IEEE 1300:2011 pdf free download – IEEE Guide for Cable Connections for Gas-Insulated Substations
cable termination: Components (equipment) assembled onto the end of the cable to provide the electricaland mechanical interface into the gas-insulated environment.Typically,this includes a solid insulationbarrier between the cable/cable fluid and the gas insulation of the Gls.
design pressure of the gas insulation in enclosure: The maximum gas pressure to which a gas-insulatedswitchgear enclosure will be subjected under normal service conditions.
dry-type cable termination: A cable termination that comprises an clastomeric electrical stress controlcomponent in intimate contact with a separating insulating barrier (insulator) between the cable insulationand the gas insulation of the switchgear. The cable termination does not require any insulating fluid.Thedry-type cable termination may be of plug-in or not plug-in type.
fluid-filled cable termination: A cable termination that comprises of a separating insulating barrierbetween the cable insulation and the gas insulation of switchgear. The cable termination includes aninsulating fluid as part of the cable connection assembly.
GIS conductor end: The end of the GlS high-voltage conductor inside the cable connection enclosure.
main-circuit connection interface: A part of the main circuit providing the current path between the GISconductor and the cable termination.
metal-oxide surge arrester (MOSA): A surge arrester utilizing valve elements fabricated from nonlinearresistance metal-oxide materials.
pipe-type cable termination: A cable termination that comprises separating insulating barrier and othertermination components that are designed to withstand high fluid pressures of the pipe-type cable system.removable link connector: A removable connector between the GlS conductor and the end of the cabletermination.
sheath voltage limiter(SVA): A device connected to a sheath or to the sheaths of specially bonded cablesintended to limit sheath voltages. The three main types are: gapless metal-oxide surge arrester,nonlinearresistances in series with spark gaps, and spark gaps.
surge suppressor: A device operative in conformance with the rate of change of current, voltage, power,etc., to prevent the rise of such quantity above a predetermined value. This device, commonly comprised ofone or more valve elements (non linear resistors) is commonly used for cable connection parts that areseparately grounded.
valve element: A resistor that, because of its nonlinear current-voltage characteristic,limits the voltageacross the arrester terminals during the flow of discharge current and contributes to the limitation of followcurrent at normal power-frequency voltage.
4.1 General
The usual limits of supply for each party are shown in Figure 2 for one type of construction with fluid-filledcable terminations frequently used for extruded dielectric cables, in Figure 4 for a type of construction withdry-type cable terminations for extruded cables, and in Figure 6 for a type of construction used with pipe-type cables. The limits of supply shown in Figure 2 and Figure 4 in this document are per IEC 6227i-209ed.1.0 (2007).
NOTE—The limits of supply for a type of construction with self-contained fluid-filled (SCFF) cables may be either perFigure 2(luid-filled cable terminations on extruded cables) or per Figure 6 (pipe-type cables) and need to be agreedupon between user and cable termination manufacturer.”
4.2 Over voltage protection
lf a metallic ground connection between part 6 or part 1l and part 13 of Figure 2 for fluid-filled cableterminations and Figure 4 for dry-type cable terminations, and across part 16 in Figure 6 for pipe-type cableterminations is not feasible, non-linear resistors (part 15 in Figure 2 and Figure 4 and part 19 in Figure 6)may be connected across the insulated junction to limit the voltage under transient conditions. For furtherdetails, refer to Clause 11.