Allen-Bradley 857 Manuals

Manuals and User Guides for Allen-Bradley 857. We have 2 Allen-Bradley 857 manuals available for free PDF download: User Manual, Quick Start Manual

Allen-Bradley 857 User Manual

Allen-Bradley 857 User Manual (272 pages)

Brand: Allen-Bradley | Category: Engine | Size: 3.89 MB

Table of Contents

Table of Contents
3
Chapter 1 Overview

13
- Introduction
  13
- Main Relay Features
  13
- User Interface
  16
- Operating Safety
  16
Chapter 2 Local Panel User Interface

17
- Relay Front Panel
  17
- Display
  17
- Menu Navigation and Pointers
  19
- Keypad
  19
- Operation Indicators
  20
- Resetting Latched Indicators and Output Relays
  21
- Adjusting Display Contrast
  21
- Local Panel Options
  21
- Navigating in Menus
  21
- Main Menu
  23
- Menu Structure of Protection Functions
  25
- Setting Groups
  28
- Fault Logs
  29
- Operating Levels
  30
- Opening Access
  31
- Password Handling
  31
- Operating Measures
  32
- Control Functions
  32
- Measured Data
  33
- Reading Event Register
  36
- Forced Control (Force)
  36
- Configuration and Parameter Setting
  37
- Parameter Setting
  38
- Setting Range Limits
  39
- Disturbance Recorder Menu DR
  40
- Configuring Digital Inputs DI
  41
- Configuring Digital Outputs DO
  41
- Protection Menu Prot
  41
- Configuration Menu CONF
  42
- Protocol Menu Bus
  45
- Single Line Diagram Editing
  49
- Setpoints PC Software
  50
- Maximum Number of Protection Stages
  51
- Setting Groups
  52
- Forcing Start or Trip Condition for Testing
  52
- Forcing Start or Trip Condition for Testing Purposes
  52
- Start and Trip Signals
  53
- Output Matrix
  53
- Blocking
  53
- Retardation Time
  53
- Reset Time (Release Time)
  54
- Hysteresis or Dead Band
  55
- Function Dependencies
  55
- Current Protection Function Dependencies
  56
- Overcurrent Stage I> (50/51)
  56
- Three Independent Stages
  56
- Inverse Operation Time
  56
- Inverse Time Limitation
  57
- Cold Load and Inrush Current Handling
  57
- Setting Groups
  57
- Recorded Values of the Latest Eight Faults
  59
- Directional Overcurrent Protection I > (67)
  60
- Four Independent Stages
  62
- Dir > (67)
  62
- Inverse Operation Time
  62
- Inverse Time Limitation
  62
- Cold Load and Inrush Current Handling
  62
- Setting Groups
  62
- Recorded Values of the Latest Eight Faults
  65
- Broken Line Protection I /I > (46R)
  65
- Inverse Delay
  67
- More Stages (Definite Time Delay Only)
  67
- Setting Groups
  67
- Recorded Values of the Latest Eight Faults
  69
- Incorrect Phase Sequence Protection I >> (47)
  69
- Stall Protection Ist> (48)
  69
- Frequent Start Protection N> (66)
  71
- Undercurrent Protection I< (37)
  73
- Directional Earth Fault Protection I
  73
- Polarization
  74
- Modes for Different Network Types
  74
- Input Signal Selection
  75
- Intermittent Earth Fault Detection
  75
- Two Independent Stages
  75
- Inverse Operation Time
  76
- Inverse Time Limitation
  76
- Setting Groups
  76
- Recorded Values of the Latest Eight Faults
  79
- Earth Fault Protection I > (50N/51N)
  80
- Input Signal Selection
  81
- Intermittent Earth Fault Detection
  81
- Four or Six Independent Undirectional Earth Fault Overcurrent Stages
  81
- Inverse Operation Time (I > Stage Only)
  82
- Inverse Time Limitation
  82
- Setting Groups
  82
- Recorded Values of the Latest Eight Faults
  85
- Intermittent Transient Earth Fault Protection I
  85
- Direction Algorithm
  86
- I Pick-Up Sensitivity
  86
- Co-Ordination with U > Back-Up Protection
  86
- Co-Ordination with Normal Directional Earth Fault Protection Based on Fundamental Frequency Signals
  86
- Auto Reclosing
  87
- Intermittent Time
  87
- Operation Time Setting and Actual Operation Time
  87
- Setting Groups
  88
- Recorded Values of the Latest Eight Faults
  89
- Capacitor Bank Unbalance Protection
  90
- Compensation Method
  91
- Compensation and Location
  91
- Zero Sequence Voltage Protection U > (59N)
  94
- Measuring the Residual Voltage
  94
- Two Independent Stages
  94
- Setting Groups
  94
- Recorded Values of the Latest Eight Faults
  95
- Thermal Overload Protection T> (49)
  96
- Thermal Model
  96
- Time Constant for Cooling Situation
  97
- Heat Capacitance, Service Factor and Ambient Temp
  97
- Example of a Behavior in the Thermal Model
  98
- Initial Temperature Rise after Restart
  98
- Alarm Function
  98
- Overvoltage Protection U> (59)
  100
- Three Independent Stages
  101
- Configurable Release Delay
  101
- Configurable Hysteresis
  101
- Setting Groups
  101
- Recorded Values of the Latest Eight Faults
  102
- Undervoltage Protection U< (27)
  103
- Blocking During VT Fuse Failure
  103
- Self Blocking at very Low Voltage
  103
- Three Independent Stages
  104
- Setting Groups
  104
- Recorded Values of the Latest Eight Faults
  105
- Reverse Power and Underpower Protection P< (32)
  106
- Overfrequency and Underfrequency Protection F>, F< (81H/81L)
  107
- Protection Mode for F>< and F><>< Stages
  107
- Undervoltage Self Blocking of Underfrequency Stages
  107
- Initial Self Blocking of Underfrequency Stages
  107
- Four Independent Frequency Stages
  107
- Setting Groups
  107
- Recorded Values of the Latest Eight Faults
  109
- Rate of Change of Frequency (ROCOF) Protection Df/Dt (81R)
  109
- Frequency Behavior During Load Switching
  109
- Description of ROCOF Implementation
  110
- ROCOF and Frequency over and under Stages
  110
- Definite Operation Time Characteristics
  110
- Inverse Operation Time Characteristics
  111
- Synchrocheck Protection (25)
  113
- Circuit-Breaker Failure Protection CBFP (50BF)
  120
- Recorded Values of the Latest Eight Faults
  121
- Programmable Stages (99)
  121
- Eight Independent Stages
  123
- Setting Groups
  123
- Recorded Values of the Latest Eight Faults
  124
- Arc Fault Protection (50ARC/50NARC) (Optional)
  124
- Three Stages for Arc Faults
  124
- Light Channel Selection
  124
- Binary Input
  125
- Binary Output
  125
- Delayed Light Indication Signal
  125
- Pick-Up Scaling
  125
- Recorded Values of the Latest Eight Faults
  127
- Inverse Time Operation
  127
- Stage Specific Inverse Delay
  127
- Operation Modes
  127
- Local Panel Graph
  128
- Inverse Time Setting Error Signal
  128
- Limitation
  128
- Standard Inverse Delays IEC, IEEE, IEEE2, RI
  130
- IEC Inverse Time Operation
  130
- IEEE/ANSI Inverse Time Operation
  133
- IEEE2 Inverse Time Operation
  136
- RI and RXIDG Type Inverse Time Operation
  138
- Programmable Inverse Time Curves
  141
- Inverse Time Setting Error Signal
  141
- Limitations
  141
- Supporting Functions
  143
- Event Log
  143
- Event Enabling/Masking
  143
- Event Buffer Overflow
  144
- Disturbance Recorder
  144
- Triggering the Recorder
  144
- Reading Recordings
  144
- Number of Channels
  145
- Cold Load Pick-Up and Inrush Current Detection
  147
- Cold Load Pick-Up
  147
- Application for Cold Load Detection
  147
- Inrush Current Detection
  147
- Application for Inrush Current Detection
  147
- Voltage Sags and Swells
  149
- Voltage Interruptions
  150
- Current Transformer Supervision
  152
- Voltage Transformer Supervision
  153
- Circuit Breaker Condition Monitoring
  154
- Breaker Curve and Its Approximation
  154
- Setting Alarm Points
  155
- Clearing "Operations Left" Counters
  156
- Operation Counters to Monitor the Wearing
  156
- Logarithmic Interpolation
  156
- Example of the Logarithmic Interpolation
  157
- Example of Operation Counter Decrementing
  157
- Energy Pulse Outputs
  159
- Scaling Examples
  160
- System Clock and Synchronization
  162
- Adapting Auto Adjust
  162
- Time Drift Correction Without External Sync
  162
- Synchronization with DI
  164
- Synchronization Correction
  164
- Sync Source
  164
- Deviation
  164
- Auto-Lag/Lead
  165
- Running Hour Counter
  165
- Timers
  166
- Combined Overcurrent Status
  167
- Self-Supervision
  169
- Diagnostics
  169
- Earth-Fault Location
  171
- Measurement Functions Measurement Accuracy
  173
- RMS Values
  174
- RMS Currents
  174
- RMS Voltages
  174
- Harmonics and Total Harmonic Distortion (THD)
  175
- Demand Values
  175
- Minimum and Maximum Values
  176
- Voltage Measurement Mode
  177
- Power Calculation
  178
- Direction of Power and Current
  180
- Symmetric Components
  181
- Primary, Secondary and Per Unit Scaling
  184
- Current Scaling
  184
- Per Unit [Pu] Scaling
  185
- Voltage Scaling
  187
- Per Unit [Pu] Scaling of Line-To-Line Voltages
  188
- Control Functions
  191
- Output Relays
  191
- Digital Inputs
  192
- Virtual Inputs and Outputs
  194
- Output Matrix
  195
- Blocking Matrix
  196
- Controllable Objects
  196
- Object States
  197
- Basic Settings for Controllable Objects
  197
- Output Signals of Controllable Objects
  197
- Settings for Read-Only Objects
  198
- Controlling with DI
  198
- Local/Remote Selection
  198
- Auto-Reclose Function (79)
  199
- Manual Closing
  200
- Manual Opening
  200
- Reclaim Time Setting
  200
- Support for 2 Circuit Breakers
  201
- Blocking of AR Shots
  201
- Starting AR Sequence
  201
- Critical AR Request
  202
- AR Running Matrix Signal
  202
- Final Trip Matrix Signals
  202
- DI to Block AR Setting
  202
- AR Info for MIMIC Display Setting
  202
- Logic Functions
  206
Chapter 7 Communications

207
- Communication Ports
  207
- Local Port
  207
- Remote Port X9
  209
- Extension Port
  211
- Optional 61850 Interface
  211
- Communication Protocols
  212
- PC Communication
  212
- Modbus TCP and Modbus RTU
  212
- SPA-Bus
  215
- Iec 60870-5-103
  215
- Dnp 3.0
  217
- Iec 60870-5-101
  218
- Tcp/Ip
  220
- External I/O (Modbus RTU Master)
  220
- Iec 61850
  220
- Devicenet
  220
Chapter 8 Applications

221
- Substation Feeder Protection
  221
- Industrial Feeder Protection
  222
- Parallel Line Protection
  222
- Ring Network Protection
  224
- Trip Circuit Supervision
  224
- Internal Parallel Digital Inputs
  224
- Trip Circuit Supervision with One Digital Input
  225
- Trip Circuit Supervision with Two Digital Inputs
  227
Chapter 9 Connections

229
- Rear Panel View
  229
- Auxiliary Voltage
  233
- Serial Communication Connection
  233
- Pin Assignments of Communication Options
  235
- Front Panel Connector
  238
- Optional Two-Channel Arc Protection Card
  239
- Optional Digital I/O Card (DI19/DI20)
  239
- Block Diagrams
  240
- Optional Arc Protection
  241
- Connection Examples
  242
Chapter 10 Technical Data

247
- Connections
  247
- Digital Inputs
  248
- Trip Contacts
  248
- Tests and Environmental Conditions
  250
- Non-Directional Current Protection
  251
- Incorrect Phase Sequence I
  253
- I >>>, I >>>> (50N/51N)
  255
- Directional Current Protection
  256
- Dir >> (67)
  256
- Frequent Start Protection
  258
- Directional Earth Fault Stages I
  258
- Voltage Protection
  259
- Frequency Protection
  260
- Power Protection
  262
- Synchrocheck Function
  262
- Circuit-Breaker Failure Protection
  263
- Arc Fault Protection Stages (Option)
  263
- Arc Protection Stage Arci> (50AR), Option
  263
- Supporting Functions
  264
- Arc Protection Stage Arci 02 > (50AR), Option
  264
- Disturbance Recorder (DR)
  265
- Transformer Supervision
  265
- Voltage Interruptions
  266
Chapter 11 Abbreviations and Symbols

267

Allen-Bradley 857 Quick Start Manual

Allen-Bradley 857 Quick Start Manual (38 pages)

Protection System for Feeder and Motor Protection

Brand: Allen-Bradley | Category: Protection Device | Size: 1.97 MB

Table of Contents

Table of Contents
3
Equipment
5
Supported Applications
5
Who Should Use this Manual
5
Installation
6
- Additional Resources
  6
Chapter 1 Setpointps

7
- User Interface
  7
  - Firmware Compliance
    8
- Operating Safety
  8
  - Protection Functions
    8
- General Precautions
  10
  - Before Installation
    10
- Catalog Number Explanation
  11
Chapter 2

13
Protection System Front Panel

21
- Chapter 3 Menu Navigation and Pointers
  
  22
  - Communication Ports
    24
  - Digital and Virtual Inputs
    25
    
    Virtual Inputs and Outputs
    26
    
    Output Matrix
    26
- Chapter 4 Step 1: Gather Required Information
  
  29

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