Industry: Cooling Technology
Application: Cooling Appliances
Power Solution: NMP-1K2 series
 
In the cold chain logistics industry, refrigerated totes play a crucial role in maintaining temperature-sensitive products during transportation and storage. A leading cooling solutions provider has developed actively-cooled totes that enhance fulfillment efficiency while eliminating the need for traditional refrigerants. These advanced totes ensure precise temperature control, improving cold chain reliability and sustainability.
 

 
CUSTOMER PAIN POINTS:
 

• Leakage Current Compliance: To meet Safety Regulator requirements for Appliance, the application requires a power supply with a leakage current of less than 0.75mA. Their previous power supply solution failed UL certification due to exceeding this limit, preventing them from moving forward with their product deployment.

• Compact High-Power Requirement: The application demands a power supply that delivers 1000W to 1500W while maintaining efficiency and reliability, all within a 1U height (41mm) constraint. Many high-power solutions exceed this height, making integration difficult and limiting available options.

 
 
POWER SOLUTION:
 
The NMP-1K2-KKKK##-10 modular power supply was recommended to address the customer's challenges. This solution effectively meets the customer's strict leakage current requirement of <0.75mA, ensures high power density within a 1U form factor, and provides flexibility with multiple output channels.

• Leakage Current Compliance: The NMP series maintains a leakage current of 0.4mA and a touch current of only 0.1mA, ensuring compliance with UL safety standards and resolving the certification failure issue faced with the previous power supply.

• Compact High-Power Design: The NMP-1K2 delivers up to 1200W in a 41mm (1U) height, making it an ideal fit for the customer's space-constrained application.

• Modular Flexibility: The recommended NMP-1K2-KKKK##-10 configuration provides four independent 48V/5A output channels, paralleled via a bus bar for simplified wiring. This allows for efficient load balancing and scalability to meet varying power demands.

 
 
CONCLUSION:
The NMP-1K2-KKKK##-10 provided a low-leakage, high-power, and space-efficient solution that met the customer’s strict UL compliance requirements. Its modular design allowed for flexible power configuration, while the compact 1U height ensured seamless integration into their refrigerated tote system. With stable performance and efficient cooling, the NMP series helped the customer achieve reliable and compliant power delivery for their application.