GE TRANSFORMER MANAGEMENT RELAY 745 Manuals

Manuals and User Guides for GE TRANSFORMER MANAGEMENT RELAY 745. We have 1 GE TRANSFORMER MANAGEMENT RELAY 745 manual available for free PDF download: Instruction Manual

GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual (282 pages)

Brand: GE | Category: Control Systems | Size: 6.03 MB

Table of Contents
3
Product Overview
9
Introduction
9
Description
9
Protection Features Summary
9
Order Codes
11
Specifications
12
Applicability
12
Inputs
12
Protection Elements
13
Outputs
15
Miscellaneous
15
Getting Started
17
Using the Front Panel Display
17
Maneuvering
17
Changing Setpoints
18
Security
21
Installation
21
Changing the Passcode
21
Disabling and Enabling Passcode Security
22
Installation
23
Drawout Case
23
Case Description
23
Panel Cutout
23
Case Mounting
24
Unit Withdrawal and Insertion
24
Typical Wiring
26
Description
26
Rear Terminal Layout
26
Wiring Diagrams
28
Phase Sequence and Transformer Polarity
30
Ac Current Transformer Inputs
30
Ac Voltage Input
31
Logic Inputs
31
Control Power
32
Analog Input
32
Tap Position Input
32
Rtd Driver/Sensor
33
Output Relays
33
Solid State Trip Output
33
Analog Outputs
33
Rs485 / Rs422 Communications
34
Rs232 Front Panel Program Port
35
Irig-B
36
Dielectric Strength Testing
36
Human Interfaces
37
Hardware Interface
37
Front Panel
37
Display
37
Leds
38
Led Indicators
38
Program Port
39
Keypad
39
745Pc Software Interface
41
Overview
41
Requirements
41
Toolbar and Menus
41
Hardware Configuration
42
745Pc Installation
44
Startup and Communications Configuration
45
Using 745Pc
46
Setpoints
51
Overview
51
Setpoint Message Map
51
Setpoint Entry
54
Setpoint Write Access
54
Auto-Configuration
55
Introduction
55
Dynamic Ct Ratio Mismatch Correction
55
Phase Shifts on Three-Phase Transformers
57
Phase Angle Correction
58
Zero-Sequence Component Removal
59
Transformer Types
60
Phase Shifts
72
S1 745 Setup
73
Passcode
73
Preferences
73
Communications
74
Dnp Communications
75
Resetting
76
Clock
76
Default Messages
77
Scratchpad
77
Installation
78
Upgrade Options
78
S2 System Setup
79
Description
79
Transformer
79
Winding
80
Onload Tap Changer
82
Harmonics
82
Flexcurves
83
Voltage Input
83
Ambient Temperature
84
Analog Input
85
Demand Metering
86
Analog Outputs
87
S3 Logic Inputs
88
Description
88
Logic Inputs 1 to 16
88
Virtual Inputs
88
S4 Elements
89
Introduction to Elements
89
Setpoint Group
90
Differential Element
90
Instantaneous Differential
98
Phase Overcurrent
99
Neutral Overcurrent
106
Ground Overcurrent
109
Restricted Ground (Differential Ground)
112
Negative Sequence Overcurrent
115
Frequency
118
Overexcitation
123
Harmonics
127
Insulation Aging / Loss of Life
130
Analog Level 1
134
Current Demand
135
Transformer Overload
136
Tap Changer Failure
137
Voltage
158
Demand
158
Ambient Temperature
159
Analog Input
160
Energy
161
A3 Event Recorder
162
Event Data Clear
162
Event Records
162
A4 Product Info
165
Technical Support
165
Revision Codes
165
Calibration
165
Target and Flash Messages
166
Target Messages
166
Flash Messages
168
Communications
171
Overview
171
Protocols
171
Physical Layer
171
Modbus Protocol
172
Description
172
Ge Multilin Modbus Implementation
172
Electrical Interface
172
Data Frame Format and Data Rate
172
Data Packet Format
173
Algorithm
174
Message Timing
174
Modbus Functions
175
Supported Modbus Functions
175
Exception Responses
178
Reading the Event Recorder
178
Reading Trace Memory
179
Accessing Data Via the User Map
179
Function Code Substitutions
181
Memory Map Organization
182
Modbus Memory Map
183
Memory Map Data Formats
218
Dnp Communications
231
Device Profile Document
231
Implementation Table
233
Dnp Point Lists
234
Commissioning
239
General
239
Introduction
239
Testing Philosophy
239
Safety Precautions
240
Conventions
240
Test Equipment
241
Preliminary Work
242
Description
242
Dielectric Strength Testing
243
Logic Inputs and Output Relays
244
Logic Inputs
244
Output Relays
244
Display, Metering, Communications, and Analog Outputs
245
Description
245
Current Inputs
245
Voltage Input
246
Transformer Type Selection
246
Ambient Temperature Input
247
Analog Outputs
249
Tap Position
249
Protection Schemes
250
Precautions
250
Harmonic Restrained Percent Differential
250
Instantaneous Differential Protection
255
Phase Time Overcurrent
255
Phase Instantaneous Overcurrent
257
Neutral Time Overcurrent
258
Neutral Instantaneous Overcurrent
259
Ground Time Overcurrent
260
Ground Instantaneous Overcurrent
262
Restricted Ground Fault
263
Negative Sequence Time Overcurrent
265
Negative Sequence Instantaneous Overcurrent
266
Frequency
267
Overexcitation
272
Insulation Aging
273
Tap Monitor Failure
273
Auxiliary Protection and Monitoring Functions
274
Thd Level Scheme
274
Harmonic Derating Function
275
Transformer Overload
275

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GE TRANSFORMER MANAGEMENT RELAY 745 Manuals

GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual (282 pages)

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