What is a magnetic latching relay?

Magnetic latching relay is really a new variety of relay created in current years. It 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 ordinarily closed or usually open state of magnetic latching relay completely depends on the action of permanent magnet, plus the switching state of magnetic latching relay is triggered by a specific width of pulse electric signal. Get additional details about Jiasheng Electric

Magnetic latching relay is divided into single-phase and three-phase. As outlined by relevant details, the maximum get in touch with switching current of magnetic latching relay available on the market can reach 150A; the voltage of control coil is divided into dc9v, DC12V, and so on. Basic 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 qualities of power saving, stable overall performance, tiny size, huge bearing capacity and superior performance than general electromagnetic relay.

Magnetic latching relay is mainly applied in IC card prepayment meter and centralized meter reading system. In current years, magnetic latching relay has been broadly utilized in the composite switch of reactive power compensation device. In mixture with thyristor, it has turn into the key switching device in reactive power compensation device to switch significant current circuit. It might also be made use of in numerous household appliances and automatic control devices (including lighting control system).

Advantages of magnetic latching relay

1. It can work with single or double coils only by pulse excitation.

2. Little size, PCB sort installation.

3. Low power consumption, robust load capacity.

4. Safe and dependable, extended life.

Structure of magnetic latching relay

The magnetic latching relay is divided into two layers, the upper layer is definitely the electromagnetic system, and also the decrease layer could be the get in touch with 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 within the center in the mounting plate, and coils are installed on both sides of your magnet. The U-shaped iron core is set above the coil, as well as the armature is within the iron core to type an annular structure It may be controlled by magnetic field. Both ends on the mounting plate are situated beside the U-shaped bottom on the iron core, plus 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 with the magnetic latching relay is normally held by the magnetic force generated by the permanent magnet. When the contacts with the relay need to be opened or closed (i.e. when the load is connected or reduce off), the relay can total the state transition of opening and closing in an instant by utilizing the positive (unfavorable) DC pulse voltage to excite the coil. The power loss is frequently significantly less than 1W. Commonly, when the get in touch with is inside the hold state, the coil does not want to continue to become energized, plus the state from the relay might be maintained only by the magnetic force from the permanent magnetic steel.

Function of magnetic latching relay

Relay is an automatic switching element with isolation function, that is widely utilised in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of the most important control elements.

Normally, relays have induction mechanism (input portion) which can reflect certain input variables (including current, voltage, power, impedance, frequency, temperature, pressure, speed, light, and so on.); there are actually actuators (output parts) that may comprehend “on” and “off” control of controlled circuit; between the input element as well as the output aspect from the relay, there is certainly an intermediate mechanism (drive portion) for coupling and isolating the input, function processing and driving the output element.

1. Expand the scope of control. One example is, when the control signal of multi-contact relay reaches a specific worth, the multi-channel circuit is usually changed, disconnected and connected according to distinct forms of speak to groups.

2. Zoom in. By way of example, sensitive relay, intermediate relay and so on, with a incredibly small quantity of control, can control a high power circuit.

3. Integrated signal. By way of example, when several control signals are input into multi winding relay in line with the prescribed form, the predetermined control effect is accomplished through comparison and synthesis.

4. Automatic, remote control and monitoring. One example is, the relay around the automatic device and also other electrical appliances can form a program control circuit to understand automatic operation.

Application precautions of magnetic retaining relay

1. The factory status in the magnetic retaining relay is usually speak to closed, but may perhaps adjust as a result of factors for example transportation or impact throughout relay installation.For that reason, it can be necessary to take measures to reset the contacts ahead of use.

2. In order for the relay to operate reliably, the voltage applied to the coil should attain the rated voltage along with the pulse width ought to be more than 3 instances the operating time.

3.Magnetic Relay coils are polar differentiated and coil polarity must be specified when ordering.

4. The shape and installation size of magnetic retaining relay can not be changed typically. Throughout choice, focus must be paid to no matter if the relay shape size meets the specifications.The peripheral accessories on the relay are customizable.For double-hard-connected products, one side in the lead-out conductive strip need to be flexible; if each sides are rigid, the relay is prone to high tension following installation, which may well modify the parameters of the relay.

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