Over-zero action magnetic latching relay
A magnetic latching relay and zero-crossing technology, applied in relays, circuits, electrical components, etc., can solve problems such as relay explosion, contact burnout, relay damage, etc., to prevent burnout, avoid sparks, and prolong life.
Active Publication Date: 2011-05-18
JIANGSU LINYANG ENERGY CO LTD +1
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AI Technical Summary
Problems solved by technology
The uncertainty of the relationship between the time when the relay wire pack receives current and the phase relationship of the external power supply leads to completely different magnitudes of the current on or off at the instant of the relay action, which can easily lead to burning of the contacts, damage to the relay, and even explosion of the relay.
How to make the current close to zero when the relay is turned on or off, so as to greatly reduce the switching power of the relay and prevent the relay from being damaged, has become a problem that must be solved
Method used
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Embodiment Construction
[0013] Such as figure 1 and 2 As shown, the zero-cross action magnetic latching relay includes a housing 1, a zero-cross electronic circuit 2, a drive wire package 3, a connecting rod 4 and a contact assembly 5, and the zero-cross electronic circuit 2 includes zero-cross detection pieces U1, U2 and a zero-cross Zero resistance R2, drive line package 3 is connected with connecting rod 4 and contact assembly 5, zero-crossing electronic circuit 2 is connected with shaping circuit U6A, shaping circuit U6A is connected with disconnection delay circuit, disconnection delay circuit is connected with drive line package 3 connection; disconnection delay circuit includes disconnection delay chip U3, adjustable resistor R4 and capacitor C1, adjustable resistor R4 is respectively connected with shaping circuit U6A and disconnection delay chip U3, one side of capacitor C1 is connected with zero line , the other side is connected to the disconnection delay chip U3; the drive line package 3...
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The invention relates to an over-zero action magnetic latching relay, comprising a shell, an over-zero electronic circuit, a driving line packet, a connecting rod and a contact component; the over-zero electronic circuit comprises an over-zero detection sheet and an over-zero resistance; the driving line packet is connected with the connecting rod and the contact component; the over-zero action magnetic latching relay is characterized in that the over-zero electronic circuit is connected with a shaping circuit which is connected with a broken delay circuit; and the broken delay circuit is connected with the driving line packet. The broken delay circuit includes broken delay chip, adjustable resistance and capacitance, the adjustable resistance is connected with the shaping circuit and the broken delay chip respectively; the capacitance is connected with the zero line at one side and connected with the broken delay chip at the other side. The over-zero action magnetic latching relay of the invention has the advantages that the suction or breaking action of the relay occurs at the over-zero voltage point of the external power supply, thus avoiding generating large spark when the relay is broken, preventing the burning of the relay, and greatly prolonging the service life of the relay.
Description
technical field [0001] The invention relates to a relay, in particular to a zero-crossing action magnetic latching relay. Background technique [0002] A magnetic field will be generated when a current passes through the coil of the magnetic latching relay. If the direction of this magnetic field is opposite to that of the original magnetic field, the magnetic latching relay will pull in or disconnect. The phase relationship between the time when the current is added and the external power supply is random, that is to say, the time when the magnetic latching relay gets the current may be at the zero phase of the external power supply, or it may be at the 90-degree phase of the external power supply. Of course, it may also be at 150 degrees. The uncertainty of the relationship between the time when the relay wire pack receives current and the phase relationship of the external power supply leads to completely different magnitudes of current on and off at the moment of relay ...
Claims
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IPC IPC(8): H01H47/00H01H47/18
Inventor 苏伟斌
Owner JIANGSU LINYANG ENERGY CO LTD