2V68 BUS Bar CT Supervision & Shorting

The 2V68 is a three phase monitoring device designed to provide continuous supervision of the bus wires in high impedance type bus wire protection schemes.

The relay will detect open circuited bus wires as well as open circuited main current transformers. The relay provides three (3) latching N/O alarm output contacts to signal faults. Three (3) additional N/O latching output contacts are provided for an integral bus wire CT shorting facility.

Where CT supervision is integrated in the main protection relay (e.g. numeric high impedance differential relays such as the Reyrolle DAD-N), the 6RA20 Series dedicated CT shorting relay may be employed to achieve high CT switching rating & 3kv isolation across open CT shorting contacts.

Features

• Single or double shot reclose with selectable auto reset mode
• Low AC burden
• No external resistors required
• 3 latching N/O (Hand reset), alarm contacts
• 3 latching N/O (Hand reset), bus wire shorting contacts
• Hand reset flag
• 40-300V DC auxiliary supply / 40-275V AC auxiliary supply
• Optional 20-70V DC supply
• Auxiliary supply fail alarm
• 3s fixed time delay
• 4M28 draw out case
• Made in Australia