Distance Protection Relay

1. Question: What is the common theory behind the operation of the listed thermal overload relays? Answer: The common theory behind the operation of the listed thermal overload relays is the thermal relay theory, except for one which operates on the voltage relay theory. 2. Question: Are all the listed thermal overload relays designed for long-distance control applications? Answer: Yes, all the listed thermal overload relays are designed for long-distance control applications, as indicated by their product descriptions. 3. Question: What is the contact load capacity for most of the thermal overload relays mentioned? Answer: Most of the thermal overload relays mentioned have a low power contact load capacity. 4. Question: Do all the thermal overload relays have a protective feature? Answer: Yes, all the thermal overload relays mentioned have a sealed protect feature. 5. Question: Is the size of all the thermal overload relays the same? Answer: Yes, all the thermal overload relays mentioned are of miniature size. 6. Question: What is the primary usage of these thermal overload relays? Answer: The primary usage of these thermal overload relays is protective, specifically for motor thermal overload protection. 7. Question: Is there any thermal overload relay that offers current selection options? Answer: Yes, the "New original overload protection thermal relay TK26-PC" offers current optional protection, implying selection options. 8. Question: Do any of the thermal overload relays offer a warranty? Answer: The provided information does not specify warranty details for the thermal overload relays. 9. Question: Are there any thermal overload relays that specifically mention their operational frequency? Answer: Yes, the "lr2 d43 50/60Hz AC thermal overload relay" specifically mentions an operational frequency of 50/60Hz. 10. Question: Can the "Best price LRS Thermal Overload Relay" be distinguished by its theory of operation compared to the others? Answer: Yes, the "Best price LRS Thermal Overload Relay" is distinguished by its operation based on the voltage relay theory, unlike the others which are based on the thermal relay theory.