Polyamp PU500 SERIES DC/DC Converter
The Polyamp PU500 Series DC/DC Converter is a reliable and efficient power solution for industrial, railway, and telecommunications applications. Designed to meet the demands of critical systems, it ensures consistent performance even in harsh environments. Key features include a wide input voltage range (18–300 V DC) and single output options f...
Read MoreThe Polyamp PU500 Series DC/DC Converter is a reliable and efficient power solution for industrial, railway, and telecommunications applications. Designed to meet the demands of critical systems, it ensures consistent performance even in harsh environments.
Key features include a wide input voltage range (18–300 V DC) and single output options from 24V to 60V DC, delivering power up to 500W with high efficiency exceeding 88%. It offers advanced protection mechanisms such as reverse input voltage protection and overvoltage protection, along with remote sense capabilities and an adjustable output voltage for precise system requirements.
The PU500 Series is fully encapsulated to meet IP20 standards, with an operating temperature range of -25°C to +70°C, ensuring reliable performance in extreme conditions. Its compact design supports wall or 19” rack mounting, providing flexibility for various installation scenarios. Compliance with EN50155 and IEC60571 standards makes it ideal for railway applications.
The Polyamp PU500 Series is the perfect choice for dependable, versatile, and energy-efficient DC/DC power conversion.
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Features
- 400W - 500W Industrial Converter
- Optimised input voltage ranges
- Input ranges from 18 to 300Vdc
- Single outputs from 24 to 60Vdc
- Reverse input voltage protection
- Fully encapsulated meets IP20
- Overvoltage Protection OVP
- Extra output with series diode
- Over/under voltage alarm with relay output
- Output voltage adjustable from front panel
- 19' Rack Mount or Wall Mount
Specifications
| INPUT | |
|---|---|
| Input voltages | 24Vdc: 18-32Vdc 48Vdc: 38-60Vdc 110Vdc: 88-150Vdc 220Vdc: 175-300Vdc |
| Reverse Input Protection | Inputs 24V, 48V, 72V with Parallel Diode Inputs 110V, 220V Thyristor |
| OUTPUT | |
|---|---|
| Output voltages | See Selection Table |
| Output current | See Selection Table |
| Source regulation | 0.001 |
| Load regulation | 0.2% (0 to 100% load) |
| Transient recovery | <3ms. 10 to 90% load step to within 3% of nominal output voltage |
| Output ripple | Typ 30mV (60kHz) |
| Input ripple | 150:1 attenuation on Output (50-400Hz) |
| Temperature coefficient | 0.02% per °C |
| Output adjustment | 95%-110% with 15 Turn potentiometer |
| Current limit | 105%, rectangular |
| Remote sense | Yes |
| Soft start | Yes |
| Startup time | 1 Sec |
| Holdup time | 2 - 25ms |
| OPERATING | |
|---|---|
| Efficiency | 88%–91% |
| Design topology | Push-pull |
| Switching frequency | 40kH |
| Overvoltage protection | Yes, 115% of nominal voltage |
| Isolation | Input / Output: 24, 48, 72, 2kVdc Input / Output: 10, 220, 2.5kVac, 4kVdc Input / Case: 24, 48, 72, 2kVdc Input / Case: 110, 220, 2.5kVac, 4kVdc Output / Case: < 75Vdc output, 2kVdc Output / Case: > 75Vdc output, 2.5kVac, 4kVdc |
| ENVIRONMENTAL | |
|---|---|
| Operating Temperature | -25C to +55C (100% load) +55C to +70C (with derating |
| Temperature coefficient | 0.02%./C |
| Storage temperature | -40°C to 85°C. |
| Cooling | Convectional cooling. |
| FEATURES | |
|---|---|
| Overvoltage protection OVP | The output voltage is limited to 15% over nominal output voltage by a extra regulated circuit |
| Voltage Sense | External output voltage sense used when the voltage regulation at the load is critical. The sense can compensate voltage drops up to 5% of the nominal voltage |
| Remote sense | External sense is used when the voltage regulation at the loa is critical. The sense can compensate voltage drops up to 5% of nominal voltage |
| Voltage Alarm | Over / Under voltage alarm built in relay changes state if converter output voltage is not with 90% to 115% of nominal output. User selects NO or NC relay function. The relay is rated 30V 0.5A |
| Inhibit input / Power down | This input allow remote start and shutdown of the converter by a signal voltage of 5 to 12V. Max 35mA |
| OPTIONAL FEATURES | |
|---|---|
| Series Diode | Use the series diode output when the output is connected in parallel with other power supplies to achived redundancy. The output current is derated with 10% on 24 to 48V outputs. |
| Conformally coating | For environment with high non condensing humidity, max 98% RH |
| Inrush current | Inrush current limit with NTC, reduces the inrush current during start up. The input votlage range will be affected. Only available on C & D inputs. |
| Mounting Options | See Technical Illustrations |
| STANDARDS | |
|---|---|
| Safety standards | IEC60950, Low Voltage Directive |
| C-Tick | AS/NZS CISPR11 Group 1, Class A |
| EMC | EN IEC 61000-6-3, Emission EN IEC 61000-6-2, Immunity EN IEC 61000-4-4, 4kV EN IEC 61000-4-5 level 2 & 3 |
| MECHANICAL | |
|---|---|
| Dimensions | 232 x 210 x 86mm |
| Weight | 4.2kg |
| Mounting | See Technical Illustrations |
Selection Table
| MODEL NUMBER | INPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT CURRENT | POWER |
|---|---|---|---|---|
| PU500 24/24 | 18-32V | 24V | 16.7A | 400W |
| PU500 24/28 | 18-32V | 28V | 14.3A | 400W |
| PU500 24/36 | 18-32V | 36V | 11.2A | 400W |
| PU500 24/48 | 18-32V | 48V | 8.4A | 400W |
| PU500 24/60 | 18-32V | 60V | 6.7A | 400W |
| PU500 48/24 | 38-60V | 24V | 20.9A | 500W |
| PU500 48/28 | 38-60V | 28V | 17.9A | 500W |
| PU500 48/36 | 38-60V | 36V | 13.9A | 500W |
| PU500 48/48 | 38-60V | 48V | 10.5A | 500W |
| PU500 48/60 | 38-60V | 60V | 8.4A | 500W |
| PU500 110/24 | 88-150V | 24V | 20.9A | 500W |
| PU500 110/28 | 88-150V | 28V | 17.9A | 500W |
| PU500 110/36 | 88-150V | 36V | 13.9A | 500W |
| PU500 110/48 | 88-150V | 48V | 10.5A | 500W |
| PU500 110/60 | 88-150V | 60V | 8.4A | 500W |
| PU500 220/24 | 175-300V | 24V | 20.9A | 500W |
| PU500 220/28 | 175-300V | 28V | 17.9A | 500W |
| PU500 220/36 | 175-300V | 36V | 13.9A | 500W |
| PU500 220/48 | 175-300V | 48V | 10.5A | 500W |
| PU500 220/60 | 175-300V | 60V | 8.4A | 500W |
Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.
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