Huawei MA5800 X7/X15/X17 DC connect power board The H901PILA board leads in 1 -48 V or -60 V DC power through 2 100 A OT terminals, and transfers the power to the protection circuit, then to the filter circuit, and finally to the backplane, supplying power to the service subrack and other boards. Functional Specifications The H901PILA board supports the following features and specifications: 1 -48 V or -60 V DC power input (input voltage range: -38.4 V to -72 V) Filtering and current-limiting for the power input port Detection of power input and protection fuse faults Protection alarm and board detection H901PILA Board Description The H901PILA board leads in one -48 V DC power through two 100 A OT terminals, and transfers the power to the protection circuit, then to the filter circuit, and finally to the backplane, supplying power to the service subrack and other boards. Features and Specifications The H901PILA board supports the following features and specifications: One -48 V DC power input Filtering and current-limiting for the power input port Power input detection and protection fuse fault detection Reporting of the protection alarm and board online signal Parameters Board Parameter You can query power consumption, weight, maximum frame size, and normal operating temperature of all boards. Table 1 lists the power consumption, weight, and maximum frame size of boards. The operating temperature of H901XSED and H901TWED is -40°C to +55°C (in MA5800–X17/X15/X7) or -40°C to +65°C (in MA5800–X2) and the lowest board startup temperature is -25°C. The operating temperature of other boards is -40°C to +65°C and the lowest board startup temperature is -25°C. NOTE: The power consumption of a board is calculated based on the following conditions: Operating voltage: -53.5 V DC. Ambient temperature: 25°C. Static power consumption: All ports do not carry any loads and optical modules are not installed on optical ports. Maximum power consumption: All ports fully carry loads. The board power consumption slightly varies with the power module configured for the board and discreteness of components. Table 1 Power consumption and maximum frame size of boards
