Tianyi switch - the selection principle of air switch

(1) The disconnector should have an obvious disconnection point, which is easy to identify whether the electrical appliance is disconnected from the power grid. (2) There should be reliable insulation between the disconnect points of the disconnector, that is, there should be enough distance between the disconnect points of the disconnector to ensure that it can work reliably under harsh climatic conditions, and ...

1. Pull together the voltage transformer and lightning arrester under normal conditions. 2. Pull together the 220kV no-load bus. 3. The neutral point of the transformer when there is no ground fault in the latching grid. 4. Pull the bypass current that is closed by a switch or an isolated switch. 5. Outdoor vertical splitting triple isolation ...

LA42(V) series pushbutton switch is a new series of products independently developed by the senior technical team of VTeam Electric. It can be used in applications with rated insulation voltages up to 690V and nominal ratings of A600 (AC-15) and Q600 (DC-13). LA42(V) series pushbutton switches have a beautiful appearance ...

(1) The cost of linear power supply is higher than that of switching power supply at a certain output power point. Therefore, with the development and innovation of power electronics technology, the switching power supply technology continues to break through and innovate.

It is mainly divided into ATS and STS. STS static toggle switch STS (Static Transfer Switch), also known as static transfer switch. The STS automatically switches to the second channel to supply power to the load after the first channel fails.

(1) Green (HG, GL) What it means: stands for Safety, Normal, Readiness (i.e., an indication under safe operating conditions or the readiness of a mechanical device to start). Function: It is often used to indicate the state of equipment ready to start, all auxiliary components are in a state of preparation for operation, and various parts ...

1. The air switch is an important electrical appliance in the low-voltage distribution network and power drive system, which integrates control and a variety of protection functions. In addition to completing contact and breaking circuits, it can also generate short circuits to circuits or electrical equipment. Protection against severe overloads and undervoltages, etc.

First, the characteristics are different 1. Limit switch: The limit switch has the characteristics of small size, multiple functions, high precision, adjustable limit, strong versatility and easy maintenance, installation and adjustment. 2. Proximity switch: The proximity switch has the characteristics of a limit switch, and at the same time has the sensing performance.

1. The circuit breaker is equipped with an arc extinguishing device, so the circuit breaker can be operated with load, but it cannot operate the current of the load. The disconnector does not have an arc extinguishing device, and it can operate places where the load current is less than 5A, but it is generally not suitable for operation with load. 2. And the circuit breaker ...

1. First of all, it is necessary to select the appropriate input voltage specification; 2. Choose the right power. In order to extend the service life of the power supply, it is necessary to select an additional type with 30% of the rated output power. 3. Consider the load characteristics. The load added is a motor, bulb or capacitive load, and the current at start-up ...

1. Pay attention to stability When adjusting the output current of the switching power supply, the stability of the circuit must be ensured, otherwise there will be current fluctuations, disturbances and other phenomena, which will affect the normal operation of electronic equipment. Therefore, it is necessary to perform a ...

1. The design is usually simple and straightforward 2. Works well in almost any industrial environment 3. It has high accuracy and repeatability 4. Low-power devices 5. High inductance load can be switched 6. Used to switch multiple loads 7. Simple installation ...

1. When the power is cut off for some reason and the power supply cannot be restored in a short period of time, the backup power supply must be enabled: (1) Cut off the circuit breakers of the mains power supply (including the circuit breakers of the control cabinet of the power distribution room, and the mains power cut-off of the dual-power switching box), and pull the double-cast anti-backing switch to the side of the self-provided power supply, ...

1. Provide an electrical interval and a visible disconnection point during electrical equipment maintenance to ensure the personal safety of maintenance personnel [3] . 2. The disconnector can not be operated with load: it cannot be operated with rated load or large load, and it cannot be divided and combined with load current and ...

Uses: X42 series limit switches can be widely used in various types of mechanical equipment, automatic assembly lines and other light and medium load occasions, can detect the object action state, such as presence and absence, movement position, end of stroke, etc. Overview: The switch is mainly composed of switch operating parts, ...

1. Differences in appearance Although these two types of switches seem to be very familiar, but there are still differences, half of the leakage protection switch is the same as the air switch, and the other half is not, it is equipped with a test jump button and a recovery button, which are not available in the air switch. 2 ...

The load switch and combination electrical appliances are mainly composed of frames, isolation switches (the current limiting fuse of the combination is on the isolation switch), vacuum switch tubes, grounding switches, spring operating mechanisms, etc. The product has compact structure, small size, long life, strong closing and breaking ability, and simple operation and maintenance.

First, the characteristics of the load switch A load switch is a switchgear between a circuit breaker and an isolation switch. It has a simple arc extinguishing device, which can cut off the rated load current and a certain overload current, but cannot cut off the short-circuit current Second, the classification of load switches According to the operating voltage ...

1. Altitude: 2000m and below; 2. Ambient temperature: -25°C-+40°C; 3. Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%; 4. Places without conductive dust, corrosive gases and water vapors; 5. No fire ...

First, the reason for the fault of the induction circuit of the switch button indicator 1. Aging of circuit board: The circuit board of the switch button indicator induction circuit board may be aged if it has been used for too long, resulting in leakage in the circuit, and then the induction failure of the indicator light. 2. Sense ...