*(.&
2
DIAC / DIFC / DSFC Digital Overcurrent Protection
LIST OF FIGURES
FIGURE 0: FRONT VIEW DIFC (8919654)................................................................................................................... 3
FIGURE 1: IAC51 TOC CURVE.................................................................................................................................... 6
FIGURE 2: IAC53 TOC CURVES ................................................................................................................................. 7
FIGURE 3: 55 SHORT TIME TOC CURVES ................................................................................................................ 8
FIGURE 4: 57 MEDIUM TIME TOC CURVES .............................................................................................................. 9
FIGURE 5: 66 LONG TIME TOC CURVES ................................................................................................................ 10
FIGURE 6: 75 SHORT TIME TOC CURVES .............................................................................................................. 11
FIGURE 7: IAC77 TOC CURVES ............................................................................................................................... 12
FIGURE 8: 95 SHORT TIME TOC CURVES .............................................................................................................. 13
FIGURE 9: IEC INVERSE TOC CURVES................................................................................................................... 14
FIGURE 10: IEC VERY INVERSE TOC CURVES ...................................................................................................... 15
FIGURE 11: IEC EXTREMELY INVERSE TOC CURVES .......................................................................................... 16
FIGURE 12: IEEE INVERSE TOC CURVES .............................................................................................................. 17
FIGURE 13: IEEE VERY INVERSE TOC CURVES.................................................................................................... 18
FIGURE 14: IEEE EXTREMELY INVERSE TOC CURVES........................................................................................ 19
FIGURE 15: DEFINITE TIME ...................................................................................................................................... 20
FIGURE 16: I
2
T TIME CURVE .................................................................................................................................... 21
FIGURE 17: IOC CURVE ............................................................................................................................................ 22
FIGURE 18: DIAC AND DSFC EXTERNAL / INTERNAL CONNECTIONS ............................................................... 27
FIGURE 19: DIFC EXTERNAL / INTERNAL CONNECTIONS................................................................................... 28
FIGURE 20: DIAC PANEL MOUNTING AND DRILLING ........................................................................................... 29
FIGURE 21: DIFC PANEL MOUNTING AND DRILLING ........................................................................................... 30
FIGURE 22: SURFACE MOUNTING DIFC................................................................................................................. 31
FIGURE 23: DSFC PANEL MOUNTING AND DRILLING .......................................................................................... 32
FIGURE 25: DIAC OR DSFC TEST SETUP FOR PICKUP AND OPERATING TIME VERIFICATION ..................... 37
FIGURE 26: DIFC TEST SETUP FOR INSTANTANEOUS UNIT............................................................................... 37
FIGURE 27: DIAC OR DSFC TEST SETUP FOR INSTANTANEOUS....................................................................... 38
FIGURE 28 (9819647/8919648): DIAC FRONT AND REAR VIEWS ......................................................................... 39
FIGURE 29 (8919652/8919653): DIFC FRONT AND REAR VIEWS ......................................................................... 40
FIGURE 30 (8919632/8919661): DSFC FRONT AND REAR VIEWS ........................................................................ 40
FIGURE 31: BURDEN CURVE ................................................................................................................................... 41
FIGURE 32: IOC/TOC UNIT ....................................................................................................................................... 43
These Instructions do not purport to cover all details or variations in equipment
nor provide for every possible contingency to be met in connection with the in-
stallation, operation, or maintenance. Should further information be desired or
should particular problems arise which are not covered sufficiently for the pur-
chaser’s purpose, the matter should be referred to the GENERAL ELECTRIC
COMPANY. To the extent required the product described herein meets applicable
ANSI, IEEE, NEMA, and IEC standards; but no assurances are given with respect to
local codes and ordinances because they vary greatly
Summary of Contents for DIAC
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