Functional Features of Zinc Oxide Arrester Live Tester
1. The instrument adopts a large-screen LCD display with full Chinese menu operation, making it easy to use.
2. High-precision sampling and processing circuits, advanced Fourier harmonic analysis technology, ensure more reliable data.
3. The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring data reliability and safety.
4. It has functions such as resistive current fundamental peak output and side-phase correction.
5. The instrument is equipped with a rechargeable battery, calendar clock, and micro printer, and can store 120 sets of measurement data.
Three-Phase Technical Specifications
1. Total current measurement range: 0-10mA RMS
Accuracy: ±(reading ×5% 5uA)
2. Resistive current fundamental measurement accuracy (wired, excluding inter-phase interference): ±(reading ×5% 5uA)
3. Current harmonic measurement accuracy: ±(reading ×10% 10uA)
Current channel input resistance: ≤2Ω
4. Reference voltage input range: 25V-250V RMS
Accuracy: ±(reading ×5% 0.5V)
5. Voltage harmonic measurement accuracy: ±(reading ×10%)
Reference voltage channel input resistance: ≥1800kΩ
6. Battery continuous working time: more than 8 hours
Battery charging time: more than 6 hours
7. AC charging: AC 220V 10%, 50Hz 1%
8. Instrument dimensions: 34cm×22cm×20cm
9. Instrument weight: 5kg
Three-Phase Test Methods
1. Wired: PT secondary method.
2. Induction plate method: The electric field induction method can be used instead of PT secondary wiring.
3. Single current method: (harmonic method) can directly measure resistive current without connecting PT secondary.
