Capacitance Tan Delta Tester

Description

Transformer Capacitance & Tan Delta Tester , Automatic Tan Delta Tester , Dielectric Loss & Capacitance,Transformer Dielectric Loss Tester

I. Products Description

Model HT-GST Automatic 10KV Capacitance ＆Dissipation Factor Test Set is used to measure dissipation factor (PF) in heavy interference site such as power plants or power substations. It can also be used in laboratory for high accurate test. The meter is whole in one designed: including precision digital bridge, power unit, reference capacitor (CN), step-up transformer and other electronic circuits. It’s also using frequency shift technology, FFT (Fast Fourier Transform algorithm) and digital filtering. When started, it’s running automatically and then outputs the results on LCD display and prints the results automatically.

HT-GST Tan Delta (dissipation factor) Tester consists of variable frequency power, tan delta bridge, testing transformer and standard capacitor inside the tester. Variable frequency power can produce five kinds of frequency: 45Hz, 50Hz, 55Hz, 60Hz and 65Hz under which test can be done. Variable frequency technique adopted in this tester can ensure high accuracy in high interference environment.

II. Test principle

Fig 1 Wiring Diagram of Main Power

RX1---Sampling resistance in ungrounded test specimen measurement

RX2---Sampling resistance in grounded test specimen measurement

CN---Standard capacitor

RN---Sampling resistance of reference signal

CVT---Voltage output terminal in CVT measurement by means of self-excitation.

III. Technical Parameters

1. Capacitance range: Internal HV: 3pF-60000pF/10kV;  60pF-1μF/0.5kV
2. Test accuracy: Cx: ±(reading×1%+1pF)
a) tgδ: ±(reading×1%+0.00040)
3. External HV: 3pF-1.5μF/10kV;  60pF-30μF/0
4. Resolution: Maximum 0.001pF, 4 valid figures.
5. Tgδ range:unlimited, 0.001% resolution, automatic identification for capacitance, inductance and resistance of three tested articles.
6. Test current range: 10μA-1A
7. Internal HV: Set voltage range: 0.5-10kV
8. Maximum output current: 200mA
9. Buck-bust method: continuous stepless regulation
10. Test frequency: 45, 50, 55 single frequency 45/55Hz automatic dual variable frequency
11. External HV: In case of UST, maximum test current is 1A, and power frequency or variable frequency is 40-70Hz
12. In case of GST, maximum test current is 10kV/1A, and power frequency or variable frequency is 40-70Hz
13. CVT self-exciting low voltage output: Output voltage 3-50V, output current 3-30A
14. Measuring duration: About 40s, depending on measuring method
15. Input power supply: 180V-270VAC, 50Hz/60Hz±1%, supplied by alternating current or generator
16. Computer interface: Standard RS232 interface
17. Printer: WH-A7 mini-type thermal printer
18. Environment temperature: -10℃-50℃
19. Relative humidity: <90%
20. Overall dimension:460×360×350mm
21. Weight:28kg

IV. Configuration:

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