The manual provides specifications, installation, operation, safety, maintenance, and troubleshooting for the Dahua DHDA-5KV A series high‑precision AC…
The DHDA-5KV A series is a high‑precision, fully automatic, wide‑range AC voltage stabilizer designed for 150‑300 V input and 220 V ±2 % output. It delivers up to 5 kVA with efficiency over 90 % and includes protective features such as over‑voltage, under‑voltage, and waveform distortion safeguards.
The document explains panel indicators, wiring connections, start‑up procedures, safety precautions, regular maintenance, and troubleshooting steps. Users are instructed to follow the wiring guidelines, allow a 5‑second delay after switching on the stabilizer, and observe the indicator lights for fault conditions. Maintenance notes and storage recommendations are also provided. This manual is written in Chinese.
| Input Voltage | AC 150 V – 300 V |
|---|---|
| Output Voltage | AC 220 V ± 2 % |
| Output Current | >23 A (max 50 % load) |
| Frequency | 50 Hz ± 5 Hz |
| Output Power | 5000 VA (220 V ±10 %) |
| Adjustment Time | ≈1 s (input change ±10 %) |
| Over‑voltage Protection | Cuts output when input >300 V or output >245 V / <185 V |
| Delay Output | ≈5 s |
Turn on the stabilizer’s “stabilizer” switch; after about 5 seconds the voltage meter will show the output voltage, then you can turn on the load.
The red over‑voltage light lights when the output voltage exceeds 245 V, and the protection circuit will cut the output.
Check whether the input voltage is too high causing protection, verify that all input connections are secure, and if the problem persists contact the manufacturer for repair.