As shown in the illustrated electronic...

🔍 Key Concepts

• Relationship between current setting, instantaneous setting, and time delay / inverse‑time in an electronic overload relay • How a potentiometer working with a capacitor (C2) affects time delay in a protection circuit • Reading the labels on the schematic: Overload Current Setting Pot (R2), Inst. Current Setting Pot, and Time Delay Setting Pot (R6)

💭 Think About

• Look at which components are already identified for overload current and instantaneous current; what functions do R2 and the "Inst. Current Setting Pot" section already serve? • Follow the circuit path from the CT input through to the detector and curve shaping circuits: where does R6 sit, and what other component (like C2) shares that node? • Ask yourself: when a pot is placed in series/parallel with a capacitor leading into shaping/detector circuits, is it more likely controlling how fast the relay reacts, or how much current causes it to react?

✅ Before You Answer

• Verify which labeled component in the drawing already handles the overload current trip setting (pickup level). • Verify which labeled section is called Inst. Current Setting Pot. and note that this corresponds to an instantaneous element. • Check how adjusting R6 would change the RC time constant with C2, and how that relates to an inverse-time / time-delay characteristic, not to protecting the preamp from overcurrent.

As shown in the illustrated electronic overload relay circuit, what is the functional purpose of potentiometer "R6"? See illustration EL-0091.

it is used to set the over current trip setting of the overload relay

it is used to set the instantaneous trip setting of the overload relay

it is used to set the inverse-time function setting of the overload relay

it is used to protect the preamplifier from over current

🔍 Key Concepts

💭 Think About

✅ Before You Answer