Manuals / Brands / Computer Equipment / Power Supply / APC / Computer Equipment / Power Supply

APC 5000 2.8 Connection of power cables for parallel UPS units

1 68

Download 68 pages, 3.16 Mb

34001813EN/AE - Page 24

2. Installation

2.8 Connection of power cables for parallel UPS units

Equipotential bonding between parallel-connected units

Connect the exposed conductive parts (ECP) of the parallel-connected UPS units using an additional earthing cable (not

supplied) with the following characteristics:

- size equivalent to that of the supply cables,

- as short as possible.

Connection of earth cable and tying of cables

Connections must be made according to the diagram below:

N L1 L2 L3N L1 L2 L3L1 L2 L3 N L1 L2 L3N L1 L2 L3L1 L2 L3N L1 L2 L3N L1 L2 L3L1 L2 L3

Main earth

Main earth Additional equipotential

bonding between units.

UPS 1 UPS 3

UPS 2

Contents

Main Introduction Safety Safety rules Special precautions Safety of persons Product safety Foreword Pictograms Document Display E S C D E L VOLT 17 mai 1. Presentation 2. Installation 3. Operation 4. Maintenance 5. Environment 6. Available options 7. Appendices 1.1 MGE UPS cabinet External battery cabinet / auxiliary cabinet 1.2 Inside the UPS cabinet, access to connections Example of version with built-in battery Simplified diagram of power connections Power-connection terminal blocks (version with built-in battery) 1.3 Cabinet layout (normal or false floor) Power-connection terminal blocks (version with external battery) INTN card for auxiliary interconnections of parallel UPS units +- 19 20 21 1.4 User-machine interface 1.5 Relay communication card 2.1 Location 2.2 Layout of cabinets 2.3 Removing the cardboard protecting the batteries In the UPS In the external battery cabinet 2.4 Required protective devices and cable sizes Recommended upstream protection Recommended downstream protection Earth-leakage current Required cable sizes Required cable sizes for parallel UPS installations with an external bypass 2.5 2.5 System earthing arrangements Without differential circuit breaker: TNS upstream and TNS downstream installa tion For separate Normal AC and Bypass AC lines from a single source. With differential circuit breaker: TNC upstream, TNS downstream For separate Normal AC and Bypass AC lines from a single source Installation with upstream IT and downstream TNS For separate Normal AC and Bypass AC lines from a single source Installation with upstream TT and downstream TT (with upstream differential protection) Frequency converter (without Bypass AC input) Upstream and downstream: TT, TN or IT system with neutral distributed AB Upstream and downstream: Neutral not distributed Page Q4S Q3BP Q5N 2.6 Connection of power cables in a single UPS unit Interconnecting the cabinet earths UPS units with common normal and Bypass AC inputs Frequency converter UPS units with separate normal and Bypass AC inputs 2.7 Earth-cable connection for a single unit in a TNC earthing system 2.8 Connection of power cables for parallel UPS units Equipotential bonding between parallel-connected units Connection of earth cable and tying of cables Redundant parallel configuration (maximum two UPS units for Pn) UPS units with common normal and Bypass AC inputs UPS units with separate normal and Bypass AC inputs Frequency converter 14 17 17 18 16 15 18 AB AB 2.9 Connection of the 150 kVA external bypass cabinet 2.10 Connection of the 360 kVA external bypass cabinet 2.11 Connection of the 600 kVA external bypass cabinet 2.12 Auxiliary interconnections between UPS units in parallel configurat ions Redundant parallel configuration (maximum two UPS units) 10 10 12 12 10 10 12 12 Parallel configuration for increased capacity (maximum four UPS units) 11 11 Q3BP Q4S 11 2.13 Connection of general shutdown or emergency power off (EPO) terminal block 7 XMB 08 XMB 07 XMS 06 2.14 Connection of the relay communications card Characteristics of the contacts on the relay communications card. Communications card connection example Adding communication cards 6 5 4 3 2 1 BA carte de communication source 2.15 Running the control/communications cables Parallel UPS 2.16 Power connections for an external battery cabinet 2.17 Assembly and connection of an empty battery cabinet Mounting the battery circuit breaker kit Mounting the shelves and the battery cells 2.18 Control connections for an external battery cabinet + 5 6 XR1 A B C 3.1 Shutting down a single UPS 3.2 Restarting a single UPS ~ 3.3 Shutting down a parallel configuration 3.4 Restarting a parallel configuration 8 Q1 Q4S Q3BP Q5N QF1 13 9 11 IO 3s 39 40 42 41 43 3.6 Operating modes Normal (double conversion) mode ECO mode (single UPS only) 3.7 Load on battery power Transfer to battery power Operating mode Frequency Automatic bypass Battery 3.9 Relay contacts (communications card) 3.10 Display functions ? 4.1 Identification of alarms 4.2 Life Cycle Monitoring (LCM) ? IO 3s 32 4.3 UPS isolation Frequency converter If supplied by the network via the Bypass AC channel: UPS operating in ECO mode If the load is supplied by the UPS with Bypass AC source present: Parallel UPS configuration without external bypass cabinet Shutdown and isolation of the second UPS unit: Shutdown and isolation of the first UPS unit: Parallel UPS configuration with external bypass cabinet Shutdown and isolation of one UPS unit Shutdown and isolation of all the UPS units: 4.4 Return to the normal position Single UPS Frequency converter Parallel UPS configuration without external bypass cabinet Restart the UPS unit for which switch Q3BP (10) is ON and the other switches are OFF. Restart the UPS unit for which all switches are set to OFF. Parallel UPS configuration with external bypass cabinet 4.5 Training centres Schneider Critical Power & Cooling Services 50 Hz training centres Schneider Critical Power & Cooling Services 50- 60 Hz training centre 5. Environment Substances Packing End of life 6. Available options 7.1 Technical sheets Center of gravity Tip angle (to the rear) Electrical characteristics Selection of protection devices 20-30-40 kVA : 80A 60 kVA : 125A 10 I (A) I/In 34001813EN/AE - Page 63 Maximum allowable power for parallel UPS units Without external bypass cabinet: +++ ++ += 3 x Pn Thermal characteristics Page General characteristics of MGE UPS components 7.2 Options IP32 installation 7.3 Glossary