Air Circuit Breaker Test & Calibration
Circuit breakers are protection devices and require regular maintenance for a high level of performance and to avoid costly repairs. Maintenance is mandatory for work safety standards set by all countries authorities.
Manufacturers recommend maintenance of air circuit breakers to ensure proper operation and to maintain equipment warranties. With regular service air circuit breakers can remain in service almost indefinitely as long as spare parts are readily available.
Primary mission of ACBs is breaking circuits at high current or low voltage condition.Users can not determine condition of ACB against protection characteristic untill having proper testings.Control Technic has special test devices for all brands to make sure all protections of ACBs are working in good order.Here some famous brands We do service ABB , Schneider , Siemens , Terasaki , Hyundai , LS IS , Mitsubishi .
Control Technic is authorised service for Hyundai Electric and air circuit breakers.
While protection system testing and calibrating , below items are performed.
Long Time Protection Trip
Short Time Protection Trip
Instantenious Protection Trip
UVT pick up and Release Trip
* Tests are carried out by experts
* Primary current injection
* Secondary current injection
* Dedicated special equipments
* Main contacts observation
Regular maintenance benefits ;
Providing the best management of maintenance costs, in particular:
Less expensive direct costs of maintenance, by reducing the charges due to urgent situations.
Less expensive indirect costs of plant shut-down, taking advantage of the scheduled stop.
Ensuring better efficiency and reliability of the plant.
Extending the product’s life.
Guaranteeing the plant safety for a longer time.
Tests are carried onboard
No interrupting ship operation
Supporting all brands
ISO 9001:2015 QMS
Standard steps while maintenance
Visual inspection for any broken parts and replace as needed.
Clean and lubricate all mechanical linkages.
Removing covers and arc extinguishing shields, inspect for damage, wear and deterioration, clean and lubricate as required.
Checkng, cleaning main contacts, cleaning all covers and arc shields.
Checking security of all control wiring and associated fitted components.
Testing mechanical operations and reinstate covers and arc extinguishing shields.
Measuring insulation , phase to phase and phase to earth.
Performing mechanical and electrical operation of the breaker on test position and carrying out injection test on electronic trip devices to calibrate characteristics against set points.
Checking UVT ( Under Voltage Trip ) release pick up and release Checking motor mechanism
Replaing breaker to connect position and return breaker to service condition.
If maintenance , protection tests have been completed with success , an Inspection and Test Certificate can be issued.