Power Supply Systems
Outdoor Integrated Power System (DYX-3000 / DYX-6000)
ZTT DYX-3000 and DYX-6000 are high-efficiency integrated power supplies designed for distributed micro base stations. Each unit integrates rectifying, monitoring & communication, power distribution and surge protection in a compact aluminium shell with heatsink — no additional cooling device is required. Wide 90 – 280 Vac input, expandable up to 4 units in parallel, IP65, multiple installation methods (wall / pole / ground). Used in combination with the 4850Y 48 V 50 Ah Li-ion battery with built-in BMS as backup. Compared to a traditional air-conditioned cabinet the integrated power supply reduces construction cost by about 45 % (≈ US$277 / station) and eliminates the air-conditioner load (≈ US$154 / station).

Features & Characteristics
- ▪Small-sized and light-weighted, high power density, natural self-cooling design.
- ▪Wide input range 90 – 280 Vac; easy pluggable wiring.
- ▪Expandable up to 4 units in parallel (current-sharing unbalance < 5 % at ≥ 50 % load).
- ▪Output disconnection by time or voltage setting.
- ▪IP65 protection with multiple installation methods (wall-mounted, pole-mounted, ground-standing).
- ▪Integrates rectifying, monitoring, power distribution and surge protection in one aluminium case.
- ▪Maintenance-free, high reliability, low carbon emission.
Applications
- ▪Small and medium-size communication base stations (macro and micro).
- ▪Indoor and outdoor walls, subways, tunnels, shafts and other sites with limited installation space.
- ▪Distributed micro base-station retrofits replacing traditional air-conditioned cabinets.
Technical specifications
- Rated input voltage
- 220 Vac, single-phase three-wire
- Input voltage range
- 90 – 280 Vac (90 – 176 Vac: output voltage derating)
- Input frequency
- 45 – 65 Hz
- Power factor
- ≥ 0.99 @ 220 Vac, 100 % load
- THD
- ≤ 5 % @ 220 Vac, 100 % load
- Rated output voltage
- 53.5 ± 0.5 Vdc (adjustable 43 – 58 Vdc)
- Output efficiency
- ≥ 96 %
- Parallel operation
- Up to 4 units, current-sharing unbalance < 5 % @ ≥ 50 % load
- Operating temperature
- -40 °C to +55 °C
- Storage temperature
- -40 °C to +80 °C
- Relative humidity
- ≤ 95 %, non-condensing (40 ± 2 °C)
- Altitude
- 0 – 3000 m (≥ 3000 m output voltage derating)
- Ingress protection
- IP65
- Heat dissipation
- Natural, heatsink aluminium shell
- Shock & vibration
- Earthquake resistant up to intensity 9
Unit variants
| Model | Rated power | Rated output | Max output current | Input current max | Dimensions (W × D × H) | Weight |
|---|---|---|---|---|---|---|
| DYX-3000 | 3000 W | 53.5 Vdc / 56.2 A | 62.5 ± 1 A | 20 A | 385 × 277 × 70 mm | ≤ 8 kg |
| DYX-6000 | 6000 W | 53.5 Vdc / 112.15 A | 125 ± 2 A | 38 A | 440 × 350 × 103 mm | ≤ 16 kg |
| 4850Y (Li-ion backup) | 48 V / 50 Ah battery with built-in BMS | — | — | — | 425 × 185 × 310 mm | ≈ 28 kg |
Comparison — traditional air-conditioning cabinet vs integrated power supply
| Aspect | Traditional AC cabinet | Integrated power supply |
|---|---|---|
| Function | Air conditioner, power supply and PDU installed separately | Rectifying, DC distribution, remote management and self-cooling in one aluminium case |
| Dimension | 900 × 900 × 2000 mm | 3 kW: 385 × 277 × 70 mm / 8 kg — 6 kW: 440 × 350 × 103 mm / 16 kg |
| Installation | Cabinet, power supply and batteries installed one by one — high labour cost | 1 personnel in 1 hour — construction cost reduced by ≈ 45 % (≈ US$277 / station) |
| Maintenance | AC needed; fan-cooling power supply | No AC, self-cooling power supply — electricity cost reduced ≈ US$154 / station |
| Application | Ground installation only | Wall, pole, flat-roof or ground — indoor and outdoor |
Protective features (DYX-3000 / DYX-6000)
| Function | DYX-3000 | DYX-6000 |
|---|---|---|
| Input under-voltage protection / recovery | 80 ± 5 Vac / 100 ± 5 Vac | 80 ± 5 Vac / 100 ± 5 Vac |
| Input over-voltage protection / recovery | 290 ± 5 Vac / 270 ± 5 Vac | 290 ± 5 Vac / 270 ± 5 Vac |
| Output over-voltage protection | ≥ 58 Vdc | ≥ 59 Vdc |
| Output under-voltage protection | ≤ 42 Vdc | ≤ 42 Vdc |
| Output over-current protection | 62.5 ± 2 A | 126 ± 2 A |
| Over-temperature protection / recovery | 85 ± 5 °C / 75 ± 5 °C | 105 ± 5 °C / 85 ± 5 °C |
| Short-circuit protection | Sustainable for long period | Sustainable for long period |
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