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.
UEFA European championship-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: 2025-02-05 22:11727.35MB
Check219.35MB
Check857.77MB
Check341.61MB
Check324.81MB
Check792.78MB
Check539.41MB
Check917.22MB
Check398.62MB
Check135.54MB
Check293.43MB
Check988.49MB
Check939.43MB
Check355.56MB
Check994.75MB
Check817.28MB
Check496.24MB
Check942.53MB
Check435.89MB
Check929.31MB
Check787.63MB
Check164.18MB
Check831.94MB
Check698.98MB
Check958.98MB
Check983.36MB
Check344.42MB
Check668.34MB
Check787.25MB
Check971.98MB
Check367.74MB
Check429.76MB
Check676.18MB
Check791.61MB
Check654.61MB
Check147.88MB
CheckScan to install
UEFA European championship to discover more
Netizen comments More
1651 casino plus free 100
2025-02-05 21:58 recommend
2444 Casino Plus
2025-02-05 21:56 recommend
469 Casino free 100 no deposit
2025-02-05 21:45 recommend
2767 Casino Plus free 100
2025-02-05 20:22 recommend
432 Casino Plus login register
2025-02-05 20:12 recommend