Best UT340, UT3100, UT360, UT380 Installation Manual

U N I T Y / I

Three-Phase Uninterruptible Power Systems

UT340, UT360, UT380, UT3100

60 Hz

™

Planning and

Installation Manual

LTM-0357A
Copyright 1995, Best Power Technology, Inc.

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

i

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

ii

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

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

1

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.

2

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%

5

±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

250
150

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

150
125

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.

o

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

3

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 -

1

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

2

3

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.

o

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

1

60

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

96

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

3

/hour) 706.8 (1200) 706.8 (1200)

o

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

o

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

60

120

3.16 (10,778)

1.86 (6333)

2.53 (8622)

1.48 (5067)
95

97

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.

4

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

6

- 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

o

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

5

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

1

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

2

3

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.

o

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

1

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

3

/hour) 706.8 (1200) 706.8 (1200)

o

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

o

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

60

120

3.33 (11,377)

2.47 (8445)

2.67 (9101)

1.98 (6756)
96

97

4.17 (14,221)

3.09 (10,556)

3.33 (11,377)

2.47 (8445)

93
93
91
88

60

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.

6

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.

7

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.



8