In addition, the top standards also put forward new requirements for fault ranging. The error must be within ±2%. The longer the line, the further the fault point, the greater the judgment error. Previously, line protection products had ranging function, but there was no such detailed and accurate requirement. To meet this standard, there is almost no need for fault ranging equipment. At the same time, the accident point will be determined by microcomputer protection.

For Okamoto, the results in front of him were enough to satisfy him.

Mitsubishi products responded correctly to the fault at 85% and 90% of the distance points; the judgment was correct during the 90% and 95% test, but the action time was a little longer, and it took 27ms and 30ms to move. Considering that it was a new indicator for the future, this result was very good; 99% of the projects hesitated for a while, but did not determine it or move it. This is also allowed by the new standard, but it was just a shortcoming. 101%, 105%, 110%, and 115% of the four tests also responded correctly, without action.

Okamoto was very satisfied with Mitsubishi's test results. He had completed the most extreme precision and precision of this era.

As for the fault distance measurement, Mitsubishi's distance judgment is stable at around ±3%, which completely meets the original standard ±5%, but there is still a slight difference from the top standard ±2%, but it is also gratifying enough.

Overall, Mitsubishi has delivered a 60-point answer in the face of this new standard.

When analyzing the results, Schroeder also expressed his praise: "This result is already very good with such a high-difficulty and high-precision test."

"Thank you." Okamoto said after thanking, "Perfect electrical components, including distance calculation and signal judgment components, are the most accurate in the industry. Other manufacturers cannot learn about this. We have our own complete component system. At most, they have a way to get our components and barely get a draw, but in this way, it just proves that others are using our technology?"

Okamoto's eyes didn't look at Zhang Yifu. This sentence seemed to be meaningful.

"It's better to explain it more clearly than you can." Zhang Yifu smiled generously, "Don't worry. Our results in this test must be significantly different. Schroeder and Thomas will witness all this. Please stop slandering Hengdian after seeing the results."

"No, you misunderstood. I didn't say Constant Electric." Okamoto shook his head. "Constant Electric has no way to obtain core electrical components like ours. Even if the judgment method and algorithm are the same, the results will definitely be different."

"Come on." Zhang Yifu waved his hand, "He can shut up after seeing it."

In awkward situation, the test for Continuing Electric was launched.

Almost all Chinese people held their breath at this time and were waiting for data. They only hope that Zhang Yifu was not unreasonable. We introduced such sophisticated and advanced evaluation equipment for this moment!

First, use 150km as the benchmark. The first ground fault test is performed at 85% of the distance, and there is not so much time to brew and react. Electricity does not give you time.

Everyone stood behind the main test computer, and the results were quickly displayed on the blue screen.

11ms.

Everyone looked at each other.

Even the testers didn't believe it very much and quickly conducted a second test at this distance.

10ms.

The third time is 12ms, the fourth time is 11ms.

It stabilized at 11ms, almost half of the time when the newly formulated standard was completed, much faster than Mitsubishi.

The extremely long distance has almost no delay to the constant voltage, and is still as fast and accurate as when the line exit failure is made.

Everyone also had some suspicion in their shock. No one said a word and began to conduct a test of 90% distance.

Also. Stable at 11ms.

The judgment time was slightly longer during the 95% distance test, 16ms.

During the 99% distance test, the protection is judged by 20 ms and the area is tripped.

After being confused for a long time in the face of this result, Okamoto finally figured it out with his eyes and said in a hoarse voice: "I understand, Hengdian's products do not judge whether they are within the distance of the line. If there is a fault, they will be cut off immediately, right? This must be the case!"

Faced with such a fast, accurate and stable result, he could only think so. Hengdian did not consider the judgment at the end of the line at all. He would not consider whether it was a fault in the area and jump if there was a problem! Otherwise, it would be impossible to achieve such accurate selectivity! It would be a simple and rough cut-off reaction!

Even Schroeder raised his glasses in confusion: "At least in terms of product description, Changdian does have a range judgment function."

He also began to doubt this point as he said.

Zhang Yifu said nothing: "The results of the fault range measurement test have also come in."

The four fault point distance measurement results are 85%, 91%, 95% and 98%, respectively, with an error of ±1%, and almost zero error.

Schroeder frowned and stared at the screen, which was incredible.

In addition to being surprised, Zhang Yifu said to Okamoto: "Our product description is not moisture. As for whether there is a range judgment function, you just need to continue testing to see it."

Yes, as long as the distance between 101% and 105% is correct, you will know whether the constant voltage is so rough. If selectivity is ignored in order to protect speed, it will inevitably trip if such faults outside the line area are in the face of such faults.

However, the fact is that at 101% distance, the constant current protection makes a correct judgment without action.

In order to ensure the sample stability, such experiments were conducted four times, and Okamoto's expression also experienced a cycle of reincarnation, surprised, surprised, confused, confused, and confused.

The scene fell into a strange silence. Even if Hengdian's products are at the same level as Mitsubishi, no one was surprised. This may just confirm Okamoto's statement, but the situation in front of him was that it completely surpassed, even beyond the understanding of IEC experts.

In such a strange silence, 866a also made correct judgments within the range of 105%, 110%, and 115%, and had no action at all.

In less than two hours, the entire set of tests ended. The constant voltage protection completely met the standard of protecting 20ms within 95% of the line's range of 95%, and even surpassed the new standards in the brewing process, which was perfect.

What is also incredible is the fault ranging result it gives. With this protection, the transmission line does not need to set up another fault ranging device! As long as the signal output from 866a is received, the maintenance worker can immediately find the location to be processed, which undoubtedly greatly reduces the manual line patrol time. The embedded function of microcomputer protection is itself icing on the cake, and the flowers of the Constant Electric are still blooming so brightly!

The final result came out, Hengdian delivered a full-score answer as always, and 866a has fully met the line protection standards for three years or even five years later!

Mitsubishi has achieved the top level of this era, but Hang Electric is simply a future model!

Faced with this result, everyone still didn't say anything for a long time. It was not until Hu Haitao trembled and asked Schroeder to sign with the result, Schroeder looked at Thomas blankly: "You saw it too, right?"

"Yes." Thomas swallowed.

"signature?"

“Sign it…”

"Wait..." Okamoto said with a dark face, "We cannot rule out that they are tampering with the test equipment..."

"Shut up!" Zhang Yifu suddenly pointed at Okamoto and was furious. He had been nagging for so long and could not bear it anymore. "I have said it before. When I see this result, shut up!"

Okamoto stared at Zhang Yifu and gasped: "I won't accept it."

"This doesn't matter." Zhang Yifu looked at the two IEC experts, "Do you agree with this result?"

Schroeder thought about it and said, "We were watching the whole process very carefully. There was no change in the middle. We also understood this set of test equipment and trusted enough. The result was that, there was no problem."

After looking at each other, they nodded and signed the name.

"Impossible! This doesn't make sense!" Okamoto said irritably, covering his head, "How can a device be so precise?! The gap between 99% and 101% is very small! And where do your components come from this response speed? Don't tell me it is made in China!"

Zhang Yifu snorted: "There is nothing to say about this. Most components are imported from the United States, but our software systems, our algorithms, and every formula we have, are thought out and knocked out by our engineers. Here is the soul."

Okamoto was brewing for a long time before he said to Mr. Thomas: "Will the manufacturer ask this standard to be evaluated? Is there any American manufacturer already at this level?"

Thomas shook his head after seeing Schroeder: "I just knew this standard, you know I am not a professional in microcomputer protection..."

Schroeder took over the conversation, and his expression began to be unfriendly to Okamoto: "I can say that no matter the United States or Germany, in my opinion, no line protection product can meet this standard. At least for this type of line distance protection, no one can surpass 866a. Okamoto, please stop your suspicion and accusation of 866a. The facts are already in front of you. I will contact you to clarify this matter after returning to China."

Okamoto's last little flame that was dissatisfied was blown out by Schroeder's basin of water.

IEC experts said this in person, and there is no room for anything.

Schroeder obviously had lost patience with Okamoto, and turned to Zhang Yifu curiously: "Do you mind sharing 866a's technical theory on distance judgment?"
Chapter completed!