Magnetic latching relay is usually a new style of relay developed in recent years. It is actually also an automatic switch. Like other electromagnetic relays, it could switch on and off the circuit automatically. The difference is the fact that the commonly closed or generally open state of magnetic latching relay fully is dependent upon the action of permanent magnet, plus the switching state of magnetic latching relay is triggered by a particular width of pulse electric signal. Get additional data about Latching Relays
Magnetic latching relay is divided into single-phase and three-phase. As outlined by relevant information and facts, the maximum make contact with switching current of magnetic latching relay available can reach 150A; the voltage of control coil is divided into dc9v, DC12V, and so on. Basic electrical life is 10000 occasions; mechanical life is 1000000 occasions; contact voltage drop is much less than 100mV. Therefore, it has the characteristics of power saving, stable efficiency, tiny size, large bearing capacity and superior functionality than general electromagnetic relay.
Magnetic latching relay is primarily used in IC card prepayment meter and centralized meter reading system. In recent years, magnetic latching relay has been widely applied within the composite switch of reactive power compensation device. In mixture with thyristor, it has become the key switching device in reactive power compensation device to switch huge current circuit. It can also be used in many household appliances and automatic control devices (for instance lighting control system).
Advantages of magnetic latching relay
1. It may work with single or double coils only by pulse excitation.
2. Little size, PCB sort installation.
3. Low power consumption, powerful load capacity.
4. Secure and reliable, lengthy life.
Structure of magnetic latching relay
The magnetic latching relay is divided into two layers, the upper layer will be the electromagnetic system, plus the lower layer is the contact system. The electromagnetic system adopts the flat direct acting magnetic circuit system, which contains magnet, coil, armature, iron core and mounting plate. The magnet is located inside the center on the mounting plate, and coils are installed on both sides from the magnet. The U-shaped iron core is set above the coil, along with the armature is in the iron core to form an annular structure It may be controlled by magnetic field. Both ends of your mounting plate are situated beside the U-shaped bottom of the iron core, plus 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 with the magnetic latching relay is generally held by the magnetic force generated by the permanent magnet. When the contacts with the relay have to have to become opened or closed (i.e. when the load is connected or cut off), the relay can comprehensive the state transition of opening and closing in an immediate by utilizing the positive (damaging) DC pulse voltage to excite the coil. The power loss is typically significantly less than 1W. Ordinarily, when the get in touch with is inside the hold state, the coil will not need to have to continue to become energized, along with the state in the relay may be maintained only by the magnetic force in the permanent magnetic steel.
Function of magnetic latching relay
Relay is definitely an automatic switching element with isolation function, which is broadly used in remote control, telemetry, communication, automatic control, mechatronics and power electronic gear, and is one from the most important control elements.
Frequently, relays have induction mechanism (input aspect) which can reflect certain input variables (for example existing, voltage, power, impedance, frequency, temperature, pressure, speed, light, and so on.); there are actually actuators (output parts) which can realize "on" and "off" control of controlled circuit; amongst the input portion and also the output aspect with the relay, there's an intermediate mechanism (drive element) for coupling and isolating the input, function processing and driving the output component.
1. Expand the scope of control. One example is, when the control signal of multi-contact relay reaches a specific value, the multi-channel circuit is usually changed, disconnected and connected according to distinctive forms of speak to groups.
2. Zoom in. For example, sensitive relay, intermediate relay and so on, using a incredibly modest quantity of control, can control a higher power circuit.
3. Integrated signal. As an example, when a number of control signals are input into multi winding relay based on the prescribed kind, the predetermined control impact is achieved by way of comparison and synthesis.
4. Automatic, remote control and monitoring. For instance, the relay around the automatic device and other electrical appliances can kind a program control circuit to comprehend automatic operation.
Application precautions of magnetic retaining relay
1. The factory status on the magnetic retaining relay is generally speak to closed, but may possibly transform on account of elements like transportation or influence through relay installation.For that reason, it can be essential to take measures to reset the contacts before use.
2. In order for the relay to operate reliably, the voltage applied towards the coil must attain the rated voltage as well as the pulse width ought to be more than three 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. For the duration of selection, focus must be paid to regardless of whether the relay shape size meets the specifications.The peripheral accessories of your relay are customizable.For double-hard-connected products, one side of your lead-out conductive strip have to be flexible; if each sides are rigid, the relay is prone to high anxiety just after installation, which may perhaps adjust the parameters of the relay.
Leading magnetic latching relay manufacturer in China, specializes in researching, producing magnetic relay, pneumatic cylinder, solenoid coils.
