AC-DC power supply with inherent redundancy ensures high system reliability in critical applications
The PFC 3KR-E/110-3U3 rugged AC-DC power supply is designed for 3kW railway trackside applications that require redundant operation and power factor correction (PFC). The power supply uses field-proven PFH65F technology to deliver a solution with high system reliability and power efficiency.
The PFC 3KR-E/110-3U3 employs active power factor correction to convert 230Vac (195-264Vac operating range) to a 110Vdc/27A single output. Custom input/output voltages are available on request. The power supply complies with EN61000-3-2 and EN61000‐3‐12 directives for low input harmonic distortion. Power Factor is better than 0.97 at full load for the entire input range. An industrial quality version of this design, the PFC 3K-E/XX-3U3 series, is also available. This industrial power supply provides 24V, 48V, 110V, 125Vdc or custom output voltages.
The PFC 3KR-E/110-3U3 functions as a redundant power supply, ensuring high system reliability in critical applications. It is built with three PFH65F internal modules, connected parallel via built-in redundancy diodes. If one internal module fails, the system will remain operational at 2000W output power.
The AC-DC PFC-input power supply is designed for compliance with EN/UL60950-1 and equivalent safety standards. Filtering on the input and output contributes to low output ripple and noise. The input meets EN55032 Class A with wide margins; Class B is available as an option.
The power supply meets EN50155 for electronic equipment used on railway rolling stock. The units are equipped with heavy filtering on the input and output and comply with EN 50121-3-2. They also meet EN 50121-4, EN 61000-4-2 (ESD), EN 61000-4-3 (RF Immunity), EN 61000-4-4 (Fast Transients), and EN 61000-4-6 (Conducted Immunity). Electronic protection includes 4300Vdc input-output isolation, inrush current limiting, overload protection, thermal shutdown with automatic reset in case of insufficient cooling (self-resetting) and current limiting.
Cooling is by high quality built-in fans with which draw air into the unit, and by additional conduction via the baseplate which provide sufficient cooling for operation over a 0°C to +50°C temperature range for full specification without derating. Wider temperature ranges are available on request. All heat generating components are installed on aluminium heatsink blocks which are thermally connected to the base plate. This also ensures exceptional mechanical ruggedness.
The PFC 3KR-E/110-3U3 power supplies are heavily ruggedized for immunity to shock and vibration. The internal boards are conformal coated for protection from moisture and airborne contaminants.
ABSOPULSE Electronics is an original equipment manufacturer (OEM) of an extensive range of railway and industrial grade power conversion solutions. We specialize in fully custom solutions. All of our existing designs can also be modified to meet customer application requirements.
- 3000W railway quality AC-DC power supply;
- Complies with EN50155 for electronic equipment on railway rolling stock;
- Input: 230Vdc nominal, 195-264Vac operating range;
- Output: 110Vdc/27A or custom;
- Output options on industrial version: 24V, 48V, 110V, 125Vdc or custom;
- Active power factor correction (PFC) on input;
- Power factor meets EN61000-3-2 and and EN61000-3-12;
- Inherent redundancy – can be used as 2000W power supply;
- Conformal coated internal boards;
- 0°C to +50°C operating temperature range;
- EMI: EN50121-3-2;
- 3U3 chassis: 132 x 187 x 407mm (5.2” x 7.4” x 16”) H x W x D.
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