IT system is to protect the grounding system. The so-called grounding is to closely connect a part of the equipment to the earth through the grounding device.
The ground voltage is the potential difference between the charged body and the earth with zero potential. Obviously, the ground voltage is equal to the product of the grounding current and the grounding resistance: Ud=Rd×Id.
The neutral wire of the transformer is grounded and divided into two, one is for the working zero wire and the insulation, and the other is for the protection of the zero wire and the shell. This is the so-called TN-S system (i.e. three-phase fire wire, a zero wire, and a ground wire).
TT TN IT power supply system is named according to the different neutral point grounding N, public protection line PE, and protection neutral line PEN junction.The TT system refers to the three-phase four-wire, the neutral point is directly grounded, and the equipment is connected to the PE line. That is, the equipment shell is directly grounded.
TT system is a system in which the neutral point of the power supply is directly grounded and the shell of the electrical equipment is also directly grounded. Usually, the grounding of the neutral point of the power supply is called working grounding, and the grounding of the equipment shell is called protective grounding. In the TT system, these two groundings must be independent of each other.
TT system is a system in which the neutral point of the power supply is directly grounded, and the exposed conductive part of electrical equipment is also directly grounded. Usually, the grounding of the neutral point of the power supply is called working grounding, and the grounding of the exposed conductive part of the equipment is called protective grounding. In the TT system, these two groundings must be independent of each other.
IT system is a kind of low-voltage power distribution system, and "protective zero connection system" is only a one-sided statement. Definition of IT system: a system in which the neutral point of the power supply is not grounded, and the exposed conductive part of the electrical equipment is directly grounded. The IT system can have a neutral line, but IEC does not recommend setting a neutral line.
IT system is the right way to protect the zeroing system. It is a system in which the charged part of the power supply system is not grounded, or the exposed conductive part of the electrical equipment is grounded through impedance grounding. Nowadays, most of the grounding and zeroing systems adopt the standards stipulated by the International Electrotechnical Commission (IEC).
IT system is an international standard IEC60364 that distinguishes three different types of grounding systems, using two letter codes to represent TN, TT and IT. The first letter indicates the relationship between the power supply end and the ground: T indicates that the power supply end is directly grounded;I means that all the charged parts of the power supply are not grounded or grounded by impedance.
Hearthstone arena-APP, download it now, new users will receive a novice gift pack.
IT system is to protect the grounding system. The so-called grounding is to closely connect a part of the equipment to the earth through the grounding device.
The ground voltage is the potential difference between the charged body and the earth with zero potential. Obviously, the ground voltage is equal to the product of the grounding current and the grounding resistance: Ud=Rd×Id.
The neutral wire of the transformer is grounded and divided into two, one is for the working zero wire and the insulation, and the other is for the protection of the zero wire and the shell. This is the so-called TN-S system (i.e. three-phase fire wire, a zero wire, and a ground wire).
TT TN IT power supply system is named according to the different neutral point grounding N, public protection line PE, and protection neutral line PEN junction.The TT system refers to the three-phase four-wire, the neutral point is directly grounded, and the equipment is connected to the PE line. That is, the equipment shell is directly grounded.
TT system is a system in which the neutral point of the power supply is directly grounded and the shell of the electrical equipment is also directly grounded. Usually, the grounding of the neutral point of the power supply is called working grounding, and the grounding of the equipment shell is called protective grounding. In the TT system, these two groundings must be independent of each other.
TT system is a system in which the neutral point of the power supply is directly grounded, and the exposed conductive part of electrical equipment is also directly grounded. Usually, the grounding of the neutral point of the power supply is called working grounding, and the grounding of the exposed conductive part of the equipment is called protective grounding. In the TT system, these two groundings must be independent of each other.
IT system is a kind of low-voltage power distribution system, and "protective zero connection system" is only a one-sided statement. Definition of IT system: a system in which the neutral point of the power supply is not grounded, and the exposed conductive part of the electrical equipment is directly grounded. The IT system can have a neutral line, but IEC does not recommend setting a neutral line.
IT system is the right way to protect the zeroing system. It is a system in which the charged part of the power supply system is not grounded, or the exposed conductive part of the electrical equipment is grounded through impedance grounding. Nowadays, most of the grounding and zeroing systems adopt the standards stipulated by the International Electrotechnical Commission (IEC).
IT system is an international standard IEC60364 that distinguishes three different types of grounding systems, using two letter codes to represent TN, TT and IT. The first letter indicates the relationship between the power supply end and the ground: T indicates that the power supply end is directly grounded;I means that all the charged parts of the power supply are not grounded or grounded by impedance.
bingo plus update today Philippines
author: 2025-02-18 15:00Hearthstone arena class win rates reddit
author: 2025-02-18 12:26UEFA Champions League live streaming free
author: 2025-02-18 12:38892.65MB
Check817.36MB
Check723.28MB
Check125.82MB
Check764.79MB
Check532.75MB
Check793.78MB
Check915.82MB
Check693.58MB
Check412.68MB
Check241.43MB
Check883.66MB
Check796.93MB
Check117.66MB
Check879.28MB
Check584.15MB
Check557.17MB
Check128.79MB
Check392.53MB
Check295.26MB
Check495.84MB
Check386.96MB
Check917.78MB
Check779.84MB
Check642.33MB
Check781.59MB
Check194.67MB
Check225.47MB
Check347.36MB
Check758.55MB
Check412.72MB
Check116.42MB
Check836.81MB
Check559.87MB
Check832.46MB
Check151.65MB
CheckScan to install
Hearthstone arena to discover more
Netizen comments More
1788 Hearthstone Wild Decks
2025-02-18 14:46 recommend
1827 UEFA European championship
2025-02-18 13:35 recommend
473 Casino free 100 no deposit
2025-02-18 13:11 recommend
1206 App to watch Champions League live free
2025-02-18 13:04 recommend
1193 Hearthstone arena class win rates reddit
2025-02-18 12:32 recommend