RST-25 Spannungsrelais

Operation Instructions: The electronic phase relay RST 25 offers phase, philure shift, phase flashing, asymmetric, Phase sequence and also under and overvoltage control. Undervoltage:The desired undervoltage limit can be adjusted down to-25% UN. Asymmetry:The adjusting over-and undervoltage limit, the asymmetric limit is slso adjusted. Time Delay:The switch off time can be adjusted by the potentiometer “Time Delay” from 0.1……5seconds. With this function it is possible to adjust the time for the identification of the failure. Contactor Control:If a phase fails during operation at load or one of the contacts of the contactor or circuit Breaker is defective,(contact bounce or scorched contacts), RST 25 recognizes the failure, And also the feedback voltage, and switches off depending on the setting of “Time Delay”. The RST 25 controls the phase shift. If there is a phase failure the angle from the feedback Voltage is 30°. The RST 25 recognizes this failure. Mains voltage: 3χ400V, 40-60Hz Power Supply : 185… 250V AC(Optional when placing order) Power Consumption : 2VA Ambient Temperature : 25° …65° Phase Angle : 120°±8°@UN=UU Under voltage : Adjustable to -25% UN Overvoltage: Adjustable to +25% UN Tripping time:0.1…5 seconds Life of the Instrument: 20χ106 mechanical switchings Air-gap and Leakage path:Group C, 250V, VDE 0110 Relay Output:1 C/0 contact, 16A, 250V VDE, SEV, SEMKO, AgCdO High-voltage test: 2500V Shock voltage test:5KV VDE0435 Housing Type: 1P 40, DIN 40 050 Weight: 325g Dimension: H=75mm, W=45mm, D=120mm