• For Transformers of All Sizes:

 • Two-, Three- or Four-winding Transformers for Transmission and

Distribution applications

 • Generator-Transformer Unit Overall Differential

 • Unit Protection of Other Electrical Apparatus and

certain Bus Arrangements (including those with a transformer in

the zone)

• Additional Applications: System Backup Protection, Load Shedding

(voltage and frequency), Bus Protection, and individual Breaker

Failure Protection for each winding input

• Available voltage configurations include zero, two or four voltage inputs

• Ground Differential configurations include one, two or three current

inputs

• Optional Ethernet Connection and Expanded I/O

• Optional Voltage Package includes, 24 Volts/Hz Overexcitation, 27

Phase Undervoltage, 59G Ground Overvoltage and 81O/U Over/Under

Frequency