Functions

Standard version

Scope of basic version plus:

• Inadvertent energization protection
• 100 %-stator earth-fault protection with 3rd harmonic
• Impedance protection

Full version

Scope of standard version plus:

• DC voltage protection
• Overcurrent protection during start-ups
• Earth-current differential protection
• Out-of-step protection

Additional version

Available for each version:

• Sensitive rotor earth-fault protection (1-3 Hz method)
• Stator earth-fault protection with 20 Hz voltage
• Rate-of-frequency-change protection
• Vector jump supervision

Monitoring functions

• Trip circuit supervision
• Fuse failure monitor
• Operational measured values V, I, f,…
• Every metering value Wp,Wq
• Time metering of operation hours
• Self-supervision of relay
• 8 oscillographic fault records

Communication interfaces

• System interface
  • IEC 61850 protocol
  • IEC 60870-5-103 protocol
  • PROFIBUS-DP
  • MODBUS RTU
  • DNP 3.0

Hardware

• Analog inputs
• 8 current transformers
• 4 voltage transformers
• 7/15 binary inputs
• 12/20 output relays

Front design

• User-friendly local operation
• 7/14 LEDs for local alarm
• Function keys
• Graphic display with SIPROTEC 7UM623