Page 5 - Table of Contents; Instantaneous Neutral or Ground; Protective Function Configuration
Table of Contents Siemens Energy & Automation, Inc. i 1 Introduction ...............................................1 1.1 About this Manual ............................................. 11.2 Safety ................................................................ 11.3 Product Description ...........
Page 6 - ii; Data Acquisition
Table of Contents ii Siemens Energy & Automation, Inc. 7 Data Acquisition (cont.) 7.4 Metered Data .................................................. 46 7.4.1 Current Values ..................................... 467.4.2 Voltage Values ..................................... 467.4.3 Power Values .....
Page 7 - Introduction; About this Manual; Qualified Person
Introduction Siemens Energy & Automation, Inc. 1 1 Introduction The Intelligent SwitchGear System (ISGS) from Siemens is a high-speed, numerical, microprocessor-based protective relay designed to be easily incorporated into a computer- monitored medium voltage power system. The relay is designe...
Page 8 - will; Product Description; Standard Configuration
Introduction 2 Siemens Energy & Automation, Inc. Signal Words The signal words Danger , Warning , and Caution used in this manual indicate the degree of hazard that the user or operator can encounter. These words are defined as follows: Danger - indicates an imminently hazardous situation whic...
Page 9 - Optional Configurations; Metering
Introduction Siemens Energy & Automation, Inc. 3 1.3.2 Optional Configurations The ISGS relay is a dynamic, feature-rich device that can be used in numerous industrial and utility applications. It allows the addition of options or configuration changes at any time without discarding the basic ha...
Page 10 - Technical Specifications
Introduction 4 Siemens Energy & Automation, Inc. 1.5 Technical Specifications Applicable Standards ANSI / IEEE C37.90-1989 IEEE Standard Relays and Relay Systems Associated With Elec- tric Power Apparatus IEC 255-4 Single Input Energizing Quantity Measuring Relays With Depen- dent or Independent...
Page 11 - Installation
Installation Siemens Energy & Automation, Inc. 5 2 Installation This chapter explains the installation of the ISGS relay and includes procedures for unpacking, storing, mounting, and wiring the relay. Prior to installation, ensure that the system power is off and that you have all required tools...
Page 12 - Any unused terminals must remain discon-; Top
Installation 6 Siemens Energy & Automation, Inc. Mount the relay using the following steps. 1. Install the relay M1-type case in the panel opening on the switchgear equipment. 2. Connect the case ground to the terminal lug on the back of the M1-type case as shown in Figure 2.3 . 3. Wire as descr...
Page 13 - Internal Connections
Installation Siemens Energy & Automation, Inc. 7 Figure 2.5 Internal Connections Note: The relay disabled contact should be wired to plant-wide distributed control system or external alarm. 9 3 41 31 33 29 2 Trip 1Trip Common Relay Disabled 1 Relay DisabledAlarm Contact Relay Disabled 2 Trip 2 T...
Page 14 - Chapter 3; Removing
Installation 8 Siemens Energy & Automation, Inc. 2.5 Communications The ISGS relay must be connected to a host computer in order for it to communicate with other devices. The relay supports both RS-232 and RS-485 (optional) data inter- faces. The use of either of these data interfaces will allow...
Page 15 - User Interface; Arrow; LEDs
User Interface Siemens Energy & Automation, Inc. 9 3 User Interface Operation, parameter selection, and control of the ISGS relay are performed using the front panel controls and indicators. They consist of a 26-key membrane keypad, a 2-line by 16-character liquid crystal display (LCD), three li...
Page 16 - LCD; Password Protection
User Interface 10 Siemens Energy & Automation, Inc. The Trip LED is illuminated until the Target Reset key is depressed. Reset the Trip LED by momentarily depressing the Target Reset key. Note: If the Trip LED is on and power is removed, it will still be set to on when power is restored. 3.2.2 L...
Page 17 - Appendix C; Standard Operating Procedures
User Interface Siemens Energy & Automation, Inc. 11 3.4 Menu The ISGS relay menu (or memory map) is organized in a hier- archical structure that is made up of address blocks and addresses. The first level consists of address blocks. Each address block represents one complete function or two rela...
Page 18 - Yes
User Interface 12 Siemens Energy & Automation, Inc. Displaying function names (address blocks), parameter names and their settings or values (addresses), and subpa- rameter settings (subaddress, where applicable), does not require a password (except for viewing the password itself). Data can be ...
Page 21 - Hardware Configuration; Direct Addr; Power On Display; VSDF; Power On Meter Display; Chapter 7
Hardware Configuration Siemens Energy & Automation, Inc. 15 4 Hardware Configuration This chapter explains the device startup and how to config- ure the basic ISGS relay parameters. The relay must be con- figured with certain system parameters, such as phase sequence and frequency. In addition, ...
Page 22 - Device Configuration; Setting Binary Input Voltages; AC Source
Hardware Configuration 16 Siemens Energy & Automation, Inc. 4.2 Device Configuration The Device Configuration function allows you to set up the ISGS relay to match line frequency, phase sequence, and breaker connection settings of your system. The frequency parameter (1002) must be set to the no...
Page 23 - Changing Jumper Positions
Hardware Configuration Siemens Energy & Automation, Inc. 17 Figure 4.5 shows option board 2 and its jumpers. The draw- ing indicates the jumpers associated with each binary input. The enlarged set of pins shows an example of pin labeling and a jumper at location X17-X18. Figure 4.5 Option Board ...
Page 24 - Normal; VT Configuration
Hardware Configuration 18 Siemens Energy & Automation, Inc. 4.4 CT Configuration The CT Configuration function allows you to set up the ISGS relay to match the phase CT primary rating, the neutral or ground CT primary rating, and the CT inputs normal power flow setting of your system. For CT co...
Page 26 - Current Transformer Configuration; 2 = Power Circuit Breaker
Hardware Configuration 20 Siemens Energy & Automation, Inc. Figure 4.8 Current Transformer Configuration 52 52 1 2 3 52 52 1 2 3 1 2 3 1 2 3 1 2 3 G N Three Phase Current with Residual Ground Sensing Three Phase Current with Direct Neutral Sensing Three Phase Current with Zero Sequence CT Three ...
Page 27 - Protective Function Configuration
Protective Function Configuration Siemens Energy & Automation, Inc. 21 5 Protective Function Configuration 5.1 Overview This chapter explains how to set the parameters for the protective functions of the ISGS relay. Password All parameter changes require a password. Refer to Section 3.3 on how t...
Page 28 - Chapter 4
Protective Function Configuration 22 Siemens Energy & Automation, Inc. 5.3 High-Set Instantaneous Phase Overcurrent (50HS) The High-Set Instantaneous Phase Overcurrent function causes an undelayed trip when any individual measured phase current exceeds the preprogrammed threshold (pickup value)....
Page 29 - multiple of pickup values; multiple of
Protective Function Configuration Siemens Energy & Automation, Inc. 23 5.6 Phase Time Overcurrent (51) The Phase Time Overcurrent function uses a selected time overcurrent characteristic curve to determine the trip time for the applied phase currents. The defined characteristic curves are valid ...
Page 30 - Blocking Capability for Breaker or; ple of pickup values
Protective Function Configuration 24 Siemens Energy & Automation, Inc. protective curve that integrates with instantaneous reset. The lower limit of the custom curve is 1.10. The maximum time to trip is the time at 1.10. The range of the pickup value (1803) depends on the sec- ondary phase CT ra...
Page 31 - Directional Neutral or Ground Time
Protective Function Configuration Siemens Energy & Automation, Inc. 25 The Directional Phase Time Overcurrent function can be enabled or disabled (1901). The Curve parameter (1902) allows the selection of the pre- programmed characteristic curve used by this function. The ISGS relay comes with n...
Page 32 - Pickup
Protective Function Configuration 26 Siemens Energy & Automation, Inc. The range of the pickup value (2003) depends on the sec- ondary phase neutral CT rating (1 A or 5 A) and the value is in secondary amperes. The function begins timing when any individual neutral current exceeds the pickup cur...
Page 35 - Demand Setpoints
Protective Function Configuration Siemens Energy & Automation, Inc. 29 The 50BF Breaker Failure function can be enabled and dis- abled (2801). When enabled, the protective function begins monitoring the current flow in the circuit following a trip com- mand by the relay. Simultaneously, the prot...
Page 37 - Control & Communications; Matrixing Events to Outputs; Events
Control & Communications Siemens Energy & Automation, Inc. 31 6 Control & Communications 6.1 Matrixing Events to Outputs One of the powerful functions of the ISGS relay is its ability to send control outputs based on inputs from the real world. This process of assigning various outputs t...
Page 38 - Matrixing Procedure
Control & Communications 32 Siemens Energy & Automation, Inc. Matrixing Procedure The following steps provide a detailed description on how to matrix the ISGS relay manually using the front panel LCD and keypad. Before matrixing the relay, ensure that power is applied to the relay which is i...
Page 40 - Breaker Monitoring
Control & Communications 34 Siemens Energy & Automation, Inc. 6.4 Trip Contacts The ISGS relay offers up to three trip contacts which are monitored by the microprocessor. Trip contacts may be con- figured by the user to trip the relay based on any of a number of functions. Trip contact react...
Page 41 - Logs and Breaker Monitor Reset
Control & Communications Siemens Energy & Automation, Inc. 35 The Trip Source Impedance parameter (8301) can be enabled or disabled. When enabled, the circuit periodically monitors the trip supply voltage (auxiliary voltage, station bat- tery) and will perform an action (for example, close a...
Page 42 - Breaker Operations Count; Breaker Operations
Control & Communications 36 Siemens Energy & Automation, Inc. 6.8 Breaker Operations Count Breaker Operations refers to the number of times the device has opened the breaker. The Breaker Operation function allows the setting of the breaker monitoring parameters. The Sum of Interrupted Curren...
Page 43 - Voltage is present but unbalanced,
Control & Communications Siemens Energy & Automation, Inc. 37 Binary Outputs (7409) displays the output contact status as illustrated in Figure 6.3 . The status updates automatically as they change. Figure 6.3 Output Contact Status 6.10 Self-Monitoring (Value Supervision) Value supervision r...
Page 44 - Voltage Balance
Control & Communications 38 Siemens Energy & Automation, Inc. Figure 6.4 Voltage Balance Threshold Monitoring is done when the maximum voltage is larger than the voltage balance pickup value. The voltage is considered balanced and will not cause an alarm if the voltage min/max ratio is large...
Page 45 - Current Balance; Save
Control & Communications Siemens Energy & Automation, Inc. 39 Figure 6.6 Current Balance Threshold Failure of this check will cause an event Current Balance Error. This event can activate an output contact. The pickup value (3422) for the current balance check depends on the secondary phase ...
Page 46 - Enter
Control & Communications 40 Siemens Energy & Automation, Inc. and, therefore, apply to both sets. Examples are protective function enable settings and matrixed output contacts such as waveform buffers and blocking. All parameter set func- tions require a password. 6.11.1 Active Set The activ...
Page 47 - Communications Port; Date and Time Setting
Control & Communications Siemens Energy & Automation, Inc. 41 6.12 Communications Port The Configure Communications Port function lets the user change the communications parameters for the ISGS relay. The ISGS relay can connect at 2400, 4800, 9600, and 19,200 baud at both ports (7201 and 720...
Page 49 - Data Acquisition; Chapter 8
Data Acquisition Siemens Energy & Automation, Inc. 43 7 Data Acquisition The ISGS relay provides several forms of data acquisition and display to give the user the most comprehensive picture of the power system. This data includes: event log for monitoring functions and status changes trip lo...
Page 55 - ISGS Wisdom Software; Wisdom Software
8 ISGS Wisdom Software Siemens Energy & Automation, Inc. 49 8 ISGS Wisdom Software 8.1 Overview The ISGS relay is an extremely advanced protective relay for medium voltage switchgear applications. In order to reduce the complexity of configuring the relay, reading the metered values, and retriev...
Page 56 - Configure Menu
8 ISGS Wisdom Software 50 Siemens Energy & Automation, Inc. Configure Menu The Configure menu provides an easy way to set the param- eters for the following areas: Communications Protection Functions Breaker Monitoring ISGS Hardware Demand Alarms Value Supervision I/O Setup Pas...
Page 57 - Logs Menu
8 ISGS Wisdom Software Siemens Energy & Automation, Inc. 51 The Marshalling display provides an overview of all trip and binary input settings. Refer to Figure 8.6 . Figure 8.6 Marshalling Display Logs Menu The Logs menu allows a complete data display of the Trip Logs and the Min/Max Log at one ...
Page 59 - A.1 Instantaneous Curve
Appendix A: Trip Curves & Equations Siemens Energy & Automation, Inc. 53 Equation A.1 Standard Inverse Curves Equation Figure A.2 Inverse Curve (SEA1) Trip Characteristic Reset Characteristic T = time to trip, in seconds = multiple of pickup setting D = time dial setting, 0.1 to 9.9 in steps...
Page 61 - A.3 Definite Inverse Equation; Trip Characteristic
Appendix A: Trip Curves & Equations Siemens Energy & Automation, Inc. 55 Figure A.7 Extremely Inverse Curve (SEA6) Figure A.8 Slightly Inverse Curve (SEA7) 0.01 0.1 1 10 100 1000 1 10 50 9.9 7.0 5.0 3.0 1.5 0.5 0.1 Multiples of Pickup T ime to T rip (Seconds) T ime Dial 0.01 0.1 1 10 100 1 1...
Page 62 - For; A.5 Custom Protective Curve
Appendix A: Trip Curves & Equations 56 Siemens Energy & Automation, Inc. Figure A.9 Definite Inverse Curve (SEA8) A.4 I-Squared-T Curve The ISGS provides an I-Squared-T characteristic in addition to the standard inverse curves. Equation A.4 I-Squared-T Equation 0.01 0.1 1 10 100 1 10 50 9.9 ...
Page 63 - Moderately Inverse Overvoltage Curve
Appendix A: Trip Curves & Equations Siemens Energy & Automation, Inc. 57 Table A.2 Under/Overvoltage Coefficients Equation A.5 Overvoltage Equation Equation A.6 Undervoltage Equation Over/Undervoltage Coefficients Curve Type Des. A 1 B 1 N 1 t r Inverse 0.51 -1.75 0.50 --- Mod. Inverse 0.51 ...
Page 64 - Appendix B: Metering; B Metering; Metering Accuracies
Appendix B: Metering 58 Siemens Energy & Automation, Inc. B Metering B.1 Accuracy Table B.1 Metering Accuracies Parameter Range Accuracy rms Current (L & G) 0-250% I n Displayed in Amperes ±1% of measurement from 50-125% of I n ±0.5% of I n from 10- 50% of I n Average rms Current 0-250% I n ...
Page 65 - B.2 Power Conventions; Complex Power Plane; Phase Angle Ø
Appendix B: Metering Siemens Energy & Automation, Inc. 59 B.2 Power Conventions Figure B.1 Complex Power Plane Phase Angle Ø Ø=0°, +kW,kWh Imported,Power Factor = 1 Ø=180°, -kW,kWh Exported,Power Factor = 1 Ø=270°, -kVAR, kVARh Exported, Power Factor = 0 Ø=90°, +kVAR, kVARh Imported, Power Facto...
Page 66 - Appendix C: Menu Structure; C Menu Structure; The following table provides a complete list of addresses and
Appendix C: Menu Structure 60 Siemens Energy & Automation, Inc. C Menu Structure The following table provides a complete list of addresses and parameters available to the ISGS in its standard and optional configuration. Functions that set the device, the CTs, or the VTs, or func- tions that requ...
Page 69 - Appendix D: Acceptance Test Procedures; D Acceptance Test Procedures
Appendix D: Acceptance Test Procedures Siemens Energy & Automation, Inc. 63 D Acceptance Test Procedures When performing the acceptance tests, follow the sequence listed here; first test protective function 51, then 50, etc.) Note: The following procedures should be performed using accurately ca...
Page 70 - Phase; ISGS Acceptance Test
Appendix D: Acceptance Test Procedures 64 Siemens Energy & Automation, Inc. Phase A B C 6. Relay times out per Table D.1 . Trip LED illuminates. Timer stops as Trip 1 contacts close. Trip log indicates trip current value and time in pickup. Wisdom software records trip on overcurrent. Return cur...
Page 71 - Set the ISGS as follows:
Appendix D: Acceptance Test Procedures Siemens Energy & Automation, Inc. 65 ISGS Acceptance Test Neutral Time Overcurrent (51N) Function Set the ISGS as follows: Parameter Set A 7103 5000:5 Current Transformer (CT) 1102 Curve SEA 5, Very Inverse 1802 1 A Nominal Pickup 1803 Time Dial per Chart 1...
Page 73 - Instantaneous Phase Overcurrent (50) Function; Test Specifications
Appendix D: Acceptance Test Procedures Siemens Energy & Automation, Inc. 67 ISGS Acceptance Test Instantaneous Phase Overcurrent (50) Function Set the ISGS as follows: Parameter Set A 7103 5000:5 Current Transformer (CT) 1102 Curve SEA 5, Very Inverse 1702 20 A Nominal Pickup 1703 Time Dial 9.9 ...
Page 78 - Directional Phase Time Overcurrent (67) Function
Appendix D: Acceptance Test Procedures 72 Siemens Energy & Automation, Inc. ISGS Acceptance Test Directional Phase Time Overcurrent (67) Function (Phase-Neutral Connected VTs) Set the ISGS as follows: Parameter Set A 7103 5000:5 Current Transformer (CT) 1101 Curve SEA 5, Very Inverse 1902 1 A No...
Page 82 - Directional Neutral Time Overcurrent (67N)
Appendix D: Acceptance Test Procedures 76 Siemens Energy & Automation, Inc. ISGS Acceptance Test Directional Neutral Time Overcurrent (67N) Function (Only Available with Phase-Neutral Connected VTs) Set the ISGS as follows: Parameter Set A 7103 5000:5 Current Transformer (CT) 1102 Curve SEA 5, V...
Page 83 - Timing
Appendix D: Acceptance Test Procedures Siemens Energy & Automation, Inc. 77 PhaseN -increase phase A current in the reverse direction until relay picks up. This should occur at 1.06 x pickup, for example, 1.06 A ∠ 180 to phase A, 1.06 A ∠ 60 to phase B, 1.06 A ∠ 300 to phase C. Pickup LED illumi...
Page 84 - Terminal Connections for Test Procedures; Test Equipment
Appendix D: Acceptance Test Procedures 78 Siemens Energy & Automation, Inc. Figure D.1 Terminal Connections for Test Procedures I A V A V B V C I N I B I C Trip 1 CT 1-1 CT 2-1 CT 3-1 CT N-1 CT 1-2 CT 2-2 CT 3-2 CT N-2 VT 1+ VT 2+ VT 3+ VT 1- VT 2- VT 3- Trip 2 Trip 3 Trip Common BinaryInput 3 B...
Page 85 - Appendix E: Schematics; E Schematics; The following diagram illustrates a typical connection; DC
Appendix E: Schematics Siemens Energy & Automation, Inc. 79 E Schematics E.1 DC Trip System The following diagram illustrates a typical connection scheme for the ISGS relay when using a DC trip system. Figure E.1 Wiring for DC Trip Systems 52 SRC LS 88 52T 52a 52a 52b 31 3 1 6 1 4 15 2 1 4 N P 3...
Page 86 - AC
Appendix E: Schematics 80 Siemens Energy & Automation, Inc. E.2 AC (Capacitor) Trip Systems The following diagram illustrates a typical connection scheme for the ISGS relay when using an AC trip system. Figure E.2 Wiring for AC (Capacitor) Trip System 52 SRC LS 88 52T 52a 52a 52b 52a 31 3 1 6 1 ...
Page 95 - Disabled
ISGS Settings Worksheet for Date: Set A Siemens Energy & Automation, Inc. S-9 3400 Value Supervision 3401 Voltage Balance Function Enabled Disabled 3402 Voltage Balance Pickup 100 V Range: 40-120 V (0.1 V steps) V 3404 Voltage Balance Factor 0.80 Range: 0.58-0.95 (0.01 teps) 3411 Current Sum Fun...
Page 96 - BI1 Hi
ISGS Settings Worksheet for Date: Set A S-10 Siemens Energy & Automation, Inc. 6000 Matrixing 6100 Binary Inputs 6101 Input 1 001 002 003 004 005 006 007 008 009 010 Frz.Buff1 Hi Frz.Buff1 Lo Frz.Buff2 Hi Frz.Buff2 Lo blk 47N Hi blk 47N Lo blk 47 Hi blk 47 Lo blk 81U Hi blk 81U Lo blk 81O Hi blk...
Page 98 - not matrixed
ISGS Settings Worksheet for Date: Set A S-12 Siemens Energy & Automation, Inc. 6200 Binary Outputs 6201 Output 1 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 BI1 BI2 BI3 BI4 Error Sum I Error Sym I Error Sym V OC Pickup OC Trip Non OC PU Non OC Trip Relay Picku...
Page 100 - CommEvent 1
ISGS Settings Worksheet for Date: Set A S-14 Siemens Energy & Automation, Inc. 6400 Trip Contacts 6401 Contact 1 001002003004005006007008009010011012013014015016017018019020 BI1 BI2 BI3 BI4 OC Trip Non OC Trip Relay Tripped 50HS Trip 50HSN Trip 81O Trip 81U Trip 47N Trip (005) 50 Trip (002) 50N ...
Page 102 - Set A
ISGS Settings Worksheet for Date: Set A S-16 Siemens Energy & Automation, Inc. 7100 Parameter Set 7103 Activation Set A Set B 7200 Configure Communicatins Port 7201 Local Port 2400 baud 4800 baud 9600 baud 19 200 baud 7202 System Port 2400 baud 4800 baud 9600 baud 19 200 baud 7203 Param. Change ...
Page 103 - Enabled
ISGS Settings Worksheet for Date: Set A Siemens Energy & Automation, Inc. S-17 8200 Resets 8211 Breaker Ops 0-65535 8212 Sum IL1 Range: 0-99999 kA (0.01 kA steps) kA 8213 Sum IL2 Range: 0-99999 kA (0.01 kA steps) kA 8214 Sum IL3 Range: 0-99999 kA (0.01 kA steps) kA 8300 Breaker Monitoring 8301 T...
Page 109 - Glossary
Glossary Siemens Energy & Automation, Inc. G-i address Unique four-digit number representing the location of a specific function parameter stored in the ISGS relay. address block Unique four-digit number ending in two zeros representing the location of a specific function stored in the ISGS rela...
Page 112 - value supervision
Glossary G-iv Siemens Energy & Automation, Inc. trip to occur. If the underfrequency condition subsides in less time than the delay time, the pickup will go inactive and the underfrequency function will reset. When tripping occurs, the actual condition that caused the trip is recorded in the dev...
Page 113 - Index
Index Siemens Energy & Automation, Inc. I- i A AC (capacitor) trip systems 80 acceptance test procedures 63 active parameter set 40 alarm setpoints 29 , 30 applicable standards 4 ary 36 B binary input status 36 binary inputs 31 , 33 binary outputs 33 blocking 24 , 31 Breaker Failure (50BF) 2 , 2...
Page 114 - II
Index I- ii Siemens Energy & Automation, Inc. Instantaneous Phase Overcurrent (50) 2 , 21 Intelligent SwitchGear System (ISGS) 1 internal connections 6 , 7 inverse curve 53 isolation 4 I-Squared-T curve 56 J jumper positions 16 K keypad 9 L LCD 10 LEDs 9 log reset 35 logs current minimum/maximum...
Page 117 - Protective Relays Service Request Form; Siemens Energy; emergency service
Form: SG6014-00 0496 Siemens Energy & Automation, Inc. Protective Relays Service Request Form Siemens Energy & Automation, Inc. Protective Relay Group Customer Service P.O. Box 29503 Raleigh, NC 27626-0503 To report problems with Siemens protective relays, make a copy of this form, complete ...
Page 119 - Wisdom software (for Windows
FAX ORDER FORM Wisdom Software Wisdom software (for Windows ® ) simplifies the configuration of your ISGS relay. For a free copy, complete this form and fax it to: Siemens Energy & Automation, Inc.Protective Relay Group FAX in US: 919-365-2552 To download this software directly from the World W...
Page 121 - SIEMENS is a registered trademark of Siemens AG.
Siemens Energy & Automation, Inc. Power Apparatus & Conditioning Division P.O. Box 29503 Raleigh, NC 27626-0503 Manual No. SG8158-00 1MTD 0896 Printed in U.S.A. © 1996 Siemens Energy & Automation, Inc. SIEMENS is a registered trademark of Siemens AG. isv3o_1.bk : isv3o_fc.frm Page 4 Wedn...
