Monitoring Functions - Siemens 7SR11 Argus Manual

7SR11 and 7SR12 Argus
Overcurrent Relays
Description
The 7SR11 & 7SR12 are overcurrent protection relays
developed to enhance the Argus family of products by
providing a familiar product using the latest generation of
hardware technology.
The 7SR11 overcurrent and earth fault relays and the 7SR12
directional relays are available in single and four pole
variants.
Housed in a 4U high, size E4 case, these relays provide
protection, monitoring, instrumentation and metering with
integrated input and output logic, data logging & fault
reports. Communication access to the relay functionality is
via a front USB port for local PC connection or rear electrical
RS485 port for remote connection.
Function Overview
Protection
37 Undercurrent
46BC Broken Conductor / Load Unbalance
46NPS Negative Phase Sequence Overcurrent
49 Thermal Overload
50 Instantaneous Overcurrent
50G/N/SEF Instantaneous Earth Fault
50BF Circuit Breaker Fail
51 Time Delayed Overcurrent
51G/N/SEF Time Delayed Measured/Derived/Sensitive Earth
Fault
64H High Impedance REF
27/59 Under/Over Voltage
47 Negative Phase Sequence Voltage
51V Voltage Controlled Overcurrent
59N Neutral Voltage Displacement
67/50 Directional Instantaneous Overcurrent
67/50G/N Directional Instantaneous Earth Fault
67/51 Directional Time Delayed Overcurrent
67/51G/N Directional Time Delayed Earth Fault
81HBL2 Inrush Detector
Supervision
60CTS CT Supervision
74T/CCS Trip & Close Circuit Supervision
60VTS VT Supervision
Siemens Protection Devices Limited
Control
79 Auto Reclose
86 Lockout
CB Control
Features
Cold Load Settings
Four Settings Groups
Password Protection – 2 levels
User Programmable Logic
Self Monitoring
Circuit Breaker Trip and Maintenance Counter
Trip Timers
User Interface
20 Character x 4 Line Backlit LCD
Menu Navigation Keys
9 User Programmable Tri-colour LEDs
User Language Configuration

Monitoring Functions

Primary/Secondary Current Phases and Earth
Direction
Primary/Secondary Line and Phase Voltages
Apparent Power and Power Factor
Real and Reactive Power
W Hr & VAr Hr Forward and Reverse
Historical Demand Record
Positive Phase Sequence (PPS) Voltage & Current
Negative Phase Sequence (NPS) Voltage & Current
Zero Phase Sequence (ZPS) Voltage
Hardware
1 CT 3 Binary Inputs 5 Binary Outputs
4 CT 3 Binary Inputs 5 Binary Outputs
4 CT 6 Binary Inputs 8 Binary Outputs
1 CT 3 VT 3 Binary Inputs 5 Binary Outputs
4 CT 3 VT 3 Binary Inputs 5 Binary Outputs
4 CT 3 VT 6 Binary Inputs 8 Binary Outputs
Data Storage and
Communication
Front USB port + Rear RS485 port
Protocols - IEC60870-5-103, DNP3.0 or Modbus RTU
Event Records – User Configurable
Fault Records
Waveform Records
Measurands
Commands
Time Synchronism
Viewing and Changing Settings
2