L3447
Emax DC
103/108
Doc. No.
Model
1SDH000635R0002
Apparatus
Scale
Page No.
L3728
Circuit diagram symbols (IEC 60617 and CEI 3-14 ... 3-26 Standards)
Shield
(may be drawn
in any shape)
Time delay
Mechanical or electrical
connection
Manual mechanical control
(general case)
Rotating control
Pushbutton control
Equipotentiality
Terminal
Plug and socket
(male and female)
Motor
(general symbol)
Change-over position contact
with momentary circuit
breaking (limit contact)
Power isolator with automatic
breaking action
Switch-disconnector
Control coil
(general symbol)
Instantaneous overcurrent relay
Overcurrent relay with
adjustable short time-delay
trip
Galvanically separated
converter
Shielded cable conductors
(i.e., 3 conductors shown)
Conductors or stranded cables
(i.e., 3 conductors shown)
Connection of conductors
Make contact
Break contact with
automatic circuit
breaking
Change-over contact
Make position contact (limit
contact)
Break position contact (limit
contact)
Overcurrent relay with inverse
long time-delay trip
Earth fault overcurrent relay
with inverse short time delay
Fuse (general symbol)
Current sensor
Overcurrent relay with inverse
short time-delay trip