Installation

2.6Electrical Connections

Three-phase electrical service is required for all models in either 208, 230, 460, or 575 V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. Electrical service shall conform to national and local electrical codes. Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to elec- trical schematic when making connections.

A manual electrical disconnect switch should be installed within 5 feet (1.6 m) of the unit in accor- dance with codes, or a factory-supplied disconnect switch may be factory mounted within the unit accessible from the exterior.

! WARNING

Use voltmeter to make sure power is turned off before making any electrical connections.

! CAUTION

Three-phase power must be connected to the unit line voltage terminals in the proper sequence so that scroll the compressor rotates in the proper direction.

Figure 8 Electrical connections

Electric HandyBox* (factory-installed with cover)

Termi nal Bloc k*

(f or cu st om er co nnect io ns )

9

9

10

10

11

14

16

17

18

13

14

12

37C 38C 37B 38B

37

38

24

50

51

55

56

77

78

75 76 82 83 84 85 88 89

91 92 93 94

95 96 97

1

2

3

4

SL-11897Pg10 SL-11898Pg11 SL-11899Pg11 SL-11900Pg10 SL-11901Pg10

1.Electric conduit knockouts on top and bottom of electric box. Knockout size 1-3/4" (44.5 mm).

2.Three phase connection. Electric service connection terminals when factory disconnect is NOT supplied.

3.Three phase connection. Electric service connection terminals when factory disconnect switch is supplied.

4.Factory installed disconnect switch. (Optional).

5.Three phase electric service not by Liebert.

6.Earth ground connection (50/60 Hz). Connection terminal for field-supplied earth grounding wire.

7.Earth ground bar (50 Hz only). Connection terminals with factory ground from each high voltage component for field-supplied earth grounding wire.

8.Control and monitoring section of electric box.

9.Remote unit shutdown. Replace existing jumper between terminals 37 + 38 with normally closed switch having a minimum 75VA, 24VAC rating. Use field-supplied Class 1 wiring. Two additional contact pairs available as an option (labeled as 37B & 38B, 37C & 38C). Replace existing jumper for appropriate pair as done for 37 & 38.

10.Special alarm connections. Field-supplied 24V. Class 1 wiring for special alarm. Connection made by adding normally open contacts between terminals 24 + 50. Optional additional connections available with Advanced or Advanced with Graphics controls and appropriate optional accessories (connections 51, 55, and 56).

11.SiteScan connection. Terminals 77 (-) and 78 (+) are for connection of a 2 wire, twisted pair, communication cable (available from Liebert or others) to optional SiteScan.

12.Remote condensing unit connection. Field-supplied 24V Class 1 wiring to remote condensing unit terminals 1, 2, 3, & 4 from (R2) relay (split system only.)

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Liebert 3000 installation manual Electrical Connections, Electrical connections

3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.