RPS 3EGF020333, Руководство пользователя

Страница: 67 / 90

12 Glossary
AC The term “alternating current” is used to refer to AC current
as well as AC voltage.
DC The term “direct current” is used to refer to DC current as
well as DC voltage.
Earthing Earthing establishes a defined reference potential or equipo-
tential loading.
Extraordinary check This check is carried out after extraordinary events, e.g.:
n Short circuits
n Extreme weather situations (storm, heat, ice, hail >
4 cm)
n Fire below and in the immediate vicinity (< 50 m) of the
contact line (effects of heat, soot deposit) and contact
with extinguishing agent (foam)
Perform an inspection of the area in question as per state
check Z.
Miniature circuit breaker Overcurrent protection device in the electric installation (also
known as an automatic circuit breaker). The cables are pro-
tected against excessive current and the related damage
caused by excessive heating. Miniature circuit breakers
have to be reset after they trip. Miniature circuit breakers can
have trip characteristics.
Overcurrent protection Protects the power equipment against thermal overloading
and it protects the line section against impermissible current
loads.
RAMS The term “RAMS” stands for Reliability, Availability, Maintain-
ability, Safety.
RAMS is a process as per EN 50126 that is intended to pre-
vent errors in the project planning phase. RAMS can already
be applied during the planning, development, realisation and
introduction of new products and systems. RAMS manage-
ment ensures that systems are defined, risk analyses carried
out, hazard rates determined, detailed checks performed
and that safety certificates are compiled.
Relay A usually electromagnetically acting switch which is actuated
by electric current. The control circuit and the power circuit
to be switched can thus be galvanically isolated. Power cir-
cuits with high power can be switched by power circuits with
low power.
Shift linkage Connection between the control lever and the object to be
switched.
State check Z Visual inspection of the state of catenary systems (fixed
points, section insulators, section insulation, neutral sec-
tions, retensioning devices, points spans), support points
and retensioning equipment and distances to active parts.
Switchgear The device can perform switching operations in DC switch-
gear assemblies.
Glossary
14.09.2022 TracFeed ® SFA Electromechanical remote motor drive 67