SOMERSET SOLAR PROJECT - 345/34.5kV SUBSTATION General Plan - Preliminary Drawings

Oct 24, 2026

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Preliminary drawing set for the Somerset Solar Project covering a 345/34.5kV electrical substation. The attachment includes facility substation drawing elements such as switching one-line diagrams, grounding plans, control building layouts, and elevation views. It defines construction notes (tubular extruded seamless bus pipe material, leveling nuts, equipment mounting on pads), provides legend items, and states minimum clearance requirements for 345kV and 34.5kV systems. Drawing revisions indicate permitting issuance under 94-C permit.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages7

Reading Time18 min

AccessFree to download

Preliminary facility substation drawings

Notes and construction requirements

Legend and equipment elements

Minimum clearance requirements

Drawing index and sheet descriptions

Permit/issuance and revision information

Attachment 9: Facility Substation Drawings | | 345kV OH CONNECTION TOKINTIGH SUBSTATION
(APPROX. 159 FT)
| | NOTES | | | | | --- | --- | --- | --- | --- | --- | --- | | | | | 1. TUBULAR BUS SHALL BE EXTRUDED, SEAMLESS BUS PIPE MADE OF 6063-T6 ALLOY, SCHEDULE 40.
2. PHASING ARRANGEMENT TO BE CONFIRMED BASED ON THE TRANSMISSION LINE DESIGN.
3. LEVELING NUTS SHALL BE USED ON ALL STEEL STRUCTURES.
4. EQUIPMENT SHALL BE MOUNTED DIRECTLY ON PADS.
5. EQUIPMENT RATINGS SUBJECT TO CHANGE BASED ON STUDIES RESULTS.
6. DESIGN IS PRELIMINARY AND SHALL BE FINALIZED AT DETAILED DESIGN PHASE. | | | | | | | | LEGEND | | | | | | | | | LIGHT (STRUCTURE)
SWITCH OPERATOR-MOTOR
SWITCH OPERATOR-WORM GEAR
FENCE
4'-0" x 6'-0" SWITCH GROUNDING MAT
BURIED CABLE | | | | | | | MINIMUM CLEARANCE REQUIREMENT | | | | | | | | 345kV MINIMUM CLEARANCE (1300kV BIL):
LIVE PARTS: Ø-G=106"
Ø-Ø=119"
TO GRADE: 18'-0" (BUS)
30'-0" (DRIVEWAY)
34.5kV MINIMUM CLEARANCE (200kV BIL):
LIVE PARTS: Ø-G=13"
Ø-Ø=18"
TO GRADE: 10'-0" (BUS)
22'-0" (DRIVEWAY) | | | | | | | | DRAWING NUMBER | | DRAWING DESCRIPTION | | | | | | HV-E.02.01 | | 345/34 .5kV SUBSTATION SWITCHING
ONE-LINE DIAGRAM | | | | | | HV-P.08.01 | | 345/34 .5kV SUBSTATION GROUNDING PLAN | | | | | | HV-P.14.01 | | 345/34 .5kV SUBSTATION CONTROL BUILDING
LAYOUT | | | | | | HV-P.02.01 | | 345/34 .5kV SUBSTATION 345kV ELEVATION
VIEW | | | | | | HV-P.02.02 | | 345/34 .5kV SUBSTATION 34.5kV ELEVATION
VIEW | | | | | | HV-P.15.01 | | 345/34 .5kV SUBSTATION CONTROL BUILDING
ELEVATION | | | | | | | | | | | | |
ISSU TF-INONLY | | | | | AES Titleblock 22X34 v210319 | | | | | | | --- | --- | --- | --- | --- | |
IT IS A VIOLATION OF THE NEW YORK STATE EDUCATION LAW, ARTICLE 145, FOR ANY PERSON, UNLESS UNDER THE DIRECTION OF A NEW YORK STATE LICENSED PROFESSIONAL ENGINEER, TO ALTER AN ITEM ON THIS DOCUMENT IN ANYWAY. | | | | | | | | | | | | | | | | | | KEY PLAN: | | | | | | | | | | | | REVISIONS: | | | | | | NO. | DATE | DESCRIPTION | | | | 0 | 03/08/2023 | ISSUED FOR 94-C PERMIT | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PROJECT TITLE: | | | | | | SOMERSET SOLAR PROJECT | | | | | | PROJECT LOCATION: | | | | | | LAKE ROAD, SOMERSET NY | | | | | | SHEET TITLE & DESCRIPTION: | | | | | | 345/34 .5kV SUBSTATION | | | | | | GENERAL PLAN | | | | | | PROJ
NUM: | | SU20.0012 | | | | DES: MIKE MAILLE | | | | | | DWN: MIKE MAILLE/KRINA GANDHI | | | | | | CHK: AZIN SHAHAB | | | | | | APV: ZHONG BING SHEN, P. E. | | | | | | DATE: 02/17/2023 | | | | | | SCALE AT 22" x 34":
0 8' 16' 24' 32'

1/16" = 1'-0" | | | | | | SHEET NO:
HV-P.01.01 | | | REV:
0 | | | | | | | | | v210319 | |
13'-112"
38'-10"
28'
1"
25'-8
2
18'-1 112"
1" 25'-4
2
19'-8"
X
8'-6"
5'-7"
X X X
℄ TRANSFORMER
345kV BUS SUPPORT ℄
345kV BREAKER ℄
345kV CCVT ℄
345kV SWITCH ℄
ARREST ERS
℄
345kV DEAD END ℄ | | NOTES | | | | --- | --- | --- | --- | --- | --- | --- | | AES Tit leblock 22X34 | | | | 1. THIS IS A PRELIMINARY ELEVATION VIEW AND IS FOR PERMITTING PURPOSES ONLY.
2. DESIGN IS PRELIMINARY AND SHALL BE FINALIZED AT DETAILED DESIGN PHASE.
3. REFER TO DETAIL 7 ON SHEET C.10.05 | | | | | | | | LEGEND | | | | | | | |
LIGHT (MAST/DEADEND)
MATERIAL ITEM OR SUB ITEM NUMBER
| | | | | | | | MINIMUM CLEARANCE REQUIREMENT | | | | | | | | 345kV MINIMUM CLEARANCE (1300kV BIL):
LIVE PARTS: Ø-G=106"
Ø-Ø=119"
TO GRADE: 18'-0" (BUS)
30'-0" (DRIVEWAY)
34.5kV MINIMUM CLEARANCE (200kV BIL):
LIVE PARTS: Ø-G=13"
Ø-Ø=18"
TO GRADE: 10'-0" (BUS)
22'-0" (DRIVEWAY) | | | | | | | | DRAWING NU

FAQs

What project and facility are these drawings for?

They are for the Somerset Solar Project and its 345/34.5kV substation facility, including general plan and related elevation and plan views.

What construction and design notes are specified?

The drawings specify preliminary design status, confirmation of phasing based on transmission line design, use of leveling nuts on steel structures, equipment mounted directly on pads, and ratings subject to study results.

What minimum clearance requirements are listed?

Minimum clearance values are provided for 345kV and 34.5kV systems, including live part to grade and live part to live part clearance distances with specified assumptions (e.g., BIL conditions).

Oct 24, 2026

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