3
3.9 Voltage collector integrated local display (128 × 64 dot matrix OLED LCD screen) and phase
sequence checking function can display three-phase full voltage, voltage fundamental wave, three,
five and seven times harmonic RMS, system frequency values and three-phase voltage phase
difference. It is easy for field testers to quickly check the connection between the voltage collector
and PT secondary voltage output terminal and the parameters of the three-phase voltage.
3.10 The voltage collector adopts double digital isolation technology, which is more securer and
reliable.
3.11 AC and DC: built-in lithium battery power supply or 220V AC charger power supplyself-adaptively.
3.12 With the built-in high-capacity rechargeable lithium battery inside the host and the voltage
collector, the instrument can continuously work for 8 hours after a complete charge.
3.13 Intelligent battery management: the remaining power display, low power alarm, long idle reminder
and backlight automatic regulation.
3.14 Built-in real-time clock can display the current time and date,and automatically record the test
date and time.
3.15 The test data storage is divided into native storage and U Disk storage. The native storage can
store 100 test data, and those date can be transferred into the U disk. U disk storage can save
the test data and waveform pictures, with the test data in TXT format and the waveform picture in
BMP format,which can be edited and printed directly on the computer.
3.16 The selected externalthermalprinter can print test data and the saved test record, and the printed
content can be selected so as to save the paper.
4.Technical Index
4.1 Reference Voltage Measurement
4.1.1
Reference voltage input range: 25V
～
250V RMS,50Hz/60Hz
4.1.2
accuracy of reference voltage measurement: ± (reading × 5% + 0.2V)
4.1.3
accuracy of voltage harmonic measurement: ± (reading × 10%)
4.1.4
reference voltage channel input resistance: ≥1500kΩ
4.2 Current Measurement
4.2.1
Whole current measurement range: 0
～
20mA RMS,50Hz/60Hz
4.2.2
Accuracy: ± (reading × 5% + 5uA)
