C O M M O N

W E

AL

TH OF

V I

R G I N I A

P

RR

O F

E S S

I ON A L E N

G I

N E E

OVERALL LOCATION

ENGINEER

5228 VALLEYPOINTE PKWY, SUITE 4

ROANOKE, VIRGINIA 24019

(540) 265-4444

STRATUS®

LOCATION MAP

PROJECT SITE

R

RANDALL O. SPENCER

Lic No.029321

Stratus Project No.2025-0087

05/11/2026

FRANKLIN COUNTY PUBLIC SCHOOLS

225 MIDDLE SCHOOL RD

ROCKY MOUNT, VA 24151

BENJAMIN FRANKLIN MS WEST

GENERATOR PROJECT CODE

06022026-1400

ELECTRICAL SHEET INDEX

Sheet Number Sheet Name

T-1 TITLE SHEET

E0.1 ELECTRICAL DETAILS, LEGEND, AND SCHEDULES

E1.1 ELECTRICAL PARTIAL FLOOR PLAN

E2.1 ELECTRICAL PARTIAL POWER RISER

T-1

GENERAL NOTE:

DUE TO DIGGING NEAR UNDERGROUND UTILITIES CONTACT MISS UTILITY AT 811, 1-800-552-7001, OR HTTP://WWW.MISSUTILITYOFVIRGINIA.COM NO LESS THAN 72 HOURS PRIOR TO EXCAVATION

AND DO NOT DISTURB THE SOIL UNTIL DIG TICKET HAS BEEN PROCESSED.

CONTRACTOR SHALL ACQUIRE THE SERVICES OF A PRIVATE UTILITY LOCATION COMPANY TO

LOCATE ALL EXISTING UTILITIES IN THE AREA OF WORK.

PRIMARY CONTACTS:

OWNER - FRANKLIN COUNTY PUBLIC SCHOOLS

PROJECT MANAGER - JOSH TURNER

EMERGENCY MANAGEMENT COORDINATOR FRANKLIN COUNTY FIRE-EMS

1255 FRANKLIN STREET, SUITE 111,

ROCKY MOUNT, VA 24151

PHONE – 540-483-6624

EMAIL - josh.turner@franklincountyva.gov

PROJECT ELECTRICAL DESIGNER - RANDALL SPENCER, ELECTRICAL DESIGN ENGINEER

STRATUS

5228 Valleypointe Pkwy #4

ROANOKE, VA 24019

OFFICE -540-529-5014

EMAIL - randy.spencer@stratusteam.com

CODE REFERENCES:

1. VIRGINIA CONSTRUCTION CODE (VCC) 2021

2. VIRGINIA UNIFORM STATEWIDE BUILDING CODE (VUSBC) 2021

3. NFPA 70, NEC 2020

4. SEE SPECIFICATIONS FOR ADDITIONAL CODES.

STEEL AND CONCRETE BOLLARD DETAIL

0'-6"

MIN

'-6

M

IN

4-#8 w/#3 TIES

@ 12" O.C. MIN

PAVEMENT

BOLLARD - (STEEL TUBE .25" THICK, 6" DIA.)

'-0

CONCRETE FOOTER BASE SHALL

BE SET ON COMPACTED

SUBGRADE. BASE FOOTING

SHALL BE NO LESS THAN

24" ROUND MIN.

NO SCALE

2'-0"

MIN

CONCRETE FOOTER 24" IN DIA.,

36" TALL.

6" TALL CONCETE DOMED TOP

'-6

EMERGENCY GENERATOR PAD DETAIL

EMERGENCY GENERATOR

12"

MIN. EACH

SIDE

1'-6"

TYPICAL

CHAMFER

2"FINISHED GRADE

M

IN

12"

#4 REBAR EACH WAY @ 12"

ON CENTER TOP & BOTTOM

CLASS A-3 CONCRETE SLAB

COMPACTED GRANULAR

FILL VDOT TYPE 1 NO. 21

OR 21A AGGREGATE BASE

COMPACTED SUBGRADE

NO SCALE

GROUND ROD

(MIN 10'-0" BELOW GRADE)

BUILDING GROUNDING ELECTRODE SYSTEM (BGES)

#3/0 IN 3/4" CONDUIT UNLESS INDICATED

OTHERWISE

NOTES:

1. ALL CONNECTIONS IN THE GROUNDING ELECTRODE SYSTEM

SHALL BE EXOTHERMICALLY WELDED (CADWELD, NO

SUBSTITUTE).

2. BOND ALL GROUNDING ELECTRODE METALLIC RACEWAYS

PER NEC 250.64(B).

3. NEC 250.50 ALLOWS THE UNSPLICED GROUNDING

ELECTRODE CONDUCTOR TO BE RUN TO ANY OF THE ABOVE

CONVENIENT GROUNDING ELECTRODES IN THE GROUNDING

ELECTRODE SYSTEM. THEREFORE, ALL THE ABOVE

GROUNDING ELECTRODE CONDUCTORS SHALL BE SIZED PER

NEC 250.66 (TABLE) TO PERMIT THIS APPLICATION, UNLESS

INDICATED OTHERWISE ON POWER RISER DIAGRAM.

SCHEMATIC

GROUNDING RODS: THREE (3) OR FOUR (4) AS REQUIRED PER

SECTION 26 05 26

NEC 250.52(A)(5)

TYPICAL BUILDING GROUNDING

ELECTRODE PER SPECIFIED

SYSTEMS, ETC.

TO THE MAIN SERVICE ENTRANCE

EQUIPMENT (I.E. MAIN PANEL)

SIZE PER NEC 250.66(TABLE) UNLESS

INDICATED OTHERWISE ON POWER RISER

DIAGRAM.

COLD WATER AND SPRINKLER MAINS

BUILDING METAL FRAME NOT

INTENTIONALLY OR INHERENTLY

GROUNDED

NEC 250.104(C)NEC 250.104(B)

"OTHER" METAL PIPING & DUCT

WORK BONDED TO BGES AS

INDICATED

NEC 250.66

NEC 250.52(A)(1)

NEC 250.104(A)

INTERIOR METAL WATER

PIPING BONDED TO BGES

NEC 250.52(A)(2)

BUILDING METAL FRAME

WHERE EFFECTIVELY

GROUNDED

NEC 250.52(A)(3)

BUILDING CONCRETE

ENCASED REINFORCEMENT

STEEL SEE NOTE 3

'-0

" M

IN

10'-0" MIN

10'-0" M

IN

GENERATOR

GROUND ROD

AND ADD WIRING

TO EXISTING BGES

#250

DUCT BANK SECTION

4"

4" -1

/2

7-1/2"

4" PVC

TYPICAL OF 8

NO SCALE

NOTES:

1. MINIMUM COVER ABOVE DUCTBANK OF

COMPACTED BACKFILL SHALL BE 34" FOR

GENERATOR CIRCUITS UNLESS OTHERWISE

INDICATED ON CIVIL PROFILES.

2. PROVIDE #10 CRUSHED STONE, COMPACTED

FOR BEDDING UNDER DUCTBANK.

3. PROVIDE MARKER TAPE CENTERED ABOVE

DUCTBANK. MARKER TAPE SHALL RUN THE

LENGTH OF THE DUCTBANK.

4. PROVIDE ONE (1) #4 REBAR AT EACH CORNER

AND ONE (1) #3 TIES IN TWO PIECES AT 24" ON

CENTER ALONG DUCTBANK.

ELECTRICAL SYMBOLS

DESCRIPTIONSYMBOL

SYSTEM AFF TOP OF

OUTLET

UNLESS

NOTED

E L E

C T

R

IC

A L E

L E

M E

N T

S

EXISTING VARIABLE FREQUENCY DRIVE

EXISTING ELECTRICAL PANEL, SURFACE MOUNT.PNL

EXISTING ELECTRICAL PANEL, FLUSH MOUNT.

EXISTING UNDERGROUND ELECTRICAL PRIMARY

PNL

VFD

EUEP

UGP

EUES

EXISTING DISCONNECT SWITCH

UNDERGROUND GENERATOR POWER

EXISTING UNDERGROUND ELECTRICAL SECONDARY

GROUNDING ELECTRODE

EXISTING DUPLEX RECEPTACLE, WALL

EQUIPMENT BOX AS NOTED ON PLANS

EGS EMERGENCY GENERATOR SHUTDOWN4'-0"

EGS EMERGENCY GENERATOR SHUTDOWN WITH WEATHERPROOF COVER.

WL4'-0"

UE UNDERGROUND ELECTRICAL AUXILIARY GENERATOR POWER

UC UNDERGROUND COMMUNICATIONS FOR GENERATOR

C O M M O N

W E

AL

TH OF

V I

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RR

O F

E S S

I ON A L E N

G I

N E E

A

ALL RIGHTS RESERVED. THESE DRAWINGS AND SPECIFICATIONS ARE

INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF

STRATUS®. WHETHER THE PROJECT FOR WHICH THEY WERE PREPARED IS

EXECUTED OR NOT. THEY ARE NOT TO BE USED IN ANY MANNER ON OTHER

PROJECTS OR EXTENSIONS TO THIS PROJECT EXCEPT BY THE AGREEMENT

IN WRITING AND WITH THE APPROPRIATE COMPENSATION TO STRATUS®.

REPRODUCTIONS OF SPECIFICATIONS WITHOUT THE WRITTEN CONSENT

OF STRATUS® IS PROHIBITED.

COPYRIGHT 2025 STRATUS

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Lic No.029321

5/ 8/

1:

:1

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M A ut od es k

D oc s:

//2

6-

B en ja m in F ra nk lin M

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05/11/2026

B E

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SUBMISSION

2025-0087

M

ID

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IN

C

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O S

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P K

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PNL-G

BOILER ROOM

BOYS

MECHANICAL

ROOM

GIRLS

JAN

EWH-2

CP-2W

VFD VFD VFD VFD

PNL-CDP

-MB

-DIST 2

480V-3ø-2500 AMPS

EXISTING SWITCHBOARD

EXISTING SWITCHBOARD

208-3ø-2000 AMPS

EXISTING

TRANS

480/208V- 3ø-500

KVA

E

PNL-WHM1

CP-1W

WHM1-29,31,33

EXISTING

MTS

AMPS

NORM

PWR

2500 A

GEN

PWR

2500 A

GEN

CABLE

AREA

EX - CT

CABINET

EXISTING

PWR. CO.

TRANS &

PAD

EXISTING CHILLER, FENCE AND GRAVEL AREA

NEW DIESEL GENERATOR

480V-3ø-1000 KW WITH

3000 GALLON DIESEL BELLY

TANK, FUEL POLISHER AND

CONCRETE PAD. SEE SPECS

FOR ADDITION INFORMATION.

PAD

TANK

GENERATOR

EUEP = EXISTING UNDERGROUND POWER COMPANY PRIMARY

EUES = EXISTING UNDERGROUND POWER COMPANY SECONDARY

UGP = UNDERGROUND GENERATOR POWER

UE = UNDERGROUND ELECTRIC

UC = UNDERGROUND COMMUNICATION FOR GENERATOR

EUEP

UGP

EU

ES

EXISTING ROADWAY

EXISTING WALKWAY

EXISTING GRASS AREA

EXISTING GRASS AREA

FENCE

STONE OR ROCK COVER

DDC

EXISTING PARKING EXISTING PARKING

E

E

E E

EE

E

E

E

EWH-1

EUH-1

E

EEEE

E E

E

E

GF-2

CWP-1W CWP-2W

EGS

EGS

WL

UC

UE

777 2

3 4 5 6 1

AIRFLOW

AND EXHAUST

TYPICAL FOR (14) BOLLARDS - SEE

DETAIL ON SHEET E0.1

C

OM

MO

NW

EA

LTH OF

V I RG

I N I A

P RR

O

F E S S I ON A L E N

G I

N E E

A

ALL RIGHTS RESERVED. THESE DRAWINGS AND SPECIFICATIONS ARE

INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF

STRATUS®. WHETHER THE PROJECT FOR WHICH THEY WERE PREPARED IS

EXECUTED OR NOT. THEY ARE NOT TO BE USED IN ANY MANNER ON OTHER

PROJECTS OR EXTENSIONS TO THIS PROJECT EXCEPT BY THE AGREEMENT

IN WRITING AND WITH THE APPROPRIATE COMPENSATION TO STRATUS®.

REPRODUCTIONS OF SPECIFICATIONS WITHOUT THE WRITTEN CONSENT

OF STRATUS® IS PROHIBITED.

COPYRIGHT 2025 STRATUS

R

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B

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RANDALL O. SPENCER

Lic No.029321

5/8 /20

:41 :31

P M

Au tod es k D oc s:/

/20

-0

7 B en jam in

Fr an kli n M

S Ge ne ra tor /20

-0

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05/11/2026

BE

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W

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TO

R

PR

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SUBMISSION

2025-0087

5 M

ID

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SC

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AN

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SCALE:E1.1 1/4" = 1'-0"

1 FIRST FLOOR - ELECTRICAL PARTIAL POWER PLAN - MAIN ELECTRICAL RM AND YARD

GENERAL NOTES THIS SHEET:

1. ALL UNDERGROUND UTILITIES SHALL BE MARKED BY AN INDEPENDENT

MARKING COMPANY. MS UTILITY WILL NOT MARK ALL UNDERGROUND

UTILITIES.

2. PROVIDE THREE RELAYS IN GENERATOR TO MONITOR

RUN/STOP/FAILURE AND CONNECT RELAY OUTPUTS TO FIRE ALARM

PANEL IN MAIN FRONT OFFICE.

3. PROVIDE GEN STATUS FROM THE GENERATOR TO THE EXISTING DDC

SYSTEM IN THE ROOM NEXT TO THE MAIN ELECTRICAL MECHANICAL

ROOM.

E

NOTES THIS SHEET:

EMERGENCY GENERATOR STOP SWITCH (EGS) FOR GENERATOR

SHUTDOWN. WL INDICATED TO HAVE WEATHERPROOF COVER.

PROVIDE A PANDUIT PANZONE WALL MOUNTED ENCLOSURE WITH

WOODARD DTSC 200A CONTROLLER, 1000 WATT UPS, WITH 24 VDC POWER

SUPPLY TO POWER THE CONVERSION COMPONENTS TO MAKE THE MANUAL

TRANSFER SWITCHGEAR (MTU) AN AUTOMATIC TRANSFER SWITCHGEAR

(ATS). PROVIDE A RECEPTACLE IN THE ENCLOSURE TO POWER THE UPS.

POWER RECEPTACLE FORM EXISTING PANELBOARD CPD IN SAME ROOM.

PROVIDE A 120V-1ø-20 AMP BREAKER OF MATCHING FRAME AND SIZE IN

NEXT SPACE ONLY POSITION IN EXISTING PANELBOARD. THE CONTROLLER

SHALL MONITOR TWO (2) NEW VOLTAGE TRANSFORMERS TO BE INSTALLED

IN THE MTU AT EACH BREAKER (GEN POWER AND NORMAL POWER) TO

SIGNAL LOSS/RETURN OF NORMAL POWER AND GEN POWER

AVAILABLE/NOT AVAILABLE FOR POWER SEQUENCING OF THE TWO (2)

BREAKERS TO AUTOMATICALLY SWITCH FROM NORMAL POWER TO GEN

POWER AND BACK TO NORMAL POWER ON RESTORATION OF NORMAL

POWER. THE CONTROLLER SHALL MONITOR GENERATOR STATUS

(RUN/STOP/FAILURE) VIA RELAYS TO BE ADDED TO THE GENERATOR AND

REPORT SIGNALS TO THE FRONT OFFICE FIRE ALARM PANEL AND DDC

SYSTEM IN THE ROOM NEXT TO THE MAIN MECHANICAL/ELEC ROOM. 24VDC

POWER SUPPLY SHALL BE POWERED OFF OF THE USP AND PROVIDE

CONTROL AND SENSOR POWER TO THE DEVICES ADDED TO MTU TO

CONVERT IT TO AN ATS. THE CONTROLLER SHALL PROVIDE START AND

STOP SIGNALS TO THE GENERATOR. THE CONTROLLER SHALL RESPOND

TO TWO (2) NEW TEST SWITCHES TO BE ADDED IN THE MTU AT EACH

MOTORIZED BREAKER (GEN AND NORMAL POWER) FOR BREAKER

OPERATION TESTING.

PROVIDE TWO (2) TEST SWITCHES IN THE MTU.

PROVIDE TWO (2) VOLTAGE MONITORS (PT) IN THE MTU.

PROVIDE TWO (2) CONTROL POWER TRANSFORMER (CPT) IN THE MTU.

PROVIDE ONE (1) CONTROL POWER TRANSFORMER CONTACT (CPT/TO) IN

THE MTU.

THESE DRAWINGS ARE BASED ON HISTORICAL DRAWINGS OF THE

EXISTING BUILDING. CONTRACTOR SHALL VERIFY ALL CONDITIONS

PRIOR TO FABRICATION OF SYSTEM. MODIFICATIONS SHALL BE

MADE ONLY AFTER APPROVAL BY THE ENGINEER.

V

AL

LE

YP

OI

NT

E

PK

W Y, S

TE

RO

AN

OK

E, V

A

NOTES THIS SHEET:

REMOVE THE KIRK KEY INTERLOCK TO ALLOW THE SYSTEM TO

AUTOMATICALLY TRANSFER POWER SOURCE BASED ON LOSS OF NORMAL

POWER AND RETURN OF NORMAL POWER AND USE OF THE MANUAL TEST

SWITCHES. PROVIDE TWO TEST SWITCHES TO SIMULATE GENERATOR

TRANSFER CONDITIONS UNDER LOAD AND NOT UNDER LOAD. WIRE OPEN

AND CLOSE SIGNALS TO TEST SWITCH FOR CONTROLLER SIMULATION.

THE CABLE INPUT PANEL FOR A MOBILE GENERATOR SHALL STAY AND ADD

CABLING FROM THE CONTROL PANEL FOR A ROLL-UP GENERATOR START

CIRCUIT BE CONNECTED IF A ROLL-UP GENERATOR IS EVER NEEDED DUE

TO THE STATIONARY GENERATOR BEING OUT OF SERVICE.

PROVIDE A 1.5" CONDUIT FROM THE GENERATOR INTO THE CONTROL

CABINET IN THE MAIN MECHANICAL/ELEC ROOM FOR (STOP/START/STATUS),

GEN START, GEN STOP AND REMOTE GENERATOR MONITORING PANEL

CABLING.

PROVIDE A 208V-3ø-80 AMP BREAKER OF MATCHING FRAME IN EXISTING

PANEL CPD IN THE NEXT AVAILABLE SPACE ONLY 3 POLE POSITION. ONE (1)

1.25" CONDUIT FROM EXISTING PANEL CPD TO GENERATOR AND CONNECT

TO GENERATOR AUXILIARY POWER PANEL. CONNECT PANEL BUS TO

BREAKER WITH 4-#3 & 1-#8 EGC CONDUCTORS.

PROVIDE GROUND ROD AT GENERATOR PAD. GROUND / BOND GENERATOR

TO ROD. CONNECT ROD TO EXISTING BUILDING GROUNDING ELECTRODE

SYSTEM WITH #250 WIRE.

PROVIDE SILT TUBES, SOCKS AND RETAINAGE SCREENING FOR SEDIMENT

CONTROL AROUND ALL AREAS OF SOIL DISTURBANCE TO STOP THE

SPREAD FOR DIRT AND RUNOFF.

RESTORE GRADE AND SOIL TYPE TO DISTURBED AREAS.

SEED AND RESTORE GRASS TO ALL AREAS OF DISTURBED SURFACE.

BORE UNDER SIDEWALK FOR ALL CONDUITS.

GRAPHIC SCALE

8'4'02'4'

SCALE: 1/4" = 1'-0"

NOTES THIS SHEET:

CUT OUT PAD INSIDE CABINET TO ALLOW CONDUITS FROM THE

GENERATOR TO TURN UP IN COMPARTMENT TO ALLOW GEN CABLE TO

TERMINATE TO MTU GEN INPUT BUS TO LINE SIDE OF GEN BREAKER.

GENERATOR POWER CABLES 7(4-#500 & 1-#350 EGC IN 4" CONDUIT).

GENERATOR AUXILIARY POWER CIRCUIT 4-#3 & 1-#8 IN 1.25" CONDUIT.

EXISTING POWER COMPANY PRIMARY POWER CONDUCTORS TO

TRANSFORMER.

EXISTING SECONDARY POWER CONDUCTOR FROM TRANSFORMER.

AREA BETWEEN BUILDING AND CHILLER FOR EXISTING CHILLER PIPING.

RE

V:

DA

TE

NO

TE

#12 #10 #8 #6 #4 #4 #3 #2 #1

#1/0 #1/0 #3/0 #4/0 #250 #350 #500 #500 #4/0 #250 #350 #500 #350

#12 #10 #8 #6 #4 #4 #3 #2 #1

#1/0 #1/0 #3/0 #4/0 #250 #350 #500 #500 #4/0 #250 #350 #500 #350

#12 #10 #10 #10 #10 #8 #8 #8 #8 #6 #6 #6 #4 #4 #4 #3 #3 #2 #2 #1

#1/0 #1/0

3/4" 3/4" 3/4" 1"

1-1/4" 1-1/4" 1-1/4" 1-1/2" 1-1/2"

2" 2"

2-1/2" 2-1/2"

3" 3-1/2"

4" 4"

2-1/2" 3"

3-1/2" 4"

3-1/2"

DEVICE

RATING PHASE NEUT. EGC CONDUIT RUNS

BRANCH CIRCUIT

WIRE SIZE TABLE

NOTES:

1. WIRE SIZING IS BASED ON 2020 NEC TABLES 250.66

AND 310.15(B)(16).

2. DEVICE RATING REPRESENTS THE MAXIMUM SIZE

OVERCURRENT PROTECTION DEVICE FOR WHICH

THE ASSOCIATED WIRE MAY BE UTILIZED.

3. ALL FEEDER AND BRANCH CIRCUITS ON THIS

PROJECT SHALL CONTAIN NEUTRAL CONDUCTORS

UNLESS SPECIFICALLY STATED, BY THE

MANUFACTURER OF THE EQUIPMENT BEING SERVED,

THAT ONE IS NOT REQUIRED.

SCHEMATIC

PARTIAL POWER RISER DIAGRAM FOR ADDING GENERATOR

MECHANICAL/ELEC. RM. 021

EXISTING ELECTRIC METER

CABINET SURF. MOUNTED

DIST MB CT

EXISTING

480V-3ø-2500 AMP

SWITCHBOARD

GEN

CON BOX

SECTION

480V-3ø-

2500 AMP

EXISTING TRANSFER SWITCH 480V - 3ø - 2500 AMP

TO BE RETROFITTED TO BE AN ATS

GENERAL POWER NOTES THIS SHEET:

1. ALL CONDUIT AND WIRING UNLESS NOTED

OTHERWISE IS EXISTING TO REMAIN.

2. ALL EQUIPMENT UNLESS NOTED

OTHERWISE IS EXISTING TO REMAIN.

E3E

MANUAL

TRANSFER

SWITCH

SECTION

GEN

BREAKER

SECTION

CT

SECTION

GRADE

POWER RISER NOTE FOR NEW FEEDERS:

3-#12 AND 1-#12 EGC IN 3/4” CONDUIT

4-#3 AND 1-#8 EGC IN 1-1/4” CONDUIT)

7(4-#500 AND 1-#350 EGC IN 4” CONDUIT)

EXISTING POWER PRIMARY CABLING AND 4'

CONDUITS.

CONTROL / COMMUNICATION CONDUIT 1.5"

EXISTING CONDUIT AND WIRE.

E

E

POWER COMPANY

TRANSFORMER

12470/480V - 3ø - 2000 KVA

EXISTING

GRADE

NEW DIESEL GENERATOR

480V-3ø-1000.00 KW WITH

3000 GALLON BASE BELLY

TANK AND ONE (1) 1200 AMP

100% BREAKER WITH LSIG

MAIN

BREAKER

SECTION CHILLER

EXISTING

NEW GEN

CONDUIT

ENTRY

FOR BUXS

CONNECT

TO GEN

BREAKERX

480V-3ø-

2500 AMP

3000 GALLON BASE BELLY TANK

CONCRETE PAD

GEN AUX PANEL

EXISTING

CPD PANEL

CONTROL CABINET

FOR WOODARD

DTSC 200 A

CONTROLLER

E

NOTE THIS SHEET:

NEW GROUND ROD TIED TO BGES. SEE GROUNDING DETAILS.

EXISTING PANEL CDP. ADD ONE (1) 120V-1ø-20 AMP BREAKER AND ONE (1) 208V-3ø-80 AMP OF MATCHING FRAME AND SIZE.

PROVIDE A PANDUIT PANZONE WALL MOUNTED ENCLOSURE WITH WOODARD DTSC 200A CONTROLLER, 1000 WATT UPS, WITH 24 VDC POWER SUPPLY TO POWER THE CONVERSION COMPONENTS TO MAKE THE MANUAL TRANSFER SWITCHGEAR (MTU) AN AUTOMATIC TRANSFER SWITCHGEAR (ATS). PROVIDE A RECEPTACLE IN THE ENCLOSURE TO POWER THE UPS. POWER RECEPTACLE FORM EXISTING PANELBOARD CPD IN SAME ROOM. PROVIDE A 120V-1ø-20 AMP BREAKER OF MATCHING FRAME AND SIZE IN NEXT SPACE ONLY POSITION IN EXISTING PANELBOARD. THE CONTROLLER SHALL MONITOR TWO (2) NEW VOLTAGE TRANSFORMERS TO BE INSTALLED IN THE MTU AT EACH BREAKER (GEN POWER AND NORMAL POWER) TO SIGNAL LOSS/RETURN OF NORMAL POWER AND GEN POWER AVAILABLE/NOT AVAILABLE FOR POWER SEQUENCING OF THE TWO (2) BREAKERS TO AUTOMATICALLY SWITCH FROM NORMAL POWER TO GEN POWER AND BACK TO NORMAL POWER ON RESTORATION OF NORMAL POWER. THE CONTROLLER SHALL MONITOR GENERATOR STATUS (RUN/STOP/FAILURE) VIA RELAYS TO BE ADDED TO THE GENERATOR AND REPORT SIGNALS TO THE FRONT OFFICE FIRE ALARM PANEL AND DDC SYSTEM IN THE ROOM NEXT TO THE MAIN MECHANICAL/ELEC ROOM. 24VDC POWER SUPPLY SHALL BE POWERED OFF OF THE USP AND PROVIDE CONTROL AND SENSOR POWER TO THE DEVICES ADDED TO MTU TO CONVERT IT TO AN ATS. THE CONTROLLER SHALL PROVIDE START AND STOP SIGNALS TO THE GENERATOR. THE CONTROLLER SHALL RESPOND TO TWO

(2) NEW TEST SWITCHES TO BE ADDED IN THE MTU AT EACH MOTORIZED BREAKER (GEN AND NORMAL POWER) FOR BREAKER

OPERATION TESTING.

PROVIDE TWO (2) TEST SWITCHES IN THE MTU.

PROVIDE TWO (2) VOLTAGE MONITORS (PT) IN THE MTU.

PROVIDE TWO (2) CONTROL POWER TRANSFORMER (CPT) IN THE MTU.

PROVIDE ONE (1) CONTROL POWER TRANSFORMER CONTACT (CPT/TO) IN THE MTU.

REMOVE THE KIRK KEY INTERLOCK TO ALLOW THE SYSTEM TO AUTOMATICALLY TRANSFER POWER SOURCE BASED ON LOSS OF NORMAL POWER AND RETURN OF NORMAL POWER AND USE OF THE MANUAL TEST SWITCHES. PROVIDE TWO TEST SWITCHES TO SIMULATE GENERATOR TRANSFER CONDITIONS UNDER LOAD AND NOT UNDER LOAD. WIRE OPEN AND CLOSE

SIGNALS TO TEST SWITCH FOR CONTROLLER SIMULATION.

THE CABLE INPUT PANEL FOR A MOBILE GENERATOR SHALL STAY AND ADD CABLING FROM THE CONTROL PANEL FOR A ROLL- UP GENERATOR START CIRCUIT BE CONNECTED IF A ROLL-UP GENERATOR IS EVER NEEDED DUE TO THE STATIONARY

GENERATOR BEING OUT OF SERVICE.

4 5 6 7 8

ABB TEST SWITCH

ADDED

WOODWARD DTSC

200 A CONTROLLER

ADDED

1000 VA UPS FOR

STEADY STATE POWER

ADDED

24VDC POWER SUPPLY

FOR DEVICE

CONTROL POWER

ABB TEST SWITCH

ADDED

CPT - T/O CONTROL

CONTACTOR FOR CONTROLLING

BREAKER POSITIONING

PT TO MONITOR

VOLTAGE

ADDED

PT TO MONITOR

VOLTAGE

ADDED

1000 VA CPT

CONTROL POWER

TRANSFORMER

GENERATOR

LINE SIDE

UTILITY

LINE SIDE

1000 VA CPT

CONTROL POWER

TRANSFORMER

TO WOODWARD DTSC 200 A

CONTROLLER

1. RUN PARALLEL OPEN/CLOSE

COMMANDS VIA INTERPOSING

RELAYS & TEST SWITCHES.

2. BREAKER STATUS FROM

EXTRA CONTACTS.

GEN START/STOP SIGNAL

GEN STATUS SIGNALS

PARTIAL CONTROL DIAGRAM FOR ATS OPERATION CONVERSION MTU TO ATS

SCHEMATIC

C O M M O N

W E

AL

TH OF

V I

R G I N I A

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RR

O F

E S S

I ON A L E N

G I

N E E

A

ALL RIGHTS RESERVED. THESE DRAWINGS AND SPECIFICATIONS ARE

INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF

STRATUS®. WHETHER THE PROJECT FOR WHICH THEY WERE PREPARED IS

EXECUTED OR NOT. THEY ARE NOT TO BE USED IN ANY MANNER ON OTHER

PROJECTS OR EXTENSIONS TO THIS PROJECT EXCEPT BY THE AGREEMENT

IN WRITING AND WITH THE APPROPRIATE COMPENSATION TO STRATUS®.

REPRODUCTIONS OF SPECIFICATIONS WITHOUT THE WRITTEN CONSENT

OF STRATUS® IS PROHIBITED.

COPYRIGHT 2025 STRATUS

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