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Well any type of relay protection is extremely complicated any many people will spend their whole career learning about protection and control. But a distance relay essentialy looks at the impedance of the circuit to be protected. When a fault occurs the impedance of the circuit will change. It then calculates this new impedance to determine where the fault has occurred. By knowing where the fault is it can trip appropriate CB's to isolate the faulted section.
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Where you use undervoltage protection?
Undervoltage protection is provided for A circuit bars,motors, generators, transformers, rectifiers, etc.. Such protection is given by means of undervoltage relay. Undervoltage relay are necessary for voltage control and reactive power control of network buses and load buses. These type of relays have inverse time characteristics and their operating time reduces twith the reduction in operating voltage. Undervoltage protection is provided for AC circuit bars,motors, generators, transformers, rectifiers, etc.. Such protection is given by means of undervoltage relay. Undervoltage relay are necessary for voltage control and reactive power control of network buses and load buses. These type of relays have inverse time characteristics and their operating time reduces twith the reduction in operating voltage.
What is an updated and digital version of X25 that also relies on packet switching?
Frame relay.
Who are the Service providers for Relay testing & Commissioning?
Power Advantage is the best service providers when it comes to Relay Testing & Commissioning.
What is copy protection on disks?
Copy protection，You Try minitool partition wizard
What is the use of a DHCP relay agent?
The use of a DHCP relay agent is an agent that relays DHCP between DHCP clients and DHCP servers on different IP networks. The DHCP relay agent is compliant with RFC 1542.
What is the use of reactance relay?
reactance relay is used for distance protection of the transmission line....
What is distance really?
The most common form of protection on high voltage transmission systems is distance relay protection. Power lines have set impedance per kilometre and using this value and comparing voltage and current the distance to a fault can be determined. The ANSI standard device number for a distance relay is 21
Is feeder protection relay and ring main unit protection relay same?
No there not same
What the three types of over current protection relay and describe the principles of operation?
over current protection relay
What is LBB protection Relay?
LBB is local breaker protection
Which relay is used to protect generators and motors?
differential protection relay
What is the maximum distance the 5-button remote for an Astra 600 6-Relay Car Alarm will work?
It has a display distance of 2 meaters.
How does a distance protective relay work?
The distance relay trips when a fault occurs at a distant or a remote place in the electric transmission line. There is a mechanism based on the impedance calculation of the distance of the transmission line after which it is accurately known where the fault has taken place. Thus the distance protective relay can trip the circuit & prevent the fault to be carried further and also can indicate the location of the fault.
Which relay is used for long transmission line?
distance relay..........
What is the number on the Reverse Voltage Protection Relay for a Ford Contour '97?
On a 1997 Ford Contour : The Reverse Voltage Protection relay location is marked ( D1 )
How does apfc relay work?
how the apfc relay work
What is 50G protection relay mean?
50 is the ANSI device number for an instantaneous overcurrent relay. The G suffix stands for "ground." A 50G protection relay trips the circuit breaker without time delay when it detects a ground fault on the circuit.
