Dielectric Loss Tester
Product Introduction:
Dielectric Loss Tester突破了传统的电桥测量方式VFD tech, MCU, auto conversion. 45/55Hz sine wave, up to 10kV, 50Hz filter. For transformer, CT/PT, bushing, capacitor, arrester D/L measurement.
Technical Specifications:
Accuracy: Cx ±(reading×1%+1pF)
tgδ: ±(reading×1%+0.00040)
Anti-interference: VFD, maintains accuracy under 200% interference
Capacitance range: internal HV: 3pF-60000pF/10kV, 60pF-1μF/0.5kV
External HV: 3pF-1.5μF/10kV, 60pF-30μF/0.5kV
Resolution: max 0.001pF, 4 digits
tgδ range: unlimited, res 0.001%, auto C/L/R ID.
Test current: 10μA-1A
Internal HV: set range 0.5-10kV
Max output current: 200mA
Ramping: continuous smooth adjustment
Test frequency: 45, 50, 55, 60, 65Hz single
45/55Hz, 55/65Hz, 47.5/52.5Hz auto dual VFD
Frequency accuracy: ±0.01Hz
External HV: max 1A at 40-70Hz for normal wiring
Max test current 10kV/1A at 40-70Hz for reverse wiring
CVT self-excitation LV output: 3-50V, 3-30A
Test time: ~40s, depends on mode
Input Power: 180-270VAC, 50Hz@1%, mains or generator
Computer interface: standard RS232
Printer: Weihuang A7 thermal micro printer
Ambient Temp: -10C to 50C
RH: <90%
Dimensions: 460x360x350mm
Weight: 28kg
Dielectric Loss Tester特征：
1. Uses complex current method for C, D/L measurement. High accuracy, easy automation.
2. Uses VFD tech to eliminate 50Hz interference, reliable under strong EM interference.
3. Large LCD with Chinese menu prompts for intuitive operation.
4. Easy operation, microcomputer controlled. Auto measurement after selecting mode.
5. Integrated design with std capacitor and HV supply for field use.
6. High accuracy for oil D/L measurement with std oil cup and test leads.
7. CVT self-excitation test, one measurement for C1, C2 capacitance and D/L.
8. Reverse test uses ivddv tech, eliminating unstable reverse data.
9. Reverse wiring low-voltage shielding function: performs non-disconnection 10kV reverse wiring dielectric loss measurement on C11 under 220kV CVT bus grounding conditions.
10. High-voltage dielectric loss measurement function: capable of conducting dielectric loss tests exceeding 10kV using high-voltage transformers or series resonance.
12. Ground protection: no HV without proper grounding. Overcurrent protection: safe during short circuit or breakdown.
13. Electric shock protection: instantly cuts HV if operator is shocked.
Precautions
1. Ground terminal must be reliably grounded.
2. Only safe when power off and selector at "Off".
3. Do NOT operate voltage selector during measurement.
4. Normal wiring: UH is HV. Reverse wiring: IX is HV. Keep HV cables at safe distance from ground.
5. Replace fuse only with specified rating (internal: 0.5A).
6. Use manufacturer-supplied cables for accuracy.
