Automatic Changeover Switching Equipment (ACSE)

The automatic control function is responsible for the automatic switching scheme and interlocks for breakers. In order to achieve this function the IED collects inputs for breaker status, protection relays and other data related to power such as voltage and Var values. This function is derived from the same IED used in the panel to divert the control through SCADA system.

Automatic Bus Transfer Scheme (ABTS)

ABTS is an automatic switching scheme in substations which performs in parallel mode of operation with some transformers. In case of a power transformer failure the remaining transformers continue to operate to feed the entire substation load without interruption of supply. The ABTS scheme can be achieved through a programmable IED or remotely controlled through the SCADA system.