ACB

Listing Results ACB

Frequently Asked Questions

• What is the purpose of an ACB circuit breaker?

  Air Circuit Breakers (ACB) Air circuit breaker is a circuit breaker for the purpose of protecting low voltage circuit, mainly for energizing and cutting off high current. It is used as the master of a factory and building, and as a main circuit breaker of a ship, and it is possible to attach various accessories according to...

• What are the different types of ACBS used for?

  1 It is used for protection of plants. 2 It is used for common protection of electrical machines. 3 It used for protection of transformers, capacitors and generators. 4 ACB is also used in electricity sharing system and NGD about 15kV. 5 Also used in Low as well as High voltage and Currents applications .

• How is the arc extinction of an ACB controlled?

  Magnetic blowout air circuit breakers provide magnetic control over the arc moment to make arc extinction within the devices. The arc extinction is controlled using magnetic field provided by the current in blowout coils connected in series with the circuit being interrupted.

• Which is better an ACB or a MCCB?

  The times of mechanical durability of ACB is significantly increased compared with MCCB. By adding various interface units, connection to the main network is available. *CC-Link, MODBUS, PROFIBUS-DP

• What is the purpose of articulating concrete block revetment systems?

  This design manual provides guidelines and procedures for the design and installation of articulating concrete block revetment systems. Articulating concrete block (ACB) systems are used to provide erosion protection to underlying soil from the hydraulic forces of moving water.

• What does ACB stand for in concrete block?

  The ACB system is a matrix of individual concrete blocks placed together to form an erosion-resistant revetment with or without a geotextile underlay for subsoil retention. General information on ACB systems can be found in TEK 11-9B, Articulated Concrete Block for Erosion Control (ref. 1).

• What are the guidelines for an ACB revetment system?

  These guidelines apply to the installation of ACB revetment systems, whether hand-placed or placed as a mattress. They are based on Design Manual for Articulating Concrete Block (ACB) Revetment Systems (ref. 2) and comply with ASTM D6884, Standard of Practice for the Installation of Articulating Concrete Block (ACB) Revetment Systems (ref. 3).

• What is the best way to learn about the design and construction of ACB systems?

  Use this design manual to ensure proper design and construction of ACB systems. In addition to the Manual, NCMA has developed a design spreadsheet for ACB systems using the same methodology.