What Does A End Of Line Resistor Do

The end of line resistor is needed to prevent reflections. The end of line resistor is used to pass dc current.

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70 مقاومة نهاية الخط End Of Line Resistor

The purpose of eolrs is to allow the control panel to supervise the field wiring for open or short circuit conditions.

What does a end of line resistor do. Once there is an alarm the circuit closes and the alarm goes off. End of line resistors eolr are resistors of a known value that are used to terminate protective loops or zones such as those found in esd or fg systems. End of line resistors for those systems are installed here.

A reflection on a transmission line occurs when impedance of the transmission line abruptly changes. The resistors need to go at the end of the line because they will only supervise the wiring from the resistor to the panel. The only purpose is to pass a small supervision current so the fire alarm or security panel can look at the wire.

An end of line resistor is used to create a small constant load in a protective zone or loop. 10000 ohms or 10 k ohms plus the last line shows the tolerance of the resistor 4th stripe as explained above the fourth stripe is the measure of tolerance of the resistor which means how much does the resistance change under varying operational conditions such as temperature etc. The purpose of eolrs is to allow the control panel to supervise the field wiring for open or short circuit conditions.

Because theres no ac there are no reflections from the end of the loop. Simply remove a half inch of the white wires insulation attach one leg of the resistor to the white wire and tighten them snugly with a wire nut. The end of line resistor used in fire alarm systems and security systems may look the same as a terminating resistor however the function of the end of line resistor is completely different.

Its purpose is to complete the circuit so the panel can perform a constant continuity check. So if you put the resistor at the panel its again only going to supervise the wiring between the resistor and the panel which is now wiring. To prevent this a resistor is installed at the end of the wire.

The end of line resistor confirms that the wiring in a building remains undamaged. If the supervision current stops the stoppage can be reported immediately and the trouble will be detected. End of line resistors eolr are resistors of a specified value that are used to terminate protective loops or zones.

The end of line resistor is an ordinary resistor.