S & C 5300r3 Loadbuster-loadbreak Tool

US $720.00

  • Lenoir, North Carolina, United States
  • Mar 2nd
Application Notes Loadbuster is a lightweight, portable loadbreak tool. When used with appropriately designed “hook-equipped” disconnects, cutouts, power fuses, fuse limiters, and pad- mounted gear, Loadbuster is suitable for these live-switching duties of single- or three- phase overhead distribution circuits through 34.5 kV and underground distribution cir- cuits through 25 kV: • Transformer switching—transformer load currents up through 600 amperes nominal, 900 amperes maximum, as well as transformer magnetizing currents associated with the applicable loads. • Line switching—load splitting (parallel or loop switching) and load dropping of currents up through 600 amperes nominal, 900 amperes maximum; also line dropping (charging currents typical for distribution systems of these voltage ratings). • Cable switching—load splitting (parallel or loop switching) and load dropping of currents up through 600 amperes nominal, 900 amperes maximum; also cable dropping (charging currents typical for distribution systems of these voltage ratings). • Capacitor bank switching—switching of single capacitor banks as follows: Loadbuster Catalog Number Nominal System Voltage, kV, Three-Phase Maximum Capacitor Bank Rating, kVAC,Three Phase Solidly or Effectively Grounded System Ungrounded System Single1 Banks, Grounded-Wye Connected Single1 Banks, Ungrounded-Wye Connected Single1 Banks, Grounded- or Ungrounded-Wye Connected 5300R3 12 thru 14 .4 16 20 .8 thru 23 .9 24 .9 and 26 1800 2400 3000 3600 1800 2400 d d 1800 2400 d d 5400R3 20 .8 thru 23 .9 24 .9 and 26 27 .6 34 .5 3000 3600 3600 4800 3000 3600 3600 d 3000 3600 3600 d A Note on Single-Pole Switching 1 Loadbusters must not be used for switching parallel (“back-to-back”) capacitor banks . d Loadbusters must not be used for switching ungrounded-wye connected banks—or grounded-wye connected banks on ungrounded systems—where maximum system operating voltage exceeds 18 kV for Loadbuster, Catalog Number 5300R3; or 29 kV for Loadbuster, Catalog Number 5400R3 . In single-pole switching of ungrounded-primary three-phase transformers or banks (or single-phase transformers connected line-to-line), circuit connections or parameters may, in some cases, produce excessive overvoltages. In particular, for the following applications above 22 kV, single-pole switching by any means—including Loadbuster— should be performed only under the conditions stated in italics: • Switching unloaded or lightly loaded delta-connected or ungrounded-primary wye-wye connected three-phase transformers or banks (or line-to-line connected single-phase transformers), rated 150 kVA or less three-phase, or 50 kVA or less single- phase—or of any kVA rating when combined with unloaded cables or lines—where maximum system operating voltage exceeds 22 kV. Single-pole switching should be performed only if each phase is carrying 5% load or more, or if the transformer or bank is temporarily grounded at the primary neutral during switching. • Switching loaded or unloaded ungrounded-primary wye-delta connected three-phase transformers or banks—alone or combined with unloaded cables or lines—where maximum system operating voltage exceeds 22 kV. Single-pole switching should be performed only if each phase is carrying 5% load or more and if the lighting-load phase is always switched open first (or switched closed last); or if the transformer or bank is temporarily grounded at the primary neutral during switching.
Item is still in original packaging. Purchased in a estate auction.
Brand S & C
Country/Region of Manufacture United States
Model 5300R3

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