A wind tunnel investigation was performed to study the flow field over a 70° swept sharped edge delta wing model at high angles of attack. The experiments were conducted in the subsonic wind tunnel at the Department of Mechanical Engineering, Sharif University of Technology. Velocity profiles have been measured using a special pitot tube and hot wire anemometer at angles of attacks of 10 to 35 ...

The low-voltage circuit breaker has been used for many years for network and persons protection. The review papers existing on these devices generally deal with electrical aspects or macroscopic information on the arc but few concern the “fine” understanding of arc behaviour from its ignition between the opening contact to the current limitation stage due to its presence in the splitter plates....

This report reanalyzes data from a survey of Ground-Fault Current Interrupters (GFCIs), conducted by the National Electrical Manufacturers Association (NEMA). In that study, participating home inspectors in a number of cities added testing of receptacle and circuit breaker GFCIs to their normal home inspections. The home inspectors reported this data to NEMA. Also as part of the study, homeowne...

Owing to very rapid growth in electronics and technology, it has become very essential to maintain power quality at the consumer end. Since power quality has vast no of assets, mainly important and frequently occurring disturbances are considered in this paper. Power quality is mainly defined by disturbances associated with voltage. However, the voltage disturbances can be classified based on t...

The state of the energy-absorption branch MOV in hybrid DC circuit breaker (DCCB) has a very important impact on short fault breaking operation breaker. Therefore, it is necessary to evaluate MOV, which also called “sleep component”. Due DCCB being placed indoors, aging mainly caused by short-circuit impulse current. this paper focuses study characteristics MOV. dynamic simulation system was bu...

Pyro-breaker, a fast-responding, highly reliable and explosive-driven circuit breaker, is utilized in several Quench Protection Systems (QPS). The commutation process its parameters are the main technical considerations of designing new pyro-breaker. parameters, such as time current change rate, not only determined by electrical but also arc behavior during operation. greatly affected structure...

Let [Formula: see text] denote the length of a shortest path between vertices and in graph with vertex set text]. For positive integer text], let A is distance-[Formula: resolving if for distinct In this paper, we study maker-breaker game (MB[Formula: text]RG) played on by two players, Maker Breaker, who alternately select not yet chosen. wins selecting which form whereas Breaker preventing fro...