GE BUS1000 Instructions Manual page 29

5.3. MODULES
All the modules are identified by means of a number located in the front plate, which specifies its function
and characteristics.
The various configurations available in a bus protection system are carried out combining the number of
modular components requested in order to obtain the whole of the desired functions and the number of input
and output circuits requested. The BUS1000 is a flexible and modular system made up of the components
described below.
The different types of modules are:
NAME Description
DDF 1 pole, differential unit board
DAL 3 poles, alarm unit board
DDI Differential unit input module
DRD Differential unit output module
DFI 2 lines input module
DRS 6 lines tripping output module
SFI 1 line breaker failure
and supervision unit board
MFI 1 line breaker failure and supervision output
and input board
DTE Multifunctional module which
gathers the following functions: Reduction to
single differential, coupling closing
system, B.F. general tripping, permanent
signalling of differential tripping.
DPR Testing unit module
MDF B.F. general tripping module
(single bus)
BPP Signalling reset module
Each module consists of a printed circuit board with a front plate mounted on it through two supports. Over
this plate, there are two elements that fit into two nuts on the box that serve the purpose of pulling the
module out of the rack or pushing it into it.
The electrical connections are made through a male connector which fits into a female connector located in
the box.
They are similar to the printed circuit modules except for their structure which consists of a metal plate for
the assembly of the output relays and other components. They also use a different connector.
GEK-98514B BUS1000 Busbar Protection
5. HARDWARE DESCRIPTION
Width Draw-out
Inches
1 YES
1 YES
2
2.5
2
2
1 YES
2
6
9,5
1.5
2
5.3.1. PRINTED CIRCUIT BOARDS
5.3.2. OUTPUT MODULES
NO
NO
NO
NO
NO
NO
NO
NO
NO
5-5