Attachment 3 - 2025 South Side Drawings.pdf
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About this file
This is an electrical one-line diagram for Peterson Air Force Base in Colorado, prepared by The Benham Group Architect-Engineer in Oklahoma City. The diagram was designed in April 1992 under U.S. Army Corps of Engineers contract DACA 45 92-C-L075 for the Centralized Integration Support Facility (Category Code 141-764, Drawing AF 610-31-01).
The electrical system includes a 12.47 kV primary service from Colorado Springs Department of Utilities with metering at 12.5 kV, stepping down to 480Y/277V and 208Y/120V through multiple pad-mounted transformers rated 150 kVA at 5.75% impedance. The distribution includes three unit substations with 3000 ampere buses, 600 ampere air interrupters rated 15 kV, and multiple feeder circuits serving various loads including a 125 kW 480-volt 3-phase emergency generator with automatic transfer switch and bypass isolation transfer switch. Secondary systems include two sanitary sewage lift stations with duplex pump controls, security lighting with 3-phase 200 ampere contactor, antenna power loads rated 500 KW with 3-pole 800 ampere circuit breaker, and distributed loads ranging from 30 KVA to 112.5 KVA. The feeder schedule specifies 20 distinct circuits with wire sizes from #12 through 1000 Kcmil copper conductors in conduit ranging from 1/2 inch to 3.5 inches, with concrete-encased ducts for primary underground cables and transient suppression units on transformer secondaries.
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Text version
3000A. 480V., 3Ø,4W. BUS
K
K
VS
V
288/120V.
D2
2000/2666KVA.,
12470V.-480/277V.,3Ø,4W.
Z=5.75%
600A., 15KV.,
AIR
INTERRUPTER
125E
(SM-5)
3000A. 480Y/277V., 3Ø,4W. BUS
100% NEUTRAL BUS
GROUND BUSZ=5.75%
12470V.-480/277V.,3Ø,4W.
2000/2666KVA.,
3000K
FEEDER F1
UNIT SUBSTATION-D
GROUND BUS
L.A.
9KV.
STA. TYPE
F1
SWITCHSWITCH
F1
STA. TYPE
9KV.
L.A.
(SM-5)
125E
INTERRUPTER
AIR
600A., 15KV.,
N.O.
C H L-
S P A R E
S P A R E
GF
GF
GF
AD
KWH
D
SEC. L.A. & SURGE
CAPACITOR
D
KWH
AD
V
VS
288/120V.
D1
SEC. L.A. & SURGE
CAPACITOR
LINK
REMOVABLE
U.S. GOVERNMENT PRINTING OFFICE - 1987-755-756
D
C
B
A
D
C
B
A
$$ - THINK VALUE ENGINEERING - $$
Descriptions
Architect-Engineer
Submitted by:
Drawing Code:
Date:
DACA 45 92-C-L075
Contract No.:
DACA 45 92 B 0048
Spec. No.:
Symbol Revisions
Date Approved
U.S. ARMY ENGINEER DISTRICT
CORPS OF ENGINEERS
OMAHA, NEBRASKA
Designed by:
Drawn by:
Checked by:
Reviewed by: Scale: Sheet reference number:
THE BENHAM GROUP
ARCHITECT-ENGINEER
OKLAHOMA CITY, OKLAHOMA
PETERSON AIR FORCE BASE COLORADO
CENTRALIZED INTEGRATION SUPPORT FACILITY
CATEGORY CODE 141-764
AF 610-31-01
AS SHOWN
ELECTRICAL
ONE-LINE DIAGRAM
5E01
CED
NJS
JHG
APRIL 1992
15Kv. PAD MTD. SW. GR.
MS F1 F2
FUT.
EXPANSION
15Kv. SW. GR.
DRY TYPE
UNIT
SUPPRESSION
TRANSIENT TRANSIENT
SUPPRESSION
UNIT
DRY TYPE
S P A R E
C H L-
C H L-
C H L-
BP
ATS
EM
H
MCC-1
L
EM
EG
EMT
2T5
2L5
2H4
A AAA
2H3
2L4
2T42T3
2L3
2H2
A A AA
2H1
2L1
2T1 2T2
2L2
AA
1H8
1L8
1T8
1T7
1L7
1H7
A AAA
1H1
1L1
1T1 1T2
1L2
1H2
A A
1H3
1L3
1T3
AAAA AA AA AAAA AA A A AA
1H4
1L4
1T4
AA
1T5
1L5
1H5
A A
1T6
1L6
1H6
A A
D ra w in g:
X
0.
O K C
EL
EC
5E
Sa ve d:
3/
4:
B y:
N
S D im Sc al e:
.0
MCC-2
AA AA
EG
HS HPA
TS
PEPE
PARKING
AREA
CONTACTOR CHPA, 3P200A 22K
BLDG. EXTERIOR
SECURITY LTG.
CONTACTOR CHS, 3P60A 15K
CABLES FURNISHED
WITH PUMPS
SEWAGE
LIFT PUMPS
DUPLEX PUMP CONTROL
PANEL FURNISHED WITH
PUMPS
B P
A
TS
125KW 480 VOLT 3Ø
EMERGENCY GENERATOR
3 POLE, 225 AMP MAIN OUTPUT CIRCUIT BREAKER
FURNISHED WITH GENERATOR
3 POLE, 260 AMP, 480 VOLT
BYPASS ISOLATION TRANSFER
SWITCH IN NEMA "4" ENCLOSURE.
15KVA 1Ø, 480-120/240 VOLT
WEATHERPROOF PACKAGED
POWER SUPPLY FOR
CIRCUIT BREAKER SIZES
SEE SHEET 8E01D
KWH
DRAWOUT
VT
277:120V (3)
McGRAW
150 kVA 3Ø 12.47kV-480Y/277V.
PAD MTD. TRANSFORMER
5.75%Z OIL-IMMERSED
9kV.
LA
3#4/0, 1#4GND.
ENCLOSURE MOUNTED ON TRANSFORMER ENCLOSURE
3 POLE, 225 AMP MAIN CIRCUIT BREAKER IN NEMA "4"
LOOP FEED
ARRANGEMENT
GROUND ROD
SANITARY SEWAGE LIFT STATION NO. 2
SANITARY SEWAGE LIFT STATION NO. 1
GROUND ROD
ARRANGEMENT
LOOP FEED
3 POLE, 225 AMP MAIN CIRCUIT BREAKER IN NEMA "4"
ENCLOSURE MOUNTED ON TRANSFORMER ENCLOSURE
1#4GND.
3#4/0, LA
9kV.
5.75%Z OIL-IMMERSED
PAD MTD. TRANSFORMER
12.47kV-480Y/277V.
150 kVA 3Ø
(3) 277:120V
VT
DRAWOUT
KWH
D SEE SHEET 8E01
CIRCUIT BREAKER SIZES
POWER SUPPLY FOR
WEATHERPROOF PACKAGED
15KVA 1Ø, 480-120/240 VOLT
SWITCH IN NEMA "4" ENCLOSURE.
BYPASS ISOLATION TRANSFER
3 POLE, 260 AMP, 480 VOLT
FURNISHED WITH GENERATOR
3 POLE, 225 AMP MAIN OUTPUT CIRCUIT BREAKER
EMERGENCY GENERATOR
125KW 480 VOLT 3Ø
A
TS B
P
PUMPS
PANEL FURNISHED WITH
DUPLEX PUMP CONTROL
LIFT PUMPS
SEWAGE
WITH PUMPS
CABLES FURNISHED
EG
D
KWH
DRAWOUT
VT
120:120V (3)
150 kVA 3Ø 12.47kV-208Y/120V.
PAD MTD. TRANSFORMER
5.75%Z OIL-IMMERSED
9kV.
LA
LOOP FEED
ARRANGEMENT
GROUND ROD
ECB
L
SGR
9 1
SIGN &
GAS
REGULATOR
ENTRY CONTROL BUILDING
400/5
200/5
200/5
600A. 150E
3-1/C#1, 15kV COPPER SHIELDED EPR OR XLP WITH
133% INSULATION. NEUTRAL CONDUCTOR SHALL BE
600 VOLT #1 TYPE THW INSTALLED IN 1-4" CONCRETE
ENCASED DUCT WITH 1-4" DUCT AS SPARE.
12,5kV PRIMARY METERING
STATION BY COLORADO
SPRINGS DEPT. OF
UTILITIES
1000Kcmil UNDERGROUND
CABLE BY COLORADO
SPRINGS DEPT. OF
UTILITIES.
CO. TO MAKE PROPER TERMINATION.
SLACK ENDS OF CABLES FOR UTILITY
CONTRACTOR TO PROVIDE SUFFICIENT
3-1/C 1000Kcmil, 15kV COPPER SHIELDED EPR OR
XLP WITH 133% INSULATION. NEUTRAL CONDUCTOR
SHALL BE 600 VOLT 1000Kcmil TYPE THW
INSTALLED IN 1-6" CONCRETE ENCASED DUCT WITH
1-6" DUCT AS SPARE.
SPARE
1-4" DUCT AS SPARE.
INSTALLED IN 1-4" CONCRETE ENCASED DUCT WITH
SHALL BE 600 VOLT 250Kcmil TYPE THW
XLP WITH 133% INSULATION. NEUTRAL CONDUCTOR
3-1/C 250Kcmil, 15kV COPPER SHIELDED EPR OR
LIGHTING
16 16 3 3 1919193
18 18 18 18 18 18
17 17 17 17 17 17
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
KVA
*1
112.5
KVA
*1
112.5
KVA
*1
KVA
*1
KVA
*1
*1
KVA
AP 4
3P225A APCB
ANTENNA
POWER
500KW
3P800A 35K
11 11
10 10
3 3 3 15 19 19
800 800
800 800
NOTES:
*1. TRANSIENT SUPPRESSION UNIT. CONNECTED TO SECONDARY LUGS OF
DRY TRANSFORMER.
FEEDER SCHEDULE
NUMDER WIRE AND CONDUIT SIZE
3-#1/0, 1-#4/0 NEUT. 1-#6 GND. 2"C.
3-#4 & 1-#8 GND., 1 ˜ "C.
3-3š "C. Ea�4-350Kcmil & 1#1/0 GND.
3-#1/0 & 1-#6 GND., 1 š "C.
3-#4/0, 1-500Kcmil NEUT., 1-#4 GND. 3"C.
3-#4/0, 1-#4 GND., 3"C.
2-#3, 1-#3 GND., 1 ˜ "C.
6-#3, 1-#3 GND., 2"C.
2-4" CONCRETE ENCASED DUCTS Ea.�4-250Kcmil & 1-#2 GND.
4-#4/0, 1-#4 GND., 3"C.
3-#12, 1-#12 GND., œ"C.
3-#6, 1-#10 GND., 1 ˜ "C.
4-#1, 1-#8 GND., 1 š "C.
4-#4, 1-#10 GND. 2"C.
4-500Kcmil, 1-#3 GND., 3š "C.
2-3"C. Ea. �3-350Kcmil & 1-#1 GND.
2-2š "C Ea. �3-#3/0, 1-300Kcmil NEUT. & 1-#3 GND.
3-#2/0, 1-#6 GND. 2"C.
4-500Kcmil & 1-#3 GND., 3š "C.
3-250Kcmil, 1-500Kcmil NEUT. & 1-#4 GND., 3"C.
METAL ENCLOSED
600 VOLT 250Kcmil TYPE THW INSTALLED IN 4" CONDUIT.
133% INSULATION. NEUTRAL CONDUCTOR SHALL BE
3-1/C 250Kcmil, 15kV COPPER SHIELDED EPR OR XLP WITH
MAIN OUTPUT
CIRCUIT BREAKER
FURNISHED WITH
GENERATOR
(3)
(3)
(3)
600A.
250E. 150E.
3 POLE, 800 AMP
L S
L S
SEE PLAN
ON SH. 1E05
3P30A. FOR 3 PHASE
480V. SERVICE. HEAVY
DUTY FUSIBLE SINGLE
THROW SAFETY SWITCH
WITH FUSES AS REQ'D
FOR MOTOR HP FUR-
NISHED IN NEMA-3R
ENCLOSURE WITH EN-
CLOSURE & OPERATING
HANDLE PADLOCKED,
KEYED ALIKE.
ELEC. SERVICE
TO FIRE
SECURITY GATE
65K RMS SYM A.I.C. 65K RMS SYM A.I.C.
NF
1L9
TO FIRE ALARM CONTROL
PANEL. (SMOKE DAMPERS
TO CLOSE ON FIRE ALARM)
CONTACTOR SD 3P20A
ROUTE EML-35, 37, 39
CCT'S. THROUGH THIS
CONTACTOR
TYPE NX
OR EQUAL
12A.
12A.
McGRAW
TYPE NX
OR EQUAL
12A.
McGRAW
TYPE NX
OR EQUAL
"AS BUILT"
"AS BUILT"
--- REVISED TO SHOW "AS BUILT" CONDITIONS 4-1-94 BCK\RGL
Model
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