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Liebert Power Distribution Units (PDU)

• Liebert Precision Power Center (PPC)
• Liebert Remote Distribution Cabinet (RDC)
• Liebert Static Transfer Switch/PDU (STS2/PDU)

1.- The Liebert Precision Power Center (PPC):

Options include branch circuit monitoring system, harmonics mitigation, surge suppression, combination of power distribution and automatic switching (see STS2/PDU).

The Liebert Precision Power Center (PPC) brings you a distribution system that is both secure and easily expandable (15-150kVA) for top-entry, (15-225kVA) for bottom-entry computer grade grounding: the PPC unit establishes a single point ground for the critical load (copper windings transformer 480v. input, 120/208Y output secure distribution and circuit identification: individually protected 225A panelboards with plug-in or bolt-on breakers. Each breaker has a tag ID, each output cable is labeled at each end non-linear load compatibility: the PPC units can accommodate moderate levels of harmonic currents. If severe levels of harmonics are anticipated, K-Factor transformers, and multi-output transformers option for harmonic current cancellation are available. on-site power monitoring: True RMS measurements Autoscan of all parameters Adjustable alarm thresholds Programmable custom alarms Battery-backed alarm memory Summary alarm contact Options: An expansion cabinet can be placed adjacent to Liebert PPC, adding up to six additional panel boards. Transient voltage surge suppression (TVSS) is available for increased protection from damaging voltage surges. Redundant Liebert PPC configurations are available for high-availability, fault-tolerant applications including: dual-input breakers, dual-transformers, and static transfer switches. K20 transformer safely withstands high harmonic currents associated with electronic loads without derating. Liebert PPC: PDU Brochure Liebert PPC: top-entry Brochure Cables & Receptacles for PDU's [Request a quote]

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2.- The Liebert Remote Distribution Cabinet (RDC):

The Remote Distribution Cabinet (RDC) is the simplest way to wire a colocation facility or internet data center. It extends the functionality of the PDU by packaging 168 poles (four complete panelboards) in a 24" x 24" stand-alone cabinet. Unlike standard Liebert Precision Power Center (PPCs), the RDC has no internal isolation transformer and requires 4-wire-plus-ground input from a PPC or other transformer. Product Features: 168 Breaker Poles in a 24" x 24" Cabinet Unique 42-Pole Inline Panelboards Unobstructed Wiring Access for Ease of Installation Complete Isolation and Maintainability Single, dual or four-input configuration Optional clear door Optional current monitoring panel Liebert RDC Brochure Cables & Receptacles for PDU's [Request a quote]

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3.- The Liebert Static Transfer Switch/PDU (STS2/PDU):

The STS/PDU includes two isolation transformers connected to a solid-state, three-pole, dual-position static transfer switch designed to automatically and manually switch between two synchronized three-phase AC power sources without an interruption of power to the load longer than 4-milliseconds (1/4 cycle) Product Features: true dual-bus power distribution computer-grade grounding, fully compatible with non-linear loads built-in metering and alarm annunciation compact single cabinet 250A, 400A, 600A and 800A capabilities Liebert STS2/PDU Brochure [Request a quote] Options: up to four, 42 poles panelboards for power distribution I-Line panelboard with 10 circuit breakers TVSS for surge protection K20 transformers to safely withstand high harmonic currents

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