Model: 7SR158 Argus – 3xV
Protection Functions:
• Under/Over Voltage (27/59)
• Under/Over Frequency (81)
• Rate of Change of Frequency (81R)
• Negative Phase Sequence Voltage
• Neutral Voltage Displacement
• Voltage Vector Shift (78)
Supervision Functions:
• Trip and Close Circuit Supervision
• Lockout
Monitoring Functions:
• Primary/Secondary Line & Phase Voltages
• Historical Demand Record
• PPS, NPS & ZPS Voltage
Additional Features:
• Four Setting Groups
• Two-Level Password Protection
• Self-Monitoring
• Fault, Event & Waveform Records
• Programmable Logic & Virtual I/O
• Front USB & Rear RS485 Communication (MODBUS RTU / IEC 60870-5-103 / DNP 3.0)
• Size: E4 case (3 voltage inputs, 6 binary inputs, 8 binary outputs)
Main Function: Differential Protection
Interoperability: SIPROTEC 5 and SIPROTEC 4 devices
Tripping: 1-pole and 3-pole, min. time 9 ms
Inputs / Outputs:
12 predefined standard variants
4/4 or 8/8 current / voltage transformers
5–31 binary inputs
8–46 binary outputs
Hardware Flexibility: Adjustable I/O structure within SIPROTEC 5 modular system
Housing Width: 1/3 × 19" to 2/1 × 19"
As Standard: Conformal coating
Applications:
Line protection for all voltage levels
1- and 3-pole tripping
Protection for overhead lines, cables, and breaker-and-a-half switchgear
Transformers and compensating coils in protection zone
Ground fault detection
Communication via fiber optic, two-wire, or network media
PMU functionality
Smooth interoperability between SIPROTEC 4 and 5
4 current transformer inputs
0 / 3 voltage transformer inputs
3 / 7 binary inputs (thresholds configurable via software)
5 / 8 binary outputs (2 changeover)
0 / 5 RTD (resistance temperature detector) inputs
1 life contact
Pluggable current and voltage terminals
Functions:
Definite and inverse time-overcurrent protection (phase/ground) (50, 50N, 51, 51N)
Directional time-overcurrent protection (ground) (67N)
Directional overcurrent protection (ground) (definite/inverse) (67Ns, 50Ns)
Displacement voltage, zero-sequence voltage (59N)
Trip-circuit supervision (74TC)
Undercurrent monitoring (37)
Temperature monitoring (38)
Thermal overload protection (49)
Load jam protection (51M)
Locked rotor protection (14)
Intermittent ground fault protection
Directional intermittent ground fault protection (67Ns)
Overcurrent protection, voltage-controlled (51V)
Restart inhibit (66/86)
Undervoltage/overvoltage protection (27/59)
Forward-power, reverse-power protection (32)
Power factor (55)
Overfrequency/underfrequency protection (81O/U)
Circuit-breaker failure protection (50BF)
Phase-balance current protection (negative-sequence protection) (46)
Unbalance-voltage protection and/or phase-sequence monitoring (47)
Start-time supervision (48)
Lockout (86)
Rate-of-frequency-change protection (81R)
Rate-of-voltage-change protection (27R/59R)
Applications:
Motor Protection: Designed for protecting induction-type asynchronous motors.
Transformer Protection: Offers backup protection for transformer differential protection, with effective inrush suppression.
Distribution Systems: Ideal for use in distribution systems and industrial environments, requiring minimal space.
