Benefits of Siemens SICAM FSI Short-circuit Indicator for Overhead Lines
- Enhanced Network Reliability: Increased availability of overhead line networks, minimizing downtime.
- Rapid Fault Detection and Localization: Quick identification and precise pinpointing of faults, providing critical information to maintenance teams.
- High-Sensitivity Fault Detection: Reliable detection of high-impedance faults, starting from a low current threshold of 50A.
- Energy-Efficient Design: Self-sustained sensors reduce power consumption, extending the battery life to 10 years.
- Robust Security: Advanced security measures, including a unique security key and IPsec encryption, protect against unauthorized access.
- User-Friendly Configuration: Simplified setup process using QR codes and web browser, eliminating the need for complex DIP switch configurations.
- Maintenance-Free Operation: Designed for long-term reliability, requiring only battery replacement after 10 years.
- Clear Battery Life Indicator: A large display on the device indicates the initial commissioning year, providing a visual cue for battery replacement.
- Fault Type Indication: Different flashing light frequencies signal specific fault types, aiding rapid and accurate diagnosis by maintenance teams.
Functions of Siemens SICAM FSI Short-circuit Indicator for Overhead Lines
Fault Detection
- Trip threshold setting range from 75 A to 1500 A
Inom setting is user configurable from 50 to 500 A enabling closer coordination with the upstream protection system for the network. Trip time is user-configurable between 1.5*Inom and 3*Inom (in steps of 0.5 Inom). - ∆I trigger setting 5 A to 160 A
The rate of change of the current (∆I) setting is user-configurable in steps of 5 A up to 80 A, 120 A, and 160 A. - Inrush restraint
Settable time delays for inrush conditions or step changes in load conditions. - Presence/absence of voltage detection for fault confirmation
Configuration
- The SICAM FSI – 6MD2314-1AB10 – can be parameterized using “FSI Web Configurator” software.
In addition to the above, the SICAM FSI- 6MD2314-1AB11 – can be parameterized via the SICAM FCG over the wireless Interface.
Message acknowledgment / User configurable:
- By magnet
- Automatically at system voltage restoration
- Automatically over a specified time (user configurable time)
- Remotely with an acknowledgment signal from the control center
Auxiliary voltage
- Battery (3.6V) service life approx. 10 years
Temperature range
- -25 °C to +70 °C
Housing
- Polycarbonate, UV-resistant
- Protection class: IP65
Mounting
- The SICAM FSI is clamped onto the overhead line via the hot stick.
Specification of Siemens SICAM FSI Short-circuit Indicator for Overhead Lines
| Rated voltage (Vrated) | 3.3KV, 6.6 kV, 11 kV, 12.5 kV, 13.8 kV, 22 kV, 25 kV, 33 kV, 34.5 kV, 44 kV, 45 kV, 66 kV, and 69 kV |
| Maximum operating voltage |
83 kV |
| Maximum operating current |
1500 A |
| Maximum continuous operating current |
800 A |
| Operating current range | 0 A to 1500 A |
| System frequency | 50 Hz or 60 Hz network as per IEC 62689-1 |
| Grounding type | Solidly grounded system or resistive starpoint grounded systems |
| Detection of voltage presence/absence |
supported |
| Fault detection time | 2 cycles ± 1 cycle |
| Current measurement accuracy |
± 10 % or ± 5 A whichever is greater from 0 A to 800 A |
| Power source | Lithium-thionyl chloride batteries (Each battery: 3.6 V, 19000 mAh). B-Sensor Type 1: 2 batteries, B-Sensor Type 2: 3 batteries 10 years of expected operational life under standard operating temperature of 25 °C |
| Total fault-indication time | B-Sensor Type 1: 1500 h of LED flashing B-Sensor Type 2: 400 h of LED flashing |
| Cable overall diameter | 5 mm to 40 mm (non-insulated) 15 mm to 40 mm (insulated) |
| Non-insulated conductor type |
Aluminum Conductor Steel Reinforced (ACSR), All Aluminum Alloy Conductor (AAAC) |
| Insulated conductor type | Single core, aluminum conductor steel reinforced with/without water-blocking, XLPE insulated |
| Temperature withstand of clamping material |
230°C continuous |
| Fault current threshold (Iset) |
10 A to 1500 A |
| Auto threshold fault factor |
2X to 4X (steps of 1X) |
| DI current | 5 A to 80 A (steps of 5 A), 120 A, 160 A Starting from 10 A phase current |
| Fault-indication time | B-Sensor Type 1: 2 h to 16 h (steps of 1 h) B-Sensor Type 2: 2 h to 4 h (steps of 1 h) |
