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Vertiv

|

Liebert

®

PPC

™

User Manual | Rev. 6 | 03/18 |

22

1.3.3

System Grounding

The performance and safety of any power conditioning system depend upon proper grounding.

Figure 14

shows

the typical grounding arrangements for the Liebert PPC.

Equipment grounding

—Grounding is primarily for safety. Correct implementation of grounding also enhances

equipment performance. All power feeders must include equipment grounding means as required by the NEC
and local codes.
An insulated ground conductor is recommended to be run in each feeder conduit. Ground conductors must be
at least the minimum size per NEC Table 250-66. Larger wire sizes may be used for increased system
performance.
If the input power feeder conduit is used as a grounding conductor, adequate electrical continuity must be
maintained at all conduit connections.

Signal reference grid

—If the unit is used to supply power to a computer room or area that is equipped with a

signal reference grid or a grounded raised-floor stringer system, a grounding conductor should be connected
from the system ground bus to the grid or floor system. This conductor should be stranded or braided #8 AWG
or larger, and as short as practical. Less than 3 ft. (1 m) is recommended.

1.3.4

Grounding Electrode Conductor (Units With Transformer)

Required by code

—The Liebert PPC with transformer must be grounded according to the safety practices of

NEC 250-26. A local grounding electrode conductor is recommended in addition to the equipment safety
ground, which is normally run with the input power conductors.

Unit connection

—A terminal is furnished inside the unit for field-connection of the grounding electrode

conductor. (See

Figures 6

,

8

and

10

.)

Electrode connection

—As shown in

Figure 14

, the grounding electrode conductor is run from the unit to the

nearest effectively grounded (in order of preference):

1.

Building steel

2.

Metal water pipe

3.

Other made grounding electrode

Sizing of the grounding electrode conductor is based on the secondary circuit conductors.

Table 7

shows the

minimum recommended grounding electrode conductor according to the NEC.

WARNING

Risk of electrical shock. Can cause equipment damage, improper operation, injury and death.
Isolating bushings must not be used in a metal conduit run. These busings might prevent the system
from being properly grounded.

Table 7

Minimum grounding electrode conductor size (AWG)

kVA

Output Voltage

208V

380V

415V

15

8

8

8

30

8

8

8

50

4

8

8

75

2

6

6

100

0

4

4

125

0

2

2

150

00

2

2

200

00

0

0

225

00

0

0

AWG wire size based on 75°C copper conductors

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Содержание Liebert PPC

Страница 1: ...Liebert PPC Second Generation Power Conditioning and Distribution Cabinet User Manual Three Phase 15 225kVA 50 60Hz ...

Страница 2: ......

Страница 3: ...er 22 1 3 5 Output Power Connections 24 1 3 6 Control Wiring Connections 26 1 3 7 Adapter Board 30 2 0 EQUIPMENT INSPECTION AND STARTUP 31 2 1 Internal Inspection 31 2 2 Startup 31 3 0 INSPECTION AND STARTUP CHECKLIST 33 3 1 Inspection 33 3 2 Startup 34 3 3 Monitoring System Check Out 35 3 4 Equipment Connection Check Out For Units With Distribution Cables 36 4 0 OPERATING INSTRUCTIONS 37 4 1 Star...

Страница 4: ...16 Figure 12 Electrical connection location for 72 pole Square D or 54 pole GE panelboard 44 cabinet top entry exit 17 Figure 13 Typical junction box connections 21 Figure 14 Typical grounding arrangements 23 Figure 15 Typical Liebert PPC equipment arrangement 25 Figure 16 Simplified shutdown circuit 26 Figure 17 Typical control wiring for units without monitoring 27 Figure 18 Typical control wiri...

Страница 5: ...fore installing cables or making connections whether in the junction box or in the unit Equipment inspection and startup should be performed only by trained personnel Lethal voltages are present during startup procedures Electrical safety precautions must be followed throughout inspection and startup Only properly trained and qualified service personnel should perform maintenance on the Liebert PP...

Страница 6: ...d into place after it has been unbolted from the pallet Check size and weight Refer to the cabinet drawings furnished with the unit for size and weight information Typical cabinet dimensions and weights are shown in Figures 1 and 2 Plan the route The route that the unit will follow to its installation area should be planned to ensure that all passages are large enough to accommodate the unit and t...

Страница 7: ... 12 305mm 22 559mm 7 178mm 20 508mm Overall Dimension 18 457mm Unit Base Pedestal Footprint Shaded areas indicate recommended clearance of 42 1067mm at front and one other side for service access Clearance of 6 152mm below unit is recommended for cooling airflow and cable exit Clearance of 18 457mm above unit is recommended for cooling airflow Cutout area for cable exit and cooling airflow 77 1959...

Страница 8: ...9 737 41 1041 Unit kVA Weight lb kg 60 Hz 50 Hz Without Xfmr 15 650 295 700 318 400 182 30 750 340 800 363 400 182 50 898 408 925 420 400 182 75 1115 507 1150 522 400 182 100 1275 579 1400 635 450 204 125 1450 658 1575 715 450 204 150 1789 813 1900 862 700 318 200 2110 959 2300 1043 700 318 225 2353 1070 2450 1111 700 318 Add 50 lb 14kg to 50 thru 125 kVA units in 44 cabinet CABINET DIMENSIONS Foo...

Страница 9: ...nsion data top exit unit Unit kVA No of Panelboards Dimensions in mm A B 15 125 1 32 813 30 762 150 225 1 44 1118 42 1067 Footprint Dimensions CABINET DIMENSIONS Unit kVA Weight lb kg 15 650 295 30 750 340 50 950 432 75 1165 530 100 1325 601 125 1500 680 150 1789 813 200 2110 959 225 2353 1070 ...

Страница 10: ... runs consistent with logical equipment arrangement and allowances for future additions Operating Environment Ambient temperatures of 32 F to 104 F 0 C to 40 C with a relative humidity of 0 to 95 non condensing Bottom Clearance Required for exit of cables conduit and or for cooling air flow This clearance is automatically provided by a raised floor 6 in 150 mm minimum height Figures 1 and 2 show t...

Страница 11: ...8 225 15 350 4 45 18 in 457mm minimum clearance above unit for cooling air flow ADDITIONAL ACCESS ON EITHER SIDE OR THE REAR OF UNIT see Notes 1 and 2 6 in 152 mm minimum clearance below unit for bottom cable exit NOTES 1 Service access is required at the front plus one other side or rear 2 Service access clearance 36 in 914 mm for units up to 150 volts to ground 42 in 1067 mm for units over 150 v...

Страница 12: ...g the welded nut shaft assembly into or out of the pedestal base as required 3 Lock the height by tightening the jam nut against the pedestal base The pedestal may be secured to the floor by means of the four holes in the base Locations of floor pedestals are shown in Figures 1 and 2 Figure 5 Floor pedestal details NOTE Floor pedestals may be reverse assembled for shipping Before installation reas...

Страница 13: ...cal Connections Five conductors 3 phase conductors neutral and ground are furnished with the distribution sidecar for connection to the main unit in the field along with an intercabinet frame ground conductor For Liebert PPC s with transformers the sidecar phase conductors are connected directly to the transformer terminals Phase A wire 412 to X1 Phase B wire 422 to X2 Phase C wire 432 to X3 The s...

Страница 14: ... to safely carry the system s full load current including losses Input feeder conductors should be sized for no more than 2 voltage drop If operation at undervoltage conditions for extended periods of time is desired the input feeders must be oversized Typical conductor size data is shown in Table 2 All connections must comply with the NEC and all other applicable codes For units with a transforme...

Страница 15: ...holes for 3 4 conduit fittings and 7 8 22 2mm holes for 1 2 conduit fittings provided for securing optional distribution cables Ground Connections Distribution Cable Ground s connected to distribution panelboard ground busbar Interconnection Wiring provided by factory NOTES 1 The unit bolts to the main Liebert Precision Power Center See installation manual for instructions 2 Site panel is taken fr...

Страница 16: ...Vertiv Liebert PPC User Manual Rev 6 03 18 12 Figure 7 Electrical connection location for 72 pole Square D or 54 pole GE panelboards 32 cabinet bottom entry exit PPC15100 Rev 0 ...

Страница 17: ... ground conductor See Detail C Main Input Neutral Connection For units without isolation transformer and without main input junction box customer connection of main input neutral conductor See Detail B Detail D Subfeed Circuit Breaker 3 phase Connections Busbars for 2 hole lugs 1 3 4 spacing with ø0 563 hole Connect ground and neutral wires to main ground and neutral busbars Panelboard Main Circui...

Страница 18: ...Vertiv Liebert PPC User Manual Rev 6 03 18 14 Figure 9 Electrical connection location for 72 pole Square D or 54 pole GE panelboard 44 cabinet bottom entry exit PPC15102 Rev 0 ...

Страница 19: ...1mm 6 Places ø0 563 14mm 6 Places 1 25 32mm DETAIL C Ground Busbar 1 75 44mm 1 50 38mm 1 25 32mm 1 75 44mm 1 50 38mm 0 437 sq 11mm 7 Places ø0 563 14mm 8 Places DETAIL B Neutral Busbar Main Input Power Connection For units without main input junction box busbar for 2 hole lugs 1 3 4 spacing with 0 563 dia holes are provided at line side terminals of main input circuit breaker for customer connecti...

Страница 20: ... Main Circuit Breaker Factory Wired Distribution Cable Conduit Connection Cable tray 1 3 32 27 8mm holes for 3 4 conduit fittings and 7 8 22 2mm holes for 1 2 conduit fittings provided for securing optional distribution cables ø0 375 10mm 1 25 32mm 0 437 sq 11mm 6 places ø0 563 14mm 6 places 1 25 32mm Detail C Ground Busbar 1 75 44mm 1 50 38mm 1 25 32mm 1 75 44mm 1 50 38mm 0 437 sq 11mm 7 places ø...

Страница 21: ...Vertiv Liebert PPC User Manual Rev 6 03 18 17 Figure 12 Electrical connection location for 72 pole Square D or 54 pole GE panelboard 44 cabinet top entry exit PPC15122 Rev 0 ...

Страница 22: ...70 480 2 250 kcmil 380V 15 24 30 10 23 30 10 30 47 59 6 46 59 6 50 79 100 2 76 100 3 75 117 150 0 114 150 0 100 157 200 000 152 200 000 125 196 250 0000 190 250 250 kcmil 150 234 295 350 kcmil 228 295 350 kcmil 200 312 400 2 000 304 400 2 000 225 351 432 2 0000 342 432 2 0000 400V 15 23 30 10 23 30 10 30 45 59 6 43 59 6 50 75 100 2 72 90 2 75 112 150 0 108 150 0 100 149 200 000 144 200 000 125 186...

Страница 23: ...en conduit is used adequate electrical continuity must be maintained at conduit connections to enclosures and throughout conduit run 3 Input feeder wire size listed in this table is the minimum feeder size recommended Larger wire size may be required because of voltage drop or supply overcurrent protection device 4 For transformerless units with 3 phase 4W G input feeder larger wire size may be re...

Страница 24: ...ns in the junction box Table 4 Main input junction box with transformer electrical connections Junction Box Size In mm Electrical Connections 27 x 14 x 6 686 x 356 x 152 400A 3 Pole Power Block with 1 2 13 studs on 1 3 4 44mm Centers 750A Ground Busbar with Two Sets of 3 8 16 Studs on 1 3 4 44mm Centers 35 x 22 x 6 889 x 559 x 152 750A Phase Busbars with 1 2 13 Studs on 1 3 4 44mm Centers 750A Gro...

Страница 25: ...ctions Building interface relay LOW VOLTAGE CONTROL JUNCTION BOX MAIN INPUT JUNCTION BOX Customer input power connection 3 Phase 3W G for units with transformer 3 Phase 4W G for units without transformer Factory supplied input cable assembly Factory supplied low voltage control cable ...

Страница 26: ...s practical Less than 3 ft 1 m is recommended 1 3 4 Grounding Electrode Conductor Units With Transformer Required by code The Liebert PPC with transformer must be grounded according to the safety practices of NEC 250 26 A local grounding electrode conductor is recommended in addition to the equipment safety ground which is normally run with the input power conductors Unit connection A terminal is ...

Страница 27: ... at both ends as acceptable by local and other applicable codes Figure 14 Typical grounding arrangements Local grounding electrode conductor per NEC 250 26 Service Entrance Liebert PPC without transformer Service entrance grounding electrode system Signal reference grid if used TYPICAL LIEBERT PPC WITHOUT TRANSFORMER GROUNDING ARRANGEMENT Input J Box if used TYPICAL LIEBERT PPC WITH TRANSFORMER GR...

Страница 28: ...another power conditioner The high partial load efficiency of the unit permits such sizing without imposing an energy use penalty during initial operation Keep the load balanced Balancing of loads is good design practice on any 3 phase system Accordingly each distribution panel is load balanced at the factory based on output branch circuit breaker sizes All additions to the system should be arrang...

Страница 29: ...mer Main input junction box and cable Low voltage junction box and cable Flexible distribution cables per customer specifications Building interface and alarm connections not by Vertiv Optional devices refer to the specification sheet for options supplied Main input power to unit not by Vertiv 3 phase 3 wire plus ground for units with transformer 3 phase 4 wire plus ground for units without transf...

Страница 30: ...t down all Liebert PPC s The low voltage control circuits of all standard Liebert PPC systems are designed to meet this requirement External control wiring connections for remote shutdown alarm and or monitoring are made to the low voltage junction box if used or to the low voltage control terminal strip located inside the unit Control wiring connections vary with the type of monitoring system fur...

Страница 31: ...elay NOTES 1 Building Interface Relay can be used for remote shutdown or alarm Relay is energized during normal operation DPDT contacts rated 1 4 HP at 120VAC 10A at 28VDC or 240VAC 2 Other N O REPO devices may be wired in parallel to the N O REPO contacts Other N C REPO devices may be wired in series to the N C REPO contacts Multiple REPO lamps and other 24VDC loads may be wired in parallel to th...

Страница 32: ...osed N C REPO is used FPC15550 Rev 1 NOTES 1 All switching devices are to be suitable for switching low current 24VDC Minimum recommended wire size is 18AWG stranded copper with 300V insulation All wiring and devices are field supplied except where noted See installation manual for detailed installation procedures 2 Low voltage terminal is located in low voltage control junction box 3 The total lo...

Страница 33: ...INTELLISLOT ONLY S1 9 7 6 4 1 3 B A LDM13009 Rev 1 NOTES 1 All switching devices are to be suitable for switching low current 24VDC Minimum recommended wire size is 18AWG stranded copper with 300V insulation All wiring and devices are field supplied except where noted See installation manual for detailed installation procedures 2 The total load on the 24VDC supply both N O and N C REPO circuits mu...

Страница 34: ...orner of the unit A field selectable switch S1 on the AB allows the VPMP to be set up for either Manual or Auto restart The factory default setting is Manual Manual Restart allows for an orderly supervised startup after power failure The control circuit automatically energizes the shunt trip mechanism of the main input breaker upon sensing output voltage failure Auto Restart deactivates the Manual...

Страница 35: ...0 INSPECTION AND STARTUP CHECKLIST when installing and starting up the Liebert PPC Initial system startup A qualified electrician should be employed to perform the equipment inspection and startup Liebert system startup may be arranged by calling your local Liebert sales representative or Vertiv Services In the USA call 800 543 2378 Warranty effectivity A copy of the appropriate checklist furnishe...

Страница 36: ...M10 120 13 6 240 27 1 1 2 M12 240 27 1 480 54 2 Input and Output Breakers Up to 150A 80 9 0 160 18 0 175 500A 120 13 6 240 27 1 Table 9 Panelboard main circuit breaker torque specifications Connection Torque lb in N m Busbar to Breaker 240 27 1 Table 10 Branch circuit breaker torque specifications Breaker Size Torque lb in N m Up to 30A 20 4 0 40 to 100A 20 5 1 Table 11 Terminal block compression ...

Страница 37: ...e if necessary ___ 9 Check transformer mounting bolts for tightness Retorque if necessary ___ 10 Remove any foreign objects from the components or the interior area of the unit Make sure air passages on transformers are clear and free of debris ___ 11 Check that the intake and exhaust air screens are clean and free of obstructions ___ 12 Replace side panels leaving access to circuit breakers for t...

Страница 38: ...____________ ___ 11 Turn ON the main input breaker wait one minute If breaker trips Off check for wiring errors including control connections Contact Vertiv Services or the location factory representative for assistance ___ 12 Check the phase rotation at the line side terminals top of the panelboard main breaker s and any subfeed output circuit breaker s The rotation should be A B C left to right ...

Страница 39: ...put and output circuit breaker Steps 10 and 13 ___ 19 CENTRALIZED MONITOR If the unit is connected to a Centralized Monitoring System Turn the unit and Centralized Monitoring System On Verify proper communication to the monitor system operation ___ 20 CONTROL VOLTAGE a Obtain access to the low voltage terminals in the Low Voltage Junction Box if used or in the low voltage control section inside un...

Страница 40: ...ipment operates properly ___ 30 Replace all unit panels After performing the inspection and startup procedure described in 3 0 INSPECTION AND STARTUP CHECKLIST in this manual complete the Startup and Inspection form furnished with the unit sign the completed form and return it to Liebert Corporation 1050 Dearborn Drive P O Box 29186 Columbus Ohio 43229 USA WARNING Risk of electric shock Can cause ...

Страница 41: ...ch piece of load equipment or at the Liebert PPC s output distribution circuit breaker panels located behind the unit s front door Turn Off all unit output breakers then turn Off the unit s main input circuit breaker To remove all power from the unit turn Off the building power to the unit s input breaker or junction box 4 1 3 Normal System Turn ON Make certain all unit circuit breakers are in the...

Страница 42: ...n Emergency Power Off EPO Push Button Pressing the EPO button shunt trips the input circuit breaker to turn the unit Off LCD Note used Navigation keys soft function keys F1 through F4 and Help Not used If an overtemperature condition occurs when the transformer temperature exceeds 356 F 180 C it should be investigated and corrected Possible causes include transformer overload excessive non linear ...

Страница 43: ... data Navigation keys soft function keys F1 through F4 and Help F1 selects the next Main Breaker or Next Subfeed F2 is the Sequence key It selects the next set of items at the current level or the next item on a list F3 can select Subfeed if supplied and monitored at the top level or can select a menu item at a lower level F4 can select Branch a Back function at lower levels Pressing the Back key ...

Страница 44: ...ct for remote alarm status The contacts are rated at 24VAC 1A The contacts change state upon occurrence of any alarm including warnings and resets when the alarm is cleared Summary alarm contacts are located on the adapter board The adapter board is on top of the monitoring enclosure See Figure 19 for details Communication Liebert IntelliSlot cards provide customer connections to a Building Manage...

Страница 45: ...larm condition still exists the alarm will be annunciated again Emergency Power Off EPO Push Button Pressing the EPO button shunt trips the input circuit breaker to turn the unit Off LCD Displays power parameters and alarm data Navigation keys soft function keys F1 through F4 and Help F1 selects the next Main Breaker F2 is the Sequence key It selects the next set of items at the current level or t...

Страница 46: ...tacts are rated at 24VAC 1A The contacts change state upon occurrence of any alarm including warnings and reset when the alarm is cleared Summary alarm contacts are located on the adapter board The adapter board is on top of the monitoring enclosure See Figure 19 for details Communication Liebert IntelliSlot cards provide customer connections to a Building Management System BMS or Remote Monitorin...

Страница 47: ...exists the alarm will be annunciated again Emergency Power Off EPO Push Button Pressing the EPO button shunt trips the input circuit breaker to turn the unit Off LCD Displays power parameters and alarm data Navigation keys soft function keys F1 through F4 and Help F1 selects the next Main Breaker Next Subfeed or Next Branch F2 is the Sequence key It selects the next set of items at the current lev...

Страница 48: ...remote alarm status The contacts are rated at 24VAC 1A The contacts change state upon occurrence of any alarm including warnings and resets when the alarm is cleared Summary alarm contacts are located on the adapter board The adapter board is on top of the monitoring enclosure See Figure 19 for details Communication Liebert IntelliSlot cards provide customer connections to a Building Management Sy...

Страница 49: ...r the first 24 hours 30 days and 6 months of operation should help determine a pattern for the inspection schedule Electrical connections and component mountings should be inspected after the first 24 hours 30 days and 6 months of operation Inspections should be conducted annually thereafter Ventilation openings and grilles should be inspected and cleaned every six months to one year A complete in...

Страница 50: ...Vertiv Liebert PPC User Manual Rev 6 03 18 46 NOTES ...

Страница 51: ... 800 543 2378 Outside North America 614 841 6598 LOCATIONS United States 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 Europe Via Leonardo Da Vinci 8 Zona Industriale Tognana 35028 Piove Di Sacco PD Italy 39 049 9719 111 Fax 39 049 5841 257 Asia 29 F The Orient Square Building F Ortigas Jr Road Ortigas Center Pasig City 1605 Philippines 63 2 687 6615 Fax 63 2 730 9572 ...

Страница 52: ...mes and logos referred to are trade names trademarks or registered trademarks of their respective owners While every precaution has been taken to ensure accuracy and completeness herein Vertiv Co assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions Specifications are subject to change without notice SL 20140_REV6_03...

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