TÀI LIỆU DÙNG CHO NGƯỜI KỸ THUẬT, CÓ THỂ DÙNG ĐÀO TẠO HOẶC NGHIÊN CỨU THÊM TRONG LÃNG VỰC ĐIỆN HỆ THỐNG TRONG NHÀ MÁY ĐIỆN CŨNG NHƯ DÙNG THAM KHẢO KHI THAM GIA KHÓA HỌC NÂNG CAO, NÓ GIÚP CHO NGƯỜI HỌC HIỂU RÕ HƠN VỀ HỆ THỐNG LCI
GEH-6125A (Supersedes GEH-6125) g GE Industrial Systems Innovation Series AC Drives Load Commutated Inverter Installation and Startup for Static Starter Applications g GE Industrial Systems Document: GEH-6125A Original issue date: 1998-05-29 Rev A: 2000-05-29 Innovation Series AC Drives Load Commutated Inverter Installation and Startup for Static Starter Applications © 1999, 2000 General Electric Company, USA All rights reserved Printed in the United States of America These instructions not purport to cover all details or variations in equipment, nor to provide every possible contingency to be met during installation, operation, and maintenance If further information is desired or if particular problems arise that are not covered sufficiently for the purchaser’s purpose, the matter should be referred to GE Industrial Systems, Salem, Virginia, USA This document contains proprietary information of General Electric Company, USA and is furnished to its customer solely to assist that customer in the installation, testing, operation, and/or maintenance of the equipment described This document shall not be reproduced in whole or in part nor shall its contents be disclosed to any third party without the written approval of GE Industrial Systems Document Identification: GEH-6125, Revision A Technical Writer/Editor: Teresa Davidson Technical Responsibility: R.L Covington, C Lau Field ControlTM, GeniusTM, LogicMaster TM, and Series 90TM are trademarks of GE Fanuc Automation North America, Inc Fluke® is a registered trademark of Fluke Corporation InnovationTM is a trademark of General Electric Company National Electrical Code® and NEC® are registered trademarks of the National Fire Protection Association Windows® is a registered trademark of Microsoft Corporation Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH-6125A Safety Symbol Legend Indicates a procedure, practice, condition, or statement that, if not strictly observed, could result in personal injury or death Indicates a procedure, practice, condition, or statement that, if not strictly observed, could result in damage to or destruction of equipment Note Indicates an essential or important procedure, practice, condition, or statement Safety Symbol Legend • a GEH-6125A Innovation Series AC Drives This equipment contains a potential hazard of electric shock or burn Only personnel who are adequately trained and thoroughly familiar with the equipment and the instructions should install, operate, or maintain this equipment Isolation of test equipment from the equipment under test presents potential electrical hazards If the test equipment cannot be grounded to the equipment under test, the test equipment’s case must be shielded to prevent contact by personnel To minimize hazard of electrical shock or burn, approved grounding practices and procedures must be strictly followed To prevent personal injury or equipment damage caused by equipment malfunction, only adequately trained personnel should modify any programmable machine Note GE designs equipment and selects components for reliability However, component and equipment failures can still occur Electrical and environmental conditions beyond the scope of the original design can be contributing factors Since failure modes cannot always be predicted or may depend on the application and the environment, best practices should be followed when dealing with I/O that is critical to process operation or personnel safety Make sure that potential I/O failures are considered and that appropriate lockouts or permissives are incorporated into the application This is especially true for processes that require human interaction b • Safety Symbol Legend Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH-6125A Table of Contents Section Heading Page Section 1, How to Use This Manual 1-1 Structure 1-2 Conventions Used 1-3 How to Get Help Section 2, Handling and Mounting Guidelines 2-1 Drive Handling Procedures 2-1.1 Lifting .3 2-1.2 Moving 2-1.3 Unpacking .5 2-2 Mounting Section 3, Cabling and Connections 3-1 Power Requirements 3-1.1 Control Power 3-2 Drive Connections 3-2.1 Line Protection 3-2.2 Terminal Board I/O 3-3 Cabling Guidelines 10 3-3.1 Preventing Cable Damage 10 3-3.2 Installing Power Cable 10 3-3.3 Installing Signal and Communications Cable 11 Section 4, Pre-Startup Installation Checks 4-1 Equipment/Material Needed 13 4-2 Connections and Wiring 13 4-3 Power Checks 14 4-3.1 Initial Checks and Setup 14 4-3.2 Meggar Test 15 4-3.3 Auxiliary Power Checkout 15 4-4 Series 90-30 PLC and Field Control I/O Checks 17 4-5 Local (AFE Datapanel) Display Checks 18 Section Initial Drive Setup and Operation Checks 5-1 Equipment/Material Needed 19 5-2 Cooling System Setup 20 5-2.1 Check Pump/Blower Rotation 20 5-2.2 Flush and Clean the Cooling System 20 5-2.3 Fill the System with Coolant 20 5-3 Control Rack Initialization 22 5-3.1 Upload Firmware 22 5-3.2 Download EE Variables for Update 22 5-3.3 Upload Modified EE Variables to DSPC 22 5-4 Set Hardware Suppression Pot 23 5-5 Bridge Check and Setup 23 5-5.1 Current Feedback Burden Resistor Value 23 Section Heading Page 5-5.2 5-5.3 5-5.4 5-5.5 Shorted SCRs 23 SCR Gate Test 23 Current Feedback Offset 28 Null DC Offset at Reconstructed Flux Testpoints 28 5-5.6 Source No Load Full Voltage Checkout 29 5-5.7 Load Control Check 31 5-6 External Exciter (EX2000) Interface Checks 32 5-7 Crowbar Test 32 5-8 Phase Sequence Test 33 5-9 Hardware Segment/Keyphase Setup 34 5-10 Checks with the Machine Running 34 5-10.1 Initial Checks and Setup 34 5-10.2 Start and Run the Machine 35 5-10.3 Load Flux Feedback Check 36 5-10.4 Datapanel Display Readings 36 Appendix A, Understanding Equipment Drawings A-1 Introduction 37 A-2 Equipment Catalog Number 37 A-3 Equipment Nameplate 38 A-4 Basic Drawing Numbers 38 A-5 Outline Drawings 38 A-6 Terminal Board Drawings 38 A-7 Elementary Diagrams 39 A-7.1 Equipment Reference Information 39 A-7.2 Elementary Drawing Number 39 A-7.3 Wire Number Identification 39 A-8 Conventions Used With Other Equipment 39 A-8.1 Genius or Field Control I/O Elements 39 A-8.2 AC Motor Control Centers 39 Appendix B, Installing Fiber-Optic Cable C-1 Cable Characteristics 41 C-1.1 Cable Construction 41 C-1.2 Data Integrity 41 C-1.3 Causes of Cable Damage .42 C-2 Handling Guidelines 42 C-3 Environmental Guidelines 42 C-4 Cable Assembly 43 C-4-1 Tools and Materials .43 C-4-2 Attaching a Connector 43 C-4.3 Polishing Fiber Ends 44 C-5 Inspecting Fiber Ends .45 C-6 Connecting Fiber-Optic Cable to Modules .47 Contents • i GEH-6125A Innovation Series AC Drives Table of Contents — Continued Section Heading C-1 C-2 C-3 C-4 C-5 C-6 Page Introduction 49 Low-Level Signals (Level L) 49 Medium-Level Signals (Level M) 49 High-Level Signals (Level H) 49 Power-Level 50 Class Codes 50 Section Heading Page C-7 Cableway Spacing Guidelines 50 C-7.1 General Cableway Spacing 50 C-7.2 Tray/Tray Spacing 51 C-7.3 Tray/Conduit Spacing 51 C-7.4 Conduit/Conduit Spacing 51 List of Figures Figure Title Page 1-1 Order of Installation/Startup 2-1 Sample of Outline Drawing for Typical LCI Lineup .4 3-1 Location of Terminal Connectors on DDTB Board 4-1 FCSA Board Layout .16 5-1 Typical Liquid Cooling System Layout 21 5-2 Location of Overcurrent Pot and Testpoint on FCGD Board 23 5-3 Sample Monitor Screen, Changing EE Variables 24 5-4 Sample Monitor Screen, Checking Gating Signal Path and Current 24 5-5 Location of Resistors R101 and R102 on FGPA Board 25 5-6 Oscilloscope Reading for Gate Current Check 26 Figure Title Page 5-7 Sample Monitor Screen, Modifying Variable and Disabling Factory Test 27 5-8 View of FCGD Board at Front of Control Rack 28 5-9 Oscilloscope Reading for Crowbar Test Current Check 33 A-1 Sample Panel/Case Catalog Number 37 A-2 Typical Drive Nameplate 38 A-3 Sample Drawing Number 38 A-4 Sample Sheet Number, Drive System Elementary Diagram .39 A-5 Sample Wire Number .39 B-1 Fiber-Optic Cable with End Stripped for Insertion into Connector 41 B-2 Inserting Fiber-Optic Cable into Connector .41 B-3 Fiber-Optic Cable with Connector Attached 42 B-4 Polishing Fiber-Optic Cable .42 List of Tables Table Title 3-1 3-2 3-3 3-4 3-5 3-6 5-1 Page TB1 Connections, Analog I/O and Shields TB2 Connections, Analog I/O and Shields TB3 Connections, High Voltage Input TB4 Connections, High Voltage Input TB5 Connections, Relay Outputs TBPL Pin Assignments 10 Variables for Checking SCR Gating Paths 25 ii • Contents Table Title Page 5-2 Chart Recorder Connections for Both Uncoupled and Coupled Motor Tests 35 B-1 Procedures for Inspecting Fiber-Optic Cable Ends 45 C-1 Spacing Between Trays 51 C-2 Spacing Between Trays 51 C-3 Spacing Between Trays 51 Load Commutated Inverter, Installation and Startup for Static Starter Applications How to Use This Document This document contains installation and startup instructions for static starter applications of the Innovation Series load commutated inverter (LCI) It is written for a technician who is experienced with the physical and electrical requirements of installing such equipment Additionally, the user should understand the theory of drive operation and how to use the LCI’s software configuration tools 1-1 Structure This document is structured as sections of related information, presented in the order that it should be followed (see Figure 1-1) Appendices provide reference information For an exact outline of the document’s organization, refer to the Table of Contents GE recommends that a detailed installation log be maintained for each drive as these installation and startup steps are completed Startup Installation Start Installation site ready; drawings & documents onhand Move LCI to installation site & mount it Section Connect cable & I/O Section Verify correct functioning of connected devices (power, I/O) Section Prepare LCI for operation & verify running condition Section Stop GEH-6125A 1-2 Conventions Used In this document, numbers are used to indicate sequence of instructions: Arabic numerals precede steps to be followed in order; alphabetic characters indicate the order of substeps An empty checkbox (ă ă) is used when the sequence of items or instructions does not matter When describing software functions: This typeface is used to differentiate screen text from instructional text, and to distinguish words or characters typed at a screen prompt This typeface is used to indicate a key (for example, Tab) 1-3 How to Get Help If help is needed beyond the instructions provided in the LCI system documentation, contact GE as follows: GE Industrial Systems Product Service Engineering, Rm 191 1501 Roanoke Blvd Salem, VA 24153-6492 USA Phone: + 800 533 5885 (US, Canada, Mexico) + 540 378 3280 (International) Fax: + 540 387 8606 (All) “+” indicates the international access code required when calling from outside of the USA LCI ready for commissioning Figure 1-1 Order of Installation/Startup Section 1, How to Use This Document • GEH-6125A Innovation Series AC Drives Notes: • Section 1, How to Use This Document GEH-6125A Innovation Series AC Drives B-1.3 Causes of Cable Damage For installations, the major cause of cable damage and failure is excessive long-term static stress to the fiber, not dynamic stress (flexing) Static stress is caused by either of two factors: • Tension force (pull force) • Bending that causes a radial distortion When both factors exist at the same time, total stress equals the sum of both factors Proper handling and storage (see sections B-2 and B-3) can prevent this damage B-2 Handling Guidelines To prevent damage to fiber-optic cable during installation and assembly: • Do not exceed the cable’s maximum pull force (tension): 600 Newtons (135 lbs) force, or the cable manufacturer’s specifications, whichever is less • Always observe the cable’s minimum bend radius: not pull cable around a bend with a radius less than 20 times the cable diameter (see Figure B-2) Sheaves and cable guides are recommended at bends to help ensure minimum bend radius Fiber-Optic Cable Radius Radius = 20 x Cable Diameter Figure B-2 Cable Bend Guidelines 42 • Appendix C, Installing Fiber-Optic Cable • Install the cable grip directly over the cable end (no cable preparation is required) • If pulling cable by hand, not use gloves Monitor the pull force with a gage device • Junction breakout boxes are not recommended • When attaching connectors to cable, make sure the cable is cut and polished correctly (see section B4) • Fiber-optic cable cannot accept multiple taps (it is point-to-point) • There must be no ties or support within inches of the cable’s termination point • Pull wire ties snug by hand Do not use tie guns, which can deform fiber-optic cable • Do not place a wire label closer than inches from the termination point (see Figure B-6) • To prevent cable from twisting or curling when laying it aside temporarily, lay it in a figure-8 pattern • Store cable at as large a diameter as possible to reduce bending stress and add to cable life With a in (100 mm) diameter coil, the cable should last beyond 100 years B-3 Environmental Guidelines When selecting cable, the installer must ensure that the cable meets both GE specifications (see Sections 7, 8, and 9) and the manufacturer’s environmental requirements, using the following considerations: • Select cable made for the conditions that it will be exposed to (such as moisture, sun, and temperature extremes) • Select sturdy cable that is the most resistant to damage caused by harsh environments (such as exposure to caustic or acidic fumes from certain industrial processes) • If installation must be underground, use conduit or armored cable to prevent damage by burrowing animals Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH-6125A B-4 Cable Assembly B-4.2 Attaching a Connector To preserve the cable’s optical characteristics at the point of termination, the cable must be correctly attached to the connector and the fiber end polished Sections B-4.1 through B-4.3 provide guidelines Cut cable to desired length with Nickerson model NM-S-4 plastic cutters For duplex cable, separate the fibers and unzip the cable about – inches Dull blades may damage the fiber ends when cutting the cable Make sure that cutter blades are sharp and even before using them Note The examples show both simplex and duplex cables with HPC#HFBR-4531 crimpless nonlatching connectors However, these practices should apply in general to all recommended plastic fiber-optic cables and connectors Type HPC#HFBR-4531 connectors (see Figure B-4) are used with both simplex and duplex cables Using the no 18 AWG slot of the wire strippers, remove mm (about 3/16 in.) of cable jacket from the cable end, as shown in Figure B-3 Be careful not to scrape or nick the clear plastic fiber while stripping off the cable jacket, inserting the exposed fiber into the connector, or crimping the connection Such damage could prevent accurate transmission of data over the cable B-4.1 Tools and Materials The following tools and materials are recommended for terminating the fiber-optic cables Note Other models can be used if the quality and capability are equivalent to those recommended For cutting/stripping cable: o Wire strippers, IDEAL Stripmaster® type 45-671 – use no 18 AWG slot 3/16 in (4 mm) typical Simplex Cable Duplex Cable o Plastic cutters, Nickerson model NM-S-4 o 1/32 in trimming fixture For polishing cable ends: o Polishing kit for fiber-optic cable, HP® part no HPC#HFBR-4593 o 2000 grit sandpaper, 3M™ brand o 600 grit sandpaper, 3M™ brand o micron lapping film, Moyco Ultralap® part no LPA-030 (pink) For inpsection: o Dust caps for fiber-optic cable (Grainger WWG#5AD39); if not available, use lint-free clean cloths or chamois "Unzipped" - in Figure B-3 Fiber-Optic Cable with End Stripped for Insertion into Connector Seat the connector onto the cable, inserting the cable through the tube end, with about 1.5 mm (1/16 in.) of fiber extending from the tube (see examples in Figures B-4 and B-5) Note Simplex cables require one connector Duplex cables require two connectors (one for each cable strand), which are assembled as a top and bottom that face each other o Alcohol wipes (Grainger WWG#5AD39); if not available, use lint-free clean cloths or chamois o Optical magnifier Appendix B, Installing Fiber-Optic Cable • 43 GEH-6125A Innovation Series AC Drives Top View To fasten the two connectors onto the duplex cable: Groove (Located On Underside) a Align the edges of the facing connectors Make sure that both cable strands remain properly seated (per step 3) Hole 3/16 in Tube b Using your fingers, press and snap the two connectors together in the following sequence: center, right end, left end Cable "Unzipped" - in Inspect the connector to make sure that no air gaps between the top and bottom halves If air gaps are found, snap them together again, then re-inspect Figure B-4 Duplex Cable Being Inserted Into Type HFBR-4531 Non-Latching Connector Fiber Extending From Connector (Before Polishing) Place the correct label onto the cable jacket at least in from the termination point (see Figure B-6) Top View Trim the ends of the fiber, leaving 75 mm (1/32 in.) of fiber still extending from the connector If available, use the polishing fixture to this Tube On Bottom Note: Connector Has Been Folded Around Cable and Snapped Together) Then polish the end using the instructions in section B-4.3 Simplex Cable Figure B-5 Simplex Cable With Type HFBR4531 Non-Latching Connector Attached B-4.3 Polishing Fiber Ends Insert the connector fully into the polishing fixture with the trimmed fiber sticking out from the bottom of the fixture (The fixture is made so that both fibers of the duplex cable or two simplex cables can be polished at the same time.) To fasten the connector onto simplex cable (for duplex cables, skip to step 5): a Fold the latch half of the connector over onto the tube half Make sure that the cable remains properly seated (per step 3) and that the edges of the halves are aligned Note The four dots on the bottom of the polishing fixture are wear indicators Replace the fixture when any dot disappears Typically, the polishing fixture can be used 10 times b Press the halves together with your fingers until they snap c Go to step Place the 600-grit, black abrasive paper with the rough side up onto a smooth, flat surface Top View of Connectors Termination Point 2.5 - 3.5 in Split in Min From Termination Point Tracer Marks On Cable Label Total Cable Length Per Requirements Figure B-6 Assembled Duplex Fiber-Optic Cable with HFBR-4531 Non-Latching Connectors 44 • Appendix C, Installing Fiber-Optic Cable Load Commutated Inverter, Installation and Startup for Static Starter Applications Pressing down on the connector, polish the fiber and connector using a figure-8 pattern of continuous strokes (see Figure B-7) until the connector is flush with the bottom of the polishing fixture Polishing Fixture GEH-6125A Place the 2000-grit sandpaper with rough side up onto a smooth, flat surface Press firmly down on the connector (in the polishing fixture) and polish the connector end and fiber in a figure-8 motion for – 10 strokes Wipe the connector and fixture with a clean, lintfree cloth or tissue Connector Polishing Paper Place the 3-micron pink lapping film with dull side up onto a flat, smooth surface "Figure 8" Pattern Press firmly down on the connector The latch on the connector should be resting against the flat surface of the two raised portions of the polishing fixture Polish the connector end and fiber in a figure-8 motion for – 10 strokes 10.Wipe the connector with a with an alcohol wipe Then inspect the fiber end using the instructions in section B-5 Figure B-7 Polishing Fiber-optic Cable in Connector B-5 Inspecting Fiber Ends Wipe the connector and fixture with a clean, lintfree cloth or tissue Before connecting fiber-optic cable to any equipment, use Table B-1 to check the ends for proper termination and damage Table B-1 Procedures for Inspecting Fiber-Optic Cable Ends Inspection Procedure Check the fiber end for pistoning, as follows: a Backlight one end of the cable b At the other end, use a magnifier to view the fiber at an angle Check the relative position of the fiber end to the connector end Appearance of Fiber End Problem How to Correct No action required (fiber has been terminated and Fiber Even With Place a dust cap polished to the required Connector End on the end until level) use Connector End None Pistoning: Fiber not even Fiber Below with connector Connector End end Reject assembly Re-terminate per section B-4, then re-inspect per section B-5 Fiber Above Connector End Appendix B, Installing Fiber-Optic Cable • 45 GEH-6125A Innovation Series AC Drives Table B-1 Procedures for Inspecting Fiber-Optic Cable Ends – Continued Inspection Procedure Appearance of Fiber End Check that the fiber end is polished correctly, as follows: a Backlight one end of the cable b At the other end, use a magnifier to view the fiber end straight on (not at an angle) Check the appearance of the fiber surface Connector End Fiber Is Round and Without Scratches Fiber Surface Cloudy or Distorted a Backlight one end of the cable How to Correct No action required (fiber and connector end have Place a dust cap been terminated and on the end until polished correctly) use None Fiber Has a Few Light Scratches Fiber Not Round Check that a black band is clearly visible, as follows: Problem Black Band Appears Sharp and Clear Fiber end damaged Reject assembly Re-terminate then re-inspect per sections B-4 and B-5 Fiber poorly polished Re-polish per section B-4.3, then re-inspect per section B-5 If re-polishing once does not fix this problem, then reject the assembly Reterminate and re-inspect per sections B-4 and B-5 None No action required (black band indicates correct Place a dust cap termination) on the end until use b At the other end, use a magnifier to view the fiber Start viewing straight on and gradually increase the angle of tilt A black band should appear Black Band Appears Distorted Surface Cloudy, Black Band Barely Visible 46 • Appendix B, Installing Fiber-Optic Cable Fiber poorly polished Re-polish per section B-4.3, then re-inspect per section B-5 If re-polishing once does not fix this problem, then reject the assembly Reterminate and re-inspect per sections B-4 and B-5 Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH-6125A B-6 Connecting Fiber-Optic Cable to Modules To remove the connector: The fiber-optic connectors are color coded to help identify the correct connection The connector may be blue or gray, or may have blue or gray tag near the termination point If the connector has a latch, press and hold down the latch with your thumb Grasp the connector with both hands Pull the connector assembly away from the module receptacle To insert a fiber-optic connector into a module: Remove the dust cap Align the connector with the receptacle that matches it in color (or color of the tag) Push the connector into the module until the connector snaps Appendix B, Installing Fiber-Optic Cable • 47 GEH-6125A Innovation Series AC Drives Notes: 48 • Appendix B, Installing Fiber-Optic Cable Load Commutated Inverter, Installation and Startup for Static Starter Applications C C-1 Introduction Cable Separation and Routing This appendix should be used to check for proper cabling after the equipment is installed, but before beginning startup The recommended practices in this appendix are consistent with the installation guidance document GEH-6011 This section is presented as follows: Section Heading GEH-6125A Page C-1 Introduction 49 C-2 Low-Level Signals (Level L) 49 C-3 Medium-Level Signals (Level M) 49 C-4 High-Level Signals (Level H) 49 C-5 Class Codes 50 C-6 Cableway Spacing Guidelines 50 C-7.1 General Cableway Spacing 50 C-7.2 Tray/Tray Spacing 51 C-7.3 Tray/Conduit Spacing 51 C-7.4 Conduit/Conduit Spacing 51 Note If a situation at the installation site is not covered in this document, or if these guidelines cannot be met, please contact GE before installing the cable Cables that carry signals and power are categorized into four defining levels: low, medium, high, and power Each level can include classes Electrical noise from cabling of various voltage levels can interfere with microprocessor-based control systems, causing the drive to malfunction This appendix provides recommended cable separation practices to reduce electrical noise C-2 Low-Level Signals (Level L) These signals consist of: • Analog signals through ±50 V dc • Digital (logic-level) signals less than 28 V dc • – 20 mA current loops • LAN signals, such as ISBus, Profibus, and Genius • Signal commons ACOM, DCOM, CCOM, and SCOM C-3 Medium-Level Signals (Level M) These signals consist of: • Analog signals greater than 50 V ac with less than 28 V ac ripple • 28 V dc light and switching circuits • 24 V dc switching circuits • PCOM, SHCOM C-4 High-Level Signals (Level H) These signals consist of: • Dc switching signals greater than 28 V • Analog signals greater than 50 V dc with greater than 28 V ac ripple • Regulating signals 50 V with currents less than 20 A • Ac feeders less than 20 A Appendix C, Cable Separation and Routing • 49 GEH-6125A C-5 Power (Level P) Power cabling carries ac and dc buses – 800 V with currents 20 A – 800 A C-6 Class Codes Certain conditions can require that specific wires within a level be grouped in the same cable This is indicated by following class codes, defined as follows: S Special handling of specified levels can require special spacing of conduit and trays Check dimension chart for levels These wires include: • Signals from COMM field and line resistors • Signals from line shunts to regulators U High voltage potential unfused wires over 600 V dc PS Power greater than 800 V dc and/or greater than 800 A If there is no code, there are no grouping restrictions C-7 Cableway Spacing Guidelines Spacing (or clearance) between cableways (trays and conduit) depends on the level of the wiring inside C-7.1 General Cableway Spacing General spacing practices apply to all levels of cabling They should be used with the specific spacing values in Tables C-1 through C-3 • All cables of like signal levels and power levels must be grouped together in cableways • In general, different levels must run in separate cableways, as defined in the different classes Intermixing cannot be allowed, except as noted by exception Innovation Series AC Drives • When unlike signals must cross in trays or conduit, cross them in 90° angles at a maximum spacing Where it is not possible to maintain spacing, place a grounded steel barrier between unlike levels at the crossover point • When entering terminal equipment where it is difficult to maintain the specific spacing guidelines given in Tables C-1 through C-3, keep parallel runs to a minimum, not to exceed ft in the overall run • Where Tables C-1 through C-3 show tray or conduit spacing as 0, the levels can be run together Spacing for other levels must be based on the worst condition • Trays for all levels should be metal and solidly grounded with good ground continuity Conduit should be metal to provide shielding (Use Table C1 for non-metal conduit/tray spacing.) • When separate trays are impractical, levels L and M can combined in a common tray if a grounded steel barrier separates levels This practice is not as effective as tray separation, and may require some rerouting at system startup If levels L and M are run side-by-side, a 1-inch minimum spacing is recommended • Locate levels L and M trays and conduit closest to the control panels • Trays containing level L and level M wiring should have solid bottoms and be covered to provide complete shielding There must be positive and continuous cover contact to side rails to avoid highreluctance air gaps, which impair shielding • Trays containing levels other than L and M wiring can have ventilation slots or louvers • Trays and conduit containing levels L, M, and H(S) should not be routed parallel to high power equipment enclosures of 100 kVA and larger at a spacing of less than ft for trays and 1/2 ft for conduit • Interconnecting wire runs should carry a level designation • Level H and H(S) can be combined in the same tray or conduit, but cannot be combined in the same cable • If wires are the same level and same type signal, group those wires from one panel to any one specific location together in multiconductor cables • Level H(S) is listed only for information since many customers want to isolate unfused high voltage potential wires • Do not run levels H and H(S) in the same conduit as level P 50 • Appendix C, Cable Separation and Routing Load Commutated Inverter, Installation and Startup for Static Starter Applications • Levels H and P can be run in a common tray if levels are separated by a barrier This barrier does not have to be grounded Spacing should be for level P • Where practical for level P and/or P(S) wiring, route the complete power circuit between equipment in the same tray or conduit This minimizes the possibility of power and control circuits encircling each other GEH-6125A Table C-2 Spacing* Between Metal Trays and Conduit Level L M H H(S) P P(S) L 4 18 18 M 4 12 18 H 4 0 H(S) 4 0 12 P 18 12 0 P(S) 18 18 12 0 *Spacing is in inches C-7.2 Tray/Tray Spacing Table C-1 defines the recommended minimum distance between trays: the top of one tray and the bottom of the tray above, or the sides of adjacent trays Table C-1 also applies if the distance is less than ft between trays and power equipment up to 100 kVA Table C-1 Spacing* Between Trays C-7.4 Conduit/Conduit Spacing Use Table C-1 for conduit/conduit spacing if: • Conduit is non-metal • Distance is less than 2.5 ft between conduit and power equipment rated up to 100 kVA Level L M H H(S) P P(S) L 6 26 26 M 6 18 26 H 6 0 12 H(S) 6 0 18 P 26 18 0 Level L M H H(S) P P(S) P(S) 26 12 12 18 0 L 3 12 12 M 3 12 H 3 0 0 *Spacing is in inches C-7.3 Tray/Conduit Spacing Table C-3 lists the minimum recommended distance between the outside surfaces of metal conduit run in banks Table C-3 Spacing* Between Metal Conduit Runs H(S) 3 Use Table C-1 for tray/conduit spacing if: P 12 0 • Trays or conduit are non-metal P(S) 12 12 0 • Levels L and M trays are not covered (Table C-2 assumes levels L and M trays are covered) • If the distance is less than ft between trays or conduit and power equipment up to 100 kVA • Table C-2 lists the minimum recommended distance between the outside surfaces of metal trays and conduit *Spacing is in inches Appendix C, Cable Separation and Routing • 51 GEH-6125A Innovation Series AC Drives Notes: 52 • Appendix C, Cable Separation and Routing To: g GE Industrial Systems Documentation Design, Rm 291 1501 Roanoke Blvd Salem, VA 24153-6492 USA Reader Comments Fax: 1-540-387-8651 (GE Internal DC 8-278-8651) General Electric Company We welcome comments and suggestions to make this publication more useful Your Name Today’s Date Your Company’s Name and Address Job Site GE Requisition No If needed, how can we contact you? Fax No Phone No E-mail Your Job Function / How You Use This Publication Publication No Address Publication Issue/Revision Date General Rating Contents Organization Technical Accuracy Clarity Completeness Drawings / Figures Tables Referencing Readability Excellent ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ Good ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ Fair ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ Poor ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ Additional Comments _ _ _ _ _ _ _ _ _ Specific Suggestions (Corrections, information that could be expanded on, and such.) 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TITLE GENERAL ELECTRIC COMPANY GEH- 6125A Innovation Series AC Drives REVISIONS Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH- 6125A 2-2 Mounting 2-1.3 Unpacking... glycol mixture per GEH- 6374 Reference Documents Required: ă LCI drive and exciter elementary diagram ă GEH- 6374 (technical manual for LCI liquidcooling system) Supplementary: ă GEH- 6373 (LCI Users... Corporation Load Commutated Inverter, Installation and Startup for Static Starter Applications GEH- 6125A Safety Symbol Legend Indicates a procedure, practice, condition, or statement that, if not