Liebert 1500 - Manual (Page 8)

2 Introduction
2.0 I NTRODUCTION
2.1 Description
The Helios DC System 4000/48 is a positive ground, -48 V DC nominal power system consisting of
one control and distribution cabinet and one or more rectifier cabinets. It is available in capacities
of 1500, 3000, 4000 and 6000 A. Auxiliary distribution cabinets can be added as required for addi-
tional distribution. Remote monitoring, temperature compensation and battery disconnect
options are also available. The 1500, 3000 and 4000 A versions use internal -48 V bussing and
external BR+ bussing, while the 6000 A version uses overhead bussing. Figure 1 shows a typical
bottom fed 4000 A system, while Figure 2 shows a typical 6000 A system.
Figure 1 Front view of a typical bottom fed 4000 A Helios DC System 4000/48 power system
Aux dist. cabinet Main cabinet 1200 A rectifier cabinets