New Upgrades - A new member of the warning light family reports

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 ...

The meaning is different, the scope of application is different, and the role is different. Air opening C represents the current, and the D model represents the power. The scope of use is different. If it is a household electricity, the air switch of the C model is generally chosen. The role is different. Type C it is used for home lighting use, Type D is suitable for ...

1) Clean the dust on the surface of the porcelain, check whether the surface of the porcelain is glazed or damaged, whether there are cracks and flashover marks, and whether the iron and porcelain joints of the insulator are firm. If the damage is severe, it should be replaced; 2) Wipe the oil stains on the blades, contacts or fingers with gasoline and check the contact ...

Conventional domestic travel switch LX19-001/111 in the LX19 series, LXK3-20S/T in the LXK3 series, JLXK1 series JLXK1-111/411/511 in the conventional travel switch are the most representative.

1. Determine the type and protection form of the circuit breaker according to the requirements of the line for protection - determine the selection of frame type, device type or current limiting type. 2. The rated voltage UN of the circuit breaker should be equal to or greater than the rated voltage of the protected line. 3. The rated voltage of the circuit breaker undervoltage tripper ...

(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. First open all the packages of the newly bought limit switch, confirm that the parts in each package are not missing and complete, and then discharge all the parts in turn. 2. Then open the body part of the limit switch, as long as you loosen the screws with a screwdriver.

The socket, lamp head, kitchen, bathroom, refrigerator, air conditioner of each route should be put out separately, and each route should have a separate air switch, high-power rooms, such as kitchens and bathrooms, the line of more than 4 square millimeters should reach 20A, and the general lamp head line should only be 16A, and each line ...

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 ...

Internal accessories Auxiliary contact: The auxiliary contact is the contact mechanically linked by the main circuit of the circuit breaker, which is mainly used for the display of the circuit breaker opening and closing status, and is connected to the control circuit of the circuit breaker through the opening and closing of the circuit breaker to control or interlock its related electrical appliances. For example, to ...

1) Ambient air temperature: The upper limit of ambient air temperature is +40°C, the lower limit of ambient air temperature is -5°C, and the average value of ambient air temperature for 24h does not exceed +35°C 2) Altitude: The altitude of the installation site does not exceed 2000m. 3) Atmospheric conditions: Atmospheric relative humidity in the surrounding air ...

1. Change the reference current of the feedback module Regulating the reference current is the most basic way to regulate the output current of a switching power supply, and it can usually be achieved by rotating a potentiometer or toggling a switch. Changing the reference current allows the magnitude of the feedback current to be compared with it, so as to control the switch ...

1. It can isolate the power supply, with a significant disconnection point, and is mostly used for fixed high-voltage devices; 2. It has arc extinguishing equipment and a certain opening and closing rate, and can pass through the normal working current and the specified short-circuit circuit in the case of closing; 3. It is forbidden to connect and cut off the circuit with load, ...

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.

Ambient air temperature: upper ambient air temperature +40°C; The lower limit of ambient air temperature is -5°C; The average temperature of the ambient air for 24 hours does not exceed +35 ° C. Altitude: The altitude of the installation site does not exceed 2000m. Atmospheric conditions: Atmospheric relative humidity at ambient air temperature of +4 ...

1. Frame circuit breaker (universal type) - ACB: Rated current: In principle, frame circuit breakers are required for rated currents above 630A, and molded case circuit breakers are generally below 630A. It can be seen that the rated current of the frame circuit breaker is much larger, generally 630A-6300A. In addition in segments can ...

1. For vertical installation, the switch frame, closing mechanism, cable sheath, and protective steel pipe should be reliably grounded (not connected in series). 2. Before operation, several no-load opening and closing operations should be carried out, and each rotating part should be free of jamming, closing in place, and there should be enough safety distance after opening. ...

Reduces EMI interference The metal shell is used as a shield to reduce the interference of external electromagnetic field radiation. To reduce electromagnetic interference from the power line input, an EMI filter is added to the power supply input. 　　At the output, capacitors with good high-frequency performance and low ESR are used The use of polymer solids ...

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) 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 ...