8-18 kVA Connections

CAUTION: A qualified electrician must review and - approve the customer-supplied wiring, circuit breaker(s), power outlet, and intended loads. Ensure correct line, neutral, and ground connections, and that phase rotation is phase A leads phase B (leads phase C, if third phase is used). See Table #5 in the Appendix & Site Planning Data.

See Table #1 to the right and the figures on the following pages for terminal details and block diagrams of UPS with both single and optional dual input. Use 75 degrees C copper wire in compliance with the NEC (NFPA 70) and all applicable local codes.

Remove conduit-landing plates from UPS. Punch conduit holes in these plates for both input and output connections. Tighten wire connections according to unit torque specification labels and Table #1.

Input

The UPS accepts two-phase or three-phase power.

Output

8 - 12 kVA: Hardwire output power to a customer-supplied

panelboard, or to optional distribution units. The Configurable Distribution unit (in conjunction with Load

Modules) provides receptacle distribution. See Distribution in the Options section.

15 - 18 kVA: Hardwire output power to a customer- supplied panelboard.

DB25

External Power

Communications Connector

Management Load Module

(RS232, AS/400, LANs)

Communications Connector

Optional

REPO

Connection

SNMP

 

Interface

 

 

Bypass

 

Switch

Variable

 

Speed

 

Fan

External

 

 

Battery Cabinet

 

Connector

Battery

 

Circuit

 

Breaker

 

 

Output

 

Circuit

 

Breaker

Input

Output Conduit

Circuit

Breaker

Landing Area

 

Input Conduit

8-12 kVA REAR VIEW

Landing Area

 

Table #1 – Compression Field Connections

Connection

Wire Size

Torque (lb.in)

 

Range (AWG)

 

8 –12 kVA Liebert UPStation S™

AC Input

#14 - #2.0

#2.0 - #6 = 45

 

#8 = 40

 

#10 - #14 = 35

Optional Dual AC Input

AC Output

 

 

 

 

 

Ground and GEC

#14 - #6

 

15 - 18 kVA Liebert UPStation S™

 

AC Input

 

 

Optional Dual AC Input

 

#2.0 - #6 = 45

AC Output

#14 - #2/0

#8 = 40

Optional Ext. Battery

 

##10 - #14 = 35

Cabinet

 

 

Ground and GEC

 

 

1581EBD External Battery Cabinet

 

 

 

#2.0 - #6 = 120

Input DC and Ground

#14 - #2/0

#8 = 40

 

 

#10 - #14 = 35

NOTES:

8 – 18 kVA systems require a local Grounding Electrode per NEC 250.

Minimum size grounding conductors per NEC. Parity sized ground conductors recommended. Size Neutral conductors for full capacity per NEC.

Refer to NEC Article 250 and local codes for proper wire sizing and grounding practices.

UPS Output is a separately derived source when operating on inverter. Output Neutral is bonded to equipment ground internal to the UPS.

 

External Power

 

 

Optional DB25

 

Management

 

Optional

 

 

Communications

 

Load Module

 

 

Bypass

SNMP

Connector

 

Communications

 

Switch

Interface

(RS232, AS/400, LANs)

REPO

Connector

 

 

 

 

 

 

 

Connection

 

 

 

 

Battery

 

 

 

 

Circuit

 

 

 

 

Breaker

 

 

 

 

Input &

 

Terminal

 

Output

 

Block

 

Circuit

Output

 

 

 

 

 

Breaker

Conduit

 

 

 

 

Access

 

 

Landing

 

 

Input

 

Covers

 

Plate

 

 

 

 

 

Circuit

 

 

 

 

Breaker

External

Battery

Conduit

Landing

Plate

Casters

Leveling Feet

Bottom Conduit Access Area

15 - 18 kVA

Rear View

9

Page 9
Image 9
Liebert VM18000, VM12000 user manual UPS accepts two-phase or three-phase power

VM18000, VM12000 specifications

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