Emerson 10-30kVA UPS

Appendix

33

5.3.5 Power Cables

Wiring of power cables is similar to that of single module system (See 2.1 - Power Cabling). The

bypass sources of all modules should be the same, and the outputs should be connected altogether cor-

rectly.

Power cables will be supplied by customer. Power cables to the UPS’s of the 1+N paralleling cabinet

must be routed through either the top or bottom entry access of the UPS.

For systems using a parallel cabinet, see Figures 36 and 38 through 44 for power cable terminations.

5.3.6 Parallel Control Cables

Parallel System Control Cables

Make the connections listed below on the parallel logic board (M3) inside the NX. (See Figure 30 for

the location of the parallel logic board):

Shielded and double-insulated control cables available in lengths of up to 100 feet (30m) must be

interconnected in a ring configuration between UPS modules as shown below. The ring configuration

ensures high reliability of the control (refer to Figure 23).

See Figure 25 for dry contacts control cable wiring diagram.

Figure 23 Connecting '1+N' system parallel control cables

Auxiliary Dry Contact Cables

The external output breaker of each UPS must have Normally Open auxiliary contacts. These con-

tacts must be wired to connector X3 on the Parallel Logic Board (M3). See Figure 24.

NOTE

The length and specifications of power cables including the bypass input cables and UPS

output cables should be the same, thus the load can be shared evenly in bypass mode.

X1-1 X1-2

X2-2 X2-1

Parallel Boa rd

X4

X3 P5

P3

P4 P1

P2

X1-1 X1-2

X2-2 X2-1

Parallel Board

X4

X3 P5

P3

P4 P1

P2

X1-1 X1-2

X2-2 X2-1

Parallel Board

X4

X3 P5

P3

P4 P1

P2

X1-1 X1-2

X2-2 X2-1

Parallel Board

X4

X3 P5

P3

P4 P1

P2

1 2 3 4

UPS

Interconnecting

Cables

Contents

Main Page TABLE OF CONTENTS Page FIGURES TABL ES IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS !WARNING Battery Cabinet Precautions GLOSSARY OF SYMBOLS ! i 1.0 I 1.1 External Inspections 1.2 Internal Inspections 1.2.1 Storing for Delayed Installation 1.3 Preliminary Checks 1.3.1 Identification 1.4 UPS Location 1.4.1 Positioning the UPS 1.4.2 Environmental Considerations 1.5 Considerations in Moving the NX Final Position 1.6 Mechanical Considerations 1.6.1 Clearances 1.6.2 Floor Installation 1.6.3 Cable Entry 10-30kVA UPS System Composition NX NX 2.0 ELECTRICAL CONNECTIONS 2.1 Power Cabling 2.1.1 Cable Rating Lug Size and Torque Requirements 2.1.2 UPS Input Configuration 2.1.3 Cabling Guidelines 2.1.4 Cable Connections B 2.1.5 Safety Ground 2.1.6 Protective Devices UPS Rectifier and Bypass Input Supply System Output 2.1.7 Cabling Procedure Common Input Connections Dual Input Connections Output System ConnectionsEnsure Correct Phase Rotation Internal UPS Battery Connections 2.2 Control Cables 2.2.1 Monitor Board Features Figure 7 Auxiliary terminal block detail (Monitoring Board) 2.3 Dry Contacts The UPS provides input dry contacts and output dry contacts. 2.3.1 Input Dry Contacts There are several input dry contacts at the X3 slot. Figure 8 Input dry contacts Table 1 Input dry contacts at X3 2.3.2 Maintenance Bypass Cabinet Interface 2.3.3 BCB Box Interface 2.3.4 Output Dry Contacts 2.3.5 EPO InputOptional Firmware Before M200 Firmware M200 or Later 3.0 BATTERY INSTALLATION 3.1 Introduction 3.2 Safety 3.3 UPS Batteries 3.4 External Battery Cabinet Installation 3.4.1 Matching Battery Cabinets 3.4.2 Connecting the Batteries Figure 13 Narrow battery cabinet, 27 in. (690mm) - rear view Figure 14 Wide battery cabinet, 57 in. (1488mm) - front view 3.4.3 Installation Considerations Figure 15 Internal cable wiring from battery cabinet to Liebert NX Figure 16 Battery tray and supports 3.4.4 Connecting the Battery Cabinet to the UPS 3.5 Non-Standard Batteries Maintenance Bypass Cabinet 25 4.0 MAINTENANCE BYPASS CABINET 4.1 Bypass Switch 4.2 Normal (UPS) Mode 4.3 Bypass Mode 4.4 Maintenance Mode 4.5 Locating the Cabinet 4.6 Cable Installation 4.6.1 Wiring Preparation 4.6.2 Power Cable Installation 4.6.3 Input/Output Wiring Page 4.7 Bolting Cabinets Together 5.0 O 5.1 Load Bus Synchronization 5.1.1 Performance Requirements 5.1.2 DBS Cable and Settings 5.2 Configuring Parallel System Operation 5.2.1 General 5.2.2 Features of Parallel System 5.2.3 Operating Principles Redundancy Paralleling 5.2.4 Operation Modes Summary 5.3 Installing Parallel System 5.3.1 Conditions for Parallel System 5.3.2 Cabinet Installation 5.3.3 Preliminary Checks 5.3.4 Protective Devices UPS Appendix 34 Figure 24 Auxiliary dry contact cables for output breaker in multi-module system Q1Ext Q2Ext QnExt Input Distribution UPS 1 UPS 2 UPS N To Load Page 5.4 Battery Circuit Breaker Box Options 37 Figure 27 Battery circuit breaker box connections J10.3 Bottom View Midpoint Busbar Detail J10.2 6.0 UPS S 6.1 Conformity and Standards 6.3 UPS Mechanical Characteristics 6.2 UPS Environmental 6.4 UPS Electrical Characteristics Table 10 UPS terminal 6.4.1 Battery Manufacturers and Models 6.4.3 DC Intermediate Circuit 6.4.2 Input Rectifier Table 11 Approved batteries Table 12 Rectifier input power 6.4.4 Inverter Output 6.4.5 Bypass Input Table 14 Inverter output Table 15 Bypass input 7.0 INSTALLATION DRAWINGS Figure 29 Dimensions continuedtop and bottom views Figure 30 Main componentstypical unit Front View (with door open) Page Page -N+ TOP LAYER MIDDLE LAYER BOTTOM L AYE R Page Page Figure 36 NX 1+1 parallel cabinet interconnections Table 18 Liebert-supplied interconnect wiring 1+1 Parallel Cabinet (Front View Without Front Door and Panel) Page Page Page UPS Module Left Side View (without side panel) Page Page Page Page Page 8.0 SPECIFICATIONS AND TECHNICAL DATA 8.1 Lug Size and Torque Requirements Table 28 Battery torque rating Table 29 Maintenance bypass cabinet electrical data (single input) Table 30 Maintenance bypass cabinet electrical data (dual input) Table 29 Maintenance bypass cabinet electrical data (single input) (continued) Table 31 Multi-module bypass cabinet electrical data Table 30 Maintenance bypass cabinet electrical data (dual input) Page Page Page Page Page Table 32 Maintenance bypass cabinet lug sizes Table 33 Battery cabinet physical characteristics Table 32 Maintenance bypass cabinet lug sizes (continued) Table 34 Maintenance Bypass Cabinet weights 8.2 Cable Lengths: Floor to Connection Point Inside UPS Table 35 Maintenance bypass cabinet dimensions Table 36 Multi-module paralleling cabinet dimensions Table 37 Distance to connection points on the NX UPS Page Page Page Ensuring The High Availability 0f Mission-Critical Data And Applications. Technical Support / Service Locations