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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

D. Enclosure: Ventilated, NEMA 250 “Enclosures for Electrical Equipment (1000 Volts Maximum) ”, Type 2,<br />

unless otherwise noted.<br />

1. Core and coil shall be encapsulated within resin compound, sealing out moisture and air.<br />

E. Transformer Enclosure Finish: Comply with NEMA 250 “Enclosures for Electrical Equipment (1000 Volts<br />

Maximum) ”.<br />

1. Finish Color: Gray.<br />

F. Taps for Transformers – Minimum six 2% full capacity, two above and four below rated voltage.<br />

G. Insulation Class: 220 deg C, UL-component-recognized insulation system with a maximum of 150 deg C<br />

rise above 40 deg C ambient temperature.<br />

H. Energy Efficiency for Transformers Rated 15 kVA and Larger:<br />

1. Complying with NEMA TP 1 “Guide for Determining Energy Efficiency for Distribution<br />

Transformers”,<br />

Class 1 efficiency levels.<br />

2. Tested according to NEMA TP 2 “ Standard Test Method for Measuring the Energy Consumption of<br />

Distribution Transformers”.<br />

2.4 IDENTIFICATION DEVICES<br />

A. Nameplates: FedEx EPN-compliant nameplate. Nameplates are specified in Division 16 Section<br />

"Electrical Identification."<br />

PART 3 - EXECUTION<br />

3.1 INSTALLATION<br />

A. Install wall-mounting transformers level and plumb with wall brackets fabricated by transformer<br />

manufacturer.<br />

1. Brace wall-mounting transformers as specified in Division 16 Section "Electrical Supports and<br />

Seismic Restraints."<br />

3.2 FIELD QUALITY CONTROL<br />

A. Perform tests and inspections.<br />

B. Tests and Inspections:<br />

1. Perform visual and mechanical inspections and electrical tests.<br />

LOW-VOLTAGE TRANSFORMERS 16440 - 2

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