To Next PageTo Next Page
Need help?Do you have a question about the Siemens 7SR51 and is the answer not in the manual?
General| Brand | Siemens |
|---|---|
| Model | 7SR51 |
| Category | Protection Device |
| Language | English |
Introduction to the manual, including purpose, target audience, and scope.
Information regarding the use of third-party open-source software included in the product.
Identifies the specific relay series covered by this manual.
Overview of the device's functions including protection, supervision, control, and communication.
Details the device's current (CT) and voltage (VT) input configurations.
Explains the organization of device functions into groups and elements.
Describes the device startup process and initial display messages.
Covers time synchronization, setting the time source, and clock behavior.
Details the components of the device fascia, including LCD, buttons, and LEDs.
Explains how to configure device parameters, operating modes, and settings.
Describes the configuration of current and voltage transformer inputs.
Details the functions, structure, and configuration of binary inputs.
Explains the functions, structure, and configuration of binary outputs.
Covers demand/data logs, waveform records, fault records, and event logs.
Describes communication interfaces like USB, RS485, and Ethernet.
Explains how to define logic equations for custom control schemes.
Overview of function templates, groups, and elements.
Details the available functions and their typical analogue input requirements.
Explains how to enable/disable function groups and elements.
Functionality and application of load blinders to block overcurrents.
Details on 3-phase undervoltage protection, its logic, and settings.
Describes power protection functions for detecting abnormal power levels.
Details on instantaneous overcurrent protection for phase faults.
Explains time-delayed overcurrent protection characteristics and settings.
Covers directional control for overcurrent and earth fault protection.
Details high impedance restricted earth fault protection principles and settings.
Monitors circuit breaker status and provides backup trip signal if CB fails.
Detects open circuit CT connections and provides alarms.
Detects loss of voltage supply due to VT fuse operation and provides alarms.
Monitors integrity of wiring connections for circuit breaker close coils.
Monitors integrity of wiring connections for circuit breaker trip coils.
Detects inrush currents to block mal-operation during transformer switch-in.
Overview of device control capabilities via fascia, menus, and inputs/outputs.
Configuration and monitoring of circuit breaker open/close status and operations.
Details on setting up autoreclose sequences for various fault types.
Explains how measurands are recorded and displayed.
Lists and describes the various instruments and measured values available.
Provides additional notes on instrument measurements and communications.
General guidelines and precautions for performing functional tests.
Describes tests for binary inputs, outputs, and analogue measurements.
Procedure for testing directional earth fault elements.
Guidance on testing circuit breaker operations and auxiliary contacts.
Tests for integrating protection functions and circuit breaker failure logic.
Details procedures for testing various protection functions.
Provides typical accuracy and reference values for device measurements.
Technical data for 3-phase and single-phase load blinder settings.
Technical data for 3-phase undervoltage protection parameters.
Technical data for power protection settings and operating levels.
Technical data for definite and inverse time negative-sequence overcurrent.
Technical data for thermal overload protection, including operating times.
Technical data for instantaneous overcurrent protection settings.
Technical data for circuit-breaker failure protection parameters.
Technical data for calculated instantaneous earth fault protection.
Technical data for time-delayed overcurrent protection characteristics.
Technical data for 3-phase overvoltage protection settings.
Technical data for neutral voltage displacement protection settings.
Technical data for single-phase overvoltage protection settings.
Technical data for CT supervision based on current reference.
Technical data for CT supervision based on voltage reference.
Technical data for VT supervision parameters.
Technical data for directional overcurrent protection settings.
Technical data for frequency protection settings (over/under frequency).
Technical data for high-impedance restricted earth-fault protection.
Product description and order numbers for relays and accessories.
Illustrations of typical CT connections.
Illustrations of typical VT configuration settings and connections.
