
Schweitzer Engineering Laboratories Field / Application Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 12 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Schweitzer Engineering Laboratories.
Applications Engineer
The interview process was really friendly and helpful. The team was happy to offer guidance on areas where I made mistakes or lacked knowledge. They seemed more interested in my enthusiasm for learning while on the job.
- Could you explain the detection process for Breaker Failure?
Application Engineer
Started with an HR phone call asking about my interest, SEL values, past relay experience, basic qualifications, and visa status. The second step was a 1-hour online interview with four team members who asked technical questions and about my past experience. They also asked why protection is needed and why a CT short is necessary during live conditions, as well as about the equipment's damage curve. They also inquired about my comfort with presentations, teaching, and handling large audiences. The third round involved a PowerPoint presentation on the SEL 710 application guide, a tour of the office, meeting other staff, lunch, and an HR meeting to explain benefits. Afterwards, the hiring manager emailed for a short 15-minute call on Friday afternoon. Since I was at work during my afternoon shift and had a no-phone policy, I couldn't reply the same day. I felt it was unprofessional to reply over the weekend, so I responded on Monday. Since then, there's been no response or feedback, and I expect a rejection, though they could have handled it more professionally, considering SEL values.
- Regarding the SEL 710 motor application guide, can you explain negative sequence current and its effects, as well as which part of the motor is most affected?
- What is the fail-safe mode of the relay, and what occurs during this mode?
- Under what circumstances does negative sequence current flow, and what are the resulting effects?
Applications Engineer
It started with asking about the company's standards and if I had any questions about them. I asked about training. Then there were general questions about the company culture. She also asked about customer service and what the company's main products are, and if I had used them. Standard interview questions were asked, like 'best asset or strength' and 'Why do you want to work at SEL?'. There were also some general or basic electrical questions. I answered most questions using the STAR method. The next interview would be more technical, followed by an interview with local employees, owners, or a panel of people. She said she would call back by a certain date, but didn't. I called to follow up but got no response.
- Can you explain what a power triangle is?
Schweitzer Engineering Laboratories Field / Application Engineer Interview Questions
Quoted word for word from Schweitzer Engineering Laboratories interview reports.
“What's the voltage drop across a diode?”
Read reports →“What occurs when a motor trips?”
Read reports →“What is the formula for zero sequence current?”
Read reports →“What's the formula for zero sequence current?”
Read reports →“How can you determine the RMS value given its peak-to-peak value?”
Read report →“What's the phase angle in a 3-phase system?”
Read report →“What are the two inputs needed for a breaker failure relay?”
Read report →“Under what circumstances does negative sequence current flow, and what are the resulting effects?”
Read report →“What is the fail-safe mode of the relay, and what occurs during this mode?”
Read report →Formats, difficulty and experience
Across all 12 Schweitzer Engineering Laboratories interview reports.