A higher current may cause a circuit to open under the sustained fault condition. What is more important to determine is the effect when the current is low enough to notimmediately open the circuit, but is sufficient enough to cause significant heating of the ciruit involved.
Dave Dulmage JIM WIESE wrote: > I am looking for the original source study that was used to develop > the second level power faults in GR-1089-CORE. In other words, where > did the test levels come from. Was it UL or Bellcore or possibly AT&T > prior to the breakup. Specifically I am trying to find out why test 4 > in Table 4-8 is limited to 2.2 amps. Why not 3, 4, 5, 6 amps for 15 > minutes.I am also looking for a time-current plot or data for 26 gauge > cable. Figure 4-5 in GR-1089-CORE is supposed to be similar to 32 > gauge tinsel cord and mimics the Bussman fuse upper limit, however I > am looking to find where 26 gauge cable would fall on this plot.Any > help would be appreciated.Jim > > Jim Wiese > NEBS Project Manager/Senior Compliance Engineer > ADTRAN, INC. > 901 Explorer Blvd. > P.O. Box 140000 > Huntsville, AL 35814-4000 > 256-963-8431 > 256-963-8250 fax > [email protected]
