Protection System of UPD

Which of the following is the present generation relay :-

• El. Mech. Relay

• Numerical Relay

• Static Relay

• None

Which of the following is the characteristics of Numerical Relay :-

• In this relays transistors and IC’s been used

• They use principle of electromagnetic principle

• They use microprocessor. Within built software with predefined values

• None

Which of the following is the characteristics of El. Mech. Relay :-

• Electrical qtys converted into mechanical force, torque

• Level detects, comparison with reference value in analogue comparator

• A/D conversion, numerical algorithm techniques

• None

Which of the following relay is SCADA Compatible

• El. Mech. Relay

• Static Relay

• Numerical Relay

• None

Operational value indication Not possible in :-

• Static Relay

• El. Mech. Relay

• Numerical Relay

• None

Fault Disturbance Recording possible in

• Numerical Relay

• Static Relay

• El. Mech. Relay

• None