ಅಧಿಕ ಲೋಡ್ ಸರ್ಕೃತ ಟ್ರಿಪ್ ಮತ್ತು ಶಾರ್ಟ್ ಸರ್ಕೃತ ಟ್ರಿಪ್ ನ ವೇಗದಲ್ಲಿ ಯಾವ ವ್ಯತ್ಯಾಸವಿದೆ?

ಓವರ್ಲೋಡ್ ಮತ್ತು ಷಾರ್ಟ್-ಸರ್ಕಿಟ್ ಪ್ರೊಟೆಕ್ಷನ್ ನ ಟ್ರಿಪ್ ವೇಗದಲ್ಲಿ ಏನು ವ್ಯತ್ಯಾಸವಿದೆ?

ओवरलोड सर्किट ट्रिपिंग और शॉर्ट-सर्किट ट्रिपिंग के बीच गति में महत्वपूर्ण अंतर होता है, जो उनके संचालन सिद्धांत और सुरक्षा उद्देश्यों के कारण होता है। यहाँ एक विस्तृत स्पष्टीकरण है:

1. ಓವರ್ಲೋಡ್ ಪ್ರೊಟೆಕ್ಷನ್ (Overload Protection)

ಪರಿಭಾಷೆ

ओवरलोड एक स्थिति का संकेत देता है जहाँ परिपथ में धारा इसके रेटेड मान से अधिक हो जाती है, लेकिन शॉर्ट-सर्किट के स्तर तक नहीं पहुंचती। ओवरलोड आमतौर पर लंबे समय तक अतिधारा के कारण होता है, जो तारों के अतिताप, आइसोलेशन क्षति और अन्य समस्याओं का कारण बन सकता है।

ट्रिप वेग

• slow response: Overload protection is typically designed for slow response because overload currents can persist for a long time before causing damage. Overload protectors, such as thermal-magnetic circuit breakers, usually have a time delay mechanism that allows short-term overcurrents to pass, but will trip if the current remains above the rated value for an extended period.

• Time-Current Characteristics: The time-current curve (TCC) of an overload protector shows that the trip time decreases as the overload current increases, but it generally still requires several seconds to several minutes.

ಅನ್ವಯಗಳು

• Residential Circuits: Circuit breakers in residential circuits often include overload protection to prevent overheating and fires.

• Industrial Equipment: Overload protectors in industrial equipment are used to protect motors and other electrical devices from long-term overcurrent damage.

2. ಷಾರ್ಟ್-ಸರ್ಕಿಟ್ ಪ್ರೊಟೆಕ್ಷನ್ (Short-Circuit Protection)

ಪರಿಭಾಷೆ

short circuit refers to an abnormal low-impedance connection between two points in a circuit, causing a sudden and dramatic increase in current, far exceeding the normal operating current. Short-circuit currents are typically very high and can cause severe damage to equipment, fires, and even explosions.

Trip Speed

• Fast Response: Short-circuit protection is designed for fast response because short-circuit currents are extremely high and can cause significant damage within a very short time. Short-circuit protectors, such as instantaneous circuit breakers, are typically designed to trip within a few milliseconds, quickly cutting off the current.

• Instantaneous Tripping: The time-current curve of a short-circuit protector shows that the device will trip immediately when the current exceeds a certain threshold, without any time delay.

ಅನ್ವಯಗಳು

• Residential Circuits: Circuit breakers in residential circuits often include short-circuit protection to prevent fires and equipment damage caused by short circuits.

• Industrial Equipment: Short-circuit protectors in industrial equipment are used to protect complex electrical systems from extensive damage caused by short circuits.

ಮೊದಲು

• Overload Protection: Designed for slow response, allowing short-term overcurrents to pass but tripping if the current remains above the rated value for an extended period. Typically requires several seconds to several minutes.

• Short-Circuit Protection: Designed for fast response, tripping within a few milliseconds to quickly cut off the current and prevent significant damage within a short time.

Understanding the speed differences between these two protection mechanisms helps in better designing and maintaining circuits to ensure their safety and reliable operation.