User manual for the GSM three‑phase phase volt‑ampere meter, covering safety, specifications, operation and battery management.
The GSM three‑phase phase volt‑ampere meter is a multifunctional handheld instrument designed for on‑site testing of AC voltage, current and phase relationships. It features a large 70 mm×62 mm LCD with backlight, high‑precision measurement ranges, and automatic shutdown to conserve battery life.
The manual provides safety guidelines, detailed specifications, step‑by‑step operating procedures for phase, voltage and current measurements, as well as battery replacement and maintenance instructions. A packing list and wiring reference diagram are also included. This manual is written in Chinese.
| Voltage measurement range | 0–600 V |
|---|---|
| Phase measurement range | 0–360° |
| LCD display size | 70 mm × 62 mm |
| Power source / Battery | DC 9 V, six 1.5 V AA alkaline batteries |
| Sampling rate | ≈3 samples per second |
| Input impedance (voltage) | 2 MΩ (general), 40 kΩ for U1U2 phase measurement |
The device operates from –10 °C to 40 °C.
Approximately 300 hours of continuous operation.
It is powered by a 9 V DC supply from six 1.5 V AA alkaline batteries.
The input impedance is 2 MΩ for the voltage channels, and 40 kΩ when measuring the U1‑U2 phase.