Common sense of management and maintenance of the

2022-09-22
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As the core part and central hub of power communication, the status and role of program-controlled switch is very important. If the program-controlled switch fails, it will inevitably cause the communication to be in a state of paralysis, and pose a threat to the safety production, equipment operation, management and other aspects of the power system. Due to the high requirements for communication guarantee in the production of power system, special attention is paid to the program-controlled switch, which is usually equipped with administrative switch and dispatching switch

the management and maintenance of SPC exchanges can be carried out in hardware and software

I. aspects needing attention in the hardware of SPC exchange

1. The temperature and environment of the machine room. The SPC exchange has high requirements for the temperature and environment of the machine room. The more users, the greater the energy consumption and the heat emitted, so it needs to run in a constant temperature and clean environment. The temperature of the machine room should be kept at about 20 ℃. If the temperature is too high when it is integrated into a production line, it will make it difficult for the machine to dissipate heat, which will make the components of the machine difficult. This makes the manufacturer of thermal insulation materials and the Department responsible for checking the fire protection very troublesome. The parameter changes, the stability of the circuit decreases, and the equipment will be damaged in serious cases. Pay attention to the temperature while maintaining a certain humidity in the machine room. If the machine room is too wet, the metal parts of the machine will rust, corrode the equipment, and even cause the reduction of line insulation, circuit short circuit and other phenomena. If the machine room is too dry, it is easy to generate static electricity, which directly threatens the safety of the switch. According to the regulations, the humidity of the machine room should be maintained at 40% - 60%. The temperature and humidity can be monitored by thermometers and adjusted by installing air conditioners, humidifiers or dehumidifiers when necessary. In addition, the machine room also requires fire and dust prevention measures, and the cable duct should be carefully blocked after construction to prevent small animals from entering

2. Anti static measures. The circuit of SPC exchange adopts large-scale and ultra large-scale integrated circuits to operate. The higher the degree of integration, the lower the level of voltage and impact resistance. The voltage generated by static electricity can sometimes be as high as dozens, hundreds, thousands or tens of thousands of volts. Such a high static voltage is enough to destroy or injure the chip, so the static effect poses a great threat to the SPC exchange. Therefore, the floor of the machine room is required to be paved with anti-static floor. When entering the machine room to work, the maintenance personnel should change anti-static slippers, and wear anti-static gloves when touching the equipment and plugging in and out the circuit board. When working in the machine room, it is not suitable to walk back and forth and run repeatedly to prevent friction from generating static electricity

3. Grounding facilities. It is generally believed that digital communication has strong anti-interference ability, but for program-controlled switches, the quality of grounding facilities will directly affect the operation quality of equipment. If the grounding facilities are poor, it will cause fluctuations in ground potential, which may cause logic errors in the digital circuit operation of the switch. In fact, our company has worked in this industry for so many years, requiring that the signal grounding, power grounding, protective grounding, working grounding, etc. of the switch meet the standards. At the same time, reducing the grounding resistance, thickening the grounding wire and standardizing the grounding are all effective means for the stable operation of the machine

4. Electromagnetic environment. At present, the pollution of electromagnetic environment is very serious. It is not allowed to install high-power radio stations in and near the program-controlled machine room to prevent electromagnetic radiation from affecting the normal operation of the switch. In the machine room, all kinds of cables of the switch should be as far away from the mains AC power line as possible, and the lower ring, connecting ring and intermediate ring should be laid side by side without any obvious permanent deformation, so as to avoid electromagnetic coupling or resistance capacitance coupling interference. When necessary, all kinds of cables should cross each other

II. Several points to be done in the software management of SPC exchanger

1. Pay close attention to the operation of SPC exchanger and find all kinds of alarm information in time

2. Regularly check whether the operation and maintenance terminal, billing system, attendant console, printer, etc. are in normal working state

3. Whether various types of spare circuit boards are well kept

4. After major operations, the data of the switch database should be copied and printed in time, and carefully kept according to the regulations for use in case of urgent need

5. Regularly check whether the lightning protection devices on the audio distribution frame and the security arrangement are effective. Prevent damage to the SPC exchange due to the introduction of AC from the external line due to line failure

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