Anti-Interference D/L Tester Price
Darui Electric recommends：
Anti-int D/L tester is an advanced instrumentfor D/L and capacitance under HV for insulating materials, bushings, cables, capacitors, CT/PT, transformers.
Features
◆ Simple operation, Chinese display, printing.
◆ Easy to use, no conversion needed
◆ Anti-interference D/L tester with built-in HV.
Features
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Uses frequency conversion for accurate measurement under strong E-field interference.
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Chinese menu, microcomputer auto measurement.
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Also for workshop/lab/research D/L measurement. Oil D/L testing: convenient, simple, accurate.
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Normal/reverse wiring for grounded/ungrounded HV equipment. Also measures CVT tgδ and C1/C2 capacitance.
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Built-in HV transformer with zero-cross switching and lightning protection. 0.5-10kV output, safe operation.
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Parameters
1. HV output: 0.5-10kV, 500V/step, 20 steps
HV output cable, ground-drag usable
Three frequencies: 45Hz, 50Hz, 55Hz
2. Capacity: 1500VA
3. Accuracy: tgδ: ±(reading*1.0%+0.08%)
Cx: ±(reading*1.5%+5PF)
4. Resolution: tgδ: 0.01% Cx: 1pF
5. Range: 0.1% < tgδ < 50%
3PF< Cx < 60000PF
At 10KV: Cx ≤30000PF
At 5KV: Cx ≤60000PF
6. Power: AC220V±10%, 50±1Hz
7. Harmonic: ≤3%
8. Operating: -15C~50C, RH<80%
9. Dimensions: 460(L)×335(W)×340(H)
10. Weight: 30 kg
Working Principle
PID ramps HV. FFT filters, vector calculates C and tgδ. Multiple measurements, median selected. Gradual ramp down.
Under AC voltage, dielectrics consume power as heat. Phase difference Ψ between V and I, complement δ is D/L angle, tgδ measures D/L. Circuit has std loop (Cn) and test loop (Cx). MCU samples, vector calculates C and tgδ.
Built-in anti-interference for accurate measurement under external E-field.
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
