Connecting To External Panel Boards; Input Cabling And Protection - Liebert Nfinity User Manual

2.3.2

Connecting to External Panel Boards

The following instructions are also shipped attached to the rear of the unit.
Table Below Applies to 4-16kVA Scalable Systems:
Stand-alone UPS or
UPS equipped with a Maintenance Bypass Cabinet (Without Transformer)
Max. System
Load Rating
4kVA
8kVA
12kVA
16kVA
Terminal
Block
Details
UPS With Maintenance Bypass Cabinet (With Transformer)
Single Input Feed: All UPS ratings must use 100A input circuit breaker protection.
Dual Input Feed: See table below.
Input Voltage – 208VAC
Max. Current
Max. System
in UPS mode
Load Rating
4kVA 18 amps
36 amps
8kVA
12kVA 53 amps
70 amps
16kVA
Terminal
Block
Details
Bypass Voltage Selection

INPUT CABLING AND PROTECTION

Input Voltage – 208VAC
Recommended
Max. Current
Input Protection
in UPS mode
Circuit Breaker
18 amps
36 amps
53 amps
70 amps
Recommended
Input Protection
Circuit Breaker
50 amps
50 amps
75 amps
100 amps
Torque Rating: 2.5-3.0Nm (22-26in/lbs)
Bypass Voltage Jumper Position (TB2)
Max. Current
in UPS mode
50 amps
50 amps
75 amps
100 amps
2
Maximum: 35mm (2AWG)
2
Minimum: 16mm (6AWG)
Torque Rating: 2.5-3.0Nm (22-26in/lbs)
UPS Feed
Input Voltage – 240VAC
Max. Current Recommended Input
in UPS mode Protection Circuit Breaker
15 amps
31 amps
46 amps
62 amps
2
Maximum: 35mm (2AWG)
2
Minimum: 16mm (6AWG)
208 VAC
(Factory Default)
Jumper/link
on upper two
screws
13
Input Voltage – 240VAC
Recommended
Input Protection
Circuit Breaker
15 amps 50 amps
31 amps 50 amps
46 amps 75 amps
62 amps 100 amps
Bypass Feed
208V or 240V
Recommended
Input Protection
Circuit Breaker
50 amps
50 amps
75 amps
100 amps
240 VAC
(Field Change)
Jumper/link
on lower two
screws
Installation
100 amps
100 amps
100 amps
100 amps