ABB HC800 control processor module
The relay ishoused in a normally flush-mountedpanel surface when the relay is panel mounted.case. The relay can also be arranged for semi-
The relay caseiscompletewitha hingedgasketed,
flush mounting with the use of a40mm,80mm
clear, UV-stabilized polycarbonate cover with a
or 120 mm raising frame, which reduces the
sealable fastening screw.The degree of protec-
depth behind the panel by the same dimension.
tion by enclosure of the cover is also IP54.
The type designations of the raising frames are
SPA-ZX111forthe40mmframe,SPA-ZX112
A terminal strip and two multipole connectors
for the 80 mm frame and SPA-ZX 113 for the
are mounted on the back of the relay case to
120 mm frame. A surface mounting caseSPA-
facilitate all input and output connections. To
ZX 110 is also available.
each heavy duty terminal, i.e. measuring input,
power supply or trip output, one 6 mm², one
The relay case is made of profile aluminium and
4 mm² or one or two 2.5 mm² wires can be
finished in beige.
connected. No terminal lugs are needed. The
signalling outputs are available on a six pole
A cast aluminium alloy mounting frame with a
detachable connector and the serial bus connec-
rubber gasket provides a degree of protection by
tion is using a 9-pin D-type connnector.
endosureto IP54 between the relay case and the

The front panel of the relay module contains
two push buttons. The RESET / STEP push
button is used for resetting operation indicators
and for stepping forward or backward in the
display main menu or submenus. The PROGRAM push button is used for moving from a
certain position in the main menu to the corresponding submenu, for entering the setting
mode of a certain parameter and together with
the STEP push button for storing the set values.
The different operations are described in the
subsequent paragraphs in this manual.
Display The measured and set values and the recorded
data are shown on the display of the protection
relay module. The display consists of four digits.
The three green digits to the right show the
measured, set or recorded value and the leftmost
red digit shows the code number of the register.
The measured or set value displayed is indicated
by the adjacent yellow LED indicator on the
front panel. When a recorded fault value is being
displayed the red digit shows the number of the
corresponding register. When the display functions as an operation indicator the red digit
alone is shown.
When the auxiliary voltage of a protection relay
module is switched on the module initially tests
the display by stepping through all the segments
of the display for about 15 seconds. At first the
corresponding segments of all digits are lit one
by one clockwise, including the decimal points.
Then the center segment of each digit is lit one
by one. The complete sequence is carried out
twice. When the test is finished the display turns
dark. The testing can be interrupted by pressing
the STEP push button. The protection functions of the relay module are alerted throughout
the testing.