Ericsson RBS 2206 - 19 Unit Description, IDM; Functions; External Interfaces

Unit Description, IDM
19 Unit Description, IDM
This chapter describes the internal Distribution Module that distributes
+24 V DC to all DC powered units in the RBS. Distribution circuits are
protected by circuit breakers.
The IDM consists of a unit with 21 circuit breakers, four PSU cables
and connectors to the different DC powered units.
19.1 Functions
The IDM has the following functions:
•
Distributes power to all DC powered units.
• Provides fused power distribution to the DC powered units.
• Provides a manual connect or disconnect function of all DC
powered units.
•
Monitors the system voltage (+24 V DC).
19.2 External Interfaces
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Figure 117 The IDM
The IDM has the following external interfaces:
• Four PSU cables
• Battery connection (positive)
• Battery connection (negative) and earth connection
• System voltage test port
• ESD wrist-strap connector
• Power distribution connectors (see table below)
EN/LZT 720 0008 P2A
2001-11-28
211 (485)
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Preliminary