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TranSystems Corporation - LGM Construction

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

SECTION 16440 - LOW-VOLTAGE TRANSFORMERS<br />

PART 1 - GENERAL<br />

1.1 SUMMARY<br />

A. This Section includes the following types of dry-type distribution transformers rated 600 V and less, with<br />

capacities up to 150 KVA.<br />

1.2 SUBMITTALS<br />

A. Product Data: For each product indicated.<br />

B. Shop Drawings: Indicate dimensions, weights, and wiring diagrams.<br />

C. Manufacturer Seismic Qualification Certification: Submit certification that transformers, accessories, and<br />

components will withstand seismic forces.<br />

PART 2 - PRODUCTS<br />

2.1 MANUFACTURERS<br />

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:<br />

1. Eaton Electrical Inc.; Cutler-Hammer Products.<br />

2. General Electric Company.<br />

3. Square D; Schneider Electric.<br />

2.2 GENERAL TRANSFORMER REQUIREMENTS<br />

A. Description: Factory-assembled and -tested, air-cooled units for 60-Hz service.<br />

B. Cores: Grain-oriented, non-aging silicon steel.<br />

C. Coils: Continuous windings without splices except for taps.<br />

2.3 DISTRIBUTION TRANSFORMERS<br />

A. Comply with NEMA ST 20 “Dry-Type Transformers for General Applications”, and list and label as<br />

complying with UL 1561 “Dry-Type General Purpose and Power Transformers”.<br />

B. Provide transformers that are constructed to withstand seismic forces.<br />

C. Cores: One leg per phase.<br />

LOW-VOLTAGE TRANSFORMERS 16440 - 1

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