Module Power Supply Fuse Selection
Due to the absence of a fuse within the module, a fuse is typically used externally for safety protection to comply with safety regulations. The fuse selected at 25°C conditions.The tube must meet the following conditions to ensure the fuse tube operates continuously and reliably:
IEC Specification: The rated current of the fuse tube, I_n = Steady-state current / 0.9
UL Specification: Rated Current of Fusing Tube In = Steady-State Current / 0.75
The fuse tube's current carrying capacity test is conducted under an environmental temperature of 25°C. The fuse tube's current carrying capacity is affected by the environmental temperature; the higher the temperature, the shorter the fuse tube's lifespan, and the lower its carrying capacity, especially in the DC-DC module power shell. Therefore, when selecting a fuse tube, the surrounding environmental temperature should be considered. Our company recommends a steady-state input current of 1.5-2.5 times. Additionally, the impact of startup or hot-plugging surge currents should be taken into account, as this is highly related to the peak and duration of the surge current. Surge currents are significantly greater than steady-state currents, so the impact of surge currents should be prioritized. You can directly measure this data using a DC current probe, observe the surge current waveform (pulsed current waveform), and calculate its energy by measuring the I2t value (Joule integral value) of the DC-DC module power supply. The size and frequency of surge currents have different effects on the fuse. The ratio of the I2t value of surge currents to the I2t value of a single pulse determines the number of times the fuse can withstand surge currents. We recommend this ratio to be less than 20%, theoretically capable of withstanding over 100,000 current surges. For environments with high environmental temperatures, avoid using self-resetting fuses.
Power module
Module power supplies are available in various installation types: pin-out, cable-out, terminal, and plug-and-play.
High quality and reliable
Modular power supplies are generally produced with full automation and equipped with advanced production technologies, ensuring stable and reliable quality.
Versatile application
Modular power supplies are widely used in various fields, including aerospace, rail vehicles, naval ships, power generation and distribution, postal and telecommunications, metallurgy and mining, automatic control, artificial intelligence, instrumentation, and scientific research experiments. They play an indispensable and crucial role, especially in high-reliability and high-technology fields.
Customized DC-DC Module Power Supply - DC-DC Module Power Supply - Provided by Beijing Boda Ruiyuan Technology Co., Ltd. (View). Beijing Boda Ruiyuan Technology Co., Ltd. specializes in "domestic power supplies, VPX power supplies, ATX rugged power supplies, CPCI heat-conducting power supplies." Adhering to the philosophy of "honest operation, dedicated service," we offer superior products and services. Please call for inquiries! Contact: Manager Chen.
