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- Input Voltage Range: Operates from a -48 VDC input source, supporting a range of 40–57 VDC, ensuring compatibility with standard telecom and industrial DC power systems.
- Output Power: Delivers a maximum total output of 250 W, distributed across multiple voltage rails for diverse load requirements.
- Output Channels:
- +5 V at up to 25 A
- +12 V at up to 8 A
- -5 V at up to 1 A
- -12 V at up to 1 A
- Form Factor: PS/2 type enclosure, compact and standardized for integration into existing systems.
- Efficiency and Stability: Designed for high conversion efficiency and low ripple, ensuring stable operation of sensitive electronic components.
- Safety and Compliance: Certified under VDE, UL, TÜV, CSA, and CE standards, guaranteeing adherence to international safety and performance regulations.
- Thermal Management: Optimized internal layout for effective heat dissipation, supporting continuous operation under demanding conditions.
- Industrial Durability: Built with robust materials and components to withstand harsh environments and extended operational cycles.
- Output Power: Delivers a maximum total output of 250 W, distributed across multiple voltage rails for diverse load requirements.
- Output Channels:
- +5 V at up to 25 A
- +12 V at up to 8 A
- -5 V at up to 1 A
- -12 V at up to 1 A
- Form Factor: PS/2 type enclosure, compact and standardized for integration into existing systems.
- Efficiency and Stability: Designed for high conversion efficiency and low ripple, ensuring stable operation of sensitive electronic components.
- Safety and Compliance: Certified under VDE, UL, TÜV, CSA, and CE standards, guaranteeing adherence to international safety and performance regulations.
- Thermal Management: Optimized internal layout for effective heat dissipation, supporting continuous operation under demanding conditions.
- Industrial Durability: Built with robust materials and components to withstand harsh environments and extended operational cycles.
1. Product Overview
Product Name: NT-48V250W
Model Number: NT-48V250W
Series: Industrial DC Power Supply Series
Article Number: NT-48V250W
Manufacturer: [Manufacturer not specified; typically supplied under the NT industrial power systems line]
The NT-48V250W is a high-performance industrial-grade DC power supply designed for systems requiring a -48 VDC input and multiple regulated DC output rails. Engineered for reliability, efficiency, and compliance with international safety standards, this unit provides a total output capacity of up to 250 watts. It is built in a PS/2 form factor, making it compatible with a wide range of industrial, telecommunications, and computing applications that demand stable multi-voltage DC outputs.
2. Key Features
- Input Voltage Range: Operates from a -48 VDC input source, supporting a range of 40–57 VDC, ensuring compatibility with standard telecom and industrial DC power systems.
- Output Power: Delivers a maximum total output of 250 W, distributed across multiple voltage rails for diverse load requirements.
- Output Channels:
- +5 V at up to 25 A
- +12 V at up to 8 A
- -5 V at up to 1 A
- -12 V at up to 1 A
- Form Factor: PS/2 type enclosure, compact and standardized for integration into existing systems.
- Efficiency and Stability: Designed for high conversion efficiency and low ripple, ensuring stable operation of sensitive electronic components.
- Safety and Compliance: Certified under VDE, UL, TÜV, CSA, and CE standards, guaranteeing adherence to international safety and performance regulations.
- Thermal Management: Optimized internal layout for effective heat dissipation, supporting continuous operation under demanding conditions.
- Industrial Durability: Built with robust materials and components to withstand harsh environments and extended operational cycles.
3. Technical Specifications
- Input Voltage: -48 VDC nominal (operational range: 40–57 VDC)
- Maximum Input Current: 8 A (at full load)
- Total Output Power: 250 W maximum
- Output Voltages and Currents:
- +5 VDC / 25 A (125 W max)
- +12 VDC / 8 A (96 W max)
- -5 VDC / 1 A (5 W max)
- -12 VDC / 1 A (12 W max)
- Form Factor: PS/2 type power supply
- Dimensions: 150 mm (L) × 140 mm (W) × 86 mm (H)
- Weight: [Not specified; typically ~1.2–1.5 kg for PS/2 units of this rating]
- Cooling: Forced-air or convection cooling depending on system integration
- Material: Metal chassis with protective coating for EMI shielding and mechanical durability
- Connectors: Standard PS/2 power connectors for output distribution; DC input terminals for -48 VDC source connection
- Operating Temperature Range: [Not specified; typical range for similar units: 0°C to +50°C]
- Storage Temperature Range: [Typically -20°C to +70°C]
- Humidity: [Typically 10–90% non-condensing]
4. Functionality
The NT-48V250W functions as a DC-to-DC converter, transforming a -48 VDC input—common in telecommunications and industrial power infrastructures—into multiple regulated DC output voltages suitable for powering electronic circuits, control systems, and computing hardware.
Operation Principle:
- The input stage accepts a -48 VDC supply and conditions it through filtering and protection circuits.
- The internal conversion stage uses high-frequency switching technology to generate stable +5 V, +12 V, -5 V, and -12 V outputs.
- Each output rail is independently regulated to maintain voltage stability under varying load conditions.
- Built-in protection mechanisms safeguard against overcurrent, overvoltage, and thermal overload.
Use Cases and Applications:
- Telecommunications Equipment: Ideal for systems powered by -48 VDC central office supplies.
- Industrial Control Systems: Provides multiple voltage rails for sensors, controllers, and logic circuits.
- Embedded Computing: Suitable for rack-mounted or embedded computing systems requiring PS/2 form factor power supplies.
- Networking Devices: Powers routers, switches, and communication modules in DC-powered environments.
- Instrumentation and Measurement Systems: Supplies stable voltages for precision electronics.
Compatibility:
- Compatible with standard PS/2 power supply mounting and connector configurations.
- Designed for integration into systems using -48 VDC infrastructure, common in telecom and data center environments.
5. Components & Accessories
Included Components:
- NT-48V250W power supply unit
- Integrated PS/2 output connector harness (depending on configuration)
- Input terminal block or cable for -48 VDC connection
- User documentation or datasheet (if provided by manufacturer)
Optional Accessories:
- Mounting brackets or rails for rack or chassis installation
- Input/output cable assemblies for custom integration
- Protective covers or EMI filters for enhanced compliance
- Monitoring modules (if supported by system design)
Connectors:
- Input: Screw terminal or plug-in connector for -48 VDC input and return line
- Output: Standard PS/2 multi-pin connector providing +5 V, +12 V, -5 V, and -12 V outputs
- Grounding: Chassis ground terminal for safety and EMI suppression
6. Installation & Setup
Requirements:
- Input power source: -48 VDC nominal (40–57 VDC range)
- Adequate ventilation or cooling to maintain safe operating temperature
- Proper grounding to comply with safety and EMC standards
Mounting Options:
- PS/2 form factor allows direct installation into compatible chassis or enclosures
- Can be mounted horizontally or vertically depending on airflow design
- Secured using standard mounting screws or brackets
Configuration Steps:
1. Verify input voltage and polarity before connection.
2. Connect the -48 VDC input to the designated terminals.
3. Attach output connectors to the system load, ensuring correct voltage rail mapping.
4. Confirm grounding and shielding connections.
5. Power on the system and verify output voltages under no-load and full-load conditions.
6. Monitor for stable operation and absence of abnormal noise or heat.
Safety Precautions:
- Ensure all connections are made with power off.
- Observe polarity to prevent damage.
- Maintain clearance around ventilation openings.
- Follow manufacturer’s installation guidelines for compliance with UL, CE, and other certifications.
7. Performance & Capabilities
Power Output:
- Delivers up to 250 W total combined output power.
- High current capability on +5 V rail (25 A) supports logic circuits and digital loads.
- +12 V and negative rails provide auxiliary power for analog, control, or interface circuits.
Efficiency:
- Designed for high conversion efficiency typical of industrial-grade DC-DC converters (estimated 80–85%).
- Low ripple and noise ensure stable operation of sensitive electronics.
Load Regulation:
- Maintains output voltage within tight tolerances under varying load conditions.
- Independent regulation for each output rail minimizes cross-regulation effects.
Protection Features:
- Overcurrent protection (OCP) on each output rail.
- Overvoltage protection (OVP) to prevent damage to connected devices.
- Thermal shutdown or derating under excessive temperature conditions.
- Short-circuit protection with automatic recovery.
Reliability:
- Designed for continuous 24/7 operation in industrial and telecom environments.
- Mean Time Between Failures (MTBF) typically >100,000 hours (estimated for similar units).
Limitations:
- Requires stable -48 VDC input; not suitable for AC mains operation.
- Output power limited to 250 W combined across all rails.
- Operating temperature and derating may apply in high ambient conditions.
8. Standards & Compliance
The NT-48V250W meets multiple international safety and performance standards, ensuring suitability for global deployment in regulated industries.
Certifications:
- VDE: Compliance with German safety standards for electrical equipment.
- UL (Underwriters Laboratories): Certified for safety in North American markets.
- TÜV: Tested for compliance with European safety and quality requirements.
- CSA (Canadian Standards Association): Approved for use in Canadian installations.
- CE Marking: Conforms to European Union directives for safety, EMC, and environmental compliance.
Regulatory Compliance:
- Meets low-voltage directive (LVD) and electromagnetic compatibility (EMC) requirements.
- Designed in accordance with IEC/EN 60950 or IEC/EN 62368 safety standards for information technology equipment.
- RoHS compliance (assumed for modern production) ensuring restriction of hazardous substances.
Industry Standards:
- Compatible with telecom -48 VDC power distribution systems.
- PS/2 mechanical standard for form factor and connector layout.
9. Additional Information
Warranty:
- Typical warranty coverage: 1–3 years depending on manufacturer policy.
- Covers defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation available upon request, including datasheets and wiring diagrams.
- Customer support for installation, configuration, and troubleshooting.
Maintenance:
- Minimal maintenance required; periodic inspection recommended for connectors and ventilation.
- Ensure dust-free operation and adequate airflow to maintain thermal performance.
- Replace unit if output instability or excessive noise is observed.
Firmware/Updates:
- As a hardware-based DC power supply, no firmware updates are typically required.
- Design revisions may be issued by the manufacturer for improved efficiency or compliance.
Serviceability:
- Field-replaceable unit (FRU) design for quick swap in modular systems.
- Standardized connectors simplify replacement and minimize downtime.
Environmental Considerations:
- Designed for energy-efficient operation.
- Compliant with environmental and safety directives for industrial electronics.
- Suitable for use in controlled indoor environments.
### Summary
The NT-48V250W is a robust, multi-output DC power supply optimized for -48 VDC input systems. Delivering up to 250 watts of total output power across +5 V, +12 V, -5 V, and -12 V rails, it provides the versatility required for complex electronic systems. Its PS/2 form factor ensures compatibility with standard enclosures, while certifications from VDE, UL, TÜV, CSA, and CE confirm adherence to international safety and performance standards.
Engineered for telecommunications, industrial control, and embedded computing applications, the NT-48V250W combines high efficiency, stable regulation, and comprehensive protection features. Its compact design, ease of installation, and compliance with global standards make it a dependable choice for DC-powered infrastructures requiring reliable, multi-voltage output performance.
Product Name: NT-48V250W
Model Number: NT-48V250W
Series: Industrial DC Power Supply Series
Article Number: NT-48V250W
Manufacturer: [Manufacturer not specified; typically supplied under the NT industrial power systems line]
The NT-48V250W is a high-performance industrial-grade DC power supply designed for systems requiring a -48 VDC input and multiple regulated DC output rails. Engineered for reliability, efficiency, and compliance with international safety standards, this unit provides a total output capacity of up to 250 watts. It is built in a PS/2 form factor, making it compatible with a wide range of industrial, telecommunications, and computing applications that demand stable multi-voltage DC outputs.
2. Key Features
- Input Voltage Range: Operates from a -48 VDC input source, supporting a range of 40–57 VDC, ensuring compatibility with standard telecom and industrial DC power systems.
- Output Power: Delivers a maximum total output of 250 W, distributed across multiple voltage rails for diverse load requirements.
- Output Channels:
- +5 V at up to 25 A
- +12 V at up to 8 A
- -5 V at up to 1 A
- -12 V at up to 1 A
- Form Factor: PS/2 type enclosure, compact and standardized for integration into existing systems.
- Efficiency and Stability: Designed for high conversion efficiency and low ripple, ensuring stable operation of sensitive electronic components.
- Safety and Compliance: Certified under VDE, UL, TÜV, CSA, and CE standards, guaranteeing adherence to international safety and performance regulations.
- Thermal Management: Optimized internal layout for effective heat dissipation, supporting continuous operation under demanding conditions.
- Industrial Durability: Built with robust materials and components to withstand harsh environments and extended operational cycles.
3. Technical Specifications
- Input Voltage: -48 VDC nominal (operational range: 40–57 VDC)
- Maximum Input Current: 8 A (at full load)
- Total Output Power: 250 W maximum
- Output Voltages and Currents:
- +5 VDC / 25 A (125 W max)
- +12 VDC / 8 A (96 W max)
- -5 VDC / 1 A (5 W max)
- -12 VDC / 1 A (12 W max)
- Form Factor: PS/2 type power supply
- Dimensions: 150 mm (L) × 140 mm (W) × 86 mm (H)
- Weight: [Not specified; typically ~1.2–1.5 kg for PS/2 units of this rating]
- Cooling: Forced-air or convection cooling depending on system integration
- Material: Metal chassis with protective coating for EMI shielding and mechanical durability
- Connectors: Standard PS/2 power connectors for output distribution; DC input terminals for -48 VDC source connection
- Operating Temperature Range: [Not specified; typical range for similar units: 0°C to +50°C]
- Storage Temperature Range: [Typically -20°C to +70°C]
- Humidity: [Typically 10–90% non-condensing]
4. Functionality
The NT-48V250W functions as a DC-to-DC converter, transforming a -48 VDC input—common in telecommunications and industrial power infrastructures—into multiple regulated DC output voltages suitable for powering electronic circuits, control systems, and computing hardware.
Operation Principle:
- The input stage accepts a -48 VDC supply and conditions it through filtering and protection circuits.
- The internal conversion stage uses high-frequency switching technology to generate stable +5 V, +12 V, -5 V, and -12 V outputs.
- Each output rail is independently regulated to maintain voltage stability under varying load conditions.
- Built-in protection mechanisms safeguard against overcurrent, overvoltage, and thermal overload.
Use Cases and Applications:
- Telecommunications Equipment: Ideal for systems powered by -48 VDC central office supplies.
- Industrial Control Systems: Provides multiple voltage rails for sensors, controllers, and logic circuits.
- Embedded Computing: Suitable for rack-mounted or embedded computing systems requiring PS/2 form factor power supplies.
- Networking Devices: Powers routers, switches, and communication modules in DC-powered environments.
- Instrumentation and Measurement Systems: Supplies stable voltages for precision electronics.
Compatibility:
- Compatible with standard PS/2 power supply mounting and connector configurations.
- Designed for integration into systems using -48 VDC infrastructure, common in telecom and data center environments.
5. Components & Accessories
Included Components:
- NT-48V250W power supply unit
- Integrated PS/2 output connector harness (depending on configuration)
- Input terminal block or cable for -48 VDC connection
- User documentation or datasheet (if provided by manufacturer)
Optional Accessories:
- Mounting brackets or rails for rack or chassis installation
- Input/output cable assemblies for custom integration
- Protective covers or EMI filters for enhanced compliance
- Monitoring modules (if supported by system design)
Connectors:
- Input: Screw terminal or plug-in connector for -48 VDC input and return line
- Output: Standard PS/2 multi-pin connector providing +5 V, +12 V, -5 V, and -12 V outputs
- Grounding: Chassis ground terminal for safety and EMI suppression
6. Installation & Setup
Requirements:
- Input power source: -48 VDC nominal (40–57 VDC range)
- Adequate ventilation or cooling to maintain safe operating temperature
- Proper grounding to comply with safety and EMC standards
Mounting Options:
- PS/2 form factor allows direct installation into compatible chassis or enclosures
- Can be mounted horizontally or vertically depending on airflow design
- Secured using standard mounting screws or brackets
Configuration Steps:
1. Verify input voltage and polarity before connection.
2. Connect the -48 VDC input to the designated terminals.
3. Attach output connectors to the system load, ensuring correct voltage rail mapping.
4. Confirm grounding and shielding connections.
5. Power on the system and verify output voltages under no-load and full-load conditions.
6. Monitor for stable operation and absence of abnormal noise or heat.
Safety Precautions:
- Ensure all connections are made with power off.
- Observe polarity to prevent damage.
- Maintain clearance around ventilation openings.
- Follow manufacturer’s installation guidelines for compliance with UL, CE, and other certifications.
7. Performance & Capabilities
Power Output:
- Delivers up to 250 W total combined output power.
- High current capability on +5 V rail (25 A) supports logic circuits and digital loads.
- +12 V and negative rails provide auxiliary power for analog, control, or interface circuits.
Efficiency:
- Designed for high conversion efficiency typical of industrial-grade DC-DC converters (estimated 80–85%).
- Low ripple and noise ensure stable operation of sensitive electronics.
Load Regulation:
- Maintains output voltage within tight tolerances under varying load conditions.
- Independent regulation for each output rail minimizes cross-regulation effects.
Protection Features:
- Overcurrent protection (OCP) on each output rail.
- Overvoltage protection (OVP) to prevent damage to connected devices.
- Thermal shutdown or derating under excessive temperature conditions.
- Short-circuit protection with automatic recovery.
Reliability:
- Designed for continuous 24/7 operation in industrial and telecom environments.
- Mean Time Between Failures (MTBF) typically >100,000 hours (estimated for similar units).
Limitations:
- Requires stable -48 VDC input; not suitable for AC mains operation.
- Output power limited to 250 W combined across all rails.
- Operating temperature and derating may apply in high ambient conditions.
8. Standards & Compliance
The NT-48V250W meets multiple international safety and performance standards, ensuring suitability for global deployment in regulated industries.
Certifications:
- VDE: Compliance with German safety standards for electrical equipment.
- UL (Underwriters Laboratories): Certified for safety in North American markets.
- TÜV: Tested for compliance with European safety and quality requirements.
- CSA (Canadian Standards Association): Approved for use in Canadian installations.
- CE Marking: Conforms to European Union directives for safety, EMC, and environmental compliance.
Regulatory Compliance:
- Meets low-voltage directive (LVD) and electromagnetic compatibility (EMC) requirements.
- Designed in accordance with IEC/EN 60950 or IEC/EN 62368 safety standards for information technology equipment.
- RoHS compliance (assumed for modern production) ensuring restriction of hazardous substances.
Industry Standards:
- Compatible with telecom -48 VDC power distribution systems.
- PS/2 mechanical standard for form factor and connector layout.
9. Additional Information
Warranty:
- Typical warranty coverage: 1–3 years depending on manufacturer policy.
- Covers defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation available upon request, including datasheets and wiring diagrams.
- Customer support for installation, configuration, and troubleshooting.
Maintenance:
- Minimal maintenance required; periodic inspection recommended for connectors and ventilation.
- Ensure dust-free operation and adequate airflow to maintain thermal performance.
- Replace unit if output instability or excessive noise is observed.
Firmware/Updates:
- As a hardware-based DC power supply, no firmware updates are typically required.
- Design revisions may be issued by the manufacturer for improved efficiency or compliance.
Serviceability:
- Field-replaceable unit (FRU) design for quick swap in modular systems.
- Standardized connectors simplify replacement and minimize downtime.
Environmental Considerations:
- Designed for energy-efficient operation.
- Compliant with environmental and safety directives for industrial electronics.
- Suitable for use in controlled indoor environments.
### Summary
The NT-48V250W is a robust, multi-output DC power supply optimized for -48 VDC input systems. Delivering up to 250 watts of total output power across +5 V, +12 V, -5 V, and -12 V rails, it provides the versatility required for complex electronic systems. Its PS/2 form factor ensures compatibility with standard enclosures, while certifications from VDE, UL, TÜV, CSA, and CE confirm adherence to international safety and performance standards.
Engineered for telecommunications, industrial control, and embedded computing applications, the NT-48V250W combines high efficiency, stable regulation, and comprehensive protection features. Its compact design, ease of installation, and compliance with global standards make it a dependable choice for DC-powered infrastructures requiring reliable, multi-voltage output performance.
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