Magnetic latching relay can be a new variety of relay created in current years. It truly is also an automatic switch. Like other electromagnetic relays, it might switch on and off the circuit automatically. The distinction is the fact that the generally closed or normally open state of magnetic latching relay fully depends on the action of permanent magnet, plus the switching state of magnetic latching relay is triggered by a certain width of pulse electric signal. Get far more info about Solenoid Coils
Magnetic latching relay is divided into single-phase and three-phase. In line with relevant details, the maximum contact switching present of magnetic latching relay in the marketplace can reach 150A; the voltage of control coil is divided into dc9v, DC12V, and so forth. Common electrical life is 10000 instances; mechanical life is 1000000 times; speak to voltage drop is much less than 100mV. As a result, it has the traits of power saving, stable functionality, smaller size, large bearing capacity and superior overall performance than common electromagnetic relay.
Magnetic latching relay is primarily utilised in IC card prepayment meter and centralized meter reading system. In recent years, magnetic latching relay has been broadly made use of within the composite switch of reactive power compensation device. In combination with thyristor, it has grow to be the key switching device in reactive power compensation device to switch significant current circuit. It may also be made use of in numerous household appliances and automatic control devices (for example lighting control system).
Advantages of magnetic latching relay
1. It could work with single or double coils only by pulse excitation.
2. Tiny size, PCB kind installation.
3. Low power consumption, robust load capacity.
4. Protected and reliable, extended life.
Structure of magnetic latching relay
The magnetic latching relay is divided into two layers, the upper layer could be the electromagnetic system, plus the reduced layer is the speak to system. The electromagnetic system adopts the flat direct acting magnetic circuit system, which involves magnet, coil, armature, iron core and mounting plate. The magnet is situated inside the center of the mounting plate, and coils are installed on both sides on the magnet. The U-shaped iron core is set above the coil, plus the armature is within the iron core to form an annular structure It could be controlled by magnetic field. Each ends on the mounting plate are situated beside the U-shaped bottom from the iron core, and a pure iron plate is also installed to stop the interference of external magnetic field.
Principle of magnetic latching relay
The open and closed state from the magnetic latching relay is normally held by the magnetic force generated by the permanent magnet. When the contacts of the relay require to become opened or closed (i.e. when the load is connected or reduce off), the relay can comprehensive the state transition of opening and closing in an instant by utilizing the constructive (negative) DC pulse voltage to excite the coil. The power loss is typically less than 1W. Generally, when the get in touch with is inside the hold state, the coil does not have to have to continue to become energized, along with the state from the relay can be maintained only by the magnetic force on the permanent magnetic steel.
Function of magnetic latching relay
Relay is definitely an automatic switching element with isolation function, which is extensively applied in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of your most significant control components.
Typically, relays have induction mechanism (input element) which can reflect certain input variables (such as present, voltage, power, impedance, frequency, temperature, stress, speed, light, and so on.); there are actuators (output components) that can recognize "on" and "off" control of controlled circuit; among the input portion along with the output aspect from the relay, there's an intermediate mechanism (drive portion) for coupling and isolating the input, function processing and driving the output portion.
1. Expand the scope of control. For example, when the control signal of multi-contact relay reaches a certain worth, the multi-channel circuit is usually changed, disconnected and connected in accordance with different forms of contact groups.
2. Zoom in. For example, sensitive relay, intermediate relay and so on, having a very small level of control, can control a higher power circuit.
3. Integrated signal. For example, when several control signals are input into multi winding relay based on the prescribed type, the predetermined control impact is accomplished through comparison and synthesis.
4. Automatic, remote control and monitoring. As an example, the relay on the automatic device as well as other electrical appliances can form a program control circuit to recognize automatic operation.
Application precautions of magnetic retaining relay
1. The factory status from the magnetic retaining relay is normally speak to closed, but may possibly alter because of factors which include transportation or influence during relay installation.Therefore, it is essential to take measures to reset the contacts just before use.
2. In order for the relay to operate reliably, the voltage applied to the coil ought to reach the rated voltage and the pulse width must be greater than three times the operating time.
3.Magnetic Relay coils are polar differentiated and coil polarity have to be specified when ordering.
4. The shape and installation size of magnetic retaining relay can not be changed normally. In the course of selection, interest really should be paid to irrespective of whether the relay shape size meets the needs.The peripheral accessories on the relay are customizable.For double-hard-connected products, one side of your lead-out conductive strip need to be flexible; if both sides are rigid, the relay is prone to high anxiety following installation, which may perhaps modify the parameters with the relay.
