EHV PROTECTION - LINE DIFFERENTIAL PROTECTION SYSTEM
ASM487D
Features:
ANSI: 50 | 87L | 50BF | 50N | 60 | 49 | 68 | 46 | FL | 67 | 67N | 32 | 21 | 68 | 79 | 37 | 60 | 85 | 27 | 59 | 47 | 59N | 81
- Distance Protection (Five Independent Zones) – Ensures quick, selective isolation of faults.
- Line Differential Protection – Phase-segregated protection with redundancy for critical infrastructure. Advanced Auto-Reclosing Function(78) – Supports up to four reclosing shots with customizable dead times.
- Directional Overcurrent Protection (67, 67N) – Phase and ground fault detection. Under & Over Voltage Protection (27, 59, 59N) – Protects against voltage fluctuations.
- Frequency Protection (81O/U) – Six independent stages with user-defined thresholds.
- Thermal Overload Protection (49) – Ensures safe operation under heavy loads. Power Swing Detection & Out-of-Step Protection – Prevents mis operations during stable swings.
- Breaker Failure Protection – Isolates only the affected zone, keeping the system operational.
- Trip Circuit Supervision (95T) – Continuous monitoring of breaker trip circuits. Programmable Logic & LEDs – Customizable 16 dual-color LEDs & 32 programmable inputs/outputs.
