This manual provides safety rules, installation steps, specifications, operation, calibration and maintenance for the Extech 6900 Series AC power supply.
The Extech 6900 Series AC power supply manual introduces the device, defines symbols and safety signs, and explains technical terminology. It emphasizes safety regulations, including the need for proper grounding, qualified personnel, and protective clothing, and outlines the warranty and service conditions.
The document details installation procedures, product specifications (input voltage, frequency, power rating, output range, accuracy, protection features), operation instructions, calibration steps for current and power, and recommended maintenance. It also includes wiring recommendations for DC output and guidance on fuse replacement and environmental limits. This manual is written in Chinese.
| Input Voltage | 110/220 Vac ±10% |
|---|---|
| Frequency | 50 / 60 Hz |
| Power Rating | 500VA – 4000VA (model dependent) |
| Output Voltage Range | 0‑150 V |
| Total Harmonic Distortion (THD) | < 0.5% |
| Voltage Accuracy | ±(1% of setting + 2 counts) |
| Frequency Accuracy | ±0.03% of setting |
| Power Accuracy | ±(2% of reading + 2 counts) |
| Efficiency | ≥ 80% at full load |
| Protection Features | Over Power, Over Current, Over Voltage, Over Temperature |
The power supply can be set to either 110 V or 220 V input voltage using the selectable switch.
The manual recommends a thorough inspection and calibration at least once per year.
Replace the input fuse with the correct specification as listed in the product specifications; do not use a different rating.