GE Multilin 745

GE Multilin 745

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Typical Wiring745

Transformer Management Relay

Installation

http://www.GEindustrial.com/multilin

3–8

GE Multilin

FIGURE 3–11: Typical Wiring for Three Winding Transformer

MULTILIN

Table of Contents

Default Chapter3
- Table of Contents3
Getting Started9
- Cautions and Warnings9
- Inspection Checklist9
- Manual Organization10
Using the Relay10
- Menu Navigation10
- Panel Keying Example12
Changing Setpoints13
- Introduction13
- Using the HELP Key13
- Numerical Setpoints13
- Enumeration Setpoints13
- Text Setpoints14
Security15
- Installation15
- Changing the Passcode15
Overview17
Introduction17
- Description17
- Protection Features18
- Order Codes19
Specifications20
- Applicability20
- Inputs20
- Protection Elements21
- Outputs22
- Miscellaneous23
Installation25
- Case Description25
- Panel Cutout25
- Case Mounting26
- Unit Withdrawal and Insertion27
Typical Wiring29
- Description29
- Rear Terminal Layout29
- Wiring Diagrams31
- Phase Sequence and Transformer Polarity33
- AC Voltage Input34
- Logic Inputs34
- Control Power35
- Tap Position Input35
- RTD Driver/Sensor35
- Output Relays36
- Solid State Trip Output36
- Analog Outputs36
- RS485 / RS422 Communications37
- RS232 Front Panel Program Port38
- Irig-B39
- Dielectric Strength39
Interfaces41
Hardware Interface41
- Front Panel41
- Display41
- Leds42
- LED Indicators42
- Program Port43
- Keypad43
- Setpoint Entry45
- Diagnostic Messages46
- Flash Messages46
Enervista Software Interface47
- Overview47
- Hardware47
Connecting Enervista 745 Setup to the Relay51
- Connecting to the Relay54
Working with Setpoints and Setpoint Files55
- Engaging a Device55
- Entering Setpoints55
- File Support56
- Using Setpoints Files56
Upgrading Relay Firmware61
- Description61
- Saving Setpoints to a File61
- Loading New Firmware61
Advanced Enervista 745 Setup Features63
- Triggered Events63
- Waveform Capture (Trace Memory)63
- Trending (Data Logger)65
- Event Recorder67
- Modbus User Map68
- Viewing Actual Values69
Using Enervista Viewpoint with the 74571
- Plug and Play Example71
Setpoints75
Overview75
- Setpoint Message Map75
- Setpoint Entry78
- Setpoint Write Access78
Auto-Configuration79
- Introduction79
- Dynamic CT Ratio Mismatch Correction79
- Phase Angle Correction83
- Zero-Sequence Component Removal84
- Transformer Types85
- Phase Shifts97
S1 745 Setup98
- Passcode98
- Preferences98
- Communications99
- Resetting101
- Clock101
- Default Messages101
- Scratchpad102
- Installation103
- Upgrade Options103
S2 System Setup104
- Description104
- Transformer104
- Windings 1 to 3106
- Onload Tap Changer107
- Harmonics107
- Flexcurves108
- Voltage Input108
- Ambient Temperature109
- Analog Input110
- Demand Metering110
S3 Logic Inputs112
- Description112
- Logic Inputs 1 to 16112
- Virtual Inputs 1 to 16113
S4 Elements113
- Introduction to Elements113
- Setpoint Group115
- Differential Element115
- Instantaneous Differential122
- Phase Overcurrent123
- Neutral Overcurrent130
- Ground Overcurrent133
- Restricted Ground135
- Negative Sequence Overcurrent138
- Frequency140
- Overexcitation145
- Harmonics149
- Insulation Aging152
- Analog Input Level156
- Current Demand157
- Transformer Overload158
- Tap Changer Failure159
S5 Outputs160
- Introduction to Flexlogic160
- Flexlogic™ Rules161
- Output Relays162
- Trace Memory164
- Virtual Outputs165
- Timers165
S6 Testing165
- Description165
- Output Relays166
- Analog Outputs166
- Simulation167
- Factory Service171
Actual Values173
- Message Map173
A1 Status173
- Date and Time173
- Logic Inputs173
- Virtual Inputs173
- Output Relays176
- Virtual Outputs176
- Self-Test Errors176
A2 Metering177
- Current177
- Harmonic Content180
- Frequency182
- Tap Changer182
- Voltage182
- Demand182
- Ambient Temperature183
- Loss of Life184
- Analog Input184
- Power184
- Energy184
A3 Event Recorder185
- Event Data Clear185
- Event Records186
A4 Product Information188
- Technical Support188
- Revision Codes189
- Calibration189
Target and Flash Messages189
- Target Messages189
- Self-Test Errors191
- Flash Messages193
Commissioning195
General195
- Testing Philosophy195
- Test Equipment195
Preliminary Work198
- Description198
Logic Inputs and Output Relays199
- Logic Inputs199
- Output Relays200
Metering200
- Description200
- Current Inputs200
- Voltage Input201
- Ambient Temperature Input203
- Analog Outputs205
- Tap Position205
Protection Schemes205
- Precautions205
- Harmonic Restrained Percent Differential205
- Neutral Instantaneous Overcurrent 1216
- Negative Sequence Time Overcurrent222
- Negative Sequence Instantaneous Overcurrent224
- Frequency227
- Overexcitation230
- Insulation Aging231
- Tap Monitor Failure232
Auxiliary Protection and Monitoring Functions232
- Transformer Overload234
Placing the Relay into Service234
- Procedure234
Appendix235
- Revision History235
EU Declaration of Conformity236
GE Multilin Warranty237
- Warranty Statement237

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