Liebert Nfinity UPS With Maintenance Bypass Cabinet (With Transformer), INPUT CABLING AND PROTECTION

Installation

2.3.2Connecting to External Panel Boards

The following instructions are also shipped attached to the rear of the unit.

INPUT CABLING AND PROTECTION

Table Below Applies to 4-16kVA Scalable Systems:

Stand-alone UPS or

UPS equipped with a Maintenance Bypass Cabinet (Without Transformer)

	Input Voltage – 208VAC		Input Voltage – 240VAC
	Max. Current	Recommended	Max. Current	Recommended
Max. System		Input Protection		Input Protection
	in UPS mode		in UPS mode
Load Rating		Circuit Breaker		Circuit Breaker
4kVA	18 amps	50 amps	15 amps	50 amps
8kVA	36 amps	50 amps	31 amps	50 amps
12kVA	53 amps	75 amps	46 amps	75 amps
16kVA	70 amps	100 amps	62 amps	100 amps
Terminal		Maximum: 35mm2 (2AWG)
Block		Minimum: 16mm2 (6AWG)
Details		Torque Rating: 2.5-3.0Nm (22-26in/lbs)

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.

			UPS Feed		Bypass Feed
	Input Voltage – 208VAC		Input Voltage – 240VAC		208V or 240V
	Max. Current	Recommended	Max. Current	Recommended Input	Recommended
Max. System	in UPS mode	Input Protection	in UPS mode	Protection Circuit Breaker	Input Protection
Load Rating		Circuit Breaker			Circuit Breaker
4kVA	18 amps	50 amps	15 amps	50 amps	100 amps
8kVA	36 amps	50 amps	31 amps	50 amps	100 amps
12kVA	53 amps	75 amps	46 amps	75 amps	100 amps
16kVA	70 amps	100 amps	62 amps	100 amps	100 amps
Terminal			Maximum: 35mm2 (2AWG)
Block			Minimum: 16mm2 (6AWG)
Details		Torque Rating: 2.5-3.0Nm (22-26in/lbs)
		Bypass Voltage Jumper Position (TB2)
Bypass Voltage Selection			208 VAC	240 VAC
			(Factory Default)	(Field Change)

Jumper/link on upper two screws

Jumper/link on lower two screws

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