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TM
ISGS
Intelligent SwitchGear System
Operators Manualfirmware version V3
Manual No. SG8158-00
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isv3o_1.bk : isv3o_fc.frm Page 2 Wednesday, August 7, 1996 10:51 AM IMPORTANT The information contained herein is general in nature and not intended for specific application purposes. It does not relieve the user of responsibility to use sound practices in application, installation, operation, and maintenance of the equipment purchased. Siemens reserves the right to make changes at any time without notice or obligations. Should a conflict arise between the general information contained in thi
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isv3o_1.bk : isv30toc.frm Page 1 Wednesday, August 7, 1996 10:51 AM 1 Introduction 2 Installation Table 3 User Interface 4 Hardware Configuration of 5 Protective Function Configuration Contents Control & Communications 6 Data Acquisition 7 8 ISGS Wisdom Software Trip Curves & Equations A Metering B Menu Structure C Acceptance Test Procedures D E Schematics S Settings Worksheet G Glossary I Index Siemens Energy & Automation, Inc.
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isv3o_1.bk : isv30toc.frm Page 2 Wednesday, August 7, 1996 10:51 AM
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isv3o_1.bk : isv3o_1.toc Page i Wednesday, August 7, 1996 10:51 AM Table of Contents 1 Introduction ...............................................1 5 Protective Function Configuration (cont.) 5.6 Phase Time Overcurrent (51)...........................23 1.1 About this Manual.............................................1 5.7 Neutral Time Overcurrent (51N) ......................23 1.2 Safety................................................................1 5.8 Blocking Capability for Breaker or
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isv3o_1.bk : isv3o_1.toc Page ii Wednesday, August 7, 1996 10:51 AM Table of Contents 7 Data Acquisition (cont.) B Metering .................................................. 58 7.4 Metered Data ..................................................46 B.1 Accuracy ..........................................................58 7.4.1 Current Values .....................................46 B.2 Power Conventions..........................................59 7.4.2 Voltage Values ...........................
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isv3o_1.bk : isv3oint.frm Page 1 Wednesday, August 7, 1996 10:51 AM Introduction 1 1 1.2 Safety 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 designed and manufactured in accordance with the latest provisions of the applicable IEEE, ANSI, and NEMA stan- dards. You must thoroughly read and understand th
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isv3o_1.bk : isv3oint.frm Page 2 Wednesday, August 7, 1996 10:51 AM Introduction 1 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 ISGS which, if not avoided, will result in death or serious injury Warning - indicates a potentially hazardous situation System which, if not avoided, could result in dea
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isv3o_1.bk : isv3oint.frm Page 3 Wednesday, August 7, 1996 10:51 AM Introduction 1 Additional Protective Functions 1.3.2 Optional Configurations For an ISGS relay with the metering option installed, the fol- The ISGS relay is a dynamic, feature-rich device that can be lowing additional protective functions offer a powerful exten- used in numerous industrial and utility applications. It allows sion of its protection capabilities: the addition of options or configuration changes at any time wi
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isv3o_1.bk : isv3oint.frm Page 4 Wednesday, August 7, 1996 10:51 AM Introduction 1 1.5 Technical Specifications Trip Circuit (continued) Binary output contacts 2 x N.O. (independent, (BO1 and BO2) not rated for tripping) Applicable Standards Maximum switching voltage 300 VDC, 250 VAC ANSI / IEEE C37.90-1989 IEEE Standard Relays and Relay Maximum switching current 8 A Systems Associated With Elec- Maximum switching capac- DC: voltage dependent; tric Power Apparatus ity (for currents not in
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isv3o_1.bk : isv3oins.frm Page 5 Wednesday, August 7, 1996 10:51 AM Installation 2.3 Mounting 2 Installation 2 The ISGS relay is typically installed in a switchgear unit or This chapter explains the installation of the ISGS relay and relay panel. The required panel opening and a side view of includes procedures for unpacking, storing, mounting, and the relay are shown in Figure 2.2. wiring the relay. Prior to installation, ensure that the system power is off and that you have all required too
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isv3o_1.bk : isv3oins.frm Page 6 Wednesday, August 7, 1996 10:51 AM Installation Mount the relay using the following steps. IMPORTANT: Any unused terminals must remain discon- 2 1. Install the relay M1-type case in the panel opening on nected. They are for factory use only. 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 described in Section 2.4. Top 19 17 15 13 11 Use toothed washers to ensure solid
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isv3o_1.bk : isv3oins.frm Page 7 Wednesday, August 7, 1996 10:51 AM Installation 2 ISGS 2 Trip 1 CT 1-1 3 Trip 1 Trip Common Relays CT 1-2 4 11 Trip 2 5 CT 2-1 29 Trip 3 6 CT 2-2 30 CT 3-1 7 Current Input 8 19 Relay Disabled 1 CT 3-2 Relay Disabled Alarm Contact 20 Relay Disabled 2 CT N-1 9 CT N-2 10 31 BO 1 VT 1+ 41 Binary 32 42 Outputs VT 1- 33 BO 2 43 34 VT 2+ Voltage Input 44 VT 2- VT 3+ 45 46 VT 3- BI B Switch 14 BI Trip 15 Breaker and Trip Source Monitor Impedance Source 17 Impedance Se
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isv3o_1.bk : isv3oins.frm Page 8 Wednesday, August 7, 1996 10:51 AM Installation 2.5 Communications 2.6 Cradle Assembly 2 The ISGS relay must be connected to a host computer in Some of the setup and maintenance procedures in this man- order for it to communicate with other devices. The relay ual require removal of the relay cradle assembly from the supports both RS-232 and RS-485 (optional) data inter- drawout case. Use the following instructions for the proper faces. The use of either of th
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isv3o_1.bk : isv3ousr.frm Page 9 Wednesday, August 7, 1996 10:51 AM User Interface . 3 User Interface Key Name Function Operation, parameter selection, and control of the ISGS relay Password Accesses the password function, are performed using the front panel controls and indicators. which is required for programming They consist of a 26-key membrane keypad, a 2-line by relay settings. 16-character liquid crystal display (LCD), three light-emitting Direct Addr Allows direct entry of addresse
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isv3o_1.bk : isv3ousr.frm Page 10 Wednesday, August 7, 1996 10:51 AM User Interface The Trip LED is illuminated until the Target Reset key is Level 3 includes additional access to all matrixing, the depressed. Reset the Trip LED by momentarily depressing changing of which can cause a device reset. the Target Reset key. Password configuration is described in Section 9.4. Note: If the Trip LED is on and power is removed, it will still be set to on when power is restored. To access any passwor
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isv3o_1.bk : isv3ousr.frm Page 11 Wednesday, August 7, 1996 10:51 AM User Interface The LCD identifies functions that include parameters config- 3.4 Menu urable for A and B settings by preceding the functions The ISGS relay menu (or memory map) is organized in a hier- address block number with the letter A or the letter B, archical structure that is made up of address blocks and depending on which parameter set is currently displayed. addresses. The first level consists of address blocks. Ea
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isv3o_1.bk : isv3ousr.frm Page 12 Wednesday, August 7, 1996 10:51 AM User Interface 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 displayed by following steps 1 to 3 of the stan- dard operating procedures described in Table 3.1. Viewing 3 passwords requires the entry of an appropriate level user pa
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isv3o_1.bk : isv3ousr.frm Page 13 Wednesday, August 7, 1996 10:51 AM User Interface Table 3.1 Standard Operating Procedures Step Task Description Display Data 3 1 Display data at Use Double Arrow keys to scroll forward or backward between address blocks. Address Block OR (xx00) Press Direct Addr key; enter address of desired address block using the numeric keypad; press Enter key. To view passwords, carry out step 4 before continuing with the next step. 2 Display data at Use Single Arrow ke
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isv3o_1.bk : isv3ousr.frm Page 14 Wednesday, August 7, 1996 10:51 AM Notes: 3 14 Siemens Energy & Automation, Inc.
