L3692
Tmax T8
31/39
Doc N°
Mod.
1SDH000682R0002
Apparatus
Scale
Page N°
L3885
L5757
13. Circuit diagrams
WARNING:
Carefully read notes F and O on the circuit diagrams before installing the circuit-breaker.
OPERATING STATE SHOWN
The diagram illustrates the components in the following conditions:
- circuit-breaker open
- circuits de-energized
- releases not tripped
- motor operator with unloaded springs.
VERSIONS
Version without overcurrent release
The applications indicated in fi gures 13, 14, 41, 42, 43, 44, 45, 46, 62 cannot be provided with this version.
Version with PR232/P-T8 electronic release
The applications indicated in fi gures 41, 42, 43, 44, 45, 46, 62 cannot be provided with this version.
Version with PR331/P electronic release
The applications indicated in fi gures 42, 43, 44, 45, 46 cannot be provided with this version.
Version with PR332/P electronic release
The applications indicated in fi gure 41 cannot be provided with this version.
KEY
= Figure number of the diagram
*
= See note indicated by the letter
A1 =
Circuit-breaker
appications
A4
= Example switchgear and connections for operation and signalling, outside the circuit-breaker
A13
= PR021/K signalling unit (outside the circuit-breaker)
AY
= SACE SOR TEST UNIT test/monitoring unit (see note R)
D
= Electronic time delay device of the undervoltage release, outside the circuit-breaker
F1 =
Delayed-trip
fuse
K51
= PR232/P-T8, PR331/P, PR332/P electronic release with the following protection functions:
- L overload protection with inverse long-time delay trip setting I1
- S short-circuit protection with inverse or defi nite short time-delay trip setting I2
- I short-circuit protection with instantaneous time-delay trip-setting I3
- G earth fault protection with inverse short time-delay trip-setting I4
K51/1...8
= Contacts for the PR021/K signalling unit
K51/GZin(DBin)
= Zone selectivity: input for protection G or “reverse” direction input for protection D
(only with Uaux. and PR332/P release)
K51/GZout(DBout) = Zone selectivity: input for protection G or “reverse” direction input for protection D
(only with Uaux. and PR332/P release)
K51/SZin(DFin)
= Zone selectivity: input for protection S or “direct” direction input for protection D (only with Uaux. and PR332/P release)
K51/SZout(DFout) = Zone selectivity: input for protection S or “direct” direction input for protection D (only with Uaux. and PR332/P release)
K51/YC
= Closing control from PR122/DC or PR123/DC microprocessor-based release with communication module PR330/D-M
and with actuator unit PR330/R
K51/YO
= Closing control from PR332/P microprocessor-based release with communication module PR330/D-M and with
actuator unit PR330/R
M
= Motor for loading the closing springs
Q =
Circuit-breaker
Q/1...5
= Auxiliary contacts of the circuit-breaker
S33M/1...3
= Limit contacts of the spring loading motor
S43
= Switch for setting remote/local control
S51
= Contact for electrical signalling of circuit-breaker open due to tripping of the overcurrent release.
The circuit-breaker can only be closed after the reset pushbutton has been pressed,or after the coil has been energized
for electrical reset (if available)
S51/P1
= Programmable contact (signals overload in progress - start by default)
SC
= Pushbutton or contact for closing the circuit-breaker
SO
= Pushbutton or contact for opening the circuit-breaker
SO1
= Pushbutton or contact for opening the circuit-breaker with delayed trip
SO2
= Pushbutton or contact for opening the circuit-breaker with instantaneous trip
SR
= Pushbutton or contact for electrical resetting of the circuit-breaker
SRTC
= Contact for electrical signalling of circuit-breaker open, with springs loaded and ready to close.
TI/L1
= Current transformer located on phase L1
TI/L2
= Current transformer located on phase L2
TI/L3
= Current transformer located on phase L3
TO
= Homopolar toroidal current transformer (see note T)
TU
= Isolation voltage transformer (see note O)
Uaux.
= Auxiliary power supply voltage (see note F)
UI/0
= Current sensor (Rogowski coil) located on the conductor that earths the neutral point of the MV/LV transformer
(see note G)
UI/L1
= Current transformer (Rogowski coil) located on phase L1
UI/L2
= Current transformer (Rogowski coil) located on phase L2
UI/L3
= Current transformer (Rogowski coil) located on phase L3
UI/N
= Current transformer (Rogowski coil) located on neutral
W1
= Serial interface with control system (external bus): EIA RS485 interface (see note E)
W2
= Serial interface with the accessories of releases PR331/P and PR332/P (internal bus)
Содержание Tmax T8 L3692
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