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7SV512 V1
2
Design
2.1
Arrangements
All protection functions including dc/dc converter are
accommodated on one Double Europa Format plug-
in module. This module is installed in a 7XP20 hous-
ing. Two different types of housing can be delivered:
-- 7SV512K- -KBKKK- - in housing 7XP2030--1 for
panel surface mounting
The housing has full sheet-metal covers, as well as
a removable front cover with transparent plastic
window.
Guide rails are built in for the support of plug-in
modules. On the top and bottom plates of the
housing, contact areas which are electrically con-
nected to the housing are installed to mate with the
earthing springs of the module. Connection to
earth is made before the plugs make contact.
Earthing screws have been provided on the left
hand side of the housing. Additionally, terminal 16
is connected to the case.
All external signals are connected by means of 60
screwed terminals which are arranged over cut-
outs on the top and bottom covers. The terminals
are numbered consecutively from left to right at the
bottom and top.
The heavy duty current plug connectors provide
automatic shorting of the c.t. circuits whenever the
module is withdrawn. This does not release from
the care to be taken when c.t. secondary circuits
are concerned.
For the optional interface to a central control and
storage unit, an additional coupling facility has
been provided. For the optical fibre interface (mod-
el 7SV512K--KKKKK--KC), two F--SMA connectors
are provided.
The degree of protection for the housing is IP51,
for the terminals IP21. For dimensions please refer
to Figure 2.2.
C53000--G1176--C91
-- 7SV512K- -KCKKK- - in housing 7XP2030--2 for
panel flush mounting or cubicle installation
The housing has full sheet-metal covers, as well as
a removable front cover with transparent plastic
window.
Guide rails are built in for the support of plug-in
modules. On the top and bottom plates of the
housing, contact areas which are electrically con-
nected to the housing are installed to mate with the
earthing springs of the module. Connection to
earth is made before the plugs make contact.
Earthing screws have been provided on the rear
wall of the housing.
All external signals are connected by means of
connector modules which are mounted on the rear
cover over cut-outs. For each electrical connec-
tion, one screwed terminal and one parallel snap-
in terminal are provided. For field wiring, the use of
the screwed terminals is recommended; snap-in
connection requires special tools.
The heavy duty current plug connectors provide
automatic shorting of the c.t. circuits whenever the
module is withdrawn. This does not release from
the care to be taken when c.t. secondary circuits
are concerned.
For the optional interface to optical fibres
(7SV512K--KKKKK--KC), a module with 2 F--SMA
connectors is provided.
The plug modules are labelled according to their
mounting position by means of a grid system (e.g.
1A2). The individual connections within a module
are numbered consecutively from left to right
(when viewed from the rear), (e.g. 1A2); refer to
Figure 2.1.
Degree of protection for the housing is IP51, for the
terminals IP21. For dimensions please refer to Fig-
ure 2.3.
Design
11
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