Which torque value is specified for a TRQ transient of 6 seconds?

Which torque value is specified for a TRQ transient of 6 seconds?

• A. 108% (10 sec)
• B. 90%
• C. 115% (6 sec)
• D. 103% max

Answer: (C)

Torque transients are allowed to exceed the continuous limit, but only for a limited time. For a transient lasting six seconds, the specified value is 115% of the normal maximum torque. This higher limit is permitted briefly because the system can tolerate a short spike without damage, and heat and stress haven’t built up yet. If the transient lasts longer, the allowable torque drops back toward the continuous limit (for example, a longer six-to-ten second window has different values like 108% for ten seconds). The other options don’t match the six-second window, so they’re not the correct transient value.

Torque transients are allowed to exceed the continuous limit, but only for a limited time. For a transient lasting six seconds, the specified value is 115% of the normal maximum torque. This higher limit is permitted briefly because the system can tolerate a short spike without damage, and heat and stress haven’t built up yet. If the transient lasts longer, the allowable torque drops back toward the continuous limit (for example, a longer six-to-ten second window has different values like 108% for ten seconds). The other options don’t match the six-second window, so they’re not the correct transient value.