Best Power UNITY/I UT310 Planning And Installation Manual

Three-phase uninterruptible power systems
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U N I T Y / I
Three-Phase Uninterruptible Power Systems
UT310, UT315, UT320, UT330
60 Hz
Planning and
Installation Manual
LTS-0371D
Copyright 1995, Best Power Technology, Incorporated

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  • Page 1 U N I T Y / I ™ Three-Phase Uninterruptible Power Systems UT310, UT315, UT320, UT330 60 Hz Planning and Installation Manual LTS-0371D Copyright 1995, Best Power Technology, Incorporated...
  • Page 2 UT310, UT315, UT320, and UT330 Planning and Installation Manual IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for the UNITY/I™ three-phase UPS. The installation and use of this product must comply with all national, federal, state, municipal, or local codes that apply.
  • Page 3: Table Of Contents

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Table of Contents List of Tables and Figures ..........ii 100: Introduction .
  • Page 4 UT310, UT315, UT320, and UT330 Planning and Installation Manual List of Tables and Figures Tables UT310, UT315 AC Input Specifications ........4 UT310, UT315 AC Output Specifications .
  • Page 5: Introduction

    UT310, UT315, UT320, and UT330 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 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.
  • Page 6: 101 Ups Footprints

    UT310, UT315, UT320, and UT330 Planning and Installation Manual UPS Footprints See Figure 1 for a footprint of UPS model UT310 or UT315. Figure 2 for a footprint of UPS model UT320 or UT330. Figure 1: UT310, UT315 Footprint with Conduit Connection Kit (Top View) Inches Millimeter 23.6...
  • Page 7: Ut320, Ut330 Footprint With Conduit Connection Kit (Top View)

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 2: UT320, UT330 Footprint with Conduit Connection Kit (Top View) CONDUIT CONNECTION CABLE ENTRY Inches Millimeters For service clearance and air flow, allow a minimum of 3 feet (914 mm) at the front, 3 feet (914 mm) at the top, and 6 39.4 1000 inches (152 mm) at the back.
  • Page 8: 102 Specifications For The Ut310 And Ut315

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Specifications for the UT310 and UT315 Tables 1 - 5 contain specifications for UPS models UT310 and UT315. Table 1: UT310, UT315 AC Input Specifications UT310 UT315 Voltage 3 x 208Y/120 3 x 480Y/277 3 x 208Y/120 3 x 480Y/277...
  • Page 9: Ut310, Ut315 Dc Input/Battery Specifications

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Table 3: UT310, UT315 DC Input/Battery Specifications UT310 UT315 Nominal DC current - Amps UL rating of terminal blocks - AWG 14 - 00 14 - 00 Nominal DC voltage Nominal number of cells Factory-set float charge voltage Charger current limit - Amps Inverter efficiency - %...
  • Page 10: 103 Specifications For The Ut320 And Ut330

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Table 5: UT310, UT315 Weight Specifications UT310 UT315 UPS weight without batteries, with conduit 749 (340) 901 (409) connection kit - lbs (kg) Floor loading - UPS without batteries, with 5.69 (39.22) 6.84 (47.18) conduit connection kit - lbs/in (kPa)
  • Page 11: Ut320, Ut330 Ac Output Specifications

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Table 7: UT320, UT330 AC Output Specifications UT320 UT330 Voltage 3 x 208Y/120 3 x 480Y/277 3 x 208Y/120 3 x 480Y/277 Rated output current - Amps Recommended overcurrent protection - Amps UL rating of terminal blocks L1, L2, L3: 10 - L1, L2, L3: 14 -...
  • Page 12: Ut320, Ut330 General Specifications

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Table 9: UT320, UT330 General Specifications UT320 UT330 Noise attenuation - dB - differential mode - common mode Typical heat dissipation - kW (BTU) - full rated load, normal operation 1.28 (4357) 1.91 (6536) - full rated load, economy mode 0.83 (2844)
  • Page 13: 104 Receiving And Moving The Ups

    UT310, UT315, UT320, and UT330 Planning and Installation Manual 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.
  • Page 14: 105 Storing The Ups And Batteries

    UT310, UT315, UT320, and UT330 Planning and Installation Manual 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...
  • Page 15: 107 Technical Support

    Planning and Installation Manual 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.
  • Page 16: 201 Installing The Maintenance Bypass Cabinet (Mbc) And Ups

    UT310, UT315, UT320, and UT330 Planning and Installation Manual 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 strongly recommends that a means of bypassing the UPS from the critical load be provided for maintenance.
  • Page 17: Ut310, Ut315 Front View (Covers Removed)

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 3: UT310, UT315 Front View (Covers Removed) Figure 4: UT310, UT315 Wiring Terminations...
  • Page 18: Ut320, Ut330 Front View (Covers Removed)

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 5: UT320, UT330 Front View (Covers Removed) Figure 6: UT320, UT330 Wiring Terminations...
  • Page 19: Ut310 - Ut330 Installation Wiring Diagram, Typical Installation Without External Maintenance Bypass Cabinet, With Internal Batteries

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 7: UT310 - UT330 Installation Wiring Diagram, Typical Installation without External Maintenance Bypass Cabinet, with Internal Batteries NOTE 1: (a) For a UT310 or UT315, see Table 1 ADDITIONAL NOTES: Section 102 for recommended UPS input overcurrent A qualified electrician must install the UPS according...
  • Page 20: Ut310 - Ut330 Installation Wiring Diagram, Typical Installation With Internal Batteries And Maintenance Bypass Cabinet

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 8: UT310 - UT330 Installation Wiring Diagram, Typical Installation with Internal Batteries and Maintenance Bypass Cabinet NOTE 1: Size the mains input overcurrent protection ADDITIONAL NOTES: device per applicable codes. See the table below for A qualified electrician must install the UPS according mains input voltage and current ratings.
  • Page 21: Ut310 - Ut330 Installation Wiring Diagram, Typical Installation With External Batteries And Maintenance Bypass Cabinet

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 9: UT310 - UT330 Installation Wiring Diagram, Typical Installation with External Batteries and Maintenance Bypass Cabinet NOTE 1: Size the mains input overcurrent protection ADDITIONAL NOTES: device per applicable codes. See the table below for A qualified electrician must install the UPS according mains input voltage and current ratings.
  • Page 22 UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 10: External Connection Board Use Class 1 wiring methods. X001 NOT USED NOT USED X005 NOT USED NOT USED X006 X002 NOT USED SUMMARY ALARM IF 1-3 CONNECTED X007 BATTERY OPERATION (30 SECS.
  • Page 23: Communication Interface Board (Option)

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 11: Communication Interface Board (Option) Use Class 1 wiring methods. Not Used To Controller 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...
  • Page 24 UT310, UT315, UT320, and UT330 Planning and Installation Manual Figure 12: Relay Board (Option) Not available on the UT310 and UT315. The relays are shown in the alarm position and correspond to non-energized coils. X002:1 Description Minimum Maximum RELAY BOARD MAINS FAILURE Contact voltage - AC 250 V...
  • Page 25: 202 Installing The External Batteries And Dc Disconnect (Dcd)

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Installing the External Batteries and DC Disconnect (DCD) Some units have optional external batteries in a separate cabinet or rack. 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.
  • Page 26 UT310, UT315, UT320, and UT330 Planning and Installation Manual 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.
  • Page 27 UT310, UT315, UT320, and UT330 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.
  • Page 28 UT310, UT315, UT320, and UT330 Planning and Installation Manual 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.
  • Page 29: 300: Initial Startup And Phase Check

    UT310, UT315, UT320, and UT330 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.
  • Page 30: Dc Fuse Holder

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Open the UPS front door(s). Remove the retaining brackets for the fuse holder containing DC fuses F001, F002, and F003. See Figure Section 201 for location of fuse holder. 6. At the mains AC input panel, switch on the input power to the UPS and maintenance bypass cabinet (MBC).
  • Page 31 UT310, UT315, UT320, and UT330 Planning and Installation Manual 14. Using an open palm, close the fuse holder. 15. If the unit has external batteries: Turn the pre-charge/discharge switch to the “pre-charge” position and hold it until the LED turns off. Switch the battery DC disconnect (DCD) “ON.”...
  • Page 32 UT310, UT315, UT320, and UT330 Planning and Installation Manual 19. 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...
  • Page 33: Clearing The Events Log

    UT310, UT315, UT320, and UT330 Planning and Installation Manual 25. Return the UPS to normal operation mode: Press to access the user parameters. Press the key until the display shows Bypass operation: ON. Press to turn static bypass operation off. The display should show Normal operation load power xx%.
  • Page 34: 500: Shutdown Procedure

    UT310, UT315, UT320, and UT330 Planning and Installation Manual Section 500: Shutdown Procedure 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.
  • Page 35: Startup From Maintenance Bypass

    UT310, UT315, UT320, and UT330 Planning and Installation Manual 6. If the UPS has internal batteries: Open the DC fuse holder and remove the DC fuses (F001, F002, F003). Store the fuses in a safe place. Open the UPS front door and press the green “on” button to discharge the capacitors. To restart the unit, see Section 600, “Startup from Maintenance Bypass.”...
  • Page 36: Glossary Of Terms And Abbreviations

    UT310, UT315, UT320, and UT330 Planning and Installation Manual If the unit has internal batteries, put the DC fuses (F001, F002, F003) into the DC fuse holder. For instructions, see Section 300, steps 11 - Program the unit into static bypass operation: Press to access the user parameters.
  • Page 37: 702 Abbreviations

    DC disconnect switch (may be a separate switch or a switch located on the battery cabinet/rack) Maintenance bypass breaker Maintenance bypass cabinet Main input breaker Main output breaker SKRU Solenoid key release unit UPS input breaker UPS output breaker Best Power Technology, Incorporated, reserves the right to change specifications without prior notice.

This manual is also suitable for:

Unity/i ut315Unity/i ut320Unity/i ut330

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