L3692
Tmax T8
33/39
Doc N°
Mod.
1SDH000682R0002
Apparatus
Scale
Page N°
L3885
L5757
R) Operation of the SACE SOR TEST UNIT + shunt opening release (YO) is guaranteed from 75% of the Uaux of the shunt opening release
itself.
While the YO power supply contact is closing (short-circuit of terminals 4 and 5), the SACE SOR TEST UNIT is unable to detect the
opening coil state. For this reason:
- The TEST FAILED and ALARM signals will be activated if the opening coil is powered in the continuous mode
- If the opening coil is controlled in the pulsing mode, the TEST FAILED signal may be activated at the same instant. In this case, the TEST
FAILED signal should only be considered an alarm signal if it remains for more than 20s.
S) Also available in the version with normally closed contact.
T) The connections between the toroidal transformer TO and the terminals of terminal box XV of the circuit-breaker must be made with
shielded four-pole cable with paired braided wires (the BELDEN 9696 paired type) no more than 10m in length. The shield must be earthed
on the circuit-breaker side.
U) The shield of the connection cable must be earthed on the circuit-breaker side only. The connection must be made with shielded two-wire
cable (the BELDEN 3105A type) no more than 15 meters in length.
X) Poles T3 and T4 of connector XV are reserved for voltage measurements if U>690 V. In this case, they must be connected to the secondary
of the voltage transformer TU (see fi g. 44). Ask ABB SACE for residual current applications with over 690 V voltage values.
Z) Short-circuit T5 and T6 if the outside neutral current sensor (UI/N) is not connected.
Circuit diagram symbols (Standards IEC 60617 and CEI 3-14...3-26)
Shield (may be drawn in any
shape)
Time delay
Mechanical or electrical
connection
Manual mechanical control
(general case)
Rotating control
Pushbutton control
Equipotentiality
Terminal or clamp
Socket and plug
(female and male)
Motor
(general symbol)
Current transformer
Voltage transformer
Winding of three-phase
transformer, star connection
Change-over position con-
tact with momentary circuit
breaking (limit contact)
Power isolator with auto-
matic opening action
Switch-disconnector
Control coil
(general symbol)
Instantaneous
overcurrent relay
Overcurrent relay
with adjustable short
time-delay trip
Galvanically separated
converter
Shielded cable conductors
(e.g. three conductors)
Conductors or stranded
cables (e.g. 3 conductors)
Conductor connections
Make contact
Break contact with
automatic breaking
Change-over contact
Make position contact
(limit contact)
Break position contact
(limit contact)
Overcurrent relay with
inverse short time-delay
trip
Overcurrent relay
with inverse long time-delay
trip
Overcurrent relay
for earth fault with inverse
short
time-delay
Fuse
(general symbol)
Current sensor
