DFK-05F Digital Three Phase Asymmetry Adjustable Sequence, Failure Relay

relayGeneralDFK-05F phase sequence and protection relays are designed to prevent the failures originated from motor heats and 3 phases loads..Usage and Working PrinciplePlease connect the device according to the schema as shown.To adjust the Asymmetry set value: While looking at the display whichis located on the left side, please adjust the (Asm%) button as requested.When the user moves the button the values are going to be seen on the screen.To adjust the waiting time: Please move the (t) button while lookingat the display which located on the left side. The values which has adjustedcan be seen on the left side on the display. After 4sec.that you stop movingthe button voltage values can be seen on the displays.When the device is loaded with energy the set values can be seen andafter 2 sec. Voltage values can be seen accordingly. When voltage valuesbetween phases 180V and 460V, if the difference between voltages arelower than adjusted relay LED turns on and contact output (NO)3.ower than adjusted relay LED turns on and contact output (NO)3.If any of the phase sequence voltage values descend under 180V orincrease up to 460V voltage error led turns on and after 2 sec. later relayled turns off and contact out put assigns to (NC)1. When the voltages turnsinto the normal values waiting time counts according to (t) and voltage failure led turns off and contact output becomes (NC)3.IF the difference between voltages are over than the asymmetry set value, asymmetry failure led turns on (Asm Err), it countsas the setted waiting time. Relay led turns off and contact out put becomes (NC) 1. If Difference between voltages descendunder setted value, asymmetry failure led turns off, it counts the waiting time, after the waiting time is up relay led turns on andthe contact out put becomes (NO) 3.DFK-05F Device provides phase sequence speciality..When the phase sequen

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