Siemens SIPROTEC 7SS523 V3.2 Manual page 5

Typographic
and symbol
conventions
7SS52 V4 Manual
C53000-G1176-C182-1
QUALIFIED PERSONNEL
For the purpose of this instruction manual and product labels, a qualified person is one
who is familiar with the installation, construction and operation of the equipment and
the hazards involved. In addition, he or she has the following qualifications:
• Is trained and authorized to energize, de-energize, clear, ground and tag circuits
and equipment in accordance with established safety practices.
• Is trained in the proper care and use of protective equipment in accordance with es-
tablished safety practices.
• Is trained in rendering first aid.
The following text formats are used when literal information from the device or to the
device appear in the text flow:
Parameter names, i.e. designators of configuration or function parameters, which
may appear word-for-word in the display of the device or on the screen of a personal
computer (with DIGSI), are marked in bold letters of a monospace type style.
Parameter options, i.e. possible settings of text parameters, which may appear
word-for-word in the display of the device or on the screen of a personal computer
(with DIGSI), are written in italic style, additionally. This applies also for options in
menus.
"Annunciations", i.e. designators for information, which may be output by the relay
or required from other devices or from the switch gear, are marked in a monospace
type style in quotes.
Deviations may be permitted in drawings when the type of designator can be obviously
derived from the illustration.
The following symbols are used in drawings:
Device-internal logical input signal
Device-internal logical output signal
Internal input signal of an analog quantity
External binary input signal with number (binary input,
input indication)
External binary output signal with number (device indi-
cation)
Example of a parameter switch designated with the
address and the possible settings
Preface
v