Murray loop bridge

Leeds & Northrup test instrument capable of performing Murray and Varley loop tests.

Murray loop bridge is a bridge circuit used for locating faults in underground or underwater cables. It has been used for more than 100 years.

One end of the faulted cable is connected through a pair of resistors to the voltage source. Also a null detector is connected. The other end of the cable is shorted. The bridge is brought to balance by changing the values of R_B1 and R_B2, which is achieved when:

单词	Varley loop
释义	Varley loop 英语百科 Murray loop bridge Murray loop bridge is a bridge circuit used for locating faults in underground or underwater cables. It has been used for more than 100 years. One end of the faulted cable is connected through a pair of resistors to the voltage source. Also a null detector is connected. The other end of the cable is shorted. The bridge is brought to balance by changing the values of R_B1 and R_B2, which is achieved when:
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Varley loop

Murray loop bridge