What is the NR power-on minimum torque percentage?

What is the NR power-on minimum torque percentage?

• A. 90%
• B. 95%
• C. 101-103%
• D. 103% max

Answer: (B)

The main idea here is what torque the system must be able to deliver right when power is applied, expressed as a percentage of its rated torque. This minimum torque at power-on ensures the drive can start moving the load without stalling or slipping, even under typical startup losses. Choosing 95% reflects a safe, practical buffer: it’s high enough to reliably overcome static friction and startup resistance, but not so high that it implies more than the rated capability. A 90% figure could risk stalls under real-world loads, while numbers above 100% would describe torque exceeding the rating rather than a minimum. Therefore 95% is the correct NR power-on minimum torque percentage.

The main idea here is what torque the system must be able to deliver right when power is applied, expressed as a percentage of its rated torque. This minimum torque at power-on ensures the drive can start moving the load without stalling or slipping, even under typical startup losses.

Choosing 95% reflects a safe, practical buffer: it’s high enough to reliably overcome static friction and startup resistance, but not so high that it implies more than the rated capability. A 90% figure could risk stalls under real-world loads, while numbers above 100% would describe torque exceeding the rating rather than a minimum. Therefore 95% is the correct NR power-on minimum torque percentage.