Protection functions
• Time-overcurrent protection
( definite-time/ inverse-time/ user-def.)
• Directional time-overcurrent protection
( definite-time/ inverse-time/ user-def.)
• Sensitive dir./ non-dir. earth-fault
detection
• Displacement voltage
• Intermittent earth-fault protection
• High-impedance restricted earth fault
• Inrush restraint
• Motor protection
– Undercurrent monitoring
– Starting time supervision
– Restart inhibit
– Locked rotor
• Overload protection
• Temperature monitoring
• Under-/ overvoltage protection
• Under-/ overfrequency protection
• Breaker failure protection
• Negative-sequence protection
• Phase-sequence monitoring
• Auto-reclosure
• Fault locator
• Lockout
Control functions/ programmable logic
• Commands f. ctrl of CB and of isolators
• Control via keyboard, binary inputs,
DIGSI 4 or SCADA system
• User-defined logic with CFC
( e.g. interlocking)
Monitoring functions
• Operational measured values V, I, f
• Energy metering valuesWp, Wq
• Circuit-breaker wear monitoring
• Slave pointer
• Trip circuit supervision
• Fuse failure monitor
• 8 oscillographic fault records
Communication interfaces
• System interface
– IEC 60870-5-103/ IEC 61850
– PROFIBUS-FMS/ -DP
– DNP 3.0/ MODBUS RTU
• Service interface for DIGSI 4 ( modem)
• Front interface for DIGSI 4
• Time synchronization via IRIG B/ DCF77
Hardware
• 4 current transformers
• 3 voltage transformers
• 8/ 11 binary inputs
• 8/ 6 output relays |
Indomonster Priority 15th Year
