78: Bringing his wife and children to Harbin Institute of Technology

Ye Bingwen glanced at the Jeep.

The back door was open, and a young man was unloading a wooden crate from the car.

It contains some testing instruments.

"What did they say when they arrived?"

"They say it's a routine inspection, but they have to go through all the motor manufacturing companies in the province."

Mr. Li put the cigarette back in his pocket.

"But I've inquired, and there aren't many motor manufacturers in the entire province, so why did they choose to come here first?"

Ye Bingwen remained silent.

He walked to the jeep, and the young man surnamed Gu looked up at him.

"Hello, I am Ye Bingwen, the technical lead here."

Ye Bingwen extended his hand.

Gu Ming squeezed it briefly, then quickly released it.

"Gu Ming, from the Quality Inspection Department."

"What specific cooperation do you require from me for this inspection? What documents do you need to see?"

"You should see everything you need to see."

Gu Ming carried the instruments into the workshop.

"First, inspect the site, then conduct random product checks. Prepare the production and quality records for the past three months."

"I need to reconcile the accounts later."

Ye Bingwen followed him into the workshop.

Production is proceeding normally in the workshop.

Gu Ming walked around the workshop.

"That's all the terms?"

He asked Ye Bingwen.

"Isn't it a bit too rudimentary?"

"The equipment is rudimentary, but the processes and quality control are all done according to standards."

Ye Bingwen said.

"I'll see what happens first."

Gu Ming took out a multimeter and an insulation resistance tester from the box and walked to the nearest assembled motor.

Ye Bingwen gave him the production batch number.

Gu Ming didn't ask any more questions and started connecting the test cable.

Ye Bingwen stood by and watched, initially not noticing anything amiss.

Gu Ming's hand-connection movements weren't exactly skillful, but they weren't amateurs either; he seemed like someone who had only recently entered the industry.

But when Gu Ming started measuring the insulation resistance, Ye Bingwen's eyes narrowed.

Gu Ming started measuring before the motor was fully discharged, and did not make any temperature correction after the reading was obtained.

This is the most basic operation for motor testing—the motor has just been run or has just completed a withstand voltage test.

There will be residual charge in the winding. If you measure it directly without waiting for it to be discharged, the reading will be too high or too low, and it will be completely inaccurate.

0.8 trillion ohms.

Gu Ming looked up and glanced at Ye Bingwen.

"The insulation resistance requirement for civilian motors is at least two megohms, right? Yours is only 0.8, which is unacceptable."

The sound wasn't loud, but several workers heard it and stopped what they were doing.

Liu Xiaojun stood up from the winding machine and looked over here with a frown.

Ye Bingwen was not in a hurry.

"Mr. Gu, this motor has just undergone a withstand voltage test, and there is still residual charge inside."

"If you take the measurement before the discharge is complete, the reading will definitely be inaccurate. If it's convenient for you, I can discharge the power for you and take the measurement again."

Gu Ming's expression changed.

"Do I need you to teach me how to do the testing?"

"It's not teaching, it's reminding."

Ye Bingwen spoke calmly.

"The testing specifications clearly require that the insulation resistance must be fully discharged before testing."

"If you're not comfortable with that, we can discharge the electricity in front of you and then retest it."

Master Li stood in front of Gu Ming and looked at his test line.

"Young man, you've connected the grounding wire incorrectly. The protective terminal is connected incorrectly, which will cause the measured value to be inaccurate."

Gu Ming's expression turned even uglier.

Are you two questioning my testing qualifications?

"It's not a questioning, it's an attitude of being responsible for the test results."

Ye Bingwen said.

"Mr. Gu, you came to inspect the equipment to help us find problems, not to cause trouble."

"If a misdiagnosis occurs due to a problem with the testing method, it wouldn't be good for you either, would it?"

Gu Ming didn't say anything.

He stood there, the test cable still connected to the motor in his hand, his expression a little stiff.

Just then, someone walked in from outside.

"Old Gu, is the test done yet?"

He glanced at Ye Bingwen.

"Are you the person in charge here? That college student surnamed Ye?"

"I am Ye Bingwen. And you are?"

"From the Provincial Department of Economic Management, Ma Li."

Ma Li spoke casually.

"I'm accompanying Mr. Gu for a routine check-up today. Just cooperate with him. Don't be too nervous."

Ye Bingwen looked at Ma Li, and another name popped into his mind from the list.

In Zhao Jianguo's network of connections within the Provincial Department of Industry, Ma Li of the Economic Management Division was one of the key figures.

"Director Ma, we have no problem cooperating."

"But there are standardized procedures for motor testing. I was just suggesting that Engineer Gu follow the procedures to avoid errors in the results."

Why bother talking so much about whether it's standardized or not?

Ma Li waved his hand.

"Old Gu has been doing testing for a while now, you don't need to worry about him."

"Finish the sampling on the machines that need to be sampled first, then you can get back to work."

Gu Ming then disconnected the test cable and walked to the other motor.

This time he still didn't follow the rules.

No discharge, no correction, the grounding wire is still connected incorrectly.

The reading came out, and it was a few tenths of a megaohm.

Gu Ming jotted down a few numbers in his notebook and looked up at Ye Bingwen.

"We tested three units, and all of them failed. There's a problem with your insulation process; you need to suspend production for rectification."

Master Li stood in front of Gu Ming.

"You say it's unqualified, so it's unqualified? Your testing method is flawed from the start."

"The same motor was sent to the provincial quality inspection station for testing, and the data came back excellent."

Ma Li walked over from the side.

"Old comrade, it's normal for the provincial department to come for an inspection, don't get agitated. We can discuss any issues when we get back; let's just follow the procedures today."

"What procedure are you following? You can't even get the tests right, what data are you using to support your claims?"

Master Li's voice grew louder.

Liu Xiaojun walked over from the winding machine and stood behind Master Li, his fists clenched.

Ye Bingwen grabbed Master Li's arm.

"Master Li, don't worry."

He turned to Gu Ming and said.

"Mr. Gu, I respect your opinion that the motor is substandard."

"But I need you to provide a formal test report, specifying the testing basis, testing methods, and specific data."

"This is the program, it should be fine, right?"

Gu Ming glanced at Ma Li.

Ma Li answered for him.

"Of course we'll produce it. You should stop production for now, and we'll get back and put together the report."

"Official documents will be sent to your factory and school. Make the necessary rectifications and take appropriate action."

"Director Ma, I have two requests."

Ye Bingwen said.

"First, we hope to retest it in front of you and Engineer Gu using standardized testing methods."

"If the retest results are indeed unsatisfactory, we will accept it."

"Secondly, if the retest results are satisfactory, I hope you and Engineer Gu can explain the problems that existed during the testing process in the report."

Ma Li's smile vanished.

"Xiao Ye, do you not trust us?"

"It's not that we don't trust them, it's that technical issues must be addressed with technology."

Ye Bingwen's tone was neither humble nor arrogant.

"You're from the Management Department, and Engineer Gu is from the Quality Inspection Department. We both do technical work."

"The accuracy of the data and the standardization of the testing methods should be our common bottom line."

Ma Li's smile vanished completely.

"OK."

He looked at Gu Ming.

"Old Gu, test him according to the procedure, and make him convinced."

Gu Ming's expression wasn't good, but he still reconnected the line.