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Configuring Your Neutral and Ground Connections

6.1

Preferred Grounding Configuration, Wye-Connected Service

One of the most common configurations of Series 610 UPS Single-Module Systems is with 480 VAC

input, 480 VAC output and a connected load consisting of multiple Power Distribution Units (PDUs)

with isolation transformers in the PDUs to produce 208 VAC. For Canadian customers, the UPS mod-

ules usually have 600 VAC input and output. The same principles apply if the connected load is an

isolation transformer feeding various loads.

Figure 1

shows a typical installation.

Notice that the UPS module main input and bypass input are connected to a grounded-wye service. In

this configuration, the UPS module is not considered a separately derived source. The UPS module

output neutral is solidly connected to the building service neutral, which is bonded to the grounding

conductor at the service entrance equipment.
The isolation transformers in the PDUs are considered a separately derived source. Therefore the

PDU neutral should be bonded to the PDU grounding conductor and connected to a local grounding

electrode in compliance with NEC 250-26.

Figure 1 Preferred grounding configuration, wye-connected service

Advantages of this configuration include:

• A measure of common-mode noise attenuation, since the isolation (common-mode rejection) occurs

as close to the load as practical (i.e., at the PDU).

• The UPS module can be located remotely from the PDU without compromising common-mode

noise performance.

• By using UPS modules with 480 VAC input and output and creating 208 VAC at the PDU,

smaller and less costly power feeders can be used and less voltage drop (as a percent of nominal)

occurs.

NOTE

Impedance-grounded wye sources must be grounded in accordance with

6.5 - Grounding

Configuration, Corner-Grounded Delta or Impedance-Grounded Wye

NOTE

Some UPS modules are equipped with input isolation transformers. However, these

transformers have no effect upon any system grounding considerations. These modules will be

grounded exactly as shown in these pages.

NOTE

If there is a 4-pole Automatic Transfer Switch (ATS) between the service entrance and the UPS,

this configuration cannot be used. Refer to

6.2 - Alternate Grounding Configuration, Wye-

Connected Service

6.3 - Preferred Grounding Configuration With Isolated Bypass

to determine a suitable configuration.

GROUNDING
ELECTRODE
PER NEC 250-24

Содержание Liebert Series 610

Страница 1: ...AC Power For Business Critical Continuity Liebert Series 610 UPS Installation Manual 100 225kVA 60Hz Three Phase Single Module DISCONTINUED PRODUCT ...

Страница 2: ...following information available Part numbers _________________________________________________________________ Serial numbers ________________________________________________________________ Rating _______________________________________________________________________ Date purchased _______________________________________________________________ Date installed ____________________________________...

Страница 3: ...0 CONFIGURING YOUR NEUTRAL AND GROUND CONNECTIONS 12 6 1 Preferred Grounding Configuration Wye Connected Service 13 6 2 Alternate Grounding Configuration Wye Connected Service 14 6 3 Preferred Grounding Configuration With Isolated Bypass 15 6 4 Alternate Grounding Configuration Non Isolated 16 6 5 Grounding Configuration Corner Grounded Delta or Impedance Grounded Wye 17 6 6 Preferred Grounding Co...

Страница 4: ...m with Bypass Transformer Cabinet 42 Figure 24 Outline drawing 3 breaker Maintenance Bypass Cabinet 125 400A 43 Figure 25 Outline drawing 3 breaker Maintenance Bypass Cabinet 450 800A 44 Figure 26 Line up detail Single Module System SpaceSaver with 3 breaker Maintenance Bypass Cabinet 45 Figure 27 Line up detail Single Module System with 3 breaker Maintenance Bypass Cabinet 46 Figure 28 Line up de...

Страница 5: ... Power wiring terminals factory supplied 27 Table 3 Torque specifications 27 Table 4 Field supplied lugs 28 Table 5 Table 310 16 National Electrical Code Reprint 29 Table 6 Site planning data 600V input 66 Table 7 Site planning data 480V input 67 Table 8 Site planning data 208V input 68 ...

Страница 6: ...DISCONTINUED PRODUCT iv ...

Страница 7: ... prior to making contact WARNING Under typical operation and with all UPS doors closed only normal safety precautions are necessary The area around the UPS system should be kept free of puddles of water excess moisture and debris Special safety precautions are required for procedures involving handling installation and maintenance of the UPS system and the battery Observe all safety precautions in...

Страница 8: ...f not installed and used in accordance with this instruction manual may cause harmful interference to radio communications Operation of this unit in a residential area may cause harmful interference that the user must correct at his own expense NOTE Materials sold hereunder cannot be used in the patient vicinity i e cannot be used where UL 60601 1 cUL 60601 1 or IEC 60601 1 is required Medical App...

Страница 9: ...hout derating The batteries should not exceed 77 F 25 C At elevations above 4000 ft 1219m temperature derating may be required for full power output consult your Liebert sales representative or call 1 800 LIEBERT 7 Even though your Liebert UPS unit is 92 to 94 efficient the heat output is substantial For more specific information see Appendix A Be sure environmental conditioning systems can accomm...

Страница 10: ...ed to ensure proper handling of fault currents NOTE The instantaneous trip setting of the breaker feeding the UPS bypass input should be high enough to accommodate short duration overloads The bypass static switch inside the UPS can draw up to 10 times the system s rated current for up to three cycles ...

Страница 11: ...ved prior to unloading WARNING Exercise extreme care when handling UPS cabinets to avoid equipment damage or injury to personnel The UPS module weight ranges from 1500 to 4805 lbs 680 to 2180kg Battery cabinets weigh from 3050 to 5300 lbs 1383 to 2404kg Locate center of gravity symbols before handling cabinet Test lift and balance the cabinet before transporting Maintain minimum tilt from vertical...

Страница 12: ...ons 1 Verify that all items have been received 2 If spare parts were ordered verify arrival 3 Open doors and remove cabinet panels to check for shipping damage to internal components 4 Check for loose connections or unsecured components in the cabinet s 5 Check for installation of circuit breaker line safety shields There should be no exposed circuit breaker terminals when the cabinet doors are op...

Страница 13: ...et doors 4 ft 1 2m is recommended NEC requires sufficient clearance in front of the equipment to fully open all doors without restriction See drawings and local codes b Verify that there is adequate area in front of circuit breakers to perform maintenance Check installation drawings for location of breakers Check with local codes c Verify that there is adequate clearance above all cabinets to allo...

Страница 14: ... when working on batteries Remove watches rings and other metal objects Use tools with insulated handles Wear rubber gloves and boots Do not lay tools or metal parts on top of batteries Disconnect charging source prior to connecting or disconnecting battery terminals Determine if battery is inadvertently grounded If inadvertently grounded remove source of ground Contact with any part of a grounded...

Страница 15: ...chouc Ne pas poser d outils ou d objets métalliques sur les batteries Déconnecter la source de chargement avant de connecter ou de déconnecter les bornes de batterie Vérifier que la batterie n a pas été mise à la masse par inadvertance Si elle est mise à la masse éliminer la source de masse Tout contact avec des composants de batterie mise à la masse peut entraîner un choc électrique Éliminer le r...

Страница 16: ...spect the internal battery hold down straps 6 Environment Locate the battery cabinet in a clean dry environment Recommended temperature range for optimum performance and lifetime is 68 F to 77 F 20 25 C 7 Service Clearance Allow front access to the battery cabinet at all times for maintenance and servicing Electrical codes require that the battery cabinet be installed with no less than 3 ft 1m of ...

Страница 17: ...perature complies with manufacturer s specification Installations using vented lead acid batteries MUST have adequate ventilation to remove explosive gases per local and national codes 3 Low voltage control wiring must be kept separate from power wiring and run in separate conduits 4 Ensure that battery racks are properly grounded according to code requirements in your area If you have any questio...

Страница 18: ...rately derived source with its own grounding electrode What are the UPS input and output voltages Systems with 480 VAC input and output have sig nificantly different needs from systems with 480 208 VAC or 208 208 VAC What is the connected load Does the critical load consist of one or more Power Distribution Units PDUs Do the PDUs have isolation transformers Proper grounding should be based on NEC ...

Страница 19: ...cted to a local grounding electrode in compliance with NEC 250 26 Figure 1 Preferred grounding configuration wye connected service Advantages of this configuration include A measure of common mode noise attenuation since the isolation common mode rejection occurs as close to the load as practical i e at the PDU The UPS module can be located remotely from the PDU without compromising common mode no...

Страница 20: ... must flow In the previous configuration the current flows through the neutral conductor In this configuration the current flows through the ground path possibly tripping ground fault interrupters GFIs and distorting the bypass waveform reference Proper adjustment of ground fault interrupters is necessary to avoid unwanted tripping Figure 2 Alternate grounding configuration wye connected service T...

Страница 21: ...heoretically be done at either the UPS module or the Bypass Transformer However we recommend bonding at the Bypass Transformer because the UPS module will sometimes be powered down for maintenance and its output trans former will be out of the circuit The neutral should be bonded to ground and a local grounding elec trode should be installed at the Bypass Transformer per NEC 250 30 Figure 3 Prefer...

Страница 22: ...ce The UPS module output neutral and the load neutral are solidly connected to the building service neutral which is bonded to the grounding conductor at the service entrance equipment Figure 4 Alternate grounding configuration non isolated This arrangement may be used for systems with 208 VAC input and output However it does not pro vide any isolation or common mode noise attenuation for sensitiv...

Страница 23: ...Kit This kit uses control isolation transformers to create a reference point For this application the UPS output neutral must not be bonded to the UPS ground Figure 5 Grounding configuration corner grounded delta Figure 6 Grounding configuration impedance grounded wye These configurations have the same restrictions as explained in 6 2 Alternate Grounding Config uration Wye Connected Service except...

Страница 24: ...ot possible with battery cabinet systems Whether the battery system is open rack or cabinet the metal rack parts or cabinet must be grounded to the UPS module ground bus Figure 7 illustrates how a simple one cabinet system would be grounded For systems with multiple cabinets the same configuration would apply However for simplicity the installer can connect all the battery cabinet grounds for a pa...

Страница 25: ...hat all incoming high and low voltage power circuits are de energized and locked out before installing cables or making any electrical connections NOTE Use 75 C copper wire Select wire size based on the ampacities in Table 5 of this manual a reprint of Table 310 16 and associated notes of the National Electrical Code NFPA 70 CAUTION The weight of power cables must be adequately supported to avoid ...

Страница 26: ...supplied by a separately derived system at the supply transformer or motor generator set in accordance with the instructions in 6 0 Configuring Your Neutral and Ground Connections c The attachment plug receptacles in the vicinity of the unit or system are all to be of a grounding type and the grounding conductors serving these receptacles are to be connected to earth ground at the service equipmen...

Страница 27: ...SMS with input Isolation transformer and 208 208 480 480 or 600 600 VAC input output 600 208 VAC module with external bypass isolation transformer 480 208 VAC module with internal bypass isolation transformer 480 208 or 600 208 VAC module with both internal input isolation transformer and external bypass isolation transformer These configurations are for illustrative purposes only They represent o...

Страница 28: ...former and 208 208 480 480 or 600 600 VAC input output 480 280 VAC single input SMS with bypass isola tion transformer Single input modules are not available with both bypass and input isolation transformers 600 208 VAC single input SMS with bypass isola tion transformer Single input modules not avail able with both bypass and input isolation transformers These configurations are for illustrative ...

Страница 29: ...MIB MBB CB3 CB2 CB1 RIB MIB MBB CB3 CB2 CB1 MIB MBB CB3 CB2 CB1 RIB BIB MIB BYPASS ISO XFMR OPT 2 breaker Maintenance Bypass Cabinets for standard left and single input right modules 3 breaker Maintenance Bypass Cabinets for standard left and single input right modules 3 breaker and 4 breaker Maintenance Bypass Cabinets for stepdown voltage applications These configurations are for illustrative pu...

Страница 30: ...ower or control wiring might be necessary to con nect the battery cabinet system to the UPS Refer to Figures 24 through 29 Call Liebert Global Services to schedule installation check out final battery intercell connections and start up NOTE The UPS control and communication wiring are considered Class 2 circuits by NEC standards However NEC Class 1 wiring methods are required for these circuits to...

Страница 31: ...local electrical codes Improper wiring may cause damage to the UPS or injury to personnel CAUTION All shielded cables non shielded cables non shielded control wires non shielded battery breaker control wires and non shielded remote control wires must be housed in individual separate steel conduits Placing multiple cables in the same conduit with other control or power wiring may cause system failu...

Страница 32: ...1 Any additional special wiring required at your site NOTE If your installation includes a Maintenance Bypass Panelboard or a Transformer Cabinet some or all power cables will be terminated in these cabinets Make sure all required wiring between the UPS module and the optional cabinets is completed per the submittal drawings Observe phase rotation CAUTION If there are line to neutral loads connect...

Страница 33: ...les in the 48 frame rectifier and bypass input wiring is top entry directly to lugs on top of their respective circuit breakers DC link and critical bus output connection are top entry to frame mounted lugs Standard modules with top and bottom entry have access plates and a wireway on the right side of the modules All power connections are to busbars in the wireway Table 3 Torque specifications NU...

Страница 34: ... 714255 76 5 4 0 AWG 3 8 1 20 M973 12 714255 86 6 Color Keyed Aluminum Copper 1 AWG 3 8 0 75 60124 7 1 0 AWG 3 8 0 88 60130 8 2 0 AWG 3 8 0 97 60136 9 3 0 AWG 3 8 1 06 60142 10 Color Keyed Copper Cable Long Barrel 1 AWG 5 16 0 67 54947BE 11 1 0 AWG 3 8 0 75 54909BE 12 2 0 AWG 3 8 0 81 54910BE 13 3 0 AWG 1 2 0 94 54965BE 14 4 0 AWG 1 2 1 03 54970BE 15 250 MCM 1 2 1 09 54913BE 16 Narrow Tongue Coppe...

Страница 35: ... 520 475 520 535 555 585 285 310 320 330 355 340 375 385 395 425 385 420 435 450 480 600 700 750 800 900 1000 1250 1500 1750 2000 455 495 520 545 560 545 590 625 650 665 615 665 705 735 750 375 405 435 455 470 445 485 520 545 560 500 545 585 615 630 1000 1250 1500 1750 2000 CORRECTION FACTORS Ambient Temp C For ambient temperatures other than 30 C 86 F multiply the allowable ampacities shown above...

Страница 36: ...DISCONTINUED PRODUCT Installation Drawings 30 10 0 INSTALLATION DRAWINGS Figure 11 Outline drawing Single Module System SpaceSaver 88 797606 02 Rev 04 ...

Страница 37: ...DISCONTINUED PRODUCT Installation Drawings 31 Figure 12 Terminal details Single Module System 100 125kVA SpaceSaver 88 797606 08 Rev 07 ...

Страница 38: ...DISCONTINUED PRODUCT Installation Drawings 32 Figure 13 Terminal details Single Module System 150 225kVA 480V 600V SpaceSaver 88 797606 06 Rev 08 ...

Страница 39: ...DISCONTINUED PRODUCT Installation Drawings 33 Figure 14 Outline drawing Single Module System Standard 88 797606 03 Rev 03 ...

Страница 40: ...DISCONTINUED PRODUCT Installation Drawings 34 Figure 15 Terminal details Single Module System 100 125kVA 88 797606 15 Rev 05 ...

Страница 41: ...DISCONTINUED PRODUCT Installation Drawings 35 Figure 16 Terminal details Single Module System 150 225kVA 88 797606 09 Rev 05 ...

Страница 42: ...DISCONTINUED PRODUCT Installation Drawings 36 Figure 17 Battery power pack system 88 797616 03 Rev 08 ...

Страница 43: ...DISCONTINUED PRODUCT Installation Drawings 37 Figure 18 Battery power pack Size A 88 797616 01 Rev 10 ...

Страница 44: ...DISCONTINUED PRODUCT Installation Drawings 38 Figure 19 Line up detail Single or Multi Module System SpaceSaver with battery cabinets 88 797607 48 Rev 05 ...

Страница 45: ...DISCONTINUED PRODUCT Installation Drawings 39 Figure 20 Line up detail Single or Multi Module System with battery cabinets 88 797607 49 Rev 05 ...

Страница 46: ...DISCONTINUED PRODUCT Installation Drawings 40 Figure 21 Outline drawing Bypass Transformer Cabinet 208V 480V 600V 88 797609 14 Rev 03 ...

Страница 47: ...DISCONTINUED PRODUCT Installation Drawings 41 Figure 22 Line up detail Single Module System SpaceSaver with Bypass Transformer Cabinet 88 797607 11 Rev 05 ...

Страница 48: ...DISCONTINUED PRODUCT Installation Drawings 42 Figure 23 Line up detail Single Module System with Bypass Transformer Cabinet 88 797607 21 Rev 04 ...

Страница 49: ...DISCONTINUED PRODUCT Installation Drawings 43 Figure 24 Outline drawing 3 breaker Maintenance Bypass Cabinet 125 400A 88 791615 28 Rev 06 ...

Страница 50: ...DISCONTINUED PRODUCT Installation Drawings 44 Figure 25 Outline drawing 3 breaker Maintenance Bypass Cabinet 450 800A 88 791615 31 Rev 07 ...

Страница 51: ...DISCONTINUED PRODUCT Installation Drawings 45 Figure 26 Line up detail Single Module System SpaceSaver with 3 breaker Maintenance Bypass Cabinet 88 797607 13 Rev 05 ...

Страница 52: ...DISCONTINUED PRODUCT Installation Drawings 46 Figure 27 Line up detail Single Module System with 3 breaker Maintenance Bypass Cabinet 88 797607 23 Rev 04 ...

Страница 53: ...DISCONTINUED PRODUCT Installation Drawings 47 Figure 28 Line up detail Single Module System with Bypass Transformer Cabinet and 3 breaker Maintenance Bypass Cabinet 88 797607 26 Rev 04 ...

Страница 54: ...DISCONTINUED PRODUCT Installation Drawings 48 Figure 29 Line up detail Single Module System SpaceSaver with Bypass Transformer Cabinet and 3 breaker Maintenance Bypass Cabinet 88 797607 16 Rev 05 ...

Страница 55: ...DISCONTINUED PRODUCT Installation Drawings 49 Figure 30 Control connection location diagram Single Module System 98 797608 03A Rev 02 ...

Страница 56: ...DISCONTINUED PRODUCT Installation Drawings 50 Figure 31 Control wiring Single Module System standard wiring 98 797608 01 Rev 03 ...

Страница 57: ...DISCONTINUED PRODUCT Installation Drawings 51 Figure 32 Module control wiring alarm status contacts option 98 797608 04 Rev 05 ...

Страница 58: ...DISCONTINUED PRODUCT Installation Drawings 52 Figure 33 COM PWA remote terminal RS232 option SiteScan option internal modem option 98 797608 07A Rev 02 ...

Страница 59: ...DISCONTINUED PRODUCT Installation Drawings 53 Figure 34 Control wiring customer alarm interface option 98 797608 09 Rev 03 ...

Страница 60: ...DISCONTINUED PRODUCT Installation Drawings 54 Figure 35 Control wiring SNMP interface option 98 797608 11A Rev 02 ...

Страница 61: ...DISCONTINUED PRODUCT Installation Drawings 55 Figure 36 Control wiring remote status panel interface option 98 797608 06 Rev 03 ...

Страница 62: ...DISCONTINUED PRODUCT Installation Drawings 56 Figure 37 Control wiring battery temperature sensor interface 98 797608 10 Rev 04 ...

Страница 63: ...DISCONTINUED PRODUCT Installation Drawings 57 Figure 38 Control wiring maintenance bypass interlock option 98 797608 05 Rev 04 ...

Страница 64: ...DISCONTINUED PRODUCT Installation Drawings 58 Figure 39 Control wiring Maintenance Bypass Cabinet option 98 797608 14 Rev 03 ...

Страница 65: ...DISCONTINUED PRODUCT Installation Drawings 59 Figure 40 Outline drawing single breaker module battery disconnect 175 250A 600VDC circuit breaker 88 797606 17 Rev 05 ...

Страница 66: ...DISCONTINUED PRODUCT Installation Drawings 60 Figure 41 Outline drawing dual breaker module battery disconnect 175 250A 600VDC circuit breaker 88 797616 17 Rev 03 ...

Страница 67: ...DISCONTINUED PRODUCT Installation Drawings 61 Figure 42 Outline drawing single breaker module battery disconnect 300 450 600 800 1000 1200A 88 797616 09 Rev 08 ...

Страница 68: ...DISCONTINUED PRODUCT Installation Drawings 62 Figure 43 Outline drawing dual breaker module battery disconnect 300 450A 88 797616 08 Rev 05 ...

Страница 69: ...DISCONTINUED PRODUCT Installation Drawings 63 Figure 44 Outline drawing remote status panel surface mount 88 791617 01 Rev 05 ...

Страница 70: ...DISCONTINUED PRODUCT Installation Drawings 64 ...

Страница 71: ...les 6 Power cable from module DC bus to battery should be sized for a total maximum 2 0 volt line drop power cable drop plus return cable drop as measured at the module at maximum discharge current 7 Grounding conductors to be sized per NEC 250 122 Neutral conductors to be sized for full capacity per NEC 310 15 b 4 for systems with 4 wire loads and half capacity for systems with 3 wire loads 8 Rec...

Страница 72: ...1483 270 1320 297 1451 125 100 208 No No 122 153 347 434 250 273 27 650 8 1 3100 1406 2900 1315 242 1179 264 1287 125 100 208 Yes No 113 142 347 434 250 271 28 850 8 4 3170 1438 2970 1347 247 1206 270 1318 125 100 208 No Yes 124 156 347 434 250 271 33 750 9 9 3700 1678 3500 1588 288 1408 318 1553 125 100 208 Yes Yes 115 144 347 434 250 271 35 000 10 2 3770 1710 3570 1619 294 1434 325 1585 150 120 ...

Страница 73: ...3270 1483 270 1320 297 1451 125 100 208 No No 152 190 347 434 250 273 25 700 7 5 2900 1315 2700 1225 226 1103 245 1198 125 100 208 Yes No 141 176 347 434 250 273 26 900 7 9 2970 1347 2770 1256 231 1130 252 1229 125 100 208 No Yes 155 193 347 434 250 273 31 700 9 3 3700 1678 3500 1588 288 1408 318 1553 125 100 208 Yes Yes 143 179 347 434 250 273 32 950 9 6 3770 1710 3570 1619 294 1434 325 1585 150 ...

Страница 74: ...1597 3320 1506 274 1339 302 1474 125 100 208 No No 355 444 347 434 250 273 29 700 8 7 Standard 56x33x78 1422x838x1981 SpaceSaver 48x33x78 1219x838x1981 3250 1474 3050 1383 253 1236 277 1354 125 100 208 Yes No 329 449 347 434 250 273 30 900 9 0 3300 1497 3100 1406 257 1255 282 1376 125 100 208 No Yes 359 449 347 434 250 273 33 750 9 9 3650 1656 3450 1565 284 1389 314 1531 125 100 208 Yes Yes 333 41...

Страница 75: ...DISCONTINUED PRODUCT ...

Страница 76: ...ion All names referred to are trademarks or registered trademarks of their respective owners Emerson Network Power The global leader in enabling Business Critical Continuity Business Critical Continuity Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co 2007 Emerson Electric Co Monitoring AC Power Connectivity DC Power Embedded Computin...

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