Advantages of the third wire system
The system of connection to the earth
Chapter One - Definitions
This chapter defines the terms and words used in the Codex.
1- Earth-carrying Earth's mass is called land (earth connection) if the potential potential at any point in the earth is conventionally zero.
2. Ground-link system: One or more electrodes with ground-connection wires that can connect to the main terminal are called earth connection systems.
3. Ground electrode: A conductor or a group of conductors connected to each other that provides electrical connection to the ground.
4. Resistance electrode resistor: Resistance between the main terminal of the earth and the planet.
5-Ground-link loop impedance: Impedance of a loop is a ground connection that is the start and end of that connecting point and is represented by Zs. The ground connection loop in different systems is as follows: a. TN systems are the starting point (connection point), from the body of the device to ground wire, earth connection shaft, nose shaft, transverse point, transverse wiring, connecting phase wire and point Connect to the body. B-TT and IT systems. Starting point (connection point), ground wire, earth electrode, ground electrode, system electrode, nose bush, transverse point, connecting wire and connecting point.
6. Connection: A mode of the circuit, in which the current flows in an unusual path or without being foreseen or considered. This flow may be due to imperfections in insulation or from the fastening applied to conductor insulators.
7. Earth-link current (short-circuit current): An overflow current that results from a connection with the impedance can be avoided between conductors with different potentials in normal conditions.
8. Earth leakage current: Current current to Earth or other conductors whose electrical circuit they are traveling to Earth is called the leakage of the earth. If the capacitor is used in circuits, the current may also have a condenser component.
9-Ground wire: A protective wire that connects the earth terminal to the ground terminal of the earth's ground connection to the Earth's earth connection electrode or other earth connections.
10-wire neutral (null): A wired connection to the neutral point in the system (zero ground) that can transmit electrical energy.
11. Protective conductor (PE) In some protective measures to protect against electric shock, it is necessary to connect the following parts using the protective conductor:
Alien conductor parts;
Main land terminal;
Transverse Point (Neutral)
12-Placed metal wire for landing: A type of wiring system that is covered in the head-to-head length of one or more insulated wires by a metal strip or sheath and acts like a PEN conductor.
13. Common Ground Connector - PEN (PEN) A wired PEN cable is commonly used to connect a wired earth wire and a wired harness.
14 Unprotected parts (open) Conductor: An unprotected part of the equipment that is touchable and does not carry electricity, but is capable of being electrically coupled to the condition of connection, is called the protective part of the conductor.
The 15th main terminal for earth connection is a terminal or shunt that is provided for connecting to protective wires and conductive wires and earth connection wires, or any device used as a ground connection. It connects to it.
16-Powerline: Wires or parts of the conductor that are electrically energized for use are called power strips. The SIM-NOL also includes these parts, but according to the PEN cable contract, the POW cable is not considered as an electric part.
17-Ground potential: Earth's potential is the electrical potential created by the mass of the earth or the earth's surface around the electrode. Land connection is called ground potential when the electric current flows from the electrode to the ground.
18-Potential gradient (at a point in the earth): The potential difference measured on the unit of the length of a point in the direction that has the maximum potential is called potential gradient.
19. Mobile devices (portable): They refer to electrical devices that are on the move or can be easily moved from one location to another, while they are connected to a power distribution station.
20 parts that can be accessed simultaneously: wires or conductive parts that are simultaneously touchable in special situations. These compartments include electrically powered bodies, unprotected parts (open), external conductors, ground wire and earth electrodes.
21-RCD: A mechanical switching device or a set of devices that, under certain conditions, keep the connections open at times when the residual flow has reached a specified value.
22-External conductor: An external conductor is part of a conductor that has potential for potential generation, in particular the potential for earth connection, and parts that are not formed from electrical equipment.
23. Devices for disconnecting and controlling (before or after switchgear): Equipment for connecting an electrical circuit with the following purpose:
Perform disconnect operation