KDW127/12 Mining Encapsulated and Intrinsically Safe DC Regulated Power Supply

KDW127/12 Mining Encapsulated and Intrinsically Safe Stabilized Power Supply

The KDW127/12 is a specialized power supply unit designed for use in hazardous environments, combining flameproof and intrinsically safe protection concepts. It is engineered to provide stable, safe electrical power to essential monitoring systems, communication devices, controllers, and sensors operating in underground coal mines or similar industrial areas with explosive gas or dust.

Its primary operation involves converting an unpredictable AC input, such as the common 127V AC mine power, into a precise, stabilized DC output, typically 12V DC. This conversion process is meticulously designed to meet intrinsic safety criteria, limiting voltage and current levels at the output port to prevent the possibility of ignition. This ensures connected devices can operate securely in explosive atmospheres.

Functional Principles and Key Technologies:

• Voltage Conversion and Protection Mechanism: Utilizes advanced AC/DC conversion technology to efficiently convert unstable mine AC power into a reliable, stabilized DC output. Integrated protection circuits safeguard against overvoltage, overcurrent, and short circuits, ensuring the output port always adheres to intrinsic safety standards.

• Intelligent Power Management: A built-in battery management system monitors parameters like battery voltage and charge/discharge status in real-time. When the external power grid is unavailable, the system automatically switches to battery power to maintain continuous, stable operation.

• Environmental Durability and Rugged Enclosure: Encased within a flameproof and intrinsically safe enclosure, the power supply provides strong resistance against humidity, dust, high temperatures, and corrosive environmental elements typical in underground mine operations.

The KDW127/12 can reliably power a wide variety of intrinsically safe devices, including:

• Mine-use monitoring cameras and communication systems.

• Sensors for temperature, pressure, airflow, gas concentration, and position.

• Programmable controllers and remote terminal units.

• Underground lighting systems.

Specifications and Parameters:

• Rated Output Voltage: Precisely stabilized at 12V DC.

• Rated Output Current: Capable of delivering up to 1.5A of current.

• Operating Temperature Range: Designed to operate effectively between 0°C and +40°C.

• Humidity: Capable of operating up to 95% relative humidity (at +25°C).

• Protection Rating: High-durability design with IP68 rating options.

• Explosion-proof Marking: The device is certified with comprehensive flameproof and intrinsically safe protection marks, such as "ExdⅠMb" and "ExiaⅠMb".