1.Product function:

   Transformer Anti-interference Dielectric Loss Measurement or Laboratory Precision Dielectric Loss Measurement

   2.Product characteristics:

   The frequency conversion anti-jamming technology is adopted.Under 200% interference, it can still measure accurately and the test data is stable. It is suitable for anti-interference dielectric loss test in the field.

   Using frequency floating, digital waveform analysis and Bridge self-calibration technology, combined with high-precision three-terminal standard capacitor, high-precision dielectric loss measurement is realized.

   HaveMeasuring function of CVT self-excitation method.

   Equipped with micro printer, computerRS232 interface

   ETCR9720 series full-automatic frequency conversion dielectric loss tester is used for on-site anti-interference dielectric loss measurement of transformer or precise dielectric loss measurement in laboratory. The instrument has an integrated structure with built-in dielectric loss bridge, variable frequency power supply, test transformer and standard capacitor. Using frequency conversion anti-jamming and Fourier transform digital filter technology, automatic intelligent measurement, measurement data under strong interference is very stable. The measurement results are displayed by large LCD screen, and can be printed out by a self-contained micro printer, with RS232 computer interface and 100 sets of data storage.

   3.Model Category:

                  Model

      Dielectric loss and capacitance range

      Test current

      Measuring function

                ETCR9720A

      3~60kPF

      10 mu A~5A

      Positive Joint + Reverse Joint

   4.Technical specifications:

                  Product model

      ETCR9720A

                CVT self-excitation measurement

      Nothing

                Input power supply

      180V~270VAC, 50Hz/60Hz (+1%), municipal or generator power supply

                Capacitance range

      Capacitance range: 3-60 kPF; Resolution: Maximum 0.001 pF

Internal high pressure: 3pF~60000pF/10kV; 60pF~1.2uF/0.5kV

External High Voltage: 3pF~1.5uF/10KV; 60pF~30uF/0.5KV

                Dielectric loss accuracy

      Cx: (reading * 1%+1pF); TG delta: (+1%+0.00040)

                Anti-interference index

      Frequency conversion anti-jamming can still achieve the above accuracy under 200% interference.

                Maximum output current

      200mA/10kV

                TG delta range

      Unconstrained, resolution 0.001%, automatic identification of capacitance, inductance and resistance

                Test current range

      10 mu A~5A

                Internal high pressure

      Setting voltage range: 0.5~10kV; Voltage accuracy: +(1.5%*reading+10V); Voltage resolution: 1V

Maximum output current: 200 mA

                Applied high pressure

      Maximum test current 5A/40~70Hz for positive connection

Maximum test current of 10 kV in reverse connection/5A/ 40~70Hz

                Test frequency

      45-65Hz integer frequency;49/51Hz, 45/55Hz automatic dual frequency conversion; frequency accuracy: +0.01Hz

                High Voltage Dielectric Loss

      Support

                Circuit discharge indication

      Yes

                Measuring time

      About 30 seconds, depending on the measurement method

                Weight

      22kg

                Host size

      34x26x27cm

                computer interface

      Standard RS232 interface

                data storage

      100 group

                Printer

      Self-contained miniature thermal printer

                Random attachment

      Host: 1; High Voltage Cable (8m): 1; Low Voltage Cable: 2; Power Cable: 1; Ground Cable: 1; CVT wiring: 1; Standby Printing Paper: 1; Toolkit: 1