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The power supply for the system,with the following featuresand functions:
1、Input range 90-286Vac, 53.5Vdc output, PFC, Self contains MCU.
2、The parameter can be controlled by the supervisory monitoring unit through RS485.
3、It features input over/under voltage protection, output over current protection, output overvoltage protection, output short circuit protection, N+1 redundancy and current sharing.
4、It is in compliant with TUV .
1.3 Main specificationsModel | OutputVoltage（Vdc） | Output Current Range（A） | Output Voltage Range（Vdc） | Ripple(p-p) （Rated Load, Width Limited20MHz） |
EPA-A30H | 53.5 | 0—30 | 42—58 | 200mV |
2. Model definitions 2.1 Model comparison
External model | Internalmodels |
EPA-A30H | EPA-A30H |
3. PIN definition：
PIN | Signal | Remark |
A1、A2、B1、B2 | L | AC input |
A4、A5、B4、B5 | N | AC input |
A8 to A11 B8 to B11 | PE | Protection ground |
A13 to A21 | 48V+ | DC+ |
A22 | Pre-Charge | |
B13 to B22 | 48V- | DC- |
A23 | NC | |
A24 | NC | |
B23 | NC | |
B24 | NC | |
B25 | SHARE+ | Module current share |
A25 | NC | |
A26 | PS-enable | Before powermust beshorted to GND，make sure themoduleis enabled |
B26 | PS-present | |
A27 | GND | |
B27 | ADDR0 | Address line |
A28 | ADDR1 | |
B28 | ADDR2 | |
A29 | 5V+ | RS485 power+ |
A30 | 5VGND | RS485 power- |
B29 | RS485+ | Communication wire |
B30 | RS485- | Communication wire |
4. Environmental Conditions
No. | Items | Technical Specifications | Unit | Remarks |
1 | Operating Temperature | -33—+65 | ℃ | -40℃full load start up，+55~+65℃derating 20% in linearity. |
2 | Relative Humidity | 5—90 | % | No condensation |
3 | Altitude | 0-5000 | m | derate1℃with every 200 meters’ rising at 2000-5000m |
4 | Cooling | Forced cooling,Draw air from the front and exhausts heat from the behind and this module has temperature-sensing timing function. |
No. | Items | Technical Specifications | Unit | Remarks |
2 | Storage Temperature | -40—+70 | ℃ | |
3 | Relative Humidity | 5—95 | % | No condensation |
4 | Altitude | 0-5000 | m | derate1℃with every 200 meters’ rising at 2000-5000m |
4.3.1Input Characteristics
No. | Item | Technical Requirement | Unit | Remark | ||
1 | Rated input voltage | 200—240 | Vac | Max AC input voltage 310VAC(static state),no damage to the unit for long time | ||
AC Input voltage range | 90—290 | |||||
2 | Frequency | 45—65(typical 50/60) | Hz | |||
3 | PFC | ≥0.99 | Rated input, rated load | |||
4 | Power transformation point | 170-174 | Vac | The details refer to power transform characteristic curve diagram | ||
5 | Max input current | 15 | Low voltage full load | |||
6 | Inrush current | ≤30 | A | 264Vac | ||
4.3.2Output Characteristics
No. | Item | Technical Requirement | Unit | Remark | |||
1 | Output voltage range adjustable | 42—58 | Vdc | Operate through the monitoring unit (testing condition：empty load) | |||
2 | Rated output voltage | 53.5±0.5 | Vdc | Input220Vac | |||
3 | Output power | 1605 | W | 154—286Vacinput | |||
802 | W | 90—154Vac input | |||||
4 | Efficiency | ≥94% | 220Vac/rated load current | ||||
≥88% | 110Vac/rated load current | ||||||
5 | Temperature coefficient | ≤±0.02 | %/℃ | ||||
6 | Ripple and noise | ≤200 | mVp-p | Oscillograph band width is 20MHz.Parallel 10u+104 Capacitor with probe | |||
7 | Starting up output delay | 3—8 | S | ||||
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