Page 3 - TABLE OF CONTENTS
i TABLE OF CONTENTS I MPORTANT S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 G LOSSARY O F S YMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.0 G ENERAL D...
Page 4 - ii; AINTENANCE; FIGURES
ii 8.0 M AINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8.1 Proper Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8.2 Scheduled Ma...
Page 5 - SAVE THESE INSTRUCTIONS; UPS and the Maintenance Bypass Cabinet rating label.; WARNING; local electrical codes.
1 I MPORTANT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be closely followed during installation and maintenance of this Maintenance Bypass Cabinet.This product is designed for commercial / industrial use only. This product is not intended fo...
Page 7 - General Description; ENERAL; without special training.; System Description
General Description 3 1.0 G ENERAL D ESCRIPTION Congratulations on your purchase of Liebert’s Nfinity™ Maintenance Bypass Cabinet with Config- urable Output Distribution. As with every Liebert product, we stand behind our quality. If you have any questions concerning this Maintenance Bypass Cabinet,...
Page 8 - Figure 1
General Description 4 Figure 1 Front view Bypass availability indicator (amber) Cooling fans (transformer models only) UPS input power present (amber) UPS output availability indicator (green) Bypass switch (SW1) UPS input switch (SW2) Support bracket Output breaker (CB1)
Page 9 - Figure 2
General Description 5 Figure 2 Rear view (without transformer) Configurable output distribution (optional) Hardwire output (standard) Maintenance bypass input (TB1) UPS output (TB4) Maintenance bypass input (TB2) UPS input (TB3) Support bracket Hardwire output terminal block (TB5)
Page 10 - Figure 3; Hardwire output
General Description 6 Figure 3 Rear view (with transformer) Hardwire output terminal block (TB6) Configurable output distribution (optional) Hardwire output (standard) Maintenance bypass input (TB1) (TB2) UPS output (TB5) UPS input (TB3) Tap selector (TB4) Support bracket
Page 11 - Modes of Operation; ODES; UPS Mode; toward the amber lamp indicates this mode. See; Figure 4; BYPASS MODE; Bypass; ON = AC power supplied to UPS input
Modes of Operation 7 2.0 M ODES OF O PERATION The Nfinity Maintenance Bypass Cabinet is designed to operate in two modes: UPS Mode and Bypass Mode. 2.1 UPS Mode While the Nfinity Maintenance Bypass Cabinet is in UPS Mode, the UPS is supplying the connected load with continuous, high quality AC power...
Page 12 - Major Components; AJOR; Bypass Switch; Other Options; Table 1; 5 Amp Options
Major Components 8 3.0 M AJOR C OMPONENTS The following is a general description of each component and its functions. Please review this section carefully, as it will give you a better understanding as to how the Nfinity Maintenance Bypass Cabi- net operates. 3.1 Bypass Switch The Bypass Switch allo...
Page 13 - Preparation; REPARATION; Inspection; below for dimensional considerations:; Figure 5; Dimensions; Model
Preparation 9 4.0 P REPARATION These installation instructions provide all the information needed for positioning the Nfinity Mainte- nance Bypass Cabinet (including environmental requirements) and for connecting the input and out- put power cables. 4.1 Inspection Upon receiving the Nfinity Maintena...
Page 14 - Unloading; NLOADING; Unloading the Maintenance Bypass Cabinet; CAUTION; Table 2
Unloading 10 5.0 U NLOADING The unit frame is bolted to the shipping pallet to ensure safety. Liebert recommends using a pallet jack to transport the unit to its operating location prior to unbolting the unit. 5.1 Unloading the Maintenance Bypass Cabinet 1. Once the Maintenance Bypass Cabinet is nea...
Page 15 - Stationary Mounting; Mounting bracket
Unloading 11 5.2 Stationary Mounting Additional stability can be added by bolting the mounting brackets (used in shipping) to the floor. For greater stability, use a higher-grade bolt. Refer to the dimensions below when drilling holes for stationary mounting. Mounting bracket on rear of unit 4-3/4&#...
Page 16 - Cable Installation; ABLE; Wiring Preparation; Figure 6; TRANSFORMER MODELS; Cables to be removed; NON-TRANSFORMER MODELS; GEC
Cable Installation 12 6.0 C ABLE I NSTALLATION 6.1 Wiring Preparation Be sure that the unit is not connected to any AC mains power source or UPS before installing any wir- ing to this unit. This Maintenance Bypass Cabinet should be installed by a qualified / certified electri- cian. 6.2 Preparing In...
Page 18 - Removing the Cover Plates; On the back of the Maintenance Bypass Cabinet, cover; Power Cable Installation; Refer to; below when selecting cables.; REPO Connection; Table 3
Cable Installation 14 6.4 Removing the Cover Plates On the back of the Maintenance Bypass Cabinet, cover plates are over the input and output terminals (see illus- tration at right). Remove these using a phillips screw- driver. Keep screws and plates to one side. 6.5 Power Cable Installation Refer t...
Page 19 - Input and Output Wiring; NOTE; Input; Conduit
Cable Installation 15 6.7 Input and Output Wiring To connect the input wiring:1. Locate the input wiring access (see illustration at right). 2. Remove the knockout and pull the three/four input wires through it, allowing some slack for installation. 3. Secure the conduit to the rear panel of the Mai...
Page 20 - Figure 9
Cable Installation 16 Figure 9 Electrical connections—transformer model MBC 120V 120V 208V 240V Common Ground Wire Connection Torque Value: 13 in-lbs Common Ground Wire Connection Torque Value: 120 in-lbs Common Ground Wire Connection Torque Value: 120 in-lbs Common Ground Wire Connection Torque Val...
Page 21 - Figure 10 Electrical connections—non-transformer model MBC
Cable Installation 17 Figure 10 Electrical connections—non-transformer model MBC 120V 120V 208V 240V Common Ground Wire Connection Torque Value: 13 in-lbs Common Ground Wire Connection Torque Value: 120 in-lbs Common Ground Wire Connection Torque Value: 120 in-lbs Common Ground Wire Connection Torqu...
Page 22 - —If feeding the Maintenance Bypass Cabinet from a single; UPS
Cable Installation 18 Figure 11 Connecting Nfinity to Maintenance Bypass with transformer NOTE 1. SINGLE-SOURCE FEED —If feeding the Maintenance Bypass Cabinet from a single source, the input connection may be made to either TB1 or TB2. 2. DUAL-SOURCE FEED —If feeding the Maintenance Bypass Cabinet ...
Page 23 - Input 2
Cable Installation 19 Figure 12 Connecting Nfinity to Maintenance Bypass without transformer NOTE 1. SINGLE-SOURCE FEED —If feeding the Maintenance Bypass Cabinet from a single source, the input connection may be made to either TB1 or TB2. 2. DUAL-SOURCE FEED —If feeding the Maintenance Bypass Cabin...
Page 24 - It is mandatory to connect exactly as shown.
Cable Installation 20 Figure 13 Connecting Maintenance Bypass to GXT10000T-208X ! CAUTION It is mandatory to connect exactly as shown. NOTE 1. SINGLE-SOURCE FEED —If feeding the Maintenance Bypass Cabinet from a single source, the input connection may be made to either TB1 or TB2. 2. DUAL-SOURCE FEE...
Page 26 - Operation; PERATION; Start-Up and Initialization; connected equipment is now powered from the bypass source and; is not protected
Operation 22 7.0 O PERATION 7.1 Start-Up and Initialization To start up the Nfinity UPS while it is connected to the Nfinity Maintenance Bypass:1. Set the Maintenance Bypass switch (SW1) to the UPS position on the Maintenance Bypass Cabinet. 2. Close the UPS source switch (SW2).3. Close the output c...
Page 27 - Maintenance; Proper Care; Replacing Fan Filters—Transformer Models Only; filters when fans are running.; Fan Filters
Maintenance 23 8.0 M AINTENANCE 8.1 Proper Care Keeping your Liebert Nfinity Maintenance Bypass Cabinet operating properly is imperative to opti- mal performance and life of the unit. It is recommended that a certified technician perform preventive and corrective maintenance. Liebert Global Services...
Page 28 - Specifications; PECIFICATIONS
Specifications 24 9.0 S PECIFICATIONS General & Environmental Rating Unit Rating kVA Models NMB1x and NMB4x = 18Models NMB5x and NMB8x = 20 Amps Models NMB1x and NMB4x = 100 maxModels NMB5x and NMB8x = 125 max Safety Standards UL 1778, c-UL Mechanical Dimensions Width In (mm) 9.5 (241) Depth 26....
Page 29 - NOTES
Page 32 - Via Leonardo Da Vinci 8; OWER; VA; SER
The Company Behind the Products With over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its founding in 1965, Liebert hasdeveloped a complete range of support andprotection systems for sensitive electronics: • Environmental systems—close-co...
