What exactly is a magnetic latching relay?
Magnetic latching relay is usually a new form of relay created in recent years. It can be also an automatic switch. Like other electromagnetic relays, it might switch on and off the circuit automatically. The distinction is the fact that the usually closed or usually open state of magnetic latching relay completely is dependent upon the action of permanent magnet, along with the switching state of magnetic latching relay is triggered by a particular width of pulse electric signal. Get more info about Jiasheng Electric
Magnetic latching relay is divided into single-phase and three-phase. According to relevant data, the maximum make contact with switching current of magnetic latching relay on the market can attain 150A; the voltage of control coil is divided into dc9v, DC12V, etc. Common electrical life is 10000 occasions; mechanical life is 1000000 occasions; speak to voltage drop is less than 100mV. For that reason, it has the qualities of power saving, steady functionality, compact size, large bearing capacity and superior functionality than common electromagnetic relay.
Magnetic latching relay is primarily made use of in IC card prepayment meter and centralized meter reading system. In recent years, magnetic latching relay has been broadly utilized in the composite switch of reactive power compensation device. In mixture with thyristor, it has come to be the primary switching device in reactive power compensation device to switch large current circuit. It could also be applied in a variety of household appliances and automatic control devices (including lighting control system).
Positive aspects of magnetic latching relay
1. It could work with single or double coils only by pulse excitation.
2. Modest size, PCB kind installation.
3. Low power consumption, robust load capacity.
4. Protected and trusted, extended life.
Structure of magnetic latching relay
The magnetic latching relay is divided into two layers, the upper layer may be the electromagnetic system, and also the lower layer would be 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 located inside the center of your mounting plate, and coils are installed on each sides with the magnet. The U-shaped iron core is set above the coil, as well as the armature is within the iron core to form an annular structure It could be controlled by magnetic field. Both ends in the mounting plate are positioned beside the U-shaped bottom in the iron core, and a pure iron plate is also installed to prevent the interference of external magnetic field.
Principle of magnetic latching relay
The open and closed state in the magnetic latching relay is usually held by the magnetic force generated by the permanent magnet. When the contacts of the relay have to have to be opened or closed (i.e. when the load is connected or cut off), the relay can total the state transition of opening and closing in an immediate by utilizing the constructive (adverse) DC pulse voltage to excite the coil. The power loss is usually less than 1W. Usually, when the contact is inside the hold state, the coil doesn’t want to continue to become energized, and the state on the relay is usually maintained only by the magnetic force in the permanent magnetic steel.
Function of magnetic latching relay
Relay is an automatic switching element with isolation function, which can be widely applied in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one in the most significant control elements.
Commonly, relays have induction mechanism (input component) which can reflect particular input variables (including current, voltage, power, impedance, frequency, temperature, stress, speed, light, and so on.); you’ll find actuators (output components) that may understand “on” and “off” control of controlled circuit; amongst the input component along with the output portion from the relay, there is certainly an intermediate mechanism (drive portion) for coupling and isolating the input, function processing and driving the output aspect.
1. Expand the scope of control. For instance, when the control signal of multi-contact relay reaches a specific worth, the multi-channel circuit may be changed, disconnected and connected as outlined by unique types of contact groups.
2. Zoom in. For instance, sensitive relay, intermediate relay and so on, using a pretty modest quantity of control, can control a higher power circuit.
3. Integrated signal. As an example, when multiple control signals are input into multi winding relay according to the prescribed type, the predetermined control impact is accomplished by way of comparison and synthesis.
4. Automatic, remote control and monitoring. For instance, the relay on the automatic device as well as other electrical appliances can type a program control circuit to realize automatic operation.
Application precautions of magnetic retaining relay
1. The factory status of your magnetic retaining relay is usually speak to closed, but may well alter as a consequence of things for instance transportation or impact during relay installation.Thus, it is necessary to take measures to reset the contacts prior to use.
2. In order for the relay to operate reliably, the voltage applied towards the coil will have to reach the rated voltage as well as the pulse width will have to be greater than three occasions the operating time.
3.Magnetic Relay coils are polar differentiated and coil polarity will have to be specified when ordering.
4. The shape and installation size of magnetic retaining relay can not be changed usually. In the course of choice, attention ought to be paid to irrespective of whether the relay shape size meets the requirements.The peripheral accessories in the relay are customizable.For double-hard-connected products, one side from the lead-out conductive strip need to be flexible; if each sides are rigid, the relay is prone to higher strain after installation, which might modify the parameters of your relay.
0
0