Summary of Contents for Emerson ASTEC Helios Candeo AP6C75AA
Page 1
Astec Advanced Power Systems IM6C75AA Helios Candeo Power System AP6C75AA Installation Manual P0914426 Standard 3.00 March 2001 Astec Advanced Power Systems A part of Emerson Network Power...
Page 3
A part of Emerson Network Power Helios, Helios Candeo, Advanced Power Systems and the Helios Candeo logo are trademarks of Astec International Ltd. The Emerson logo is a trademark and a service mark of Emerson Electric Co. Helios Candeo Power System – AP6C75AA Installation Manual...
Page 5
Publication history March 2001 Standard Issue 3.00. Revisions and improvements throughout the manual and convert to latest Emerson template. (ECN102-25123) January 2001 Standard Issue 2.0. Minor revisions throughout the manual and change from Astec to Emerson identity. December 2000 Standard Issue 1.0. General revision throughout to add latest information and comments from field trial.
Page 6
6 Publication history This page is left blank intentionally. IM6C75AA P0914426 Standard 3.00 March 2001...
Contents About this document 1.1. Purpose of this document.................... 13 1.2. Applicability of this document ..................13 1.3. How this document is organized .................. 16 1.4. Reference documents....................16 Preparation 2.1. Installation overview ....................17 2.2. Tools and test equipment .................... 17 2.3.
Page 8
8 Contents 3.5.1. Standard anchoring in a concrete floor ............27 3.5.2. Wood floor...................... 28 3.5.3. Earthquake anchoring..................29 3.5.4. Raised floor....................30 3.6. Securing adjacent frames.................... 31 3.7. Installing the interframe DC link bar between adjacent frames DC backbones ..... 32 3.8.
Page 9
Contents 9 End of job routines and turnover 6.1. General ........................77 6.2. Designation ......................... 77 6.2.1. Frame numbering.................... 77 6.2.2. Rectifiers......................78 6.2.3. Distribution ....................78 6.3. Installing the top cover....................80 6.4. Installation of the optional cabinet look-alike covers and door ........80 6.5.
Page 10
10 Contents Figure 3.15 – Special support group for isolated applications............ 36 Figure 3.16 – Installation of the frame earthquake bracing kit ..........37 Figure 4.1 – Typical cabling layouts for top-fed Helios Candeo power system installations ..44 Figure 4.2 – Typical installation of the power system frame ground lead ........47 Figure 4.3 –...
Page 11
Contents 11 List of Procedures Procedure 3.1 – Marking the floor for the anchor positions............22 Procedure 3.2 – Drilling for the anchor positions in a concrete floor.......... 24 Procedure 3.3 – Drilling for the anchor positions in a wood floor ..........24 Procedure 3.4 –...
Page 12
12 Contents This page is left blank intentionally. IM6C75AA P0914426 Standard 3.00 March 2001...
About this document 1.1. Purpose of this document This document provides detailed guidelines and procedures for the installation of an AP6C75AA Helios Candeo power system. This document is intended to be used by Astec Advanced Power Systems installers, and non-Astec installers such as value added resellers and sub- contractors, installing power equipment on behalf of Astec Advanced Power Systems, as well as end users performing their own installation.
14 About this document Figure 1.1 – Perspective view of a typical top fed AP6C75AA Helios Candeo power system IM6C75AA P0914426 Standard 3.00 March 2001...
About this document 15 Figure 1.2 – Perspective view of a typical bottom fed AP6C75AA Helios Candeo power system Helios Candeo Power System – AP6C75AA Installation Manual...
16 About this document 1.3. How this document is organized This document is divided into seven parts: Front matters: contain the document information, the Table of Contents and the present Chapter. Preparation: describes the procedures when receiving, handling and storing the equipment, the tools and test equipment requirements, and the warning and cautions.
Preparation 2.1. Installation overview The following is the recommended sequence for the installation and start-up procedures. The sequence may change according to job and site conditions. • Obtain the recommended tools and test equipment. • Read the "Precautions" section carefully. •...
18 Preparation • ratchet set (12.5 mm [1/2 in.] drive) • torque limiting wrench (10 mm [3/8 in.] drive) • canvas sheets, 1 m x 2 m (4 ft x 6 ft) • hammer drill • 13 mm (1/2 in. [standard]) or 18 mm (11/16 in. [earthquake]) concrete bit •...
Page 19
Preparation 19 WARNING Protecting personnel against electrical shocks. The power plant cabling shall be performed by qualified personnel in conformance with local and national electrical codes. Input voltages to the rectifiers are at a dangerous level. Ensure that the circuit breakers are locked in the OFF position at the AC service panel before attempting to work on the power plant.
20 Preparation CAUTION Protection of Customer premises Protect the floors and walls against damage when handling the equipment. CAUTION Preventing over torque damage Do not over torque nuts and bolts. Over torquing causes the threads to strip or the bolt to break. Use the appropriate torque values indicated in each section.
Locating and erecting the frame(s) 3.1. General This Chapter provides an overview of the requirements and procedures to be followed when locating, erecting, aligning, leveling and anchoring the AP6C75AA Helios Candeo power system frame(s). 3.1.1. Isolation considerations In systems where ISG (isolated system ground) topology is used, hardware for isolating the frame(s) from the floor is supplied per the specifications.
22 Locating and erecting the cabinets In non-earthquake areas, it may be permitted to locate the frame(s) on the floor without floor anchoring. In earthquake areas, it may be necessary to pour a new slab of concrete over the existing floor and to anchor the frame(s) into that new slab.
Locating and erecting the cabinets 23 Figure 3.1 – Floor anchor marking pattern 23.63” 1.43” 2.00” 19.58” 16.15” Preferred location for the anchors 12.15” 15.0” Non-preferred location for the anchors Front 3.3. Floor anchoring Note: Floor anchoring requirements may be different where the equipment is earthquake braced.
24 Locating and erecting the cabinets Procedure 3.2 – Drilling for the anchor positions in a concrete floor Step Action Check with the customer and architect floor plans that there are no pipes, conduits, beams or any other obstructions in the concrete slab that could interfere with the drilling.
Locating and erecting the cabinets 25 After drilling the hole, use the vacuum cleaner to clean all the wood chips and dust in and around the hole. Repeat steps 2 and 3 for every anchoring hole for the frame. Repeat steps 2 to 4 for any other frame, if applicable. –end–...
26 Locating and erecting the cabinets There is only one appropriate method to lift a Helios Candeo frame by its top and it is described in the following procedure and illustrated in Figure 3.2. This method also applies when lifting the frame out of its shipping crate. CAUTION Protect the AC box against damages when lifting the frame.
Locating and erecting the cabinets 27 Figure 3.2 – Appropriate method of lifting a Helios Candeo frame by its top Typical sling arrangement Never use the sling Direction without shackles as this of pull may break the eyebolts Shackle Shackle Stiffening bar: Do not use at 45°...
28 Locating and erecting the cabinets Figure 3.3 – Assembly stack-up for standard concrete anchors Threaded rod Hex nut Flat washer Isolating bushing Split ring washer Frame base Flat washer Isolation pad (optional) Concrete floor 3/8" (10 mm) drop in anchor 3.5.2.
Locating and erecting the cabinets 29 3.5.3. Earthquake anchoring Earthquake anchoring is that type used in earthquake areas up to Zone 4 per requirements from Telcordia Technologies (formerly Bellcore). CAUTION Preserving the integrity of earthquake installations The AP6C75AA Helios Candeo power system frame is earthquake qualified when properly anchored to a 3000 psi (2.11 kg per sq.
30 Locating and erecting the cabinets Set each anchor applying a torque of 60 ft-lb (81 N-m). Repeat steps 1 to 8 for any other frame, if applicable. –end– Figure 3.5 – Assembly stack-up for earthquake concrete anchors Threaded rod Hex nut Belleville washer Flat washer...
Locating and erecting the cabinets 31 Figure 3.7 – Alternate method of anchoring the rods to the sub-floor Cantruss or Unistrut channels anchored to floor, then rods bolted to channels. Specific requirements and procedures for the anchoring of power frames may be supplied either by the job specifications, by the Customer or by the raised floor manufacturer.
32 Locating and erecting the cabinets Figure 3.9 – Securing adjacent frames Use the interframe linking plate (shown in the previous illustration) to secure adjacent frames to each other. Screw finger tight only until the interframe DC link bar and top supporting hardware are installed.
Locating and erecting the cabinets 33 Carefully slide the interframe DC link bar into position. Enter through the front or through the openings made for that purpose in the frame uprights, whichever is most convenient, as shown by the arrows in Figure 3.10. Align the mounting holes on the interframe DC link bar with the mounting holes on the back bone inside the first frame and secure in place using the hardware supplied for that purpose.
34 Locating and erecting the cabinets Figure 3.11 – Perspective view of a bottom installed interframe DC link bar between adjacent frames DC backbones (top fed applications) Anchor cover cap Figure 3.12 – Perspective view of a top installed interframe DC link bar between adjacent frames DC backbones (bottom fed applications) IM6C75AA P0914426 Standard 3.00 March 2001...
Locating and erecting the cabinets 35 Figure 3.13 – Exploded view of the bolting material for the interframe DC link bar 3.8. Top support The type of frame used for the Candeo power system is designed for freestanding seismic applications and must not be attached to any other structure than the supporting floor in order to maintain the anti-seismic qualification in seismic applications.
36 Locating and erecting the cabinets Figure 3.14 – Typical top support group for standard frames Shown without the cable rack for clarity Cable rack Interframe link Auxiliary framing plate if two or Front more frames Front view are provided VIEW A - A Frame channel upright...
Locating and erecting the cabinets 37 Figure 3.16 – Installation of the frame earthquake bracing kit P0909060 relay rack 7 foot high (not part of kit) P0909058 strap (2 places) P0916463 hex jam nut (4 places) P0432022 hex nut (4 places) P0912564 tapered bushing (4 places)
Page 38
38 Locating and erecting the cabinets The rectifiers do not require any cabling and shall not be installed until told to do so in the appropriate Chapter. Follow the equipment specifications provided for your job, observing the position numbers punched onto the frame uprights near the mounting holes. IM6C75AA P0914426 Standard 3.00 March 2001...
Cabling and connecting 4.1. General This Chapter covers the cabling and connecting procedures for the AP6C75AA Helios Candeo power system. These procedures are divided into five sections: • cabling and connecting the frame and reference grounds, • cabling and connecting the AC supply for the rectifiers, •...
40 Cabling and connecting Table 4.1 – Flammability rating of wires and cables for the United States If the cables are used in: they must meet the following rating (note 2): Plenum (note 1) UL910 (“CMP” marking) (or FT1 in conduit) Commercial buildings, including risers UL1666 (“CMR”...
Page 41
Cabling and connecting 41 Top and bottom frame ground connecting • 1 set of holes tapped for 1/4” bolts at 5/8” c-c plate • 1 set of holes tapped for 3/8” bolts at 1” c-c • 1 set of holes tapped for 1/2” bolts at 1-3/4” c-c Table 4.4 –...
Page 42
42 Cabling and connecting A0902943 313 kcmil 3/8 in. 1 in. 1.38 A0352982 350 kcmil 3/8 in. 1 in. 1.29 - 1.34 A0297951 350 kcmil 1/2 in. 1.75 in. 1.29 - 1.34 A0320862 373 kcmil 3/8 in. 1 in. 1.52 - 1.63 A0902946 373 kcmil (NT*) 3/8 in.
Cabling and connecting 43 500 MCM (or kcmil) 500000 253.36 535 MCM (or kcmil) 535300 750 MCM (or kcmil) 750000 380.00 777 MCM (or kcmil) 777700 Note 1: For large cables, sizes are expressed using the shortcut notation MCM or kcmil which both represent “thousands of circular mils”. Note 2: Wire sizes 0, 00 and 0000 are also represented as 1/0, 2/0 and 4/0 respectively.
Page 44
44 Cabling and connecting • The battery cables are entering the frame through the center, at the top for a top-fed system, or at the bottom for a bottom-fed system. • The load cables to the protection devices and the battery return busbars inside the Distribution Modules are entering the frame through the center, at the top for a top-fed system, or at the bottom for a bottom-fed system.
Cabling and connecting 45 4.2. Cabling and connecting the grounding leads This section covers the cabling and connecting of the grounding leads for the AP6C75AA Helios Candeo power system: the frame or safety ground lead(s) for the frame(s) and the battery return reference (BRR) ground lead for the system. CAUTION Follow local requirements and electrical code.
46 Cabling and connecting Table 4.7 – Recommended cable size for the frame ground collector Cable length Recommended size (see notes 1 and 2) 0 to 20’ No. 2 AWG 20 to 40’ No. 0 AWG 40 to 80’ No. 0000 AWG 80 to 160’...
Page 47
Cabling and connecting 47 Figure 4.2 – Typical installation of the power system frame ground lead BPG or FGB BPG or FGB FG – sized per note FG - sized per 2 and Table 4.6 Table 4.6 Collector cable – sized per note 1 and Table 4.6 FG - 6 AWG...
48 Cabling and connecting 4.2.2. Connecting the power plant battery return reference (BRR) lead Unless specifically instructed otherwise in the specifications or by the Customer, the battery return reference (BRR) lead is usually connected as shown in Figure 4.4 and as described in Procedure 4.2. CAUTION Maintain the integrity of the grounding system.
Cabling and connecting 49 Procedure 4.2 – Installing and connecting the battery return reference lead Step Action Connect one end of the battery return reference (BRR) ground cable to the BR+ battery return busbar inside the Battery Connection Module (see Figure 4.4).
50 Cabling and connecting 4.3.2. Cabling and connecting the rectifier AC interface modules The AP6C75AA Helios Candeo power system uses single-phase AC input, 50 A DC output, plug-in type rectifiers. Each rectifier position requires its own AC feed. The rectifier can be connected phase-to phase to a 120/240 V single phase AC source or a 120/208 V 3-phase AC source, in which case the recommended AC supply circuit breaker is a 30 A 2-pole unit, or phase-to-neutral to a 230/415 V 3-phase AC source, in which case the recommended AC supply circuit...
Page 51
Cabling and connecting 51 Figure 4.5 – Typical conduit, AC box and channel installation for bulk wiring (top fed applications only) P PLUG AC ADAPTER AC adapter Snap plug Conduit Building AC supply AC service panel AC LID LINKING PLATE RBAY Pull box (if required)
Page 52
52 Cabling and connecting Figure 4.7 – Typical layout of individual armored cables on the outside of the frame Armored cables Strain relief Bottom section connectors Enlarged view of left side of Part of framework rectifier AC interface module When using larger size Tightening cables, the...
Cabling and connecting 53 Connect the AC supply to the rectifier AC interface modules as described in Procedure 4.3 and as shown in Figure 4.8. If bulk wiring is used, the optional AC box, channel and conduits as shown in Figure 4.5 should have been installed prior to starting the procedure.
54 Cabling and connecting If applicable, feed the cables incoming from the outside of the frame through the strain relief connectors installed in step 9 and bring the wires within the rectifier AC interface module at the appropriate rectifier position (refer to Figure 4.7).
Cabling and connecting 55 4.4.1. Segregation from AC cables DC current carrying wires and cables are normally segregated from AC current carrying cables as mentioned in section 4.3.1 of the present Chapter. 4.4.1.1. Connecting the battery cables in the Battery Connection Module(s) WARNING Protect the equipment against electrical damage.
56 Cabling and connecting Use the appropriate lug to mark the cables, then strip the cables to the correct length. Crimp the appropriate two-hole lugs onto the cable ends. Connect the –48V lead(s) inside the Battery Connection Module as shown in Figure 4.9, applying a torque per Table 4.6 depending on the size of the bolting material used.
Page 57
Cabling and connecting 57 Module and work towards the bottom of the frame. This will allow for easy access into the frame during future expansion or repair. All load cables should be formed towards the rear, then upward (top fed) or downward (bottom fed) to exit the top or bottom of the frame.
Page 58
58 Cabling and connecting Figure 4.10 – Cabling and connecting inside a Distribution 500 module Dual position Insert load clip into Single position load clip for load clip distribution module loads for loads as shown under 65 A or 65 A more 5/8”...
Page 59
Cabling and connecting 59 Figure 4.11 – How to remove load clips TO REMOVE THE LOAD CLIP LIFT THIS TAB USING A TO INSTALL A SCREWDRIVER PLACE IT ON INSERTED INTO MAKING SUR THE SLOT ARE INSERT SLOTS, AND THE REAR U INTO PLACE VIEW OF THE DOUBLE LOAD CLIP WITH THE COVER OPEN...
Page 60
60 Cabling and connecting Figure 4.14 – Typical cabling layout inside top-fed and bottom-fed Helios Candeo power systems Bottom fed system Top fed system Typical layout for the load cables inside a top fed Typical layout for the load cables inside a bottom fed Distribution Module Distribution Module IM6C75AA P0914426 Standard 3.00 March 2001...
Cabling and connecting 61 Procedure 4.5 – Connecting the distribution loads Step Action Verify that all circuit breakers are open (OFF) and that all fuses, if any, are removed on every Distribution Modules. Determine the length, size and quantity of load cables required, cut to the appropriate length, install, and secure in place as required.
62 Cabling and connecting Figure 4.15 – Typical method of tapping a riser cable to a larger cable for a large load Large cable to load Note: Cable drop must be sized to withstand “C” or “H” tap current capacity of the circuit’s protection fuse 2/0 or 4/0 riser or circuit breaker.
Page 63
Cabling and connecting 63 Figure 4.16 – Connector layout inside the System Manager (front cover open) Output ports Aux power Input ports + - + - + - + - + - + - CANFAR DE9 male RS-232 RS-485 DE9 male DE9 male Ethernet port RJ45 jack Table 4.10 –...
Page 64
64 Cabling and connecting J8-7 OUTPUT PORT 3 (NC) CH3 OUT (NO) J8-19 OUTPUT PORT 7 (NC) CH7 OUT (NO) J8-8 OUTPUT PORT 3 (COM) CH3 OUT (NC) J8-20 OUTPUT PORT 7 (COM) CH7 OUT (NC) J8-9 OUTPUT PORT 3 (NO) CH3 (COM) J8-21 OUTPUT PORT 7 (NO)
Cabling and connecting 65 4.5.1. Connecting the Remote Sense leads to the batteries The Remote Sense + and Remote Sense – voltage regulation leads are used to feed the sensing signal inputs of the System Manager so they in turn regulate the rectifiers in order to provides the appropriate battery voltage at the battery terminals.
66 Cabling and connecting If requested by the Customer, connect the other end of this cable to an in-line fuse holder as shown in Figure 4.18. Connect the wire (or the other side of the in-line fuse holder, if applicable) to the –48V common connecting point for the batteries as shown in Figure 4.18.
Cabling and connecting 67 Use the appropriate switchboard type cable (the terminal strips can accommodate gauge 16 to 26 wires) to connect all applicable signals according to job specifications, configuration sheets, drawings, equipment, and customer requirements. Refer also to Figure 4.16 as well as to Table 4.10 and Table 4.11. Note 1: Input ports 4, 5 and 6 are programmed at the factory and cannot be modified.
Page 68
68 Cabling and connecting Route the cable inside the Battery Connection Module as shown in Figure 4.17 and connect the red and black wires and the shield to the TB2 terminal block according to the terminal assignment given in Table 4.12 and according to the position programmed for Battery Temperature in the System Manager (1 or 2).
Cabling and connecting 69 4.5.4. Connecting of the interframe data link cable(s) If your job includes two or more Helios Candeo frames, install and connect the interframe data link cable(s) as illustrated in Figure 4.22. CAUTION Prevent erratic communications The impedance plugs are required to insure that the communication link is properly balanced.
70 Cabling and connecting 4.5.6. Connections at the communication ports The System Manager of the Helios Candeo power system provides several access ports to communicate with the system. These are: • the RS-232 port, • the RS-485 / RS-422 port, •...
Page 71
Cabling and connecting 71 Connect the –48 V lead(s) at the negative (–) terminal(s) of the battery string(s). Torque as recommended by the battery manufacturer. Connect the battery return lead(s) (+) at the positive (+) terminal(s) of the battery string(s). Torque as recommended by the battery manufacturer. WARNING! Before completing the connection of the battery return leads (+) from the AP6C75AA Helios Candeo power system battery return busbar (BR+) to the positive (+) terminal of the battery strings, measure with a voltmeter...
Page 72
72 Cabling and connecting This page is left blank intentionally. IM6C75AA P0914426 Standard 3.00 March 2001...
Start-up and adjustment procedures 5.1. General The AP6C75AA Helios Candeo is an intelligent power system controlled by a microprocessor-based unit called the “System Manager”. There are absolutely no hardware type adjustments such as potentiometers, switches, etc. on this type of controller. Even the rectifiers are fully dependent on the System Manager for their settings.
Page 74
74 Start-up and adjustment procedures WARNING Protecting personnel against electrical shocks. Except for the fan module, these rectifiers contain no field serviceable parts. Dangerous voltages are present inside the rectifier while it is in operation. Do not attempt field repair. Send to your nearest Astec APS Customer Services department.
Start-up and adjustment procedures 75 CAUTION Preventing damage to the locking mechanism When sliding the System Manager and the Rectifier Module into the Helios Candeo Power System, the locking latches must be fully open to prevent damage to the locking mechanism system (see Figure 5.1).
Page 76
76 Start-up and adjustment procedures Once the Green pathfinder is lit, proceed as described in the “Start-up and Configuration Settings”, “Monitoring Modules” and “Maintenance Functions” Chapters of user manual UM6C75AA to bring the complete system to a fully operational state. IM6C75AA P0914426 Standard 3.00 March 2001...
End of job routines and turnover 6.1. General This Chapter covers the job routines to be performed towards the end of the installation project to ensure that the finished product meets all Astec Advanced Power Systems and Customer standard requirements. 6.2.
78 End of job routines and turnover Note that each frame is provided with a label on which the installer can use the appropriate marking method to identify the frame. Figure 6.1 – Typical stamping of AP6C75AA Helios Candeo frame(s) 3/4”...
Page 79
End of job routines and turnover 79 The following illustration shows a typical example of stamping on the label inside a Distribution Module. Note that the front cover of the Distribution Modules are fully removable to ease the stamping procedures. If there are more than one Distribution Modules, ensure that the front covers are not interchanged.
80 End of job routines and turnover 6.3. Installing the top cover The top cover (item 6 in Figure 6.4) is used to prevent any foreign objects from falling into the frame and possibly causing short-circuits. The cover is a semi- rigid plastic (UL94V0 flammability) with pre-punched holes for ventilation.
Appendix B: Recommended AC generator requirements for APS power systems For proper operation and reliability of your Astec APS power systems, AC generators should meet the requirements of the “Engine Alternator Standard” document (spec. 4PI-00038) available in the partners’ section of the Astec APS web site www.astecaps.com.
Page 86
86 Appendix B: Recommended AC generator requirements for APS Power Systems This page is left blank intentionally. IM6C75AA P0914426 Standard 3.00 March 2001...
Appendix C: Recommended replacement parts Refer to Appendix A of user manual the UM6C75AA for the recommended replacement parts for the AP6C75AA Helios Candeo power system. Helios Candeo Power System – AP6C75AA Installation Manual...
Page 88
88 Appendix C: Recommended replacement parts This page is left blank intentionally. IM6C75AA P0914426 Standard 3.00 March 2001...
Appendix D: Technical service assistance Astec Advanced Power Systems Emergency Technical Assistance Service • 24 hours/7 days a week Toll-Free Emergency Technical Assistance Line • On-line support service that complements field technical support organizations and field service groups including ETAS (Emergency Technical Assistance Service) and ITAS (Installation Technical Assistance Service) •...
Page 90
90 Appendix D: Technical service assistance APS Emergency Technical Assistance Service Toll-Free Telephone Numbers In the U.S.A.: 1-800-992-8417 In Canada: 1-800-363-2288 In Europe: In Asia & Pacific: Austria 800-213-49156 Australia 800-213-49156 Belgium 800-213-49156 Hong Kong 800-213-49156 Denmark 800-213-49156 Japan 800-213-49156 Finland 800-213-49156 South-Korea...
Page 91
Appendix D: Technical service assistance 91 Fold and tape Astec Advanced Power Systems BUSINESS REPLY MAIL FIRST CLASS Astec Advanced Power Systems Dept. W5542 2280 Alfred-Nobel Blvd Saint-Laurent (Quebec) Canada H4S 2A4 Fold here Helios Candeo Power System – AP6C75AA Installation Manual...
Page 92
92 Appendix D: Technical service assistance Your Opinion Is Important To Us Please help us better meet your needs by completing and returning the following questionnaire. Your replies give us valuable insight into the effectiveness of our documentation Document title: Helios Candeo Power System Installation Manual, IM6C75AA Job function: Are you an Astec Advanced Power Systems employee? How did you use this document?
List of terms ampere AC or ac alternating current American wire gauging battery BAT RTN battery return Battery Connection Module building principal ground battery return battery return reference center to center DC or dc direct current fuse frame ground floor ground bar ft-lb foot-pound GRD or GRND...
Page 94
94 List of terms Newton-meter pound per square inch single point ground (connection) terminal block Underwriters Laboratories user manual volt IM6C75AA P0914426 Standard 3.00 March 2001...
Page 96
A part of Emerson Network Power Helios, Helios Candeo, Advanced Power Systems and the Helios Candeo logo are trademarks of Astec International Ltd. The Emerson logo is a trademark and a service mark of Emerson Electric Co. Document Number: IM6C75AA Document Issue: 3.00...