This article is for manufacturing, testing of non-segregated Bus Bars and Bus Ducts rated 600 V to 35 kV as per international standard ANSI C37. proportion of PV connected. The details of the feeders selected are shown in Table 1. 23, Bus Bars and Bus Ducts Ratings, Bus Bar Supports, Bus Bars. GE Multilin provides protective relays that support all busbar protection techniques, including overcurrent, high-impedance differential, and percentage (low-impedance) differential. GE Multilin. In addition, the requirements of Pt 16, Ch 2, 7. 19 Disconnectors and switch-disconnectors are to be complied with. Identification of Single-Phase-to-Ground Faults on 35kV Auxiliary Busbars When single-phase-to-ground faults, ferroresonance, phase loss, or high-voltage fuse blowouts in voltage transformers (VTs) occur, the observed phenomena can be similar, but careful analysis reveals distinct differences. Functional Specification for 15 kV, 25 kV, or 35 kV Underground Distribution Switchgear Functional Specification for 15 kV, 25 kV, or 35 kV Underground Distribution Switchgear Scope This specification applies to three-phase, [select #] - way [select # -source, select # -tap], 50-60 Hz, fully dead.