8) Lockable Trip Push Button (LTPB/LOB):
LOB locks the breaker in OFF position by continuously
pressing the OFF push button. Lock defeats all the positive closing signals (mechanical or electrical) coming to the
breaker and thus prevents the nuisance closing of the breaker. Locking ‘OFF’ button (LOB) can be implemented
using C-Type / R-Type of locks. The locks are designed in such a way that the keys cannot be removed out till the
breaker is locked (OFF button pressed). Locking of the breaker in OFF position ensures safety of the maintenance
person working on downstream equipment. Locking ‘OFF’ button (LOB) can be used
to design the interlocking schemes with other devices in the system.
9) Shroud for ON-OFF Button:
Transparent shroud blocks the access to the
ON/OFF push-buttons used to open and close the breaker. It prevents inadvertent or
unauthorized operation of the ON or OFF button. It’s possible to independently lock
the ON/OFF push button with the help of ON-OFF button shroud & mechanical lock. It
can be pad-locked with lock hasp of 6mm diameter.
Cradle Accessories:
1) Electrical Position Indication (EPI):
Secondary Isolating Contact (SIC) blocks on ACB cradle assembly
facilitates the electrical indication for the exact position of the breaker within the cradle. 3 SIC contacts
electrically indicates the Connected / Test / Disconnected positions of breaker.
2) Door-interlock:
Door-interlock inhibits the opening of door if ACB is in
Test or Service position. Door-interlock can be mounted on either side of
the cradle (LHS or RHS).
4) Racking Shutter Pad-lock:
Racking Shutter Pad-lock inhibits the access to the racking mechanism such
that racking handle cannot be inserted to rack-in/rack-out the breaker. Racking Shutter Pad-lock is an inbuilt
feature with Omega ACBs. It can be pad-locked with lock hasp of 6mm diameter.
3) Door-racking interlock:
Door-racking interlock prevents the
racking-in operation of the breaker if panel door is open.
5) Safety Locks:
Any of C-Type, R-Type locks can be used for locking the ACB in "Any position"/"Isolated
position" & locking "OFF" push button, for interlocking with other electrical devices in the control scheme of the
system.
C-Type
R-Type
73
Accessories
6) Locking in Disconnected position:
Locking in Isolated/Disconnected position inhibits the undesirable
racking-in operation of the breaker from the isolated position. Locking in isolated position can be implemented
using C-Type, R-Type locks. Locking of the breaker in disconnected position ensures safety of the maintenance
person working on downstream equipment. The locks are designed in such a way that
the keys cannot be removed out till the breaker is locked, at the same time the breaker cannot be locked
in “Service/Connected” or “Test” positions. Locking in Disconnected position can be used to design the
interlocking schemes with other devices in the system.
7) Locking in all positions:
Locking in all positions facilitates the locking of breaker in Connected/Test or
isolated positions. Locking in all positions can be implemented using C-Type, R-Type locks.
8) Safety Shutter:
The fixed part (cradle) of withdrawable Circuit Breaker contains safety shutters for
preventing inadvertent access to live terminals of Circuit Breaker when
breaker is withdrawn from the cradle. Safety shutters can be locked in
closed position using pad-lock devices.
9) Arc-shield:
Arc-shield helps in reducing the vertical clearance between
two ACBs in vertical tier panels from 300mm to mere 45mm*. Arc-shield
facilitates in compact design of switchboards
10)Rating Error-Preventer:
Rating Error-Preventer ensures that the
breaker of proper rating goes with the cradle of corresponding rating. It is
made up of two sub-assemblies one on the cradle and other one on the
breaker. Rating Error-Preventer offers distinct combination for a particular
breaking capacity version within a particular rating of the breaker. Rating
Error-Preventer comes as an inbuilt feature with Omega ACBs.
1) ACB Maintenance Cover:
Using Cover, panel door can be covered during maintenance at site to prevent
the entry of dust or foreign material in the panel enclosure and cradle. The same can be fitted on the bezel
without any tool and is common for fix and draw-out version of OMEGA ACB.
2
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:
A transparent safety cover mounted on the door-sealing frame on panel door
increases the Ingress Protection (IP) of the ACB from IP53 to IP54. Safety cover can be mounted in Left hinge /
Right hinge combinations.
74
Accessories
PANEL M
ANCE CO
AINTEN
VER
ELECTRICAL HAZARD
BEWARE OF
ELECTRICAL SHOCK.
PERSONAL INJURY OR
SCALDING BURN
MAY BE CAUSED
ELECTRIC L HA ARD
A
Z
BE A E O
W R
F
ELE TRICAL SHOCK.
C
PERSO AL INJURY O
N
R
SCALDING BURN
AY BE CAUSED
M
ANEL
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MAINTENANCE
COVE
PANEL
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MAINT NANCE
COVE
ELEC RI AL H ZAR
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W E F
ELEC I ALSH
CK
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PE SON L I JUR OR
R
A N
Y
ALD NGBU N
SC
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MAY BE CA SED
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Miscellaneous Accessories:
* In case of Temperature Module mounted on the Cradle this dimension should be 70 mm.
Summary of Contents for OMEGA
Page 2: ...Stabilise systems with technology ...
Page 4: ...Change course quickly ...
Page 6: ...Match performance with prudence ...
Page 8: ...Adopt technological brilliance ...
Page 10: ...Keep an eye on upkeep ...
Page 26: ...Matrix Protection Control Units T UW M X4 5 ...
Page 70: ...Accessories ...
Page 84: ...Control Circuit Wiring ...
Page 92: ...Mounting Termination ...
Page 135: ...SP 50567 R5 ...