Tianyi switch - the characteristics of the disconnector are introduced

The so-called PNP and NPN proximity switches are for the type of DC three-wire proximity switch output transistor, and even though many proximity switch output stages use MOS transistors, they are still called the same. Differences: PNP type proximity switch: The type of proximity switch output transistor is P...

(1) Eddy current proximity switch This type of switch is sometimes called an inductive proximity switch. It is the use of conductive objects when they are close to the proximity switch to produce eddy currents inside the object. This eddy current reacts to the proximity switch, causing the internal circuit parameters of the switch to change, so as to identify the presence or absence of ...

(1) First of all, when operating the isolation switch, you should first check that the circuit breaker of the corresponding circuit is indeed in the disconnected position to prevent the load from pulling and closing the isolation switch. (2) When the line is stopped and the power is transmitted, the isolation switch must be pulled and closed in order. During the power failure operation, the circuit breaker must be pulled first, and then ...

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 ...

1. It can isolate the power supply, have obvious disconnection points, and is mostly used for fixed high-voltage equipment. 2. It has an arc extinguishing device and a certain opening and closing speed, and can pass the normal working current and the specified short-circuit circuit in the closing state. 3. It is strictly forbidden to turn on and off the circuit with load.

Unmarked/Z: Inductive/inductive self-diagnosis C/CZ: Capacitive/Capacitive Self-Diagnosis N: NAMUR safety switch X: Analog F: Hall V: Reed type J: Threaded cylindrical B: Cylindrical Q: Angular cylindrical shape ...

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 ...

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、 ...

1. The basic conditions for the use of low-voltage isolation switches (1) The altitude does not exceed 1000 meters; (2) The ambient temperature is not higher than +40°C and not lower than -40°C; (3) The relative humidity is not more than 85% (relative to +20±5°C). 2. The low-voltage isolation switch is not suitable for the following ...

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, ...

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 ...

The working process of the main circuit of the linear power supply is that the input power supply is first converted into a DC power supply by the pre-regulated circuit after the initial AC voltage regulation, and then the linear adjustment element is finely adjusted under the intelligent control of the control circuit and the monolithic microprocessor controller, so that the ...

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. What is the reason why the empty trip cannot be pushed? 1. If the air opening itself is faulty or damaged, the air opening should be replaced with a new one. 2. If the line is caused by a short circuit, the line should be found first, and then reconnected.

1. Through the isolation switch, it plays a good insulating role, so that the whole circuit can be safe and secure, and the maintenance personnel or staff also have enough ability to repair the circuit. 2. At the same time, the low-voltage isolation switch can also change the operation mode of the circuit, which is used in the power plant or gas plant.

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. The current value of the air switch is too low, and the load power is greater than the rated power of the air switch. 2. The load joint is not firm, and the joint is not compressed. 3. If there is a short circuit in the line, check whether the electrical plug is dry. 4. The line is aging and leaking, resulting in both the live wire and the neutral line.

1. Use less plastic switches The switch is composed of a panel, a current carrier, a nozzle and a base, etc., and a good switch is mostly made of stainless steel inlay, which is safe and anti-electric shock. On the contrary, most of the inferior switches are made of plastic, although they are insulated, they are prone to leakage and flammability, and potential safety hazards will occur. 2 ...

The dual-power automatic transfer switch is mainly used in the emergency power supply system, which automatically switches the load circuit from one power supply to another (standby) power supply switching appliance to ensure the continuous and reliable operation of important loads. Therefore, the dual-power automatic transfer switch is often used in important places of electricity consumption.

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 ...