Compliance standards is ensured by a patented technology (EP 1 987 708, U.S. Patent Nr. 8,821,778 B2) of the Thermoselective Vacuum Encapsulation of the power supply units and the DC/DC converters. A ‘cemented joint’ is created between the electronics and the solid encapsulation material. The term ‘cemented joint’ originates from the licensing process for electric safety and describes the normative, proven durable and intractable capsulation. Ageing, heat, cold, rapid temperature changes or other environmental impacts are not to cause detachment, cracking or air pockets under any circumstances.
The thermal coupling of the components by the encapsulation material to the surface of the housing or base plate prevents the development of hotspots and economically guarantees a broadly homogenous temperature distribution in the power supply unit.
The high degree of efficiency and use of suitable materials for the housing guarantee to exceed the normative specifications for the touchable surfaces. A side effect of the technology used is a much higher IP degree of protection than similar encapsulated standard power supplies. The determining component finally is the interface to the outside relating to connecting the power supply to lines and loads.
The use of suitable plug connectors with a high IP degree of protection to the encapsulated power supply created power units permitting to be mounted locally where the power is needed. Protection against possible risks such as electric shock, fire or burning, mechanical damage or environmental effects is ensured by the power supply itself. The process of cooling the converter is achieved by thermal coupling through BPC (base-plate cooling) technology or –if needing– by adding a heat sink element.
Hence, all devices are especially designed to ensure the operational requirements under rough and critical conditions as well as complying with all the requirements and standards specific to railway operations. MTM Power® provides its customers the corresponding CoC´s for fire protection declaration, short reports of the DVT (design verification test) and on all railway operation products.