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Circuit breaker (MCCB) working principle and function
What is the function of circuit breaker, the working principle of circuit breaker is detailed explanation When the system fails, the protection action of the fault element and the circuit breaker operation failure refuses to trip, trip the adjacent circuit breaker of the substation through the pr...Read more -
AC contactor main feature
First, the three major attributes of the AC contactor: 1. AC contactor coil. Ccoils are usually identified by A1 and A2, and can be simply divided into AC contactors and DC contactors. We often use AC contactors, of which 220 / 380V is the most commonly used: 2. AC Contactor Main contact. L1-L2-L...Read more -
Molded case circuit breaker routine maintenance
The daily maintenance of molded case circuit breakers is the basic work of equipment maintenance and must be institutionalized and standardized. Timely maintenance of equipment should formulate work quotas and material consumption quotas, and evaluate them according to t...Read more -
MCCB selection skill
Plastic shell circuit breaker (plastic shell air insulated circuit breaker) is widely used in the low-voltage power distribution industry, used to cut off or isolate the normal and rated range of the fault current, to ensure the safety of lines and equipment. In addition, according to China’...Read more -
AC contactors selection and maintenance
I. Selection of AC contactors The rated parameters of the contactor are mainly determined according to the voltage, current, power, frequency and working system of the charged equipment. (1) The coil voltage of the contactor is generally selected according to the rated voltage of the control line...Read more -
Military contactors
Military contactors refer to the ability to provide a variety of relay solutions for high reliability and space environments.Aviation and aerospace products were originally manufactured as relays according to the established QPL and MIL standard specifications, and then customized according to th...Read more -
Failure analysis and treatment of AC contactor
I. Analysis and treatment method of fault phenomenon causes 1. After the coil is energized, the contactor does not act or acts innormally A. The coil control circuit is disconnected; see whether the wiring terminal is broken or loose. If there is a break, replace the corresponding wire.If loose, ...Read more -
AC contactor PLC control cabinet such as the protection combination
The AC Contactor (Alternating Current Contactor), as a whole, Continuous improvement in shape and performance, But with the same functionality, Mainly composed of electromagnetic system, contact system, arc extinguishing device and auxiliary components, The electromagnetic system is mainly compos...Read more -
Common electrical components (contactors)
Contactor is a voltage-controlled switching device, suitable for long-distance frequent on and off AC-DC circuit. It belongs to a control device, which is one of the most widely used low-voltage electrical components of power dragging system, machine tool equipment control line and automatic cont...Read more -
Old electrician to teach you contactor wiring formula, one minute to learn contactor wiring method!
Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in power, distribution and electricity occasions.In a broad sense, the contactor refers to the industrial electrical appliances that use the coil to flow through the current to generate a magneti...Read more -
What is the difference with different kinds of relay?
Relay is a common controllable switch, in the electrical control inside is very widely used, today we will understand its classification, common classification for three kinds: general relay, control relay, protection relay. electromagnetic relay First, the general relay has the role of switch, a...Read more -
How does the AC contactor connect wire?
1,3 and 5 For three-phase power supply, (main circuit part) 2,4, and 6 Connect to the three-phase motor A1, A2 are the coils of the contactor, connected to the control circuit, and the motor controlling the circuit part (small control) is realized by controlling the coils of the contactor (A1, A2...Read more
