EVS Powers
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Power Supply Systems are designed for wireless broadband access, fixed-line applications, Internet backbone and datacenters. Our reliable, energy-efficient telecom power solutions protect against grid power interruptions and fluctuations and help operators reduce OPEX and their carbon footprint.
This model of Power Supply System is for communication, Output voltage -54V, Output current 0-60A; Its features include input over/under-voltage protection, output over-current protection, output over-voltage protection.
DC power supply, with the following features and functions:
| No. | Items | Technical Specifications / Requirements | Unit | Remarks |
|---|---|---|---|---|
| 1. Input Characteristics | ||||
| 1.1 | Input rated voltage | 220/380 | Vac | |
| 1.2 | Input voltage range | 220/380 | Vac | 100-400VDC |
| 1.3 | Input Current | ≤70 | A | Lowest input voltage, rated load |
| 1.4 | Input voltage frequency | 50/60 | Hz | |
| 1.5 | Power factor | ≥0.99 | Rated input voltage, rated load | |
| 2. Output Characteristics | ||||
| 2.1 | Output Rated Voltage | 110 | Vdc | |
| 2.2 | Output current range | 0—80 | A | Input voltage: 176—280Vac. |
| 0—40 | A | Input voltage: 90—175Vac. | ||
| 2.3 | Output voltage range | 110 | Vdc | |
| 2.4 | Efficiency | ≥93% | 220/380Vac input, output 110Vdc/80A | |
| 2.5 | Output ripple & noise | ≤200 | mVp-p | Rated load, frequency band is limited to 20MHz |
| 2.6 | Turn-on output delay | 3—8 | S | Vin=220Vac |
| 2.6b | Output rising time | ≤200 | mS | Output voltage rises from 10% to 90%, rated load. |
| 2.7 | Turn on/off overshoot | ≤±5 | %Vo | |
| 2.8 | Combined regulation | ≤±1% | ||
| 2.10 | Transient Response | Overshoot: ≤ ±5 %Vo | 5%—50%—25% or 50%—75%—50% load change. | |
| Recovery time: ≤ 200 µS | ||||
| 2.11 | Phone weighed noise voltage | ≤2 | mV | |
| 2.12 | p-pk value noise | ≤400mV | 0—300KHz | |
| 2.13 | Wide frequency noise voltage | ≤100 | mV | 3.4—150KHz |
| ≤30 | mV | 0.15—30000KHz | ||
| 2.14 | Disperse noise | ≤5 | mV | 3.4—150KHz |
| ≤3 | mV | 150—200KHz | ||
| ≤2 | mV | 200—500KHz | ||
| ≤1 | mV | 500—30000KHz | ||
| 3. Protection characteristics | ||||
| 3.1 | Output overvoltage protection | 150—156 | Vdc | Locked |
| 3.2 | Input overvoltage (0A output) | Protection point: ≥295 Vac | Overvoltage, cut output | |
| Protection tolerance: ≥5 Vac | The power module must be restarted when the input voltage recovers to 264Vac. | |||
| 3.3 | Input undervoltage protection point | Protection point: ≤80 Vac | Cut output | |
| Protection tolerance: ≥5 Vac | The power module must be restarted when the input voltage recovers to 90Vac. | |||
| 3.4 | Overtemperature protection | Yes | Auto-recover at environmental temperature 50°C | |
| 3.5 | Output overcurrent protection | 80 | A | 220VAC Input, Auto-recover |
| 3.6 | Output short-circuit protection | Yes | No damage with short-circuit for long time. | |
| 3.7 | Fan failure protection | Module operates with half-load when single fan fails. When two fans fail, the module turns off output after alarm. | (160W when 220Vac input, 120W when 110Vac input), and alarms until shutdown via overtemperature protection. | |
| 4. Battery Management Characteristics | ||||
| 4.1 | Floating charge current limiting | 20±1.5 | A | Adjustable |
| 4.2 | Battery undervoltage protection point | 80—85 | V | Cut load, protect battery |
| 5. Other Characteristics | ||||
| 5.1 | MTBF | 100,000 | H | |
