Tianyi switch - maintenance of disconnector switch

1. Protection The most important role of the limit switch must be its protection effect, the limit switch is also known as the travel limit switch, which is mainly used to control the stroke of mechanical equipment and limit protection. In practice, the travel limit switch is installed in a pre-arranged position, and the travel limit switch is installed in a pre-arranged position.

1. Principle The contact system of the transfer switch consists of several moving contacts embedded in the insulated housing with a static contact base and a movable support. The moving contact is a double-break butt contact bridge, which turns the circuit on or off with the rotating shaft of the rotating shaft attached to different positions. Positioning...

1. The high-voltage load switch can be used as a load switch, which has the effect of self-extinguishing arc, but its breaking volume is very small and very limited. 2. The high-voltage isolation switch generally cannot be used as a load switch. There is no arc extinguishing cover in the structure, and there are also disconnectors that can switch loads on and off, but the structure is different from load switches ...

1. The high-voltage load switch can be broken with load and has the function of self-extinguishing arc, but its breaking capacity is very small and limited. 2. The high-voltage isolation switch is generally not able to break with load, there is no arc extinguishing cover in the structure, and there is also an isolation switch that can break the load.

First, the repair method The maintenance of a switching power supply can be carried out in two stages (1) When the power is cut off, it is "Look, Listen, Listen, Measure" Look: Open the power box, check whether the wire is disconnected, look inside the power supply, and find that the PCB substrate of the power supply is scorched or the components are cracked.

(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. 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 ...

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 ...

JD series warning light is Tianyi electrical appliances in the field of signal control launched high-performance products, once launched, it has won the unanimous favor of customers, products in the design, manufacturing, quality control and other aspects of the company's quality system has always been under the strict testing and supervision of the company's quality system, to ensure that each product ...

1. Repeated short-circuit test ◆ Test instructions The output of the module is short-circuited in various input and output states, the module should be able to achieve protection or retraction, repeated short-circuits, and after troubleshooting, the module should be able to automatically resume normal operation. ◆ Test Method a ...

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

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. If it is installed on metal, a certain space must be ensured to avoid interference between the proximity switch and the metal other than the detection object, resulting in failure. The metal parallel to the sensing surface must be 3 times the sensing distance from the sensing surface. The metal around the shaft of the proximity switch must be outside the cylinder, close to ...

First, first place the dual power supply on the adjustment table, and the phase wire and the neutral wire (neutral line) are docked in place, and can not be connected wrongly. Second, after the line is connected, it is necessary to check the installed line, and then turn on the main switch of the debugging station to turn on the common and standby working power supply. Three, when the double ...

performance 1. Adopt double-row composite contacts, cross-connected mechanisms, micro-motor pre-energy storage and micro-electronic control technology, basically achieve zero arcing (no arc extinguishing cover); 2. Adopt reliable mechanical interlocking and electrical interlocking technology; 3. Adopt zero-crossing technology; 4、 ...

Q11: What is the maximum number of connecting rods for the rear mounting of P1 and P3? A: Up to 4 sections can be added, each section is 25mm. Q12: Does the P switch with SVB in the model come with PE grounding and N-wire terminals? A: P switch models with SVB are equipped with PE grounding and ...

1. After opening, establish a reliable insulation gap to separate the equipment or line that needs to be overhauled from the power supply with an obvious disconnection point to ensure the safety of maintenance personnel and equipment. 2. According to the operation needs, change the line. 3. It can be used to divide and combine small currents in the line, ...

2P means two poles, which means that this air switch has two connection ports, one to connect to the neutral wire and one to the live wire, which is suitable for single-phase circuit connection, or can also be used to connect two-phase power supply in a three-phase circuit. 3P is the meaning of three poles, there are three connection ports, and all of them are ...

T-cam switches and P-block switches are used in a wide range of standard circuits and currents, and the number of combinations of cam switches is virtually unlimited. Different designs, front panels and dedicated switches ensure optimum sensitivity to meet the requirements. Q1: P switch and T switch have ...

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 ...