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U N I T Y / I

Three-Phase Uninterruptible Power Systems

UT340, UT360, UT380, UT3100

60 Hz

™

Planning and

Installation Manual

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for your

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

WARNING!

UPS units contain hazardous AC and DC voltages. A qualified electrician must install the UPS, AC line service, and external batteries 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 may 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.

(U.S.A. or Canada; elsewhere, call your local BEST office).

UNITY

/I™ UPS.

TEST BEFORE TOUCHING!

To reduce the risk of fire or electric shock, install the UPS and external 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.

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.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Table of Contents

List of Tables and Figures...............................................ii

100: Introduction...........................................................1

101: UPS Footprint.....................................................2

102: Specifications for the UT340 and UT360................................3

103: Specifications for the UT380 and UT3100...............................5

104: Receiving and Moving the UPS.......................................7

105: Storing the UPS and Batteries........................................8

106: Finding a Location for the UPS.......................................8

107: Technical Support..................................................9

200: Installation............................................................9

201: Installing the Maintenance Bypass Cabinet (MBC) and UPS...............10

202: Installing the External Batteries and DC Disconnect (DCD)................18

300: Initial Startup and Phase Check..........................................22

301: Initial Startup and Phase Check

for Units with a BEST-Supplied Rotary Switch MBC.....................23

302: Initial Startup and Phase Check

for Units with a BEST-Supplied Three-Breaker MBC.....................26

400: Clearing the Events Log................................................29

500: Shutdown Procedures..................................................29

501: Shutdown Procedure for Units with a BEST-Supplied Rotary Switch MBC....30

502: Shutdown Procedure for Units with a BEST-Supplied Three-Breaker MBC...30

600: Startup from Maintenance Bypass........................................31

601: Startup from Maintenance Bypass with a BEST-Supplied Rotary Switch MBC.31 602: Startup from Maintenance Bypass with a BEST-Supplied Three-Breaker MBC.32

700: Glossary of Terms and Abbreviations......................................33

701: Glossary of Terms.................................................33

702: Abbreviations....................................................34

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

List of Tables and Figures

Tables

1 AC Input Specifications, UT340 and UT360.....................................3

2 AC Output Specifications, UT340 and UT360...................................3

3 DC Input/Battery Specifications, UT340 and UT360..............................4

4 General Specifications, UT340 and UT360......................................4

5 AC Input Specifications, UT380 and UT3100....................................5

6 AC Output Specifications, UT380 and UT3100..................................5

7 DC Input/Battery Specifications, UT380 and UT3100.............................6

8 General Specifications, UT380 and UT3100.....................................6

Figures

1 Footprint of the UT340, UT360, UT380, UT3100

with Conduit Connection Kit (Top View)...................................2

2 Front View (Covers Removed)..............................................11

3 UT340 - UT3100 Installation Wiring Diagram,

Typical Installation With No Maintenance Bypass Cabinet.....................12

4 UT340 and UT360 Installation Wiring Diagram, Typical Installation................13

5 UT380 and UT3100 Installation Wiring Diagram, Typical Installation...............14

6 External Connection Board.................................................15

7 Communication Interface Board (Option)......................................16

8 Relay Board (Option)......................................................17

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Section 100: Introduction

An uninterruptible power system (UPS) protects sensitive equipment against unacceptable disturbances from the mains (AC line) supply. The to serve a wide variety of electrical equipment— from mainframe computers to enterprise-wide EDP installations to production lines. The single-conversion technology and harmonics isolation.

UNITY

/I three-phase UPS provides true on-line,

/I™ three-phase UPS has the capacity

Only a the electrician guidelines for:



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.

qualified electrician

installation wiring. external battery installation. UPS startup procedures. phase check for the maintenance bypass cabinet (MBC). UPS shutdown procedures.

should install this unit. The planning and installation manual gives

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

101 UPS Footprint

Figure 1: Footprint of the UT340, UT360, UT380, UT3100

with Conduit Connection Kit (Top View)

CONDUIT

CONNECTION

BOX

CABLE ENTRY

Inches Millimeters A B C D E F

39.4 1000

17.9 455

19.8 504

27.9 708

31.7 804

2.4 60

Allow a minimum of 3 feet (914 mm) at the front of the unit, 3 feet (914 mm) at the top of the unit, and 6 inches (152 mm) at the back of the unit for service clearance and for air flow.

Cable entry from bottom only. The conduit connection kit includes a conduit connection

box and three pedestals, shipped separately. See installation instructions shipped with kit.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

102 Specifications for the UT340 and UT360

Tables 1 - 4 contain specifications for UPS models UT340 and UT360.

Table 1: AC Input Specifications, UT340 and UT360

UT340 UT360

Voltage 3 x 208Y/120 3 x 480Y/277 3 x 208Y/120 3 x 480Y/277 Rated input current - Amps 146 63 219 95 Mains tolerance % (programmable) +10, -15 +10, -15 +10, -15 +10, -15 Bypass tolerance % (programmable) ±10 ±10 ±10 ±10 Frequency - Hz 60 ±6% 60 ±6% 60 ±6% 60 ±6% Current distortion % - THD 0 - 5 0 - 5 0 - 5 0 - 5 Acceptable cable size range - AWG

1, 2, 3

Recommended overcurrent protection -

3, 4

Amps

3/0 - 250 kcmil 4 - 2 300 - 500 kcmil 1 - 2/0

200 80 300 125

Table 2: AC Output Specifications, UT340 and UT360

UT340 UT360

Voltage 208Y/120 480Y/277 208Y/120 480Y/277 Rated output current - Amps 111 48 167 72 Tolerance % - symmetrical load

- asymmetrical load

- load step 0-100%

±3 ±5

±1

±1 ±3 ±5

±1 ±3

±5 Distortion % - linear load 0 - 3 0 - 3 0 - 3 0 - 3 Frequency - Hz

- mains synchronized

- free running %

60 ±6%

±0.1

60 ±6%

±0.1

60 ±6%

±0.1

Overload capacity %, mains operation

- 1 minute

- 10 minutes

250 150

Overload capacity %, battery operation

- 1 minute

- 10 minutes

Acceptable cable size range - AWG

1, 2, 3

Recommended overcurrent protection -

3, 4

Amps

150 125

1/0 - 3/0 6 - 3 4/0 - 300 kcmil 3 - 1

150 60 225 90

±1 ±3 ±5

60 ±6%

±0.1

250 150

150 125

Notes for Tables 1 and 2:

1 Based upon UL rating of termination connector and upon 75 Conductor size may vary based on installation requirements. 2 For a 100% switch mode load, it is recommended that you size the neutral conductor for 1.732 times the phase current. 3 For units with external bypass, see Figures 4 and 5. 4 For UPS module only (UPS input breaker). 5 100% imbalance, provided output current rating is not exceeded.

C copper conductors at 30o C ambient from NEC Table 310-16.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Table 3: DC Input/Battery Specifications, UT340 and UT360

UT340 UT360

Acceptable external battery cable size range -

AWG Nominal DC current - Amps 200 300 Nominal DC voltage 216 216 Nominal number of cells 108 108 Factory-set float charge voltage Charger current limit - Amps

250 kcmil or 2 x 1/0 500 kcmil or 2 x 3/0

246 246

20 30

Inverter % efficiency - 100% load

- 75% load

- 50% load

- 25% load

Notes for Table 3:

1 Based on 75 based on installation requirements. 2 Adjust the float charge voltage setting per the battery manufacturer’s recommendations. 3 Programmable to lower level.

C copper conductors at 30o C ambient, intermittent duty, from NEC Table 310-16. Conductor size may vary

91 91 89 86

Table 4: General Specifications, UT340 and UT360

UT340 UT360

Noise attenuation - dB - differential mode

- common mode

120

Typical heat dissipation - kW (BTU)

- At full rated load, normal operation

- At full rated load, economy mode

- At 0.8 PF load, normal operation

- At 0.8 PF load, economy mode

Efficiency %, AC to AC - normal operation

- economy mode

2.11 (7185)

1.67 (5688)

1.68 (5748)

1.33 (4551) 95

Humidity %, non-condensing maximum 95 95 Ambient UPS and battery temperature Ideal UPS and battery temperature Air flow - CFM (m

/hour) 706.8 (1200) 706.8 (1200)

F (o C) 32 - 104 (0 - 40) 32 - 104 (0 - 40)

F (o C) 77 (25) 77 (25)

120

3.16 (10,778)

1.86 (6333)

2.53 (8622)

1.48 (5067) 95

92 92 90 87

Audible noise, typical - dBa 55 55 UPS dimensions, with conduit connection kit

H x W x D - inches (mm)

59.1 x 39.4 x 31.5

(1500 x 1000 x 800)

59.1 x 39.4 x 31.5

(1500 x 1000 x 800) UPS total weight - lbs (kg) 1741 (790) 2160 (980) Conduit connection kit weight - lbs (kg) 54 (24.49) 54 (24.49) Floor loading, UPS with conduit connection kit -

14.93 (102.94

)

18.42 (127)

pounds per square inch (kPa)

Note for Table 4:

1 With isolation transformer and the UPS wired as a separately derived system.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

103 Specifications for the UT380 and UT3100

Tables 5 - 8 contain specifications for UPS models UT380 and UT3100.

Table 5: AC Input Specifications, UT380 and UT3100

UT380 UT3100

Voltage 3 x 480Y/277 3 x 480Y/277 Rated input current - Amps 127 159 Mains tolerance % (programmable) +10, -15 +10, -15 Bypass tolerance % (programmable) ±10 ±10 Frequency - Hz 60 ±6% 60 ±6% Current distortion % - THD 0 - 5 0 - 5 Acceptable cable size range - AWG Recommended overcurrent protection - Amps

1, 2, 3, 4, 5

4, 5

2/0 - 4/0 3/0 - 250 kcmil

175 200

Table 6: AC Output Specifications, UT380 and UT3100

UT380 UT3100

Voltage 480Y/277 480Y/277 Rated output current - Amps 96 120 Tolerance % - symmetrical load

- asymmetrical load

- load step 0-100% Distortion %, linear load 0 - 3 0 - 3 Frequency - Hz - mains synchronized

- free running % Overload capacity % mains operation - 1 minute

- 10 minutes Overload capacity % battery operation- 1 minute

- 10 minutes Acceptable cable size range - AWG Recommended overcurrent protection - Amps

Notes for Tables 5 and 6:

1 Bus bar can accept up to 2 cables per terminal. 2 Based upon UL rating of termination connector and upon 75 Conductor size may vary based on installation requirements. 3 For a 100% switch mode load, it is recommended that you size the neutral cable for 1.732 times the phase current. 4 For units with external bypass, see Figures 4 and 5. 5 For UPS module only (UPS input breaker). 6 100% imbalance, provided output current rating is not exceeded.

1, 2, 3, 4, 5

4, 5

C copper conductors at 30o C ambient from NEC Table 310-16.

±1 ±3 ±5

60 ±6%

±0.1

250 150

150 125

±1 ±3 ±5

60 ±6%

±0.1

250 150

150 125

1 - 2/0 1/0 - 3/0

125 150

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Table 7: DC Input/Battery Specifications, UT380 and UT3100

UT380 UT3100

Acceptable external battery cable size range - AWG

Nominal DC current - Amps 245 310 Nominal DC voltage 360 360 Nominal number of cells 180 180 Factory-set float charge voltage Charger current limit - Amps

250 kcmil or 2 x 1/0 500 kcmil or 2 x 3/0

410 410

25 30

Inverter % efficiency - 100% load

- 75% load

- 50% load

- 25% load

Notes for Table 7:

1 Based on 75 based on installation requirements. 2 Adjust the float charge voltage setting per the battery manufacturer’s recommendations. 3 Programmable to lower level.

C copper conductors at 30o C ambient, intermittent duty, from NEC Table 310-16. Conductor size may vary

92 92 90 87

Table 8: General Specifications, UT380 and UT3100

UT380 UT3100

Noise attenuation - dB - differential mode

- common mode

Typical heat dissipation - kW (BTU)

- At full rated kW load, normal operation

- At full rated kW load, economy mode

- At 0.8 PF load, normal operation

- At 0.8 PF load, economy mode

Efficiency %, AC to AC - normal operation

- economy mode Humidity %, non-condensing maximum 95 95 Ambient UPS and battery temperature Ideal UPS and battery temperature Air flow - CFM (m

/hour) 706.8 (1200) 706.8 (1200)

F (o C) 32 - 104 (0 - 40) 32 - 104 (0 - 40)

F (o C) 77 (25) 77 (25)

120

3.33 (11,377)

2.47 (8445)

2.67 (9101)

1.98 (6756) 96

4.17 (14,221)

3.09 (10,556)

3.33 (11,377)

2.47 (8445)

93 93 91 88

120

96 97

Audible noise, typical - dBa 55 55 UPS dimensions, with conduit connection kit

H x W x D - inches (mm)

59.1 x 39.4 x 31.5

(1500 x 1000 x 800)

59.1 x 39.4 x 31.5

(1500 x 1000 x 800) UPS total weight - lbs (kg) 2425 (1100) 2634 (1195) Conduit connection kit weight - lbs (kg) 54 (24.49) 54 (24.49) UPS weight with conduit connection kit -

20.62 (142.17) 22.36 (154.17)

pounds per square inch (kPa)

1 With isolation transformer and the UPS wired as a separately derived system.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

104 Receiving and Moving the UPS

WARNING!

The UPS and related equipment are 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.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

105 Storing the UPS and Batteries

You can store the recommends that the unit and batteries be stored between 59o and 77o F (15o and 25o C). This temperature range or cooler allows batteries to have a longer shelf life. Recharge stored batteries every 90 to 120 days.

UNITY

/I UPS between -4o and 104o F (-20o and 40o C). However, BEST

106 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 is 32o to 104o F (0o to 40o C).



Ideal temperature is 77o F (25o C).

NOTE:

At 95o F (35o C), battery life will be about one-half of what it would be at a normal temperature of 77o F (25o C). At 113o F (45o C), battery life will be about onefourth of normal.

Make sure that the floor can support the weight of the UPS, external batteries, and any other



necessary equipment. See Table 4 in Section 102 or Table 8 in Section 103 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 (914 mm) at the front and 3 feet (914 mm) at the top of the unit. If possible, allow a minimum of 3 feet (914 mm) of clearance around the entire unit for easier servicing.

All service access is from the front and top of the unit. Cable entry is from the bottom of the



unit.

Do not operate the UPS or batteries in a sealed room or container.



UT340, UT360, UT380, and UT3100

Planning and Installation Manual

107 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 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

CompuServ: Type “Go BEST” at any ! prompt

UPS model number

and

serial number

available when you call. See the ID

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



newton-meters Standard U.S. and metric wrenches



Petroleum jelly or conductive grease



Mallet



Volt-Ohm meter (True RMS - Digital)



Pliers



Ratchet and sockets



The customer must provide all cabling and interconnection hardware.

Electrical tape



Standard and Phillips screwdrivers



Torx head screwdriver set



Brush (for applying petroleum jelly or



conductive grease to battery terminals)

UNITY



Phase rotation meter



/I User Manual

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

201 Installing the Maintenance Bypass Cabinet (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 provided for maintenance.

Follow these guidelines when installing the MBC and UPS:



strongly recommends

Use the information in Section 106 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 4 or 5 and any instructions provided with the MBC.

Install the AC input and UPS output in separate conduits.

installed in dedicated conduit systems

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.

that a means of bypassing the UPS from the critical load be

UPS output cabling shall be

and not shared with other electrical circuits.

When installing the AC wiring, refer to Figure 3, 4, or 5 and to any additional diagrams



provided with the UPS.

Figures 3, 4, and 5 show



•If you are installing the UPS with

•If you have a UT340 or UT360 with a BEST-supplied rotary switch MBC, see Figure 4.

•If you have a UT380 or UT3100 with a BEST-supplied three-breaker MBC, see Figure 5.

See Figure 2 for a front view of the UPS with the covers removed. 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.

If you have any questions, contact BEST’s Technical Support Center for assistance (see



Section 107).

typical installations

no maintenance bypass cabinet

. Your installation may differ.

, see Figure 3.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 2: Front View (Covers Removed)

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 3: UT340 - UT3100 Installation Wiring Diagram, Typical Installation,

No External Maintenance Bypass Cabinet

NOTE 1:

Section 102 for recommended input overcurrent protection. (b) For a UT380 or UT3100, see Table 5 in Section 103 for recommended input overcurrent protection.

NOTE 2:

Section 102 for recommended output overcurrent protection. (b) For a UT380 or UT3100, see Table 6 in Section 103 for recommended output overcurrent protection.

NOTE 3:

UPS input AC disconnect means.

NOTE 4:

DC disconnect (DCD) and pre-charge/discharge switch. (b) The pre-char than 10 feet (3 m) from the DC disconnect.

(a) For a UT340 or UT360, see Table 1 in

(a) For a UT340 or UT360, see Table 2 in

You must provide overcurrent protection and (a) Refer to an

ge/discharge box must be located less

y instructions provided with the

ADDITIONAL NOTES:



A qualified electrician must install the UPS accordin

to all applicable codes.



All power and control wires must be in separate

conduits.



grounding electrode conductor (protective

The earth—PE) must be the same size (ampacit UPS input conductors. Conduit is not an acceptable grounding electrode conductor—see National Electrical Code Section 250-91(a).



A UT340 or UT360 unit is wired from the factor separatel equipment the UPS. See National Electrical Code Article 250-5(d) and 250-26 for proper installation

y derived system. Output neutral is bonded to

ground through main bonding jumper inside

grounding.

y) as the

y as a

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 4: UT340 and UT360 Installation Wiring Diagram, Typical Installation

NOTE 1:

device per applicable codes. See the table below for mains input volta

NOTE 2:

DC disconnect (DCD) and pre-charge/discharge box. (b) The pre-char than 10 feet (3 meters) from the DC disconnect.

Size the mains input overcurrent protection

e and current ratings.

Mains Input

UPS Model VAC Maximum Amps

UT340 208 200 UT340 480 86 UT360 208 301 UT360 480 130

(a) Refer to an

e/discharge box must be located less

instructions provided with the

ADDITIONAL NOTES:



A qualified electrician must install the UPS accordin to all applicable codes.



All power and control wires must be in separate conduits.



earth—PE) must be the same size (ampacit UPS input circuit conductors. Conduit is not an acceptable National Electrical Code Section 250-91(a).



separatel equipment the UPS. See National Electrical Code Article 250-5(d) and 250-26 for proper installation



b protection and UPS input AC disconnect means.



device which switches all three phases and neutral. If Technical Support Center for instructions to convert the

unit to a not-separatel

rounding electrode conductor (protective

The

) as the

rounding electrode conductor—see

A UT340 or UT360 unit is wired from the factor

derived system. Output neutral is bonded to

round through main bonding jumper inside

rounding.

ou do not have a BEST-supplied maintenance

pass cabinet (MBC), you must provide overcurrent

The maintenance b

ou are using a 3-pole device, contact BEST’s

pass switch must be a 4-pole

derived system.

as a

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 5: UT380 and UT3100 Installation Wiring Diagram, Typical Installation

NOTE 1:

device per applicable codes. See the table below for mains input volta

NOTE 2:

DC disconnect (DCD) and pre-charge/discharge box. (b) The pre-char than 10 feet (3 meters) from the DC disconnect.

Size the mains input overcurrent protection

e and current ratings.

Mains Input

UPS Model VAC Maximum Amps

UT380 480 173

UT3100 480 216

(a) Refer to an

e/discharge box must be located less

instructions provided with the

ADDITIONAL NOTES:



A qualified electrician must install the UPS accordin to all applicable codes.



All power and control wires must be in separate conduits.



ou do not have a BEST-supplied maintenance

If b

pass cabinet (MBC), you must provide overcurrent

protection and UPS input AC disconnect means.

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 6: External Connection Board

Use Class 1 wiring methods.

NOT USED

SUMMARY ALARM IF 1-3 CONNECTED

BATTERY OPERATION (30 SECS. DELAY) BATTERY OPERATION IF 1-3 ARE CONNECTED

EXTERNAL BYPASS CONTACT

1-3 CONNECTED IF SYSTEM IS

IN STATIC BYPASS OPERATION

NOT USED

MBC INHIBIT; IF SYSTEM OUTPUT IS OUTSIDE LIMITS

THEN 1-3 ARE CONECTED

3 1

X005

X006

1 2 3

X001

X002

X007

X008

X009

X010

X011

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

POSITION INDICATOR OF EXTERNAL UPS BYPASS SWITCH

NOT USED

REMOTE START/STOP

13 COMMON, 11 "ON", 12 "OFF" (CLOSING CONTACTS)

EMERGENCY SHUT DOWN IF 12VDC (10mA) EXTERNAL SUPPLY IS REMOVED FROM TERMINALS. TO USE THIS FUNCTION REMOVE JUMPER SWO1

EMERGENCY SHUT DOWN IF DISCONNECTED (12V CIRCUIT)

X007-X011 ARE CHANGE OVER RELAY CONTACTS (NOT TO EXCEED NEC ART. 725 C CLASS 2 LIMITS)

BROWN BLUE

110

111

1 2

3 4 5 6 7 8 9

10 11

12 13 14 15 16 17

X012

X003

SW01

X004

TO CONTROLLER

BOARD

NOT USED

UT340, UT360, UT380, and UT3100

Planning and Installation Manual

Figure 7: Communication Interface Board (Option)

Use Class 1 wiring methods.

Not Used

X002

X005

COMMUNICATION

INTERFACE BOARD

COM-PORT

To Controller

X001

X003 25 PIN SUB D MALE X004 25 PIN SUB D MALE X005 25 PIN SUB D FEMALE

X004 X003

Serial Port RS232

Serial Port 0 - 20 mA current loop

RELAY CONTACTS: 30 VAC, 60 VDC Maximum 0.5 A, Minimum 0.05 mA

14 15 “UPS on” (shown with UPS off) 2

16 17 “Static bypass operation” (shown with static bypass operation off) 4

18 19 “Battery operation” (shown with battery operation off) 6

20 21 “Battery low warning” (shown with “battery low” warning off) 8

13 + Remote UPS shut down input (3.5 - 25 VDC pulse for 1 second minimum) 25 –

UT340, UT360, UT380, and UT3100

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

X002:1

X003:1

X004:1

X005:1

X006:1

X007:1

X008:1

X009:1

X010:1

X011:1

X012:1

X013:1

X014:1

X015:1

X016:1

X017:1

MAINS FAILURE

BATTERY CHARGING FAILURE

OVERLOAD

FAN FAILURE

INVERTER FUSE FAILURE

LOW BATT. VOLTA G E

HIGH TEMPERATURE

BATTERY DCD OFF

OUTPUT VOLTAGE OUTSIDE LIMITS

UPS ON STATIC BYPASS

EXTERNAL MANUAL BYPASS ON

NORMAL OPERATION

COMMON FAULT

BYPASS VOLTAGE OUTSIDE LIMITS

BATTERY OPERATION

NOT USED

Description Minimum Maximum

Contact voltage - AC 6 V 250 V Contact current - AC * 50 mA 8 A Contact voltage and

current - DC *

6 V / 50 mA 250 V / 0.3 A

6 V / 8 A

* Resistive load

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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.

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 precautions 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.

2. 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.

3. 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.

4. 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.

5. Install the battery cables so they cannot be pinched by the UPS or battery cabinet doors.

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DANGER!

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.

7. To reduce the risk of fire or electric shock, install the batteries in a temperature and humidity controlled indoor area, free of contaminants.

8. Battery system 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.

9. Where conductors may be exposed to physical damage, protect the conductors in accordance with all applicable codes.

10. 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



accordance 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.

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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. In each battery string, connect the cables between batteries as shown in the battery

installation diagram provided with the batteries.

b. 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.

b. Meter the DC voltage between the positive terminals 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.

c. 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 3, 4 or 5 and to any instructions provided with the DCD and pre-charge/discharge switch.

4. Connect the external batteries to the UPS.

a. Connect the positive (+) cable(s) to the UPS first. Install ring connectors for 10 mm

bolts as required.

b. To prevent short circuits, insulate the UPS end of the negative (–) cable(s).

Do not connect the negative (–) cables to the UPS yet.

c. Connect the positive (+) cable(s) to the battery system and tighten to the proper torque

specifications.

d. Connect the negative () cable(s) to the battery system and tighten to the proper torque

specifications.

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5. Check the DC voltage.

a. Connect the DC fuse(s) as shown in the battery installation diagram provided with the

batteries. Verify proper voltage and polarity at the battery pack. See Table 3 in Section 102 or Table 7 in Section 103 for nominal DC voltage.

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 disconnect (DCD) “OFF.”

6. Connect the negative (–) cable(s) to the UPS. Tighten to the proper torque specifications.

7. Replace all covers.

8. 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 Procedures,” 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 when you disconnect the batteries.

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 Dispose of Batteries Properly:

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.

For assistance, call BEST’s Technical Support Center at

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 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).

If you have a unit with a BEST-supplied



If you have a unit with a BEST-supplied



any time

mains (AC line) is applied (after a 60-second

rotary switch three-breaker

MBC, see Section 301.

MBC, see Section 302.

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301 Initial Startup and Phase Check

for Units with a BEST-Supplied Rotary Switch MBC

Follow this Procedure Exactly! No Load Should Be Connected!

1. Make sure that all AC and DC power is off.

2. Switch the UPS bypass switch to “UPS.”

3. Make sure that the main circuit breaker in the load panel is off so that the loads cannot receive power from the UPS.

4. At the mains AC input panel, switch on the input power to the UPS and maintenance bypass cabinet (MBC).

5. Switch the UPS AC disconnect switch “ON.” The UPS display should show

type xxkVA xxxV

6. Within 20 seconds, the display should show

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) “ON.”

9. Check the phase rotation at the service panel and the unit. The unit will not start if the phase rotation is incorrect.

10. When the audible alarm stops, push the green “on” button located inside the UPS front door. The display will show

NOTE:

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, phone BEST’s Technical Support Center for assistance.

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 “ON.”

, and an audible alarm should sound.

**Stand-by**

The phase rotation must be A, B, C and clockwise

Normal operation load power xx%

System

CAUTION

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Planning and Installation Manual

Before

check for correct voltage, phasing, and system operating mode.

12. Program the unit into static bypass operation:

13. At the maintenance bypass cabinet (MBC), make sure the UPS output voltage is

you switch the UPS bypass switch from “UPS” to “LINE”, use the steps below to

a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn static bypass operation on. The display should show

to to to

neutral neutral neutral

_______VAC _______VAC _______VAC

L1 L2 L3

to to to

neutral neutral neutral

operation

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 MBC Output

Bypass operation: OFF

Bypass

_______VAC _______VAC _______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.

14. At the maintenance bypass cabinet (MBC), make sure the UPS output voltage and the AC line input voltage are in phase. To do this, measure the AC voltages between the following points at the MBC AC line input and the MBC output:

MBC AC Line Input MBC Output

L1 input

L2 input

L3 input

These readings must not be more than 10 VAC!

Support Center or your local BEST office.

to to to

L1 output L2 output L3 output

_______VAC _______VAC _______VAC

If they are, call BEST’s Technical

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Planning and Installation Manual

15.At the maintenance bypass cabinet (MBC), measure the following:

a. b. c.

“

N input

N input N output N input

N output

Ground

N output

” should not exceed “

_______VAC _______VAC _______VAC

N input

Ground

.” If it does, call BEST’s

Technical Support Center.

16.Check for proper voltages at the bypass switch load output terminals and the load distribution panel(s).

Bypass Switch Load Output Load Panel Input

a. L1 to b.

c. L3 to

neutral neutral

neutral

_______VAC L1 to _______VAC L2 to _______VAC

neutral neutral neutral

_______VAC _______VAC _______VAC

17.Switch the UPS bypass switch to “BYPASS.”

18.Recheck for proper voltages at the bypass switch load output and the load distribution panel(s).

Bypass Switch Load Output Load Panel Input

a. L1 to b.

c. L3 to

neutral neutral

neutral

_______VAC L1 to _______VAC L2 to _______VAC

neutral neutral neutral

_______VAC _______VAC _______VAC

19.Switch the UPS bypass switch to “UPS.”

20.Return the UPS to normal operation mode: a. Press to access the user parameters. b. Press the or key until the display shows

Bypass operation: ON

c. Press to turn static bypass operation off. The display should show

operation load power xx%

Normal

You can now apply loads to the system. As the last step of the installation, BEST recommends that you clear the events log. See Section 400, “Clearing the Events Log.”.

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302 Initial Startup and Phase Check

for Units with a BEST-Supplied Three-Breaker MBC

Follow this Procedure Exactly! No Load Should Be Connected!

1. Make sure that all AC and DC power is off.

2. Switch the maintenance bypass breaker (MBB) “OFF.”

3. Switch the UPS output breaker (UOB) “OFF.”

4. At the mains AC input 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

xxkVA xxxV

6. Within 20 seconds, the display should show

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) “ON.”

9. Check the phase rotation at the service panel and the unit. The unit will not start if the phase rotation is incorrect.

10. When the audible alarm stops, press the green “on” button located inside the UPS front door. The UPS display will show

NOTE:

Technical Support Center for assistance.

, and an audible alarm should sound.

**Stand-by**

The phase rotation must be A, B, C and clockwise

Normal operation load power xx%

System type

CAUTION

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Planning and Installation Manual

Before

check for correct voltage, phasing, and system operating mode.

12. Program the unit into static bypass operation:

13. Switch the UPS output breaker (UOB) “ON”.

14. At the maintenance bypass cabinet (MBC), make sure that the UPS output voltage is

you switch the maintenance bypass breaker (MBB) “ON,” use the steps below to

a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn static bypass operation on. The display should show

to to to

neutral neutral neutral

_______VAC _______VAC _______VAC

L1 L2 L3

to to to

neutral neutral neutral

operation

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 MBC Output

Bypass operation: OFF

Bypass

_______VAC _______VAC _______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 208V nominal or 25 volts apart for 480 V nominal, check the connections and correct any wiring problems before continuing.

15. At the maintenance bypass cabinet (MBC), make sure the UPS output voltage and AC line input voltage are in phase. To do this, measure the AC voltage between the following points at the MBC AC line input and the MBC output:

MBC AC Line Input MBC Output

L1 input

L2 input

L3 input

These readings must not be more than 10 VAC!

Support Center or your local BEST office.

to to to

L1 output L2 output L3 output

_______VAC _______VAC _______VAC

If they are, call BEST’s Technical

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Planning and Installation Manual

16.At the maintenance bypass cabinet (MBC), measure the following:

a. b. c.

“

N input

N input N output N input

N output

Ground

N output

” should not exceed “

______VAC ______VAC ______VAC

N input

Ground

.” If it does, call BEST’s

Technical Support Center.

17.Check for proper voltages at the maintenance bypass cabinet (MBC) load output terminals and the load distribution panel(s).

MBC Load Output Load Panel Input

a. L1 to b.

c. L3 to

neutral neutral

neutral

______VAC L1 to ______VAC L2 to ______VAC

neutral neutral neutral

______VAC ______VAC ______VAC

18.Switch the maintenance bypass breaker (MBB) “ON.”

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. L1 to b.

c. L3 to

neutral neutral

neutral

______VAC L1 to ______VAC L2 to ______VAC

neutral neutral neutral

______VAC ______VAC ______VAC

21.Switch the UPS output breaker (UOB) “ON.”

22.Switch the maintenance bypass breaker (MBB) “OFF.”

23.Return the UPS to normal operation: a. Press to access the user parameters. b. Press the or key until the display shows

Bypass operation: ON

c. Press to turn static bypass operation off. The display should show

operation load power xx%

Normal

You can now apply loads to the system. As the last step of the installation, BEST recommends that you clear the events log. See Section 400, “Clearing the Events Log.”

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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 and . The display should show

2. Using the key pad, enter “920701.” The display should show

reset

3. Press . The display should show

If the unit will not be used immediately, go to Section 500, “Shutdown Procedures.”

. The events log is now cleared.

Normal operation load power xx%

Key in password

Logging stack is

Section 500: Shutdown Procedures

WARNING!

After shutting down the unit, or covers. Access panels should be removed only by

wait at least five minutes

before removing any access panels

qualified service personnel

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 a unit with a BEST-supplied maintenance bypass cabinet (MBC).

If you have a unit with a BEST-supplied



If you have a unit with a BEST-supplied



rotary switch three-breaker

MBC, see Section 501.

MBC, see Section 502.

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501 Shutdown Procedure for Units

with a BEST-Supplied Rotary Switch MBC

 If you have shut the loads down:  If the loads are to remain powered:

a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn static bypass operation on. The display should show

operation

2. Switch the UPS bypass switch to “BYPASS.”

3. Press the red “off” button located inside the UPS front door.

4. Switch the UPS AC disconnect switch “OFF.”

5. Switch the DC disconnect (DCD) “OFF.”

6. 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 601, “Startup from Maintenance Bypass for Units with a BEST-Supplied Rotary Switch MBC.”

Skip to step 3.

Program the unit into static bypass operation:

Bypass operation: OFF

Bypass

7. (Optional) If the loads are and maintenance bypass cabinet (MBC).

to be powered, turn off all AC power sources to the UPS

not

502 Shutdown Procedure for Units

with a BEST-Supplied Three-Breaker MBC

 If you have shut the loads down:  If the loads are to remain powered:

a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn static bypass operation on. The display should show

operation

Skip to step 4.

Program the unit into static bypass operation:

Bypass operation: OFF

Bypass

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Planning and Installation Manual

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 602, “Startup from Maintenance Bypass for Units with a BEST-Supplied Three-Breaker MBC.”

8. (Optional) If the loads are and maintenance bypass cabinet (MBC).

to be powered, turn off all AC power sources to the UPS

not

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-supplied maintenance bypass cabinet (MBC).

If you have a unit with a BEST-supplied



If you have a unit with a BEST-supplied



rotary switch three-breaker

601 Startup from Maintenance Bypass

for Units with a BEST-Supplied Rotary Switch MBC

1. Make sure that the following switches are in the following positions:

MBC, see Section 601.

MBC, see Section 602.

The UPS AC disconnect switch should be “OFF.”



The UPS bypass switch should be on “LINE.”



The DC disconnect (DCD) should be “OFF.”



2. Switch the UPS AC disconnect switch “ON.” The UPS display should show

type xxkVA xxxV

and an audible alarm should sound.

System

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Planning and Installation Manual

3. Within 20 seconds, the UPS display should show

4. Turn the pre-charge/discharge switch to the pre-charge position and hold it until the LED turns off.

5. Switch the DC disconnect (DCD) “ON.”

6. Press the green “on” button located inside the front door of the UPS. The UPS display should show

7. Program the unit into static bypass operation: a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn static bypass operation on. The display should show

operation

8. Switch the UPS bypass switch to “UPS.”

9. Program the unit to normal operation:

Normal operation load power xx%

**Stand-by**

Bypass operation: OFF

Bypass

a. Press to access the user parameters. b. Press the or key until the display shows c. Press to switch the bypass operation off. The display should show

operation load power xx%

Bypass operation: ON

602 Startup from Maintenance Bypass

for Units with a BEST-Supplied Three-Breaker MBC

1. 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.”



The UPS maintenance bypass breaker (MBB) should be “ON.”



The DC disconnect (DCD) should be “OFF.”



2. Switch the UPS input breaker (UIB) “ON.” The UPS display should show

xxkVA xxxV

, and an audible alarm should sound.

Normal

System type

3. Within 20 seconds, the display should show

**Stand-by**

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Planning and Installation Manual

4. Turn the pre-charge/discharge switch to the pre-charge position and hold it until the LED turns off.

5. Switch the DC disconnect (DCD) “ON.”

6. Press the green “on” button located inside the UPS front door. The UPS display should show

Normal operation load power xx%

7. Program the UPS into static bypass operation: a. Press to access the user parameters. b. Press the or key until the display shows c. Press to turn bypass operation on. The display should show

operation

Bypass operation: OFF

Bypass

8. Switch the UPS output breaker (UOB) “ON.”

9. Switch the maintenance bypass breaker (MBB) “OFF.”

10.Program the unit to normal operation: a. Press to access the user parameters. b. Press the or key until the display shows

Bypass operation: ON

c. Press to switch the bypass operation off. The display should show

operation load power xx%

Section 700: Glossary of Terms and Abbreviations

Normal

See Section 701 for the glossary of terms. See Section 702 for a list of abbreviations.

701 Glossary of Terms

Ampere (Amp):

resistance of one ohm.

British thermal unit (BTU):

of air-free water from 60

Decibel adjusted (dBa):

sound power level of

A unit of electric current equivalent to a steady current produced by one volt applied across a

A unit of heat energy equal to the heat needed to raise the temperature of one pound



85 dBm.



to 61

F at a constant pressure of one standard atmosphere.

A unit used to show the relationship between an acoustic noise source and a reference

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Planning and Installation Manual

Ground (Earth):

equipment is connected to earth or to some conducting body that serves in place of earth.

Load tolerance - symmetrical:

Load tolerance - asymmetrical:

Mains:

center in interior wiring. Synonymous with power source.

Noise attenuation - differential mode:

Noise attenuation - common mode:

Nominal voltage:

Power factor (PF):

times RMS current of an alternating current circuit.

Protective earth (PE):

Static switch:

The conductors extending from the service switch, generator bus, or converter bus to the main distribution

A conducting connection, whether intentional or accidental, by which an electric circuit or

Equally balanced loads on a three-phase system.

Unbalanced loads on a three-phase system.

The ability to attenuate noise, line to line.

The ability to attenuate noise, line to ground and neutral to ground.

The voltage at which a device operates under ideal conditions.

The ratio of the true (real) power to the apparent power: root means-square (RMS) voltage

Synonymous with grounding electrode conductor.

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

Best Power Technology, Incorporated, reserves the right to change specifications without prior notice.

Best UT340, UT3100, UT360, UT380 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual