Common use of 115kV Bus Protection Clause in Contracts

115kV Bus Protection. For 115kV bus protection, two (2) packages of current differential protection (one high impedance and one low impedance) shall be installed. Each bus protection relay will require an auxiliary relay for contact multiplication and for bus voltage monitoring for the reclosing stall / automatic bus restoration scheme.

115kV Bus Protection. For 115kV bus protection, two (2) packages of current differential protection (one high impedance and one low impedance) shall be installed. Each bus protection relay will require an auxiliary relay for contact multiplication and for bus voltage monitoring for the reclosing stall / automatic bus restoration scheme. The bus differential relaying will require a new column-CT to be mounted between the existing circuit switcher CS6177 and transformer TR1.