Generally, it is better to install an air switch at the outlet end of the meter because the distance of the line is relatively long. If the leakage rate of the leakage switch is relatively increased, it may be caused by the wire. The leakage switch is better installed before using the device. The difference between the two: the air switch will operate if it exceeds its rated current, and the leakage switch will trip if it exceeds its rated current or leakage, mainly for home or office lighting, to ensure human safety.
1, the air switch is our usual common name, its correct name is called air circuit breaker. Air circuit breakers are generally low voltage, ie rated operating voltage is 1Kv. The air circuit breaker is a switching device that has various protection functions and can cut and close the circuit under rated voltage and rated operating current conditions. The type of protection function and the way it is protected are selected by the user as needed. Such as short circuit protection, over current protection, shunt control, under voltage protection. The first two protections are the basic configuration of the air circuit breaker, and the latter two are optional functions. Therefore, the air circuit breaker can also cut off the electrical circuit in the fault state (load short circuit, load over current, low voltage, etc.).
2. The correct name of the leakage switch is the leakage protection circuit breaker, which is an air circuit breaker with special protection function (leakage protection). In addition to the basic functions of the air circuit breaker, it can quickly break the switch when there is leakage in the load circuit (its leakage current reaches the set value) to avoid injury to personnel and adverse effects on electrical equipment when there is leakage in the load circuit. influences.
3. The leakage switch cannot replace the air switch. Although the leakage switch has a more protection function than the air switch, the possibility of leakage due to the possibility of leakage during operation often occurs, resulting in frequent power failures and affecting the continuous and normal operation of the electrical equipment. Therefore, it is generally only used in the temporary circuit of the construction site or the socket circuit of industrial and civil buildings.
The leakage switch can also be said to be a kind of air switch, and the mechanical action and arc extinguishing method are similar. However, since the leakage switch protects mainly the person, the general action value is milliampere. In addition, the action detection method is different: the leakage switch uses a residual current protection device, which detects the residual current, that is, the algebraic sum of the instantaneous values ​​of the phase line and the neutral current in the protected circuit (including the neutral line) Three-phase unbalanced current and harmonic current). For this reason, the current flow current can only avoid the normal leakage current value (milliampere level), so it can cut off the ground fault very sensitively and prevent direct contact with the electric shock. The air switch is a pure overcurrent trip (safety level).
The air switch is divided into two types: miniature circuit breaker and molded case circuit breaker. Their basic functions are: 1. Overcurrent and overload protection; 2. Short circuit protection. But the difference between the two is that the breaking capacity of the short circuit is different. The specific value depends on the model and manufacturer of the air switch. Leakage protection switch is mainly for leakage protection. Generally, the leakage current of civil residential design is 30mA. The value of 30mA is calculated by combining the resistance of the human body and the electric shock voltage. When the human body is in shock, the current is directly introduced into the earth through the human body. At this time, part of the current does not return to the grid through the zero line. When the leakage switch detects the current lost in this part, it is considered that there is leakage, and the switch automatically trips, thereby protecting.
The open can only be overloaded and shorted to trip. The leakage switch is equipped with a set of anti-leakage device on the basis of the air-opening, which can play the role of leakage tripping. To protect the safety of life and electrical equipment. Remember that the leakage switch only protects the human body from touching a single wire. If the human body touches the neutral wire and the fire wire at the same time, it will not protect.
Open and only open current, long time exceeds the set value will protect the jump, but also with short circuit protection; leakage protection is disconnected when the leakage current exceeds the set value; some open and at the same time with leakage protection.
If the air is not energized, you can also jump off by pressing the test button. If the leakage switch is not energized, press the test button and it will not jump.
In addition to CWDM, DWDM, FWDM, LAN WDM, FBT WDM, AAWG WDM, there are other WDM realted equipment that commonly used together to form up passive optical network. Like Mechanical Fiber Optic Switch, WDM PD, Pigtail PD, TAP WDM Devices, Optical Isolator, Optical Circulator, etc. In other words, Mechanical Fiber Optic Switch, WDM PD, Pigtail PD, TAP WDM Devices, Optical Isolator, Optical Circulator, etc., are the most commonly used WDM related equipment in construction of optical network. They all play important roles when setting up a integrated fiber optical network. You can always trust GL-COM in this area.
Mechanical Optical Switch is based on Advanced Optoelectronic Integrated Technology. it connects optical channels by redirecting an incoming optical signal into a selected output fiber. This is achieved using a Opto-Mechanical proprietary configuration and activated via an electrical control signal. Mechanical Fiber Optic Switch connects optical channels by redirecting an incoming optical signal into a selected output fiber. The mechanical operation offers ultra-high reliability and fast switching speed as well as bi-directional performance.
WDM Related Equipment, Mechanical Fiber Optic Switch, WDM PD, Pigtail PD, TAP WDM Devices, Optical Isolator, Optical Circulator
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