Looking back at the competitors who were gloating in the corridor, Peng Huading pursed his lips, then stuffed his phone into his trouser bag, turned around and walked towards Wu Shibo, and said, "Director Wu, I want to see the rectifier distribution room."

Wu Shibo was obviously stunned, but many of them returned to normal and said, "Please."

The word "please" in his mouth made Peng Huading inexplicably increase his confidence. When the young crew member opened the computer room on the right side of the corridor, Peng Huading walked in calmly.

Facing him are three cabinets, from the outside to the inside, the DC distribution cabinet, the rectifier, and the AC distribution cabinet. It is about two meters away from the AC distribution cabinet, and a little further inside is the bed where the attendant is on duty for the evening shift at night.

The DC distribution cabinet is responsible for delivering DC power with a quota voltage of minus 48 volts to switches, optical transmission equipment, network routers and other equipment in the fixed network company's computer room.

The middle rectifier is still an old bridge rectifier technology. The basic principle is to first use a step-down transformer to buck the 380-volt AC mains, then use a bridge rectifier to rectify the low-voltage current, and then supply power to the battery or DC distribution cabinet. Instead of adopting the most advanced switching power supply technology at present.

The AC distribution cabinet is connected to the 380-volt AC power grid outside on the one hand, and on the other hand, it is connected to the rectifier input port.

Although the equipment here is old, it is also a standard distribution room equipment.

The step-down rectifier emits a uniform humming sound, and each instrument panel displays normally, and the ground is very clean.

Wu Shibo smiled and said, "You check it carefully. Please give us more suggestions on our maintenance situation, haha."

A factory staff also sarcastically said: "Haha, the leaders of Huakang Company check the work of the fixed network company branch."

Peng Huading ignored their ridicule and ridicule. He originally wanted to take a gamble when he came in, but he was not sure. Because he knew that if he only stared at the battery in the computer room, he would not be able to see any problems with his low skills. Moreover, it was impossible for him to leave too many mistakes on the scene for him to discover. If there were any, they would have been covered up. It would be better to come here to catch up with luck.

Peng Huading looked at the three cabinets while thinking about the scene he saw through the window, and at the same time remembered the scene of taking a taxi here: most of the roads from Nanyuan County to here are sand and gravel roads, and only when leaving the county town and entering the town are better, but even if the cement is exposed, it is still bumpy. Whether it is the road surface or the trees on both sides of the road, they are very dusty. The houses of farmers on the roadside are not high-end, and there are not even a few two-story buildings. The farmers walking on the roadside all look listless...

All of this fully demonstrates that the economy here is underdeveloped, which means that there are definitely not many installed users here, and the switch modules here carry very few phones and consume very little power. In addition, this is a poor rural area, and the supply of municipal power is definitely not good, and perhaps the power is often cut off.

Thinking of this, he asked Wu Shibo: "Director Wu, is this communication accident caused by a long-term power outage in the city power supply?"

Wu Shibo replied: "Yes. But the power outage time does not last more than nine hours, which is very common in rural areas. Logically, your batteries can fully guarantee a load of more than 30 hours and will not cause communication accidents at all."

Peng Huading nodded and thought to himself: "In less than nine hours, this situation is not uncommon in the countryside. Sometimes it is possible to stop in the countryside for two days. Two sets of 400AH batteries can indeed ensure the load supply during this period. There are not many users installed here, so the power consumed by the switch will naturally be small..., and slowly, is the problem here? The reason for the communication accident is that the battery capacity is too large?"

As soon as this question arose in my heart, Peng Huading's eyes lit up.

If you are an outsider who does not understand the performance of the battery, you must think that the larger the capacity of the battery, the better. Because the larger the capacity, the longer the discharge time of the battery under a certain load, the more it can ensure that the switch equipment and optical transmission equipment are used for a longer time after the AC power is interrupted, and can maintain the stability of telephone communication.

But in fact, the load carried by the battery cannot be too small, but it cannot be too large. Before purchasing the battery, designers must pay attention to the matching of equipment load and battery capacity.

Of course, it is not possible to have a relatively small load on the battery. In that case, the power will be out of power before being discharged for a few minutes after the power outage, and a communication accident will definitely occur. However, if the load is too small, or the battery capacity is too large, the damage to the battery will be severe if it is used for a long time, which can easily cause irreversible damage to the battery. Once the battery is damaged, communication accidents will naturally occur. However, such damage to the battery must be used for a period of time before it can occur.

Although Peng Huading is not an expert in battery, he is knowledgeable about electromechanical knowledge and still knows the disadvantages of small current discharge: if the battery is released at the same time as a large current and small current (referring to the fact that all the electric energy accumulated in the battery is discharged and there is no more current output), the battery after the large current is released can also restore most of the battery's performance through scientific charging methods. However, if the battery is released by small current, its performance is often difficult to repair, especially if the charging method is not very scientific, they will permanently damage and turn into waste.

Even if the batteries are not let go, they are discharged in a small current for a long time. If they are charged, their performance will become worse and worse, and their actual capacity will become smaller and smaller until they are scrapped. In fact, this phenomenon is easy to understand. Just like when we buy a mobile phone, many times merchants will tell you to clean the battery of the mobile phone and then charge it, and then cleanly and charge it, so that the battery capacity can be guaranteed to be larger.

The large current and small current mentioned here are relative to the battery capacity. The same amount of current is relatively large current for the small capacity battery, but now the large capacity battery has a small current.

In other words, the battery must be equipped scientifically based on the load power.

Thinking of the economic situation around the town and the town, Peng Huading guessed that this computer room would not be able to use a battery pack as large as 400AH, and the capacity of 100AH ​​should be almost the same.

It is precisely because two sets of 400AH batteries are used here that the battery can only be discharged in a small current and charged in a small current for a long time. Over time, the performance of the battery will deteriorate and its actual capacity will be greatly reduced. It is nominally 400AH, and perhaps less than 40AH. Therefore, as soon as the main power outside is shut down, their electricity will be quickly exhausted and a communication accident occurs!

The more I thought about it, the more I felt that it made sense.

However, when he looked at the data displayed on the load ammeter on the rectifier, he couldn't help but feel disappointed: because the number displayed on the DC meter is fifty-five amperes, although this number is a little low, it is still within the optimal load range of these two sets of batteries!

"Why is it completely different from what I expected? My guess is wrong?" Peng Huading looked back and forth on several mechanical meters. After looking at the meter on the rectifier cabinet, he looked at the meter on the distribution cabinet again, and asked himself disbelief: "Is there so many users installing telephones here?..., it's impossible."

When he looked at Wu Shibo accidentally, he found that Wu Shibo's eyes were a little dodged, as if he wanted to stop him from looking again.
Chapter completed!