Which of the following is not typically used in a switchyard?

• A. Communication equipment
• B. Protective equipment
• C. Regulation equipment
• D. Monitoring equipment

Answer: (C)

Switchyards are designed for rapid switching, fault isolation, and controlling power flow, so the equipment you typically find supports protection, monitoring, and communication. Protective equipment ensures faults are cleared safely—think protective relays and circuit breakers. Monitoring equipment provides real-time data on voltages, currents, and device status. Communication equipment links the substation to the control center and other substations for commands and data. Regulation equipment, such as voltage regulators or on-load tap changers, is usually associated with devices that actually regulate voltage on transformers or with capacitor banks, and these functions aren’t the primary role of the switchyard itself. Therefore, regulation equipment is not typically used in a switchyard.