High-speed distance protection relay

High-speed distance protection is used for selective short-circuit protection in high voltage systems. In conjunction with transmission line simulation lines, all relevant situations can be simulated.

Functions:

• Distance protection (ANSI 21/21N)

• Six distance stages

• pickup method: Overcurrent pickup I>>

• Polygon- or circular characteristic

• Teleprotection for distance protection (ANSI 85-21)

• Overvoltage/undervoltage protection (ANSI 59, 27)

• Over/underfrequency protection (ANSI 81)

• Thermal overload protection (ANSI 49)

• Backup overcurrent protection (ANSI 50, 50N, 51, 51N)

• STUB-bus overcurrent stage (ANSI 50-STUB)

• Switch-onto-fault protection (ANSI 50HS)

• Trip circuit supervision (ANSI 74TC)

• CLOSE command interlocking (Lockout, ANSI 86)

In- Outputs:

• 5 Indication inputs

• 4 command outputs

• 5 fast relays

Measuring valves:

• Current
• Voltage
• cos φ
• active and reactive power

Technical data:

• Nominal voltage: Unom = 80...125V

• Nominal frequency: fnom = 50Hz/60Hz

• Nominal current: Inom. = 1A

• communication: Ethernet EN100

• Including Software for parameterization and control of the relay
  Required Operating Systems: Microsoft Windows 7 Ultimate/Enterprise and Professional 32-bit and 64- bit with Service Pack 1

• Inputs/Outputs: 4mm safety sockets

• Weight: 5kg