KU Transformer PAD 750 kVA and Larger Spec (1).pdf
PDF 246 KB Posted
- Solicitation number
- RFP-Little Chute-WI-003
- Issued by
- Outagamie County, Wisconsin
About this file
This is a technical specification document for Kaukauna Utilities (KU) establishing construction standards for transformer pad installations of 750 kVA and larger units. The specification provides detailed engineering requirements for underground transformer basement installations, including concrete pad dimensions, rebar reinforcement, conduit routing, and site preparation procedures. The document specifies a 10-inch thick concrete pad with #5 rebar, a 62" x 20" opening in the basement, 3-inch primary flange connections, and 4-inch service conduit requirements. A critical requirement is that all concrete pads must be inspected by KU at phone number 920-766-5988 prior to being poured. The specification was last updated on January 11, 2020, and modified to KU standards on April 18, 2018, under drawing designation UM1-7C. The document includes cross-reference to detail UM1-7Ca and indicates that certain components, including the transformer basement structure, are provided by KU.
This specification document directly supports the EV Charging Station Installation project in Little Chute, Wisconsin, which includes a 750 kVA utility transformer with combined CT and meter socket coordination with Kaukauna Utilities. The transformer pad specification ensures proper electrical infrastructure installation for the project's power requirements, which must accommodate a 625 kVA Tesla V4 Supercharger Power Cabinet operating at 480V AC input. The specification establishes clear construction standards and inspection protocols necessary for regulatory compliance and safe integration with KU's electrical distribution system. All work must adhere to these engineering standards and secure KU approval before concrete placement to ensure system compatibility and operational reliability.
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Text version
KAUKAUNA
U T I L I T I E S
2. MUST BE INSPECTED BY KU (920-766-5988) PRIOR TO BEING POURED.
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4" PVC - 3' MINIMUM PAST CONCRETE
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MARK END WITH A LATH
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STEEL 90%%D SWEEP
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OPENING IN
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BASEMENT
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CONCRETE PAD
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WITH #5 REBAR
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10" THICK
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FILLED WITH
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SAND
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OPENING IN
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BASEMENT
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3%%C PRIMARY
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FLANGE
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4" SERVICE
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CONDUIT AS
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REQUIRED BY
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REVISION
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NO
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BY
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CONSTRUCTION UNIT NAME
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BASEMENT FOR
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DWN BY
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DATE
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DATE
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TRANSFORMERS
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BY
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DATE
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CHECKED
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UM1-7C
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750 KVA AND
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LARGER
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MODIFIED TO KU STANDARDS
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MJB
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SOIL/DIRT
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TOP SOIL
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SAND
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NOTE: LIGHT
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MECHANICAL
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TAMPPING
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TRANSFORMER
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BASEMENT
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PROVIDED BY KU
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4" BASEMENT
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1. SEE DETAIL ON UM1-7Ca
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PHONE:920-766-5988
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CUSTOMER
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NOTES:
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UPDATED DRAWING STANDARD
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DAP
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| Sheets and Views |
| UM1-7C |
File details come from the government source that posted it. Updated .