Phase Sequence Relay Siemens

Sequence protection for a very comprehensive relay package.

Phase sequence relay siemens.

Monitoring of electrical parameters viz. Siemens 3ug4513 1br20 monitoring relay three phase voltage insulation monitoring 22 5mm width screw terminal 2 co contacts off delay 0 20s delay time 160 690 line supply voltage by siemens 297 99 297. 3ug4513 1br20 phase failure and sequence analog monitoring relay phase failure and sequence adjustable undervoltage asymmetry 20 fixed 3 x 160 to 690 v 50 to 60 hz ac hysteresis 5 fixed delay time 0 20 s 2 change over contacts screw terminal successor product for 3ug3013 1b. Negative phase sequence overcurrent 46nps thermal overload 49 overcurrent 50 51 earth fault 50g 50n 50sef 51g 51n 51sef directional control of overcurrent earth fault 67 high impedance ref 64h under over voltage 27 59 negative phase sequence voltage 47 voltage controlled overcurrent 51v neutral voltage displacement 59n.

The 3ug4513 1br20 from siemens is a phase monitoring relay. 3ug4512 1ar20 phase failure and sequence analog monitoring relay phase failure and sequence 3 x 160 690 v 50 60 hz ac 1 change over contact screw terminal. Authentic product best prices technical support. The devices are self powered measuring voltage rated control supply voltage and work on the closed circuit principle.

Negative phase sequence overcurrent 46nps thermal overload 49 overcurrent 50 51 earth fault 50g 50n 51g 51n neutral voltage displacement 59n high impedance ref 64h biased differential 87bd high set differential 87hs supervision functions. One version with four current transformer inputs for non directional earth ground fault detection and a second ver sion with three current inputs 2 phase 1 earth ground and one. Circuit breaker fail 50bf trip circuit supervision 74tc inrush detector 81hbl2. Phase sequence phase imbalance phase failure protection from under over current voltage and unbalance assymetry lcd display for 35mm width product.

For applications with ground current detection two versions are available.