What is the residual device?

The residual current is a protective agent that detects any imbalance in streams in one- and three-phase circuits and closes the power if necessary. It detects the sum of the electric current in network wires as opposite vectors with the same size. For single -phase connections, the relevant connections are live wire and neutral wire. The current flowing through the living conductor must be the same as the current that flows in the neutral wire. If this is not the case, problems in the district must be solved or there may be lives in danger.

Usually residual devices for single -phase protection use the induction bond of pure induced currents of living and neutral wires. If the wiring and insulation are perfect, it must be zero. There are several scenarios where it will have a difference and neutral current.

in a simple uniform connection if the load deletes 5 amps (a), a current on live wire and electric PThe Roud in Neutral should be 5 A. If the residual current is connected, it will be able to detect up to 20 millionales (MA) in the electrical current between two wires. This could mean that one accidentally touched the live wire and is an electric current from living to the ground. If this person has touched the live wire with barefoot legs that touched the Earth Earth, the residual current circuit breaker (RCCB) detects this situation, breaks the circuit and saves the person from another electric current. In this type of use, RCCB can also be referred to as a pad or a ground perimeter where a ground error may be an escape current caused by poor insulation, water penetration or a possible electrical current of the person.

In addition, the residual device is also a monitoring device for insulation. When Wiizolation of the Ring is either on live or neutral damage to the wire, there is a possibility of leakage to the ground or elsewhere. The effects of the current pass to the unintended place so that the residual currents detect it and the RCCB begins the load and de-obelieves the burden. Some RCCBs, such as interrupting the device leak, are designed to protect appliances that may have problems with insulation or contamination.

The district of the circuit circuit (AFCI) is an electrical connection that detects and stops undesirable establishment in the electrical connection. These optoelectric arches are usually caused by free connections that begin with very low -energy establishment and progress to exclusion with higher energy that produce sufficient heat to start fire. AFCI is able to detect the patterns of electric bursting associated with the arching and de-verifying the district by interruption.