical Indicators for Selection

Variable frequency anti-interference

Adopting frequency conversion anti-interference technology, in200%Can still accurately measure under interference, with stable test data, suitable for conducting anti-interference dielectric loss tests on site.

1.2.2high-precision measurement

By using techniques such as frequency fluctuation, digital waveform analysis, and bridge self calibration, combined with high-precision three terminal standard capacitors, high-precision dielectric loss measurement can be achieved, and positive values can be obtained/The accuracy and stability of reverse wiring measurement are consistent.

The input resistance of all ranges of the instrument is lower than2ΩEliminating the impact of additional capacitance on the test line.

It can be connected to an external oil cup for precision insulation oil dielectric loss testing, and can be connected to a solid material measuring electrode for precision insulation material dielectric loss testing.

1.2.3Good compatibility

automatic recognition50Hz / 60HzSystem power supply, supporting generator power supply, can measure normally even with large frequency fluctuations.

Built in series and parallel dielectric loss measurement models, compatible with calibration tables and dielectric loss standards, facilitating instrument calibration.

1.2.4Multi level security protection ensures personal and equipment safety

High voltage protection:Short circuit, breakdown or high voltage current fluctuation of the test sample can cut off the output at high speed in a short-circuit manner.

Low voltage protection:Wrong connection380VPower fluctuations or sudden power outages will activate protection and will not cause overvoltage.

Grounding protection:When the instrument is poorly grounded and the casing carries dangerous voltage, activate the grounding protection.

C V T：The four protection limits of high voltage and current, low voltage and current, will not damage the equipment; Misselected menu will not output excitation voltage.CVTNone during measurement10kVHigh voltage output.

Prevent misoperation:Two level power switch; Real time monitoring of voltage and current; Multiple button confirmations; High wiring terminal/Clear low pressure; Slow boost, can quickly reduce pressure, sound and light alarm.

prevent“Rong Sheng”：Voltage rise may occur when measuring large capacity test samples“Rong Sheng”Effect: The instrument can automatically track the output voltage and maintain a constant test voltage.

抗震性能：The instrument adopts seismic design, which can withstand strong long-distance transportation vibrations and bumps without damage.

high-voltage cableFor high-voltage insulated wires, they can be dragged to the ground for use.

1.2.5Technological breakthrough, powerful functionality

（1）Equipped with an external standard capacitor interface,Automatic tracking of external test power frequency40Hz~70HzSupport large capacity and high voltage dielectric loss tests for power frequency power supplies and series resonant power supplies.

（2）It has a discharge warning function for poor circuit contact to facilitate the judgment of whether the wiring is reliable.

（3）haveCVTaesopsMeasurement function,C₁/C₂It can be measured simultaneously with one wiring, automatically compensating for the effects of busbar grounding and standard capacitor voltage division, without the need for wire replacement or external accessories, and the high-voltage connection line can be dragged to the ground.

（4）Chinese graphic menu with large screen backlightLCDDisplay.

（5）Configure a thermal printer to print data clearly, quickly, and without noise.

（6）Equipped with a calendar clock and storage capability100Group measurement data.