VE3008 12P6381X022 KJ2005X1-MQ1 | EMERSON | Strengthen lightning and surge protection

Description

VE3008 12P6381X022 KJ2005X1-MQ1 | EMERSON | Strengthen lightning and surge protection

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Upward direction: The E1 signal input to the E1 interface is first decoded by the HDB3 decoding module, and the decoded NRZ code is sent to the E1 unframed circuit. The E1 unframed circuit decodes the effective data of 30 time slots according to the frame structure of G.704. The effective data of each time slot in VE3008 12P6381X022 KJ2005X1-MQ1 is sent to their respective IP packaging circuits to convert it into Ethernet packets that comply with the IEEE 802.3 standard and sent to the front-end processor.

Downward direction: Each IP packet receiving circuit receives IP packets that meet its own time slot port transmitted from the front-end machine, extracts valid data after unpacking, and inserts the data into the corresponding time slot of the ST bus. The E1 framing circuit converts the ST bus containing data from each time slot into a standard NRZ stream according to the recommendation of G.704, and forms a standard HDB3 signal through the HDB3 encoding circuit.

The application environment of the power system is special and requires high reliability. In the networking scheme proposed in this article, the VE3008 12P6381X022 KJ2005X1-MQ1 interface cable needs to be extended from the communication room to the automation room, with a long transmission distance and exposed to complex electromagnetic environments, making it susceptible to surge impacts and even lightning strikes. To ensure the safety and reliability of the interface, it is necessary to strengthen the design of lightning protection and surge protection.

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