scope:

This standard applies to single- or multi-pole ac switches for rated maximum voltage above 1 kV to 38 kV for use in switching shunt capacitor banks (see the note in this clause). This standard covers the application of capacitive load switching wherein the capacitive loads are separated by sufficient inductance to limit the transient peak inrush current to the peak values shown in Table 2 and Table 3. Switches designed and built in accordance with this standard are rated for routine switching of capacitive load currents only.

NOTE-This standard is intended to be a comprehensive standard for all "specific duty" applications of switches in the area of switching shunt capacitor banks, but it is limited in scope up to and including 38 kV. However, subject to agreement between the user and manufacturer, it may be used as a specification guide for other rated voltages.¹

Purpose

This standard provides comprehensive and detailed requirements for designing and building switches whose specific operating duty is to routinely energize and de-energize shunt capacitor banks with a rated maximum voltage above 1 kV to 38 kV.

¹Notes in text, tables, and figures of a standard are given for information only, and do not contain requirements needed to implement the standard.