Manual Part 7
1 Product O verview
The PSU DC converts incoming voltage ranging from -39 to - 72 V DC to the
regulate d DC voltage of 27.2 V DC. The maximum output power i s 1200 W.
1.1 Main Functions
The PSU DC has the fo llowing functions:
• Communicates with the Distribution Switch Un it (DXU)
• Indicates alarms
2 Dimensions
The physic al characteristics of the PSU DC are shown in the table below.
Table 1 PSU D C Dimensions
Heigh t Width Depth Weight
262 mm 61 mm 225 mm 3.1 kg
3 Power Consum ption and Heat Genereat ion
The power consumption and heat generation are sh own in the table below.
Table 2 Power Consumption and Heat Ge neration
Max. Power Consumption Max. Heat Generation
1411 W 211 W
4 Function D escription
The PSU DC consists of the following main units:
• Input filter [ElectroMagnetic Co mpatibility (EMC) filter]
• DC/DC converter
• Output filter (EMC filter)
• Control and supervision circui ts
3 (6)
EN/LZT 720 0248 Uen R2A