Manual Part 7

IDM
1 Product Overview
The IDM distributes +24 V DC to all DC powered u nits in the RBS. Distribution
circuits are protected by circu it bre akers.
1.1 Main Functions
The IDM consists of a unit with 21 circuit breakers, f our PSU cables and
connectors to the different DC powered units.
2 Dimensions
The physical characteristics of the IDM are shown in the table below.
Table 1 IDM Size and Weight
Height Width Depth Weight
133 mm 483 mm 80 mm 5 kg
3 Function Description
The IDM has the following external interfaces:
• Four Power Sup ply Units (PSU) cables
• +24 V DC c onnection (positive)
• +24 V DC connection (negative) and earth connection
• System v oltage t est port
• ESD wrist-strap c onnector
• Power distribution connectors, Table 4 on page 5
4 Interf ace
4.1 Signal and Power Interfaces
Input Data
The input data is shown in the table below.
3 (6)
EN/LZT 720 0247 Uen R2A