Phase Sequence Relay Siemens

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.

Phase sequence relay siemens.

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. The phase control relay monitors phase sequence phase failure of one of the three phases and undershoot of at least one line to line voltage of the set nominal line voltage by 20 in a three phase system. 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 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.

Monitoring relay earth leakage relay supply voltage 415v ac 3f 3w 415v ac 3f 3w 3f 4w 415v ac 3f 3w 1f 2w 3f 4w operating band 154 480 vac l l 280 500 vac l l 160 288 vac l n 310 480 vac 10ma 30a control voltage built in built in built in 110v ac 230v ac operating temperature 0 to 50 c trip modes phase sequence. 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. Circuit breaker fail 50bf trip circuit supervision 74tc inrush detector 81hbl2. 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.

For applications with ground current detection two versions are available. Monitoring of electrical parameters viz. Authentic product best prices technical support. Shop online for siemens switchgear 3 phase monitoring relay 160 to 690v 2co under voltage relay ip20 phase sequence phase failure phase imbalance 3ug46151cr20.

Sequence protection for a very comprehensive relay package.