The Anti-Interference Automatic Dielectric Loss Tester employs variable-frequency power supply technology, utilizing microcontrollers and advanced electronics to perform automatic frequency conversion, analog-to-digital conversion, and data processing. This design ensures robust anti-interference capabilities, rapid testing speeds, high measurement accuracy, and user-friendly operation.
The variable-frequency power supply incorporates a high-power switching power supply unit, generating pure sinusoidal outputs at single frequencies ranging from 45 Hz to 65 Hz, as well as dual-frequency combinations (47.5 Hz/52.5 Hz, 45.0 Hz/55.0 Hz, 57.5 Hz/62.5 Hz, and 55.0 Hz/65.0 Hz), with automatic voltage application. Furthermore, the device automatically filters out 50 Hz interference, making it ideally suited for field testing in environments characterized by high electromagnetic interference—such as substations.
1. Have CVT self-excitation test, primary wiring, and measure the capacitance of C1 and C2 and tg δ.
2, with the reverse wiring low voltage shielding, high voltage shielding function, in the case of CVT bus grounding, to C1110kV reverse wiring can be measured.
3, with external voltage and external CNThe measurement function.
4. With the function of multi-channel simultaneous measurement, it is possible to test the medium loss value of the four test articles simultaneously.
5. Using frequency conversion technology to eliminate 50Hz power frequency interference, even in the environment can be measured with strong electromagnetic interference.
6, Over-current protection function, in the test article short circuit or breakdown of the instrument is not damaged.
7, grounding protection function, in the instrument grounding is poor or no grounding of the instrument does not work.
8. Attach standard capacitor and high voltage power supply to facilitate field testing and reduce site wiring.
9. The instrument adopts a large screen LCD, which is simple to operate. The test process is prompted through the Chinese character menu.
10. There is a corresponding wiring diagram under each functional interface in the instrument, which greatly facilitates the operator wiring.
11. Have the function of switching between Chinese and English.
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1 |
service condition |
-15℃∽40℃ |
RH＜80% |
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2 |
Anti-interference principle |
variable-frequency method |
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3 |
source |
AC 220V±10% |
Allow generator |
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4 |
High voltage output |
0.5kV ∽10kV |
Every interval 0.1kV |
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accuracy |
2% |
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maximum current |
200mA |
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capacity |
2000VA |
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5 |
Self-excitation power supply |
AC 0V∽50V/40A |
Single-frequency：45.0Hz-65.0Hz is arbitrarily adjustable double frequency 45.0HZ/55HZ 47.5HZ/52.5HZ 55.0H Z/65.0H Z 57.5HZ/62.5HZ |
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6 |
resolution ratio |
tgδ: 0.001% |
Cx: 0.001pF |
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7 |
accuracy |
△ Tg δ: ± (reading * 1.0% + 0.040%) |
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△ Cx: ± (reading * 1.0%+1.00PF) |
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8 |
measuring range |
tgδ |
unrestricted |
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Cx |
15pF ＜ Cx ＜ 300nF |
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10kV |
Cx =(Cx 1+Cx 2+Cx 3+Cx 4)＜60 nF |
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5kV |
Cx =(Cx 1+Cx 2+Cx 3+Cx 4)＜150 nF |
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1kV |
Cx =(Cx 1+Cx 2+Cx 3+Cx 4)＜300 nF |
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CVT test |
Cx =(Cx 1+Cx 2+Cx 3+Cx 4)＜300 nF |
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9 |
External size (host) (mm) |
395*325*330 |
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External size (accessories) (mm) |
440*370*150 |
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10 |
size of memory |
The 200 groups support the U-disk data storage |
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11 |
Weight (host) |
25kg |
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Weight (accessory box) |
7.6kg |
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