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BC - 110



BELT CONVEYOR - 110



ITEM BC - 110
PANEL NUMBER 10F -
PANEL. SIDE PMCC - 3
JB SIDE JH - 6
TYPE ACB
KW 200
HP 215
FUSE RATING ACB
POLE 4
VOLTAGE 415
F1. AMP 260
RPM 1490
SFU RATING 800A
FRAME NTVC710E
BEARING DESIGN NU230C3
FLC 324

 

Electrical ACB Breaker

ACB (Air Circuit Breaker) is an electrical switching device that provides protection against short circuits and overloads in an electrical system. It is commonly used in industrial and commercial applications to control and distribute electrical power. It is capable of interrupting current flow in the event of an overload or short circuit, preventing potential damage to electrical equipment and ensuring the safety of the electrical system.

Working Principle

ACB operates based on the principle of thermal-magnetic protection. It consists of a trip unit that detects the current passing through the breaker. When the current exceeds the predetermined threshold, the trip unit activates the opening mechanism, disconnecting the circuit.

Features

  • Overload Protection: ACB can detect and protect against excessive current flowing through the electrical system, preventing damage to the equipment and wiring.
  • Short Circuit Protection: In case of a short circuit, ACB reacts quickly to interrupt the current flow, minimizing the risk of electrical fires and equipment damage.
  • Adjustable Trip Settings: ACB offers adjustable trip settings for both overload and short circuit protection, allowing customization based on the specific requirements of the electrical system.
  • Remote Control Capability: Some ACBs are equipped with remote control features, enabling operators to monitor and control the breaker remotely.
  • High Breaking Capacity: ACB is designed to handle high fault currents and has a high breaking capacity to interrupt the current safely.

Maintenance and Testing

Regular maintenance and testing of ACBs are essential to ensure their proper functioning and reliability. Some common maintenance tasks include cleaning, lubrication, and inspection of contacts, trip units, and mechanical parts. Periodic testing, such as trip testing and insulation resistance testing, should also be performed to verify the breaker's performance.

ACBs play a crucial role in electrical system protection, providing safety and reliability. Proper installation, maintenance, and adherence to safety guidelines are essential for the effective operation of ACBs.

Activity prior to the outage

  • Review of ACB Tripping history
  • Perform visual inspection.
  • Measure Temperature using Non Contact Infrance Thermometer.
  • Indentify material required during Maintenance

Operating condition of ACB

  • High humidity & high ambient temp.
  • Frequent switching operations
  • Dusty & dirty atmosphere
  • Corrosive atmosphere
  • Older equipment
  • Frequent fault operations
  • Frequent racking operations

Activity during the outage:

  • Trip the Circuit Breaker
  • Follow "lockout tagout" Process
  • Check mechanical and Electrical operation
  • Perform Inspections and cleaning
  • Breaker
  • SIC contacts
  • Arc Chute
  • Jaw
  • Cradle
  • Cradle contacts
  • Main contacts
  • Clean pole assembly and Mechanism
  • Apply Balmerol Moly Grease (Black) to moving parts of mechanism
  • Apply Lithon (yellow) grease to bearing components,
  • Apply Licom grease law contacts
  • Replace split pin of main spring (In case of EDO/EF ACB)
  • Use new wire circlips, pin for UV, facia, retainer, washer wherever required,
  • Maintain the arcing contact gap.
  • Check simultaneously closing of all pole with pale slow closing test method.
  • Gap between trip and roller (0.2 mm min)
  • Perform Release Function test with Secondary injection Kit. (In case of electronic release).
  • Test functionalities of accessories if any.
  • Check tightness of joint
  • Affix Maintenance Sticker on ACB
Activity after the outage :
  • Energize switchgear and verify normal operation
  • Remove Signs,
  • Prepare a report of maintenance and test results.

Content of the Service Kit :

  1. Self Carbon check list.
  2. Cloth for cleaning (Chese Cloth)
  3. Cloth for Cleaning Contact
  4. Scruber (Sctoch Brite)
  5. Hand gloves
  6. Wire Cerclip 4,5,6 Mm
  7. Lithon Yellow Grease
  8. Spring for trip latch Assembly
  9. Pin UV/EA/SR release link
  10. Balmerol Moly ML grease(black)
  11. Lycom grease for jaw contact
  12. Facia retainer washers
  13. Maintenance Label
  14. Check List
  15. CRC Spray
  16. Split pin of main Spring
  17. Champion set, Plain multitype Screw Driver
  18. Same as - "D,Ring and T Pana - (6/7,8/9,10/11,12/13)
  19. Pillar Gauge for Breaker pole adjustment.
  20. Noise pliers and combinations pliers.
  21. Cotton for cleaning.



DRAWING 


FERULING DRAWING 






ACB DRAWING 


ZERO SPEED SWITCH


PULLCARD



SHORTCUT TRICK

PROBLEM SHORTCUT for BYPASS
24V DC COMMON SUPPLY X - 20
EM STOP X - 20 to X1 - 1
REMOTE X - 20 to X1 - 2
LEFT SIDE PULLCARD X - 20 to X1 - 3
RIGHT SIDE PULLCARD X - 20 to X1 - 4
LEFT SIDE BELTSWAY X - 20 to X1 - 5
RIGHT SIDE BELTSWAY X - 20 to X1 - 6
ZERO SPEED SWITCH X - 20 to X1 - 7
CONTROL SUPPLY FAILURE X - 20 to X - 22
FEEDBACK X - 20 to X - 23
FAULT X - 20 to X - 25

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