This module allows the calculation of fault duties according to the C37 Series of the ANSI/IEEE Standards and can be accessed from the mode toolbar as shown in figure 1. Grid codes, interconnection, or evacuation criteria must be followed during the proposed system design and continue to maintain compliance under grid-connected operation. Short circuit calculation using ETAP can be done through the ‘Short Circuit Analysis’ module. .
newly created ground grid system presentation for the first time (by double-clicking on it from the One-Line Diagram or right-clicking it from the Project View and selecting “View” command) the “ETAP Ground Grid Design” dialog box is displayed for the selection of the appropriate Study Model i.
ETAP PowerStation 4.
. The design used data found in IEEE Std. Grounding Design Variables – Soil model variables – Seasonal modelling of soil – Crushed rock resistivity – Fault current design margin – Fault clearing time – Summary / Combined effect.
fc-smoke">Apr 16, 2015 · Documents. .
. ETAP KB | Ground Grid Systems | Knowledge Base.
, length = 8 ft.
3) A newly created Ground Grid System requires association to Study model.
. . Dec 15, 2013 · RE: Parallel Generators/Grid Grounding Scheme (NGR) Questions (w/ diagram) collies99 (Electrical) 17 Dec 13 13:32 We use neutral grounding transformer and secondary resistance sized to about 3Z0 which in effect reduces current to about 15-20 amps, but each unit is feed into a delta winding which blocks zero sequence from parallel Gen and the HV. Grounding Design Variables – Soil model variables – Seasonal modelling of soil – Crushed rock resistivity – Fault current design margin – Fault clearing time – Summary / Combined effect.
7 kA. . .
fc-smoke">Nov 9, 2017 · 1.
Sep 25, 2008 · When modeling the ground grid in ETAP, it wants "Fault Current" and the "X/R" ratio which makes me think that it wants the synchronous fault current and will compute the maximum sub-transient current level using th X/R ratio. Clicking on the command Export Ground Grid will prompt for selection of entities in the AutoCAD drawing that represent Ground Grid Elements as shown. . .
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