The general principle of circuit breaker selection - Delixi

Most modern LDOs and switching regulators operate reliably under no-load conditions, and some older power devices require a minimum load to ensure stability, because one of the electrodes that needs to be compensated is affected by the payload resistance. For example, the LM1117 requires a load current of at least 1.7 mA (most ...

What is the voltage regulator can not be connected in parallel, the voltage regulator is not open for a long time, what will be the problem with the voltage regulator still open under normal voltage, is it said that the voltage regulator and the undervoltage lamp is not lit to clarify that the voltage regulator is normal? Will a normally open regulator burn it out at normal voltage? ...

(1) The function is different. An air switch is a kind of circuit breaker that maintains "something", which can maintain the safety of the entire household wiring and appliances, and avoid the overheating and burning of the wires. The leakage maintenance switch is a kind of circuit breaker for maintenance personnel, which can block the circuit in time when leakage is carried out to avoid the danger of electric shock.

Thermal accounting requires information such as power loss, thermal resistance of the package, and ambient temperature. The power loss is calculated in the same way as the efficiency accounting, which is simply the value of the difference between the output input voltage and the input current. The thermal resistance should have a technical standard documented, and if it is not, it is necessary to ask the manufacturer. Basically...

Delixi solid state relay and Delixi communication touch device are more used products, so what are the advantages of solid state relay compared to communication touch device, how should we choose when we can choose? 1. First of all, solid...

Delixi general fan, pump, the requirements for the inverter are simple, only the inverter capacity is equal to the motor capacity. Roots blowers, deep-water pumps, sediment pumps, and fast-changing musical fountains are available in a larger capacity. Lifting...

In the design of Delixi power distribution system, the selective cooperation between the upper and lower levels of the circuit breaker must have "selectivity, rapidity and sensitivity". Selectivity is related to the cooperation of the upper and lower circuit breakers, and the speed and sensitivity are related to the maintenance of the characteristics of the appliance itself and the way the line operates ...

As far as miniature circuit breakers are concerned, 1P+N, 1P, and 2P are generally used as the on-off control of single-phase electrical appliances, but the functions are different. In order to facilitate the user's selection and difference, the difference of the P number of circuit breakers and the selection method are briefly analyzed. ...

Delixi built-in bypass soft starter CDRA-K3 series is a set of soft start, soft parking and multi-functional protection in one of the motor control equipment. Realize a smooth starter motor without impact during the entire starting process. CDRA-K3 series has built-in bypass contactor and control power supply.

Delixi 3P air switch, additional current 630A, additional voltage 380V. The Icu=Ics=70kA of this circuit breaker. When the short-circuit current reaches 70kA, can the circuit breaker still be used? Assuming it works, the ICU is now at its limit, which is paradoxical. Assuming it can't be used, Ics is 70KA, clarifying ...

In view of the regulation and control effect of the transformer in the power system, technicians need to choose the appropriate transformer finishing device operation, so as to play a normal effect. Winding data is the primary problem that transformer devices need to pay attention to, and the effects of devices of different materials are different. Concerning...

Delixi is one of the world's top 500 enterprises, the quality of its switches is excellent, the layout is reasonable, and is deeply liked by the majority of customers. Founded in 1984, China Delixi Holding Group Co., Ltd. is a large-scale group integrating capital operation, brand operation and industrial operation, with a registered capital of 15 ...

　　The principle and operation method of Delixi inverter: 1. No-load energizing test of inverter 1. Ground the grounding terminal of the inverter. 2. Pass the power input terminal of the inverter through the leakage maintenance switch.

Question: Delixi inverter control motor contactor does not start when there is no action? Solution: First check the output status of the controller reflected by the controller panel, and you can compare the 7 units on the panel described in the controller description book.

1) Rectifier The rectifier circuit of the universal inverter consists of a three-phase bridge rectifier bridge. Its function is to rectify the power frequency power supply and supply DC power to the inverter circuit and control circuit. Three-phase AC power supplies are generally required to be introduced into the input of the rectifier bridge through the absorption capacitor and varistor network.

1. Classified according to the operating voltage level Low-voltage electrical appliances: electrical appliances used to communicate circuits below 1200V and DC 1500V to play the role of on/off, protection, control or regulation. High-voltage electrical appliances: communication 1200V or more, DC 1500V or more. ...

1. The environmental requirements of the inverter Ambient temperature - 10 °C - 40 °C; Ambient humidity: The relative humidity does not exceed 90% (no condensation); Other occasions that require no direct sunlight, no corrosive gas and flammable gas, less dust, and an altitude of less than 1000m. ...

1. Its overall inductive skills function is the best, its design does not use electronic equipment, and the environmental adaptability and stability and reliability function are the highest. When the capacity of most power grids is sufficient, the voltage is relatively stable, but with the improvement of electrification and informatization, the pollution of some power grids, ...

Delixi's communication contactor is widely used in industrial electrical, contactor as a kind of electromagnetic switch, its interior is mainly composed of the main and auxiliary contacts and electromagnetic coils, static cores and other parts of the control line connection and breaking. ​ ...

What is a Solid State Relay Solid State Relay (SSR) is a pointless switch composed of microelectronic circuits, discrete electronic devices, and power electronic power devices. The barrier between the control end and the load is completed by a barrier device. The input of the solid state relay is micro...