Old Plant One Line Diagram.pdf
PDF 615 KB Posted
- Attached to
- Architectural and Engineering Services for UNH Combined Heat & Power Plant Equipment Replacement
- Solicitation number
- 212027986
- Issued by
- New Hampshire
About this file
This is a One-Line Diagram for the University of New Hampshire's Combined Heat & Power Plant Equipment Replacement project, prepared at 60% design progress for review. The diagram illustrates the electrical integration of three 276kW induction generator units (MST275) operating at 480V, 3-phase, 60Hz, each connected through their respective control and breaker panels to a master intertie panelboard rated at 1200A and 65KAIC. The system includes a 1000 KVA transformer stepping down from 4160GY/2400V to 480Y/277V, a utility meter connection via Eversource, and a 155KW/194KVA Caterpillar standby diesel generator. The electrical distribution incorporates multiple switchboards and panelboards supplying various facility loads including condenser control systems, forced draft fans, boiler feed pumps, and building air conditioning units. Key infrastructure components include new and existing conduit runs (3" and 4" RMC), copper conductors ranging from #2 AWG to #750 KCMIL, and comprehensive grounding systems utilizing bare copper conductors, grounding rods, and building steel connections.
The design specifies extensive modifications to existing electrical infrastructure, including replacement of existing fuses with 1200A current limiting fuses, testing and potential replacement of existing phase conductors, installation of parallel conductor runs with bonding jumpers between transformer secondary lugs and the disconnect switch, and addition of a new 4" RMC conduit in parallel with existing conduits. New construction scope includes a generator service feeder, replacement of existing current transformers, a new generator interconnection panelboard rated at 800A across multiple sections, and a condenser control VFD panel with variable frequency drives serving three separate condenser units. All equipment identifiers and specifications are noted as requiring field verification by the electrical contractor prior to construction, with the document originating from existing customer documentation, utility information, and site investigation data. The project is located at the University of New Hampshire, Durham, NH, and is designated as drawing E003 with a project number T10953.
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Text version
52G1 500A
35KAIC
500:5
500:5
PM
4:1
T/C
T/C
42G1 500A
UNIT 1
276kW, 0.9PF
480V, 3PH, 60HZ
385FLA, 3565RPM
SEL-700G
UNIT CONTROL &
BREAKER PANEL
(52G1/UCP1)
PNLB1-52G1
(2) 3" EMT
(6) #250 AWG CU
(2) #2 AWG CU
CB1
600AF
500AT
LSI
DIRECTION OF
POWER FLOW
MST INTERTIE PANELBOARD - "PNLB-MST"
480Y/277VAC, 3PH, 4W, 60HZ
1200A, 65KAIC
NEMA 3R, UL67
52G2 500A
35KAIC
500:5
500:5
PM
4:1
T/C
T/C
42G2 500A
UNIT 2
276kW, 0.9PF
480V, 3PH, 60HZ
385FLA, 3565RPM
SEL-700G
UNIT CONTROL &
BREAKER PANEL
(52G2/UCP2)
PNLB2-52G2
(2) 3" EMT
(6) #250 AWG CU
(2) #2 AWG CU
CB2
600AF
500AT
LSI
52G3 500A
35KAIC
500:5
500:5
PM
4:1
T/C
T/C
42G3 500A
UNIT 3
276kW, 0.9PF
480V, 3PH, 60HZ
385FLA, 3565RPM
SEL-700G
UNIT CONTROL &
BREAKER PANEL
(52G3/UCP3)
PNLB3-52G3
(2) 3" EMT
(6) #250 AWG CU
(2) #2 AWG CU
CB3
600AF
500AT
LSI
HEATPLANT XFMR - "T-HP"
4160GY/2400:480Y/277V
65°C, 3PH, 60HZ
1000 KVA
5.7% Z, KNAN
**TO BE FIELD VERIFIED
15KV, MV-90
SECTION 1
800A
DS_MST-PNLB_MST
(**3) 4" RMC
**(QTY 2) EXISTING
(9) #600 KCMIL XHHW CU
(3) #2/0 AWG XHHW CU SSBJ
FERRAZ SHAWMUT
AMPTRAP #A4BY1200
1200A, 600VAC, 200KAIC
CLASS L
BPST DISCONNECT SW - "DS-ST"
SQD #H368NR
1200A RATED, 600VAC, 200KAIC
3PH, 3W, 60HZ
GROUND KIT INCLUDED
NEMA 3R
PRCLF
15KV, 165A
PM
(2) PT
480:120
(2) CT
1200:5
TO UNH SUB 1 VISTA
SWITCH VIA E.
ELECTRICAL YARD
SECTOR CAB
T_HP-DS_ST
(3) 4" RMC
(9) #750 KCMIL CU RHW
(3) #2/0 AWG CU SSBJ
(2) 4" RMC
(6) #600 KCMIL CU THHN
UTILITY METER
CLOSE COUPLED
EVERSOURCE
#78585046
TS-01
TRANSFER SWITCH
480VAC, 3PH, 3W, 60HZ
400A
GEN-01
STANDBY DIESEL GENSET
CATERPILLAR #SR-4
480/240VAC, 3PH, 60HZ
1800 RPM, 155KW/194KVA, 0.8PF
GG
GE #THPR3608G3T
MAIN DISC. SW.
600V, 3PH, 3W, 60HZ
800A, 200KAIC
60A
225A
60A
200A
400A 400A
100A
30A
30A
30A
60A 60A
SECTION 2
800A
SECTION 3
800A
CIRCUITS
CIRC PUMP #5
WELD PLUG
SCULP LAB
WOOD SHOP
TS SW (NRML PWR)
CIRC PUMP #1
CIRCUITS
HACKSAW
#2 BOILER FD PMP
FRCD DRAFT FAN #3
#2 LATHES MILL
TRK UNLD OIL PMP #1
PANEL P-DP-X
QUINCY #1
PB1 BLDG AC
PB2 BLDG AC
100A 60A
100A 100A
HEAT PLANT SWBD
GE AV-LINE
480VAC
3PH, 3W, 60HZ 800A
200KAIC
SECTION 4
400A
200A
40A
200A
60A
100A 100A
CIRCUITS
75KVA LV-TX
PANEL PP
QUINCY #2
FRCD DRAFT FAN #1
FRCD DRAFT FAN #2
EM FEED PUMP
NORMAL PWR
FROM SECTION 2
CRKT #7
N E
CB0
1200AF
1200AT
LSIG
CB4
250AF
250AT
LSI
20' MIN
UFFER
#6 AWG BARE CU
COLD WATER PIPE
10' MIN IN CONTACT W/EARTH
GROUNDING RODS
DRIVEN 8' MIN
BUILDING STEEL
10' MIN IN CONTACT W/EARTH
#3/0 AWG BARE CU
GAS LINE
GROUND BUS
#3/0 AWG BARE CU
#3/0 AWG BARE CU
#4AWG BARE CU
PNLB4-CDP1
(1) 3" EMT
(3) #250 AWG CU
(1) #2 AWG CU
VFD1 VFD2 VFD3
CONDENSER 1
CONTROL PANEL
BY THERMOFIN
QTY 8 - 3HP, 480VAC
CONDENSER 2
CONTROL PANEL
BY THERMOFIN
QTY 8 - 3HP, 480VAC
CONDENSER 3
CONTROL PANEL
BY THERMOFIN
QTY 8 - 3HP, 480VAC
VFD1-CCP1
(1) 2" EMT
(1) 4C #6 AWG
VFD CABLE
VFD2-CCP2
(1) 2" EMT
(1) 4C #6 AWG
VFD CABLE
VFD3-CCP3
(1) 2" EMT
(1) 4C #6 AWG
VFD CABLE
AIR COOLED CONDENSER
VFD PANEL - "CDP-01"
APPROXIMATE
GEO LOCATION:
43°8'12.05"N 70°56'10.09"W
APPROVED BY:
CHECKED BY:
CAD FILE:
DRAWN BY:
PROJECT NUMBER:
DESIGNED BY:
THIS DOCUMENT, AND THE ASSOCIATED DESIGNS, IS AN
INSTRUMENT OF SERVICES FOR THIS PROJECT AND SHALL
NOT BE USED FOR ANY OTHER PURPOSE WITHOUT
WRITTEN AUTHORIZATION FROM NLINE ENERGY, INC.
IF NOT ONE INCH ON THIS SHEET, ADJUST
SCALES ACCORDINGLY
BAR IS ONE INCH ON ORIGINAL DRAWING
DRAWING NO.SHEET SIZE
D
REVISIONS
DRAWING STATUS
STAMP
VERIFY SCALES
PROJECT
SHEET TITLE
PROJECT DATE:
PROJECT OWNER:
DESCRIPTIONNO. DATE BY
0 1"
PROJECT NAME:
ONELINE DIAGRAM - PROJECT
INTEGRATION
60% DESIGN - PROGRESS REVIEWKH05.28.25A
T10953 E002 - ONELINE - INTERCONNECTIONL.dwg
02/27/25
KMH
KMH
E003
FOR REVIEW
T10953 - UNH
(QTY 3) MST275 INDUCTION
UNIV. OF NEW HAMPSHIRE
22 COLOVOS RD
DURHAM, NH 03824-3515
Scale: NTS
ONELINE DIAGRAM - PROJECT INTEGRATION 1
KEYED NOTES:
1. TRANSPARENT OBJECTS AND THOSE DENOTED "(E)" ARE EXISTING.
2. THIS DIAGRAM IS CREATED FROM EXISTING DOCUMENTATION PROVIDED BY THE
CUSTOMER, THE UTILITY AND SITE INVESTIGATION DATA. EQUIPMENT IDENTIFIERS
AND DETAILED SPECIFICATIONS FOR EXISTING EQUIPMENT MAY NOT BE FULLY
ACCURATE COLLOQUIAL IDENTIFIERS FOR THE PURPOSES OF THIS PROJECT.
3. DETAILED SPECIFICATIONS FOR EQUIPMENT IMPACTED OR APART OF NEW
CONSTRUCTION SCOPE ARE TO BE FIELD VERIFIED BY THE ELECTRICAL CONTRACTOR
(EC) PRIOR TO CONSTRUCTION EFFORTS.
GENERAL NOTES:
EXISTING FUSED DISCONNECT SWITCH TO REMAIN. EXISTING FUSE TO BE
REPLACED WITH 1200A CURRENT LIMITING FUSE.
EXISTING PHASE CONDUCTORS (2 PER PHASE, #750KCMIL) TO BE TESTED (INSULATION
RESISTANCE) AND MAINTAINED IF PASSING. ADDITION PARALLEL RUN (1 PER PHASE,
#750KCMIL) AND SUPPLY SIDE BONDING JUMPERS (QTY 3, #2/0 AWG) TO BE PROVIDED
AND INSTALLED BETWEEN T-HP SECONDARY LUGS AND DS-ST.
NEW GENERATOR SERVICE FEEDER, "DS_MST-PNLB_MST":
1. TWO (2) EXISTING 4" RMC TO BE RE-USED.
2. EXISTING DECOMMISSIONED CONDUCTORS TO BE REMOVED.
3. PROVIDE AND INSTALL ONE (1) NEW 4" RMC INSTALLED IN
PARALLEL WITH EXISTING CONDUITS.
4. PROVIDE AND INSTALL ALL NEW PHASE CONDUCTORS AS
SPECIFIED.
4 EXISTING CT'S TO BE REPLACED.
5 NEW GENERATOR INTERCONNECTION PANELBOARD.
E004
E005
E006
6 NEW CONDENSER CONTROL VFD PANEL.
E007
AutoCAD SHX Text
FROM: 11G 86G PLC
AutoCAD SHX Text
FROM: 86G PLC
AutoCAD SHX Text
FROM: 11G 86G PLC
AutoCAD SHX Text
FROM: 86G PLC
AutoCAD SHX Text
FROM: 11G 86G PLC
AutoCAD SHX Text
FROM: 86G PLC
AutoCAD SHX Text
FROM: CONDENSER CONTROL RELAY
AutoCAD SHX Text
CB1 60A
AutoCAD SHX Text
FROM: CONDENSER CONTROL RELAY
AutoCAD SHX Text
CB2 60A
AutoCAD SHX Text
FROM: CONDENSER CONTROL RELAY
AutoCAD SHX Text
CB2 60A
AutoCAD SHX Text
PDB - 600V, 250A
AutoCAD SHX Text WAYLON BOWERS No. 17710
Mark Schow Cloud
Mark Schow Callout POTENTIAL SCOPE OF REPLACEMENT FOR ELECTRICAL TRANSFORMERS, GENERATORS, AND SWITCHBOARD
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