FDC1 - C&S Electric Limited

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5. Design5.1 Connectionsexternal/ResetL+/L L-/NC9 E9 D9 C8 D8D1PowerSupply~externalResetRelay1C1E1D2C2E2D3+A3A4SELECT/RESETRelay2C3E3D4C4E4+-ENTERTRIPFig. 5.1: Connection diagram5.1.1 Voltage measuring inputsDC voltage is connected to the protection relay viaterminals A3 and A4.5.1.2 Output RelaysThe <strong>FDC1</strong> is equipped with two relays forundervoltage and overvoltage supervision each withtwo change over contacts. Relays selection for differentvoltage elements is users configurable.4
5.2 Front Plate6. Operation and settings6.1.1 Setting of pickup value for overvoltage supervision U>/U>>With the aid of keypad available at front plate pickupvalue of over voltage element U>,U>> could beadjusted in the range of 50-250% of Un.6.1.2 Setting of pickup value for undervoltage supervision U
Page 1 and 2: High-Tech RangeFDC1- DC Voltage Rel
Page 3: 1. IntroductionFDC1 series of relay
Page 7 and 8: 9. Technical Data9.1 Measuring Inpu

FDC1 - C&S Electric Limited

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