GLOSSARY OF TERMS
... Gated: Restricted movement in XY axis only. Hall Effect Sensor: An electronic device that changes voltage output or its state when exposed to a magnetic field. Header: The part of a switch that groups terminals or wires together to allow entry or exit. Specifications Subject To Change Without Notice ...
... Gated: Restricted movement in XY axis only. Hall Effect Sensor: An electronic device that changes voltage output or its state when exposed to a magnetic field. Header: The part of a switch that groups terminals or wires together to allow entry or exit. Specifications Subject To Change Without Notice ...
Catalog IC 10 · 2014 Chapter 5
... 3RH2911-.NF. solid-state compatible auxiliary switch blocks have no positively-driven contacts. ...
... 3RH2911-.NF. solid-state compatible auxiliary switch blocks have no positively-driven contacts. ...
lecture1425873259
... 1.1 Fundamentals of Power System Protection The purpose of an Electric Power System is to generate and supply electrical energy to consumers. The power system should be designed and managed to deliver this energy to the utilization points with both reliability and economically The capital investment ...
... 1.1 Fundamentals of Power System Protection The purpose of an Electric Power System is to generate and supply electrical energy to consumers. The power system should be designed and managed to deliver this energy to the utilization points with both reliability and economically The capital investment ...
Zero Sequence Current Compensation for Distance
... mutual coupling can cause distance relays to over-reach or under-reach depending on the operational status of the adjacent line. In principle, this problem can be solved by introducing the zero sequence current from the parallel line to the relay on the faulted line. Nevertheless, manufacturers and ...
... mutual coupling can cause distance relays to over-reach or under-reach depending on the operational status of the adjacent line. In principle, this problem can be solved by introducing the zero sequence current from the parallel line to the relay on the faulted line. Nevertheless, manufacturers and ...
INTRODUCTION TO SYSTEM PROTECTION
... Voltage across cap bank is determined by current flow and impedance (capacitive reactance) of bank. If a capacitor fuse blows or if a capacitor shorts, the voltage drop across the bank changes due to a change in capacitive reactance of the bank. A voltage relay detects the higher voltage and trips t ...
... Voltage across cap bank is determined by current flow and impedance (capacitive reactance) of bank. If a capacitor fuse blows or if a capacitor shorts, the voltage drop across the bank changes due to a change in capacitive reactance of the bank. A voltage relay detects the higher voltage and trips t ...
Wiring Manual | 2011
... Distribution, such as molded case circuit breakers certified per the UL 489 product standard, and those found in Industrial Control, typically falling under UL 508. Product standards such as UL 489 and CSA C22.2 No. 5-09 require significantly larger air and creepage clearances in component construct ...
... Distribution, such as molded case circuit breakers certified per the UL 489 product standard, and those found in Industrial Control, typically falling under UL 508. Product standards such as UL 489 and CSA C22.2 No. 5-09 require significantly larger air and creepage clearances in component construct ...
Relay
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.A type of relay that can handle the high power required to directly control an electric motor or other loads is called a contactor. Solid-state relays control power circuits with no moving parts, instead using a semiconductor device to perform switching. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called ""protective relays"".