Best Power Unity I Three Phase Installation Manual
Contents
1. EET masi sss sata ext bo 1 pes E Ar lo i iv i EPO SHUNT TRIP 10 DC SEE NOTE 3 l DISCONNECT 1 i OX jt f PRECHARGE luem c cumin i DISCHARGE NOTE 1 See Table 1 in Section 102 for recommended input overcurrent protection NOTE 2 See Table 2 in Section 102 for recommended output overcurrent protection NOTE 3 The customer must provide overcurrent protection and UPS input AC disconnect means NOTE 4 a Refer to any instructions provided with the DC disconnect DCD and pre charge discharge box b The pre charge discharge box must be located less than 10 feet 3048 mm from the DC disconnect u Es ADDITIONAL NOTES A qualified electrician must install the UPS according to all applicable codes e Power and control wires must be in separate conduits 11 UT3120 UT3160 and UT3220 Planning and Installation Manual Figure 5 UT3120 UT3220 Installation Wiring Diagram Typical Installation With External Maintenance Bypass Cabinet MAINS INPUT 3 PHASE 4 WIRE amp GROUND _ 4 A B C CLOCKWISE NOTE 4 ROTATION i UNIT WILL NOT OPERATE I IF PHASE ROTATION IS 1 T INCOR i TUTTA IL E i L1 1213 N G cs es IXo01 2 3 4 BYPASS STATIC SWITCH MAIN STATIC SWITCH i 408V EXT BATTERY2. i SUPPLY it Z To NOTE 1 Size the mains input overcurrent protection device per applicable codes See the table below for mains input voltage and current ratings Mains Input UPS Model VAC Maximum Amps UT3120 480 260 UT3160 480 347 UT3220 480 477 NOTE 2 a Refer to any instructions provided with the DC disconnect DCD and pre charge discharge box b The pre charge discharge box must be located less than 10 feet 3048 mm from the DC disconnect 12 OUTPUT TO 3 PHASE LOADS 4 WIRE amp GROUND A B C CLOCKWISE TEN ROTATION 4220 ar p UOB 14 c La I i l irs imd LEE S L1 L2 3 Mal I A 3 3 4 78 2 X009 X012 EXTERNAL CONN BOARD GND INVERTER UE UT3120 UT3220 SERIES UPS GND ji mns mem d E iim Tu S YI l a top To 22 EPO SHUNT TRIP TB1 e eis DC 109 d DISCONNECT bes B ire UE mua QE DE pol l DISCHARGE ADDITIONAL NOTES A qualified electrician must install the UPS according to all applicable codes Power and control wires must be in separate conduits f you do not have BEST supplied maintenance bypass cabinet MBC you must provide overcurrent protection and UPS input AC disconnect means 3120 UT3160 and UT3220 Planning and Installation Manual Figure 6 External Connection B
3. NORMAL OPERATION 7 N 07 797 gt COMMON FAULT Q OQ BYPASS VOLTAGE OUTSIDE LIMITS 7 N BATTERY OPERATION T aT NOT USED Q 15 Description Minimum Maximum lene ues eq VAT UNE Contact voltage AC 6V 250 V X003 1 Contact current AC 50mA 8A 5 BATTERY CHARGING FAILURE Contact voltage and 6V 50mA 250V 0 3A EN current DC 6V 8A M Resistive load xe OVERLOAD X005 1 UT3120 UT3160 and UT3220 Planning and Installation Manual 202 Installing the External Batteries and DC Disconnect DCD External batteries must be installed and connected to the UPS by a qualified service person who is familiar with UPS battery installations and applicable building and electrical codes The qualified service person should read this entire section before the UPS and batteries arrive A DANGER Full voltage and current are always present at the battery terminals The batteries used in this system can produce dangerous voltages extremely high currents and a risk of electric shock They may cause severe injury if the terminals are shorted together or to ground earth You must be extremely careful to avoid electric shock and burns caused by contacting battery terminals or shorting terminals during battery installation Do not touch uninsulated battery terminals A qualified service person who is familiar with battery systems and required prec
4. The UPS maintenance bypass breaker MBB should be ON The DC disconnect DCD should be OFF Switch the UPS input breaker UIB ON The UPS display should show System type xxxV and an audible alarm should sound Within 20 seconds the display should show Stand by Turn the pre charge discharge switch to the pre charge position and hold it until the LED turns off Switch the DC disconnect DCD ON Press the green button located inside the UPS front door The UPS display should show Normal operation load power xx Program the UPS into static bypass operation a Press to access the user parameters b Press the or key until the display shows Bypass operation OFF c Press 2 to turn bypass operation on The display should show Bypass Operation Switch the UPS output breaker UOB ON Switch the maintenance bypass breaker MBB OFF 10 Program the unit to normal operation a Press 9 to access the user parameters b Press the or key until the UPS display shows Bypass operation ON c Press to switch static bypass operation off The UPS display should show Normal operation load power xx 25 UT3120 UT3160 and UT3220 Planning and Installation Manual Section 700 Glossary of Terms and Abbreviations Section 701 contains a glossary of terms Section 702 contains a list of abbreviations 701 Glossary of Terms Ampere Amp
5. phone BEST s Technical Support Center for assistance CAUTION Before you switch the maintenance bypass breaker MBB use the steps below to check for correct voltage phasing and system operating mode 12 Program the unit into static bypass operation a Press m to access the user parameters b Press the Or key until the display shows Bypass operation OFF c Press L to turn static bypass operation on The display should show Bypass Operation 13 Switch the UPS output breaker UOB 21 14 15 16 17 18 UT3120 UT3160 and UT3220 Planning and Installation Manual At the maintenance bypass cabinet MBC make sure that the UPS output voltage is approximately the same as the AC line input voltage there may be slight differences Use a true RMS voltmeter to measure the phase to neutral voltage at the MBC AC line input and the MBC output MBC AC Line Input a Ll to neutral VAC L2 to neutral VAC c L3to neutral VAC Output LI to neutral VAC L2 to neutral VAC L3 to neutral VAC The voltages in the first column should be similar to the voltages in the second column If the voltages are more than 10 volts apart for 208 V nominal or 25 volts apart for 480 V nominal check the connections and correct any wiring problems before continuing At the maintenance bypass cabinet MBC make sure the UPS output voltage and AC line input voltage are in phase To
6. 125 125 125 Recommended overcurrent protection Amps 200 250 350 UPS module AC output wiring terminations Four bus bars L1 L2 L3 N Up to three wires per bus bar M12 x 30 hardware provided Lug required Notes for Tables 1 and 2 1 For units with external bypass see Figure 5 in Section 201 2 For UPS module only UPS input breaker 3 MI2 x 30 hardware is 12 mm 0 47 in diameter For detail of bus bars see Figure 3 in Section 201 4 10096 imbalance provided output current rating is not exceeded UT3120 UT3160 and UT3220 Planning and Installation Manual Table 3 DC Input Battery Specifications UT3120 UT3160 UT3220 Nominal DC current Amps 320 425 580 Nominal DC voltage 408 408 408 Nominal number of cells 204 204 204 Factory set float charge voltage 467 467 467 Charger current limit Amps 30 45 55 Inverter efficiency 10096 load 93 94 94 7596 load 93 94 94 50 load 91 91 92 25 load 89 90 90 UPS module DC wiring terminations Two bus bars Up to three wires per bus bar M12 x 30 hardware provided Lug required Notes for Table 3 1 Adjust the float charge voltage setting per the battery manufacturer s recommendations 2 Programmable to lower level 3 MI2 x 30 hardware is 12 mm 0 47 in diameter For detail of bus bars see Figure 3 in Section 201 Table 4 General Specifications Noise attenuation dB UT3120
7. P MM 23 500 Shutdown bte CO RE HAE RA CREER bU ER Ho Ede ad 24 600 Startup from Maintenance BypaSS dues e Rh RE REN C ERKeRE SERERE E 25 700 Glossary of Terms and Abbreviations 26 hb RERO RP REPRE C RR 26 702 rcu i SOD EA 26 UT3120 UT3160 and UT3220 Planning and Installation Manual List of Tables and Figures Tables I AC IBDULSDSCIHCHBMONS ss p ehe pEvE RS EFE 3 2 AC Output sg cp eats chee eee eee ene DREW fs 3 gt DC Input Ballery Specifications PRO Ka EROS E 4 General Specifi ations iesire ssa ees Ko ir bea Rec RR Kd KIET Ea EE e Kd E be E 4 Figures 1 Footprint of the UT3120 UT3160 UT3220 with Conduit Box Top View 2 2 Front View of the UT3120 UT3160 UT3220 Covers Removed 9 2 UPS Wiring Terminations 10 4 UT3120 UT3220 Installation Wiring Diagram Typical Installation without External Maintenance Bypass Cabinet 13 5 UT3120 UT3220 Installation Wiring Diagram Typical Installation with External Maintenance Bypass Cabinet 12 6 External Connection 13 7 Communication Interface Board Option 14 5 Relay aee h aka EES eh ded EE RUE Ed 15 UT3120 UT3160 and UT3220 Planning and Installat
8. UT3160 UT3220 differential mode 60 80 60 80 60 80 common mode 40 80 40 80 40 80 Typical heat dissipation kW BTU At full rated load normal operation 5 00 17065 6 67 22753 9 17 31286 At full rated load economy mode 3 71 12667 4 95 16889 6 80 23222 At 0 8 PF load normal operation 4 00 13652 5 33 18203 7 33 25029 At 0 8 PF load economy mode 2 97 10133 3 96 13511 5 44 18578 Efficiency AC to AC normal operation 96 96 96 economy mode 97 97 97 Humidity non condensing max 95 95 95 Ambient UPS battery temp F C 32 104 0 40 32 104 0 40 32 104 0 40 Ideal UPS battery temp F C 77 25 77 25 77 25 Air flow m hr 1767 3000 1767 3000 1767 3000 Audible noise typical dBa 65 65 65 UPS dimensions with conduit connection kit HxWxD inches mm 74 8 x 63 x 31 5 1900 x 1600 x 800 774 8 x 63 x 31 5 1900 x 1600 x 800 774 8 x 63 x 31 5 1900 x 1600 x 800 connection kit lbs sq inch kPa UPS weight with conduit connection 3729 1691 4831 2191 5403 2492 kit lbs kg Floor loading UPS with conduit 10 69 73 72 13 85 95 51 15 75 108 60 Notes for Table 4 1 120 dB with optional isolation transformer UT3120 UT3160 and UT3220 Planning and Installation Manual 103 Receiving and Moving the UPS QWARNING The UPS and related equipment are
9. do this measure the AC voltage between the following points at the MBC AC line input and the MBC output MBC AC Line Input a Llinput to b L2input to c L3input to Output Ll output VAC L2 output VAC L3 output VAC These readings must not be more than 10 VAC If they are call BEST s Technical Support Center or your local BEST office At the maintenance bypass cabinet MBC measure the following a Ninputto Ground b Noutput to Ground c Ninputto N output VAC VAC VAC N input to N output should not exceed N input to Ground If it does call BEST s Technical Support Center Check for proper voltages at the maintenance bypass cabinet MBC load output terminals and the load distribution panel s MBC Load Output a LI to neutral VAC L2 to neutral VAC c L3to neutral VAC Load Panel Input LI to neutral VAC L2 to neutral VAC L3 to neutral VAC Switch the maintenance bypass breaker MBB ON 22 3120 UT3160 and UT3220 Planning and Installation Manual 19 Switch the UPS output breaker UOB OFF 20 Recheck for proper voltages at the MBC load output terminals and load distribution panel s MBC Load Output Load Panel Input a Llto neutral VAC LI to neutral VAC b L2to neutral VAC L2 to neutral VAC c L3to neutral VAC L3 to neutral VAC 2 Switch the UPS output breaker UOB 22 Switch the maintenance bypass breaker MBB OFF 23 Program the UPS to norm
10. of the strings The voltage should measure less than 5 volts If it measures greater than 5 volts correct any wiring errors before you continue Connect the positive cables between battery strings as shown in the battery installation diagram provided with the batteries 3 Install the DC disconnect DCD and pre charge discharge switch Refer to Figure 4 or 5 and to any instructions provided with the DCD and pre charge discharge switch 4 Connect the external batteries to the UPS Connect the positive cable s to the UPS first Install ring connectors for 12 mm bolts as required To prevent short circuits insulate the UPS end of the negative cable s Do not connect the negative cables to the UPS yet Connect the positive cable s to the battery system and tighten to the proper torque specifications Connect the negative cable s to the battery system and tighten to the proper torque specifications 18 UT3120 UT3160 and UT3220 Planning and Installation Manual Check the DC voltage a Connect the DC fuse s as shown in the battery installation diagram provided with the batteries Verify proper voltage 408 VDC nominal and polarity at the battery pack b Turn the DC disconnect DCD ON c Meter for proper nominal DC voltage at the UPS end of the cables Make sure the polarity agrees with the markings on the UPS battery input terminals d After checking the DC voltage turn the DC disc
11. very heavy To prevent personal injury or equipment damage use extreme care when handling and transporting the UPS cabinet and related equipment 1 While the UPS system is still on the truck inspect the equipment and shipping container s for any signs of damage Do not install the system if damage is apparent If damage has occurred notify BEST as soon as possible 2 Compare the shipment with the bill of lading Report any missing items to the carrier and to BEST immediately 3 Remove the screws on the bottom part of the packaging side plates 4 Lift the main package up and off the unit and remove the packing materials from the unit 5 Check that the label inside the UPS front door corresponds to the system ordered especially the input output voltages 6 Unbolt the unit from the pallet 7 Remove the unit from the pallet with a fork lift 8 Use a fork lift or hand truck to transport the unit to the installation site or storage site Study the footprint to decide how you will move the UPS through doorways and into position 9 Install the separately shipped conduit connection kit See the conduit connection kit for installation instructions UT3120 UT3160 and UT3220 Planning and Installation Manual 104 Storing the UPS and Batteries You can store the UNITY I UPS between 4 and 104 F 20 and 40 C However BEST recommends that the unit and batteries be stored between 59 and 77 F 15 and 25 C This temperature
12. A unit of electric current equivalent to a steady current produced by one volt applied across a resistance of one ohm British thermal unit BTU A unit of heat energy equal to the heat needed to raise the temperature of one pound of air free water from 60 to 61 F at a constant pressure of one standard atmosphere Decibel adjusted dBa A unit used to show the relationship between an acoustic noise source and a reference sound power level of 85 dBm Ground Earth A conducting connection whether intentional or accidental by which an electric circuit or equipment is connected to earth or to some conducting body that serves in place of earth Load tolerance symmetrical Equally balanced loads on a three phase system Load tolerance asymmetrical Unbalanced loads on a three phase system Mains The conductors extending from the service switch generator bus or converter bus to the main distribution center in interior wiring Synonymous with power source input line Noise attenuation differential mode The ability to attenuate noise line to line Noise attenuation common mode The ability to attenuate noise line to ground and neutral to ground Nominal voltage The voltage at which a device operates under ideal conditions Power factor PF The ratio of the true real power to the apparent power root means square RMS voltage times RMS current of an alternating current circuit Protective earth PE Synonymous w
13. UNITY I Three Phase Uninterruptible Power Systems UT3120 UT3160 UT3220 60 Hz Planning and Installation Manual mmm I LTM 0356A U Copyright 1995 Best Power Technology Inc C 855 UT3120 UT3160 and UT3220 Planning and Installation Manual IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for your UNITY I UPS The installation and use of this product must comply with all national federal state municipal or local codes that apply If you need help please call BEST s Technical Support Center at 1 800 356 5737 U S A or Canada elsewhere call your local BEST office WARNING UPS units contain hazardous AC and DC voltages A qualified electrician must install the UPS AC line service and external batteries The electrician must install AC line according to local and national codes and must be familiar with batteries and battery installation Before installing maintaining or servicing the UPS shut off the UPS and disconnect all sources of AC and DC power Whenever AC and or DC voltage is applied there will be AC voltage at the UPS output this is true because the UPS can supply output power from mains or from its batteries To avoid equipment damage or personal injury always assume that there may be voltage at the UPS output TEST BEFORE TOUCHING To reduce the risk of fire or electric shock install the UPS and external
14. al JA ANGER 6 Do not connect the battery terminal to ground earth If any battery terminal is inadvertently grounded remove the source of the ground Contacting any part of a grounded battery can cause a risk of electric shock To reduce the risk of fire or electric shock install the batteries in a temperature and humidity controlled indoor area free of contaminants Battery cabinet chassis ground earth must be connected to the UPS chassis ground earth If you use conduit this ground conductor must be routed in the same conduit as the battery conductors Where conductors may be exposed to physical damage protect the conductors in accordance with all applicable codes If you are replacing batteries or repairing battery connections shut off the UPS and remove both AC and DC power Follow these guidelines when installing the batteries Refer to any instructions provided with the batteries Refer to any instructions provided with the DC disconnect DCD and pre charge discharge switch External batteries require a fused disconnect or a DC circuit breaker There should be a disconnecting means for each battery string The external battery fuse protects the battery cables Size the cables based on the overcurrent protection device The battery cables must be sized for a total maximum voltage drop of 2 0 VDC at the rated DC current Wherever conductors may be exposed to physical damage protect the conductors in a
15. al operation a Press m to access the user parameters b Press the or key until the UPS display shows Bypass operation ON c Press to turn static bypass operation off The UPS display should show Normal Operation load power xx The system is now ready to use As the last step of the installation BEST recommends that you clear the events log See Section 400 Clearing the Events Log Section 400 Clearing the Events Log The events log contains the 250 most recent UPS events including alarms To clear the events log follow the steps below 1 Simultaneously press D gt J The display should show Key in password 2 Using the key pad enter 920701 The display should show Logging stack is reset The events log is now cleared If the unit will not be used immediately go to Section 500 Shutdown Procedure 23 UT3120 UT3160 and UT3220 Planning and Installation Manual Section 500 Shutdown Procedure a WARNING After shutting down the unit wait at least five minutes before removing any access panels or covers Access panels should be removed by qualified service personnel only After shutting down the UPS there may still be high voltage inside the unit TEST BEFORE TOUCHING Before continuing read the warnings on the inside front cover of this manual This section tells how to shut down the UPS from normal operation mode This procedure is for unit with a BEST maintenance b
16. autions must install and service the batteries The installation must conform to national and local codes Keep unauthorized personnel away from batteries The qualified service person must take these precautions 1 Wear protective clothing such as rubber gloves and boots and protective eye wear Batteries contain caustic acids and toxic materials and can rupture or leak if mistreated Remove rings and metal wristwatches or other metal objects and jewelry Do not carry metal objects in your pockets where the objects can fall into the battery cabinet Tools must have insulated handles and must be insulated so that they will not short battery terminals Do not allow a tool to short between individual or separate battery terminals or to the cabinet or rack Do not lay tools or metal parts on top of the batteries and do not lay them where they could fall onto the batteries or into the cabinet Install the batteries as shown on the drawing provided with the batteries When connecting cables never allow a cable to short across a battery s terminals the string of batteries or to the cabinet or rack Align the cables on the battery terminals so that the cable lug will not contact any part of the cabinet or rack even if the battery is moved Keep the cable away from any sharp metal edges Install the battery cables so they cannot be pinched by the UPS or battery cabinet doors 16 UT3120 UT3160 and UT3220 Planning and Installation Manu
17. batteries in a temperature and humidity controlled indoor area free of conductive contaminants UPS batteries are high current sources Shorting battery terminals or DC terminal strips can cause severe arcing equipment damage and injury A short circuit can cause a battery to explode Always wear protective clothing and eye protection and use insulated tools when working near batteries acy This unit contains components that are sensitive to electrostatic discharge ESD If you do not follow proper ESD procedures you may cause severe damage to electronic components Best Power Technology Incorporated reserves the right to change specifications without prior notice UT3120 UT3160 and UT3220 Planning and Installation Manual Table of Contents Listar Taples and PEU Les b n redo OU bd EROR E dE ER ed EVER Ed ii 100 IHODUCUOU 1 IBI UPS Footprint dO ERR DAC m bc RA ER 2 3 103 Receiving and Moving the UPS eb RE E Rex REA ERR REA 5 104 Storing the UPS and Batteries E D ERO RE REIS 6 105 Finding a Location ftor TUS 6 106 Technical 7 200 ovest ERREUR EY rV EE SEC EN RES 7 201 Installing the Maintenance Bypass Cabinet and UPS 8 202 Installing the External Batteries and DC Disconnect DCD 16 300 Initial Startup and Phase Check eR ob Ea x EE RE 20 400 Clearing the Events
18. ccordance with any applicable codes This includes battery cables between the UPS and the battery system and cables between battery cabinets or racks BEST recommends routing battery cables through flexible conduit Install flexible conduit for battery cables according to local or national code The battery system ground earth must be connected to the UPS chassis ground earth This ground conductor must be routed with the battery cables 17 UT3120 UT3160 and UT3220 Planning and Installation Manual Clean the cables and battery terminals before making the battery connections Apply a thin coating of conductive grease before making the battery connections or apply petroleum jelly to the entire connection after it has been made Torque battery connections to the battery manufacturer s specifications Follow the steps below and any instructions provided with the battery system 1 Connect the cables between batteries a b In each battery string connect the cables between batteries as shown in the battery installation diagram provided with the batteries Meter the positive and negative terminal on each battery string to verify proper nominal voltage and polarity 2 Connect the battery cables between battery strings a Connect the negative cables between battery strings as shown in the battery installation diagram provided with the batteries Meter the DC voltage between the positive terminals
19. ck of the unit B 2 0 50 Cable entry from bottom only C 26 6 675 D 63 0 1600 Conduit connection box shipped separately E 3 9 100 F 29 5 750 G 31 5 800 UT3120 UT3160 and UT3220 Planning and Installation Manual 102 Specifications Tables 1 5 contain specifications for UPS models UT3120 UT3220 Table 1 AC Input Specifications UT3120 UT3160 UT3220 Voltage 3 x 480Y 277 3 x 480Y 277 3 x 480Y 277 Rated input current Amps 190 253 348 Mains tolerance programmable 15 10 15 10 15 10 Bypass tolerance programmable 10 10 10 Frequency Hz 60 6 60 6 60 6 Current distortion THD 0 5 0 5 0 5 Recommended overcurrent protection Amps 250 350 450 UPS module AC input wiring terminations Four bus bars L1 L2 L3 N Up to three wires per bus bar M12 x 30 hardware provided Lug required Table 2 AC Output Specifications UT3120 UT3160 UT3220 Voltage 480Y 277 480 277 480 277 Rated output current Amps 144 193 265 Tolerance 96 symmetrical load 1 1 asymmetrical load 3 3 3 load step 0 100 5 5 5 Distortion linear load 0 3 0 3 0 3 Frequency Hz mains synchronized 60 6 60 6 60 6 free running 60 0 1 60 0 1 60 0 1 Overload capacity mains operation minute 250 250 250 10 minutes 150 150 150 Overload capacity 96 battery operation minute 150 150 150 10 minutes
20. diagrams provided with the UPS Figures 4 and 5 show typical installations Your installation may differ See Figure 2 for a front view of the UPS with the covers removed See Figure 3 for a view of the UPS module wiring terminations See Figure 6 for information on the external connection board See Figure 7 for information on the optional communication interface board See Figure 8 for information on the optional relay board UT3120 UT3160 and UT3220 Planning and Installation Manual Figure 2 Front View of UT3120 UT3160 UT3220 Covers Removed ON OFF SWITCH CONTROLLER BOARD INTERFACE BOARD PAOPTIONAL D th HE J PSU2 BOARD 1 PSU BOARD A EXTERNAL CONNECTION _ gt F RFI FUSE BOARDS BOARD IN RELAY 4 HEIE OPTIONAL I a FUSE BOARD COMMUNICATION GO d INTERFACE BOARD i E E 11 BATTERY mi LS at ia CONNECTIONS X003 OUTPUT P MAINS X004 INPUT MAINS X001 UT3120 UT3160 and UT3220 Planning and Installation Manual Figure 3 UPS Wiring Terminat
21. en you disconnect the batteries 19 UT3120 UT3160 and UT3220 Planning and Installation Manual Dispose of Batteries Properly For assistance call BEST s Technical Support Center at 1 800 356 5737 U S A or Canada or call your local BEST office WARNING Do not dispose of batteries in a fire because the batteries could explode Do not open or mutilate batteries Released electrolyte is harmful to the skin and eyes and may be toxic Batteries contain lead Many state and local governments have regulations about disposing of used batteries Dispose of batteries properly For assistance call BEST s Technical Support at 1 800 356 5737 or call your local BEST office Section 300 Initial Startup and Phase Check WARNING Some units have been programmed at the factory for autostart If programmed for autostart the unit will turn on any time mains AC line is applied after a 60 second delay For more information or to change this feature see the user manual Before continuing read the warnings on the inside front cover of this manual After installing the unit use this section to perform the initial startup and the phase check for the maintenance bypass cabinet MBC The steps in this section are for a unit with a BEST supplied maintenance bypass cabinet MBC Follow this Procedure Exactly No Load Should Be Applied 1 Make sure that all AC and DC power is off 2 Switch the maintenance bypas
22. ion Manual Section 100 Introduction An uninterruptible power system UPS protects sensitive equipment against unacceptable disturbances from the mains AC line supply The UNITY I three phase UPS has the capacity to serve a wide variety of electrical equipment from mainframe computers to enterprise wide EDP installations to production lines The UNITY I three phase UPS provides true on line single conversion technology and harmonics isolation Only a qualified electrician should install this unit The planning and installation manual gives the electrician guidelines for installation wiring external battery installation UPS startup procedures phase check for the maintenance bypass cabinet UPS shutdown procedures If you need assistance please have the UPS model number and serial number available and call BEST s Technical Support Center at 1 800 356 5737 U S A or Canada or call your local BEST office UT3120 UT3160 and UT3220 Planning and Installation Manual 101 UPS Footprint Figure 1 shows the UPS footprint Figure 1 Footprint of the UT3120 UT3160 UT3220 with Conduit Box Top View CONDUIT CONNECTION BOX CABLE ENTRY gt Br gt lt C gt B lt Inches Millimeters For service clearance and air flow allow a minimum of 3 feet A 283 720 914 mm at the front 3 feet 914 mm at the top and 6 inches i 150 mm at the ba
23. ions PLEXIGLASS SHIELD MAINS INPUT X001 12 34 L1 L2 L3 N AC OUTPUT X004 1234 L1 L2 L3 N BATTERY X003 1 2 I TERMINALS INPUT AND DC OUTPUT L1 L2 L3 lt og ms opm 20 t 7 7 35 65 60 75 115 130 145 160 O 120 80 ll x Q B z i PE L mM dcc v 10 95 lt 95 NOTES All dimensions are in millimeters All holes are 13 mm 0 51 in diameter M12 x 30 hardware is provided 10 Figure 4 MAINS INPUT 3 PHASE IRE amp GROUND UT3120 UT3160 and UT3220 Planning and Installation Manual UT3120 UT3220 Installation Wiring Diagram Typical Installation Without External Maintenance Bypass Cabinet OUTPUT TO 3 PHASE LOADS 4WIRE amp GROUND U i m 4 WIRE amp GROUND A B C CLOCKWISE 1 r A B C CLOCKWISE ROTATION I ROTATION o O 5 1 3 SEE NOTES 2 3 UNIT WILL NOT OPERATE I I IF PHASE ROTATION IS INCORRECT J E poe e i EXTERNAL CONN BOARD 12 13 L1 L2 L3 NG 1 Wb EE T 44 4 xo12 xoli 2 3 4 NEM m li F007 F009 GND P E 55 Tee i l i l i l i l i i Sume INVERTER X003 1 i i UT3120 UT3220 UPS j
24. ith grounding electrode conductor Static switch An electronic switch that has no moving parts 702 Abbreviations BCA Battery cabinet assembly DCD DC disconnect switch may be a separate switch or a switch located on the battery cabinet rack MBB Maintenance bypass breaker MBC Maintenance bypass cabinet MIB Main input breaker MOB Main output breaker SKRU Solenoid key release unit UIB UPS input breaker UOB UPS output breaker
25. l Figure 7 Communication Interface Board Option Use Class 1 wiring methods Not Ba To n cad X002 X001 X003 25 PIN SUB D MALE COMMUNICATION X004 25 PIN SUB D MALE INTERFACE BOARD X005 25 PIN SUB D FEMALE X005 X004 X003 Serial Port RS232 Serial Port 0 20 mA current loop COM PORT RELAY CONTACTS 30 VAC 60 VDC Maximum 0 5 A Minimum 0 05 mA 14 5 15 UPS on shown with UPS off 2 5 16 e 17 Static bypass operation shown with static bypass operation off 4 s 20 oe 19 Battery operation shown with battery operation off 07 21 Battery low warning shown with battery low warning off it 13 Remote UPS shut down input 3 5 25 pulse for 1 second minimum Y 25 14 UT3120 UT3160 and UT3220 Planning and Installation Manual Figure 8 Relay Board Option The relays are shown in the alarm position and correspond to non energized coils RELAY BOARD gt FAN FAILURE N INVERTER FUSE FAILURE N gt LOW VOLTAGE o N HE HIGH TEMPERATURE 7 N BATTERY DCD OFF Q o OUTPUT VOLTAGE OUTSIDE LIMITS 7 N UPS ON STATIC BYPASS N gt EXTERNAL MANUAL BYPASS ON o 7 gt N
26. net MBC and UPS IMPORTANT If you do not have a BEST maintenance bypass cabinet MBC you must provide overcurrent protection and a UPS input AC disconnect means BEST strongly recommends that a means of bypassing the UPS from the critical load be provided for maintenance Follow these guidelines when installing the MBC and UPS Use the information in Section 105 to find an appropriate location for the UPS Install the conduit connection kit per the instructions provided with the conduit connection kit Install the MBC within sight of the UPS When installing the MBC see Figure 5 and any instructions provided with the MBC Install all wiring in accordance with national and local electrical codes Use 75 C copper conductors Install the AC input and UPS output in separate conduits UPS output cabling shall be installed in dedicated conduit systems and not shared with other electrical circuits Control wiring must be installed in separate conduit Good ground connections are necessary to reduce electrical noise and make the operation of the UPS and the loads safe Follow the grounding guidelines in the installation wiring diagram Refer to the National Electrical Code NEC appropriate IEEE documents and all applicable codes For systems with non linear loads recommended practice is to size the neutral conductor for 1 732 times the phase current When installing the AC wiring refer to Figure 4 or 5 and to any additional
27. oard Use Class 1 wiring methods NOT USED NOT USED NOT USED lt SUMMARY ALARM 1 3 CONNECTED BATTERY OPERATION 30 SEC DELAY 1 3 CONNECTED IF SYSTEM IS IN BATTERY OPERATION EXTERNAL BYPASS CONTACT 1 3 CONNECTED IF SYSTEM IS IN STATIC BYPASS OPERATION NOT USED MBC INHIBIT 1 3 CONNECTED IF SYSTEM OUTPUT IS OUTSIDE LIMITS NOT USED POSITION INDICATOR OF DCD IN OPTIONAL BATT CABINET A JUMPER MUST BE USED IF THE UNIT HAS INTERNAL BATTERIES BATTERY TEMPERATURE COMPENSATION PROBE K POSITION INDICATOR OF EXTERNAL UPS BYPASS SWITCH NOT USED REMOTE START STOP 13 COMMON 11 12 OFF CLOSING CONTACTS EMERGENCY SHUT DOWN IF 12VDC 10mA EXTERNAL SUPPLY fe IS REMOVED FROM TERMINALS TO USE THIS FUNCTION 1 REMOVE JUMPER SWO1 S EMERGENCY SHUT DOWN IF DISCONNECTED 12V CIRCUIT 42 1 2 3 110 4 BROWN 5 BLUE 6 7 8 So 111 N ANON CYCYCYCyY OA at NA 142 d M X001 X005 X006 X002 Xoo7 E X008 X009 di X010 X011 X003 X012 SW01 X004 8 1 NOT USED NOT USED 6 4 NOT USED X007 X011 ARE CHANGE OVER RELAY CONTACTS NOT TO EXCEED NEC ARTICLE 725 C CLASS 2 LIMITS 13 TO CONTROLLER BOARD UT3120 UT3160 and UT3220 Planning and Installation Manua
28. onnect DCD OFF Connect the negative cable s to the UPS Tighten to the proper torque specifications Replace all covers Continue with Section 300 Initial Startup and Phase Check Battery Replacement Information Only a qualified service person familiar with battery systems should replace batteries See Section 500 Shutdown Procedure to bypass and shut down the UPS Review all of the warnings at the beginning of Section 202 before replacing the batteries Use the Same Number and Type of Battery To ensure continued superior performance of your UPS and to maintain proper battery charger operation you must replace the batteries with the same number of batteries The batteries must be the same manufacturer type as the original batteries and have the same voltage and ampere hour rating as the original batteries Verify that the Battery Terminal is Not Grounded If any battery terminal is inadvertently grounded you must remove the connection from the terminal to ground earth before you service the batteries Contacting any part of a grounded battery can cause a risk of electric shock An electric shock will be less likely if you disconnect the ground connection before you service the batteries Handle Used Batteries with Care Assume that old batteries are fully charged Use the same precautions you would use when handling a new battery Do not short battery terminals or the battery string with a cable or tool wh
29. range or cooler allows batteries to have a longer shelf life Recharge stored batteries every 90 to 120 days 105 Finding a Location for the UPS Keep these guidelines in mind when you choose the location for the UPS system and the batteries Place the UPS in a clean dust free environment free of contaminants The air must be free to circulate around the UPS cabinet and any battery cabinets or racks Avoid placing the unit in direct sunlight or near other heat sources Make sure that the ambient temperature 15 32 to 104 F 0 to 40 C Ideal temperature is 77 F 25 C NOTE At95 F 35 C battery life will be about one half what it would be at a normal temperature of 77 F 25 C At 113 F 45 C battery life will be about one fourth normal e Make sure that the floor can support the weight of the UPS external batteries and any other necessary equipment See Table 4 for weights and floor loading specifications The unit can be placed close to walls as long as there is enough clearance for the front doors to open Required service clearance is 3 feet 1 meter at the front and 3 feet 1 meter at the top of the unit If possible allow a minimum of 3 feet 1 meter of clearance around the entire unit for easier servicing Allservice access is from the front and top of the unit cable entries are accessible from the bottom of the unit Do not operate the UPS or batteries in a sealed room or con
30. s breaker MBB OFF 3 Switch the UPS output breaker UOB OFF 20 3120 UT3160 and UT3220 Planning and Installation Manual 4 Atthe mains AC input service panel switch on the input power to the UPS and maintenance bypass cabinet MBC 5 Switch the UPS input breaker UIB ON The display should show System type XxXkVA xxxV and an audible alarm should sound 6 Within 20 seconds the display should show Stand by 7 Turn the pre charge discharge switch to the pre charge position and hold it until the LED turns off 8 Switch the battery DC disconnect DCD 9 Check the phase rotation at the service panel and the unit The unit will not start if the rotation 15 incorrect The phase rotation must be A B C and clockwise 10 When the audible alarm stops press the green button located inside the UPS front door The UPS display will show Normal operation load power xx NOTE One or more alarms may occur If the alarm s persists for more than 20 seconds refer to the Alarms section of the user manual If the unit activates a battery monitor alarm you should set the user parameter battery monitor reset to 11 If the UPS is connected to a generator verify that the unit operates properly on generator power before continuing If the UPS operates properly on generator power continue this procedure If the UPS does not operate properly on generator power
31. tainer UT3120 UT3160 and UT3220 Planning and Installation Manual 106 Technical Support Best Power Technology Incorporated is committed to outstanding customer service Our Technical Support Center is happy to help you with any problems or answer any questions you may have A service technician is available 24 hours a day 365 days a year Please have the UPS model number and serial number available when you call See the ID label located inside the front door of the UPS Technical Support 1 800 356 5737 U S A and Canada or 1 608 565 2100 Technical Support Fax 1 608 565 7642 or 1 608 565 2509 Bulletin Board Service 1 608 565 7424 CompusServ Type Go BEST at any prompt Section 200 Installation WARNING Before continuing read the warnings on the inside front cover of this manual Insulated Tools and Other Equipment Needed Torque wrench in inch pounds or e Electrical Tape newton meters e Standard and Phillips Screwdrivers e Standard U S and metric wrenches Torx Head Screwdriver Set Petroleum jelly or conductive grease Brush for applying petroleum jelly e Mallet conductive grease to battery terminals e Volt Ohm meter True RMS Digital UNITY I User Manual e Pliers e Phase Rotation Meter e Ratchet and Sockets The customer must provide all cabling and interconnection hardware UT3120 UT3160 and UT3220 Planning and Installation Manual 201 Installing the Maintenance Bypass Cabi
32. ypass cabinet MBC 1 e Ifyou have shut the loads down Skip to step 4 Ifthe loads are to remain powered Program the unit into static bypass operation a Press im to access the user parameters b Press the or 9 key until the display shows Bypass operation OFF c Press 2 to turn static bypass operation on The display should show Bypass Operation 2 Switch the maintenance bypass breaker MBB ON 3 Switch the UPS output breaker UOB OFF 4 Press the red off button located inside the UPS front door 5 Switch the UPS input breaker UIB OFF 6 Switch the DC disconnect DCD OFF 7 Turn the pre charge discharge switch to the discharge position and hold it until the LED turns off The UPS display should now be blank To restart the unit see Section 600 Startup from Maintenance Bypass 8 Optional If the loads are not to be powered turn off all AC power sources to the UPS and maintenance bypass cabinet MBC 24 UT3120 UT3160 and UT3220 Planning and Installation Manual Section 600 Startup from Maintenance Bypass This section tells how to start the UPS from maintenance bypass The steps in this procedure are for a unit with a BEST maintenance bypass cabinet MBC r2 Se D Make sure that the following switches are in the following positions The UPS input breaker UIB should be OFF The UPS output breaker UOB should be OFF
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