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Overcurrent Protection (50/51)

Overcurrent Protection (50/51). A New Family of Overcurrent Relays D igital IAC, IFC and SFC. The “D” family. Single Phase Self-Powered Microprocessor Based Exact Physical Replacement of Equivalent E/M Relays. User Friendly Features. Pickup Status LED

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Overcurrent Protection (50/51)

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  1. Overcurrent Protection (50/51) A New Family of Overcurrent Relays Digital IAC,IFC and SFC

  2. The “D” family. . . • Single Phase • Self-Powered • Microprocessor Based • Exact Physical Replacement of Equivalent E/M Relays

  3. User Friendly Features... • Pickup Status LED • Independent IOC/TOC Trip Target , with Reset • Trip Circuit Test • A Trip Contact and an Auxiliary Contact are Provided for Both TOC and IOC • 50/60 Hz Selectable • Draw-out Case With current injection test feature

  4. Ease of Installation and Design • Single Relay Replaces Hundreds of Existing Models. • Electrically and Mechanically Compatible with IAC, IFC, or SFC Relays. • Same Case Size, Fits Existing Cutout. • Self Powered

  5. Coordination Flexibility • User Selection of 16 Time-Current Curves • Inverse (IAC51*) IEC Inverse • Very Inverse (IAC53*) IEC Very Inverse • Extremely Inverse (IAC77*) IEC Extremely Inverse • Short Time (IAC55) IEEE Inverse • Short Time (IAC75) IEEE Very Inverse • Short Time (IAC95) IEEE Extremely Inverse • Medium Time (IAC57) Definite Time (0.5-9.5sec) • Long Time (IAC66) I2T * Identical Match to IAC curves and No Recoordination Necessary

  6. Coordination Flexibility • Digital Single Phase IAC, IFC and SFC Cross Reference to GE Electromechanical/Static Relays • The DIAC, DIFC and DSFC line of digital single phase, self-powered relays offers customers a single relay that replaces the hundreds of different models of IAC, IFC and SFC relays. These relays can replace the following GE electromechanical & static relay types that require a time overcurrent range of 0.5-15.9 Amps and an instantaneous overcurrent range of 1-159 Amps: IAC51 IAC53 IAC55 IAC57 IAC66 IAC77 IAC95 IFC51 IFC53 IFC57 IFC66 IFC77 IFC95 SFC151 SFC153 SFC177

  7. Coordination Flexibility • Versatile Independent TOC/IOC Functions • Enable/Disable TOC and IOC • Adjustable IOC Delay (0-400mS) • Low Burden Sensitive Ground Protection • Selectable Reset Characteristics • Timed Reset (Emulate Induction disk) • Instantaneous Reset

  8. Value for your Investment Coordination Flexibility • 16 User Selectable TOC Curves Ease of Retrofit - Same Panel Cutout • To Order All That is needed.... D_ _ CA_ _ A Revision 1 Amp Nominal Rating 5 Amp Nominal Rating IA S1 Case IF C1 Case SF V1 Case

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