I. Features of LYYB-3000 Arrester Resistive Current Tester
1) This device is a handheld operating instrument with a large Chinese display, easy operation, and reliable data testing.
2) Weighing only 0.5kg, it is significantly lighter than other similar instruments while offering more powerful functions.
3) Simultaneously tests the total current, resistive current, deflection angle, active power, capacitive current, and 3rd, 5th, 7th harmonic currents of three-phase arresters. It can also directly evaluate the performance of the arrester (excellent, good, fair, poor).
4) This instrument can use electric field induction or wireless transmission methods instead of PT secondary wiring.
5) This instrument can directly measure resistive current without connecting to PT secondary.
6) This instrument has multiple testing methods for convenience (PT, wireless, induction, no PT).
7) This instrument can test three phases simultaneously with automatic compensation, making it very convenient to use.
8) Equipped with an 8000mAh high-capacity lithium battery, it can work continuously for 36 hours on a single charge.
9) High-precision sampling and processing circuits, advanced Fourier harmonic analysis technology, ensuring more reliable data.
10) The LYYB-3000 Arrester Resistive Current Tester uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals.
Figure 1
Panel Description:
1---Reference voltage input terminal; 2---Antenna; 3---Measurement ground terminal;
5---Power switch; 6---Charging socket; 8---Leakage current input terminal;
9---LCD display; 10---Touch keyboard
Main Technical Parameters
Total current measurement range: 0~10mA RMS
Accuracy: ±(reading×5%+5uA)
Resistive current fundamental measurement accuracy (wired, excluding interphase interference): ±(reading×5%+5uA)
Current harmonic measurement accuracy: ±(reading×10%+10uA)
Current channel input resistance: ≤2Ω
Reference voltage input range: 25V~250V RMS
Accuracy: ±(reading×5%+0.5V)
Voltage harmonic measurement accuracy: ±(reading×10%)
Reference voltage channel input resistance: ≥1800kΩ
Battery continuous working time: more than 36 hours
Battery charging time: more than 5 hours
AC charger: AC 220V 10%, 50Hz 1%
Instrument dimensions: 25cm×5cm×13cm Instrument weight: 0.5kg (excluding cable box)
