751.21267.JAG _Addendum No 1.pdf

1601 E. CÉSAR E. CHÁVEZ AVENUE, LANSING, MI 48906

PHONE: (517) 487-2511

FAX: (517) 487-2544

ADDENDUM NO. 1

Date: 06/23/22 Project Name: Wolf Lake Fish Hatchery – Electrical Distribution Upgrades File # 751.21267.JAG Unit Code # 4290

This Addendum is issued for the purpose of modifying and/or clarifying the original Contract Documents and shall take precedence over them.

All work included herein shall be in accordance with the original drawings and specifications except as specifically noted herein. All incidental items required to provide the following modifications shall be included even though not specifically described.

This addendum is being sent to all bidders receiving plans and specifications. Receipt of this Addendum shall be noted on the Bid Summary in the appropriate location.

Clarification and Questions:

A1.1 Attachments: Sign in sheets.

A1.2 Attachments: Reissued Mich Spec Schedule of Alternates.

A1.3 Attachments: Reissued electrical sheets E2.1 and E6.1.

A1.4 Attachments: Re-issued specification section 261329 - Medium-Voltage, Switchgear.

A1.5 Clarification: The base bid is to perform all the work shown on the drawings and in the specifications.

A1.6 Clarification: The alternates are “deduct” alternates and the priority of them is as follows (highest priority to lowest priority):

i. Provide and install new 5 section primary metering cabinet, new utility feed, relocate S2, and install new T7,

ii. Provide and install eight new medium-voltage step-down transformers and two new medium-voltage cables

iii. Re-feed well 2 with new conduit and wire.

ADDENDUM NO. 1

A1.7 Clarification: Minimum of 3’-0” cover over all new medium voltage cables.

A1.8 Clarification: All medium voltage cables need to be tested per contact documents. A report shall be provided with all test results.

A1.9 Question: Can you please clarify what type of switchgear is needed for this project?

These are drawn as air insulated with fusing, but the specification, 261329, calls for liquid filled vacuum fault interrupter with motor actuators and automatic source transfer.

Response: Refer to re-issued specification section 261329 - Medium-Voltage, Switchgear for clarification.

A1.10 Question: The Conduit and Wire Schedule on Drawing E-6.1 indicates we should provide

(3) #4/0 25KV cables with 133% insulation and concentric neutrals. The specification calls for three conductor cable with aluminum interlocked armor and cables with copper tape shield. Please confirm the type of cable we should provide. Response: Provide (3) #4/0 25KV aluminum cables with 133% insulation and concentric neutrals.

A1.11 Question: Please clarify what, if any, temporary power needs to be provided for outages during the project. Response: For outages over 8 hours temporary power will be required for the main hatchery, generator building, the lab, and the shop.

A1.12 Question: Would it be possible to provide clarification on the drawings for what is to be included in the base bid and what is to be included in each of the alternates? Response:

Base bid shall include all items shown on issued drawings. Alternates shall be provided as described in the Mich Spec – 6.2 Schedule of Alternates.

A1.13 Please clarify what is included in the Allowance Amount shown on the Bid Schedule.

Assuming that is for the new Consumers power feed, but does it include the Utility Metering Cabinet? Response: Allowance amount is for project contingency. Contractor shall account for new Consumers power feed and Utility Metering Cabinet in their base bid.

End of Addendum #1

MICHSPEC DTMB 00300 − 4 (R 03/22)

6.2 Schedule of Alternates - The Bidder will complete (or deduct from the Contract) the parts of the Work designated by the Alternates that follow and accept in full payment (or allow in full credit) for those parts of the Work the following Bid Prices:

Alternate Item No.

Bid Quantity

Description

Unit Price

Item Bid Price

1 1 Re-feed Well 2 with New Conduit and Wire.

2 1 Provide and install Eight new Medium-Voltage Step-Down

Transformers and Two New Medium-Voltage Cables.

The Bidder further acknowledges and agrees that the separate prices bid on this “Schedule of Alternates,” where they are applicable and deemed acceptable by the Owner, will be used if incorporated into the Contract when the Owner issues the Notice of Award.

Name of the Bidder _________________________________________ Agency No. ________Funding Code________ File No. _________

Date _________________________

SIGMA VENDOR NUMBER _________________________________

Telephone No. _______________________

XFMR T5A

& T5B

XFMR T1

XFMR T2

XFMR T3

XFMR CABINET

T8

XFMR T7

XFMR T4

XFMR T6

MV SWITCH-S3

(PSE-11)

(RELOCATED FORMER S2)

NEW

MV SWITCH - S4

(PSE-11)

WELL 2

NEW UTILITY

METERING CABINET

NEW

FIVE SECTION

MV SWITCH

MS-1

MV SWITCH - S5

(PMH-5)

MV SWITCH - S2

(PSE-9)

EXISTING MV CABLE TO REMAIN

1. EVERYTHING TO REMAIN UNLESS NOTED OTHERWISE.

2. CONTRACTOR SHALL RE-LABEL ALL EQUIPMENT PER THE

UPDATED RISER DIAGRAM. REFER TO SHEET E-6.1 FOR

UPDATED EQUIPMENT NAMES.

ELECTRICAL GENERAL NOTES

LEGEND

ELECTRICAL KEY NOTES

NEW MEDIUM VOLTAGE SWITCH.

NEW TRANSFORMER.

WELL 4

NEW MV CABLE

NEW UG UTILITY FEEDER BY

CONSUMERS, RACEWAYS BY EC.

SOLAR GENERATOR

BUILDING

EXISTING SPARE CONDUIT TO REMAIN

WELL HOUSE 7

EXISTING

SECONDARY CABLE

TO REMAIN

E-2.1

751/21267.JAG

file no.

checked by drawn by consultant issue date sheet no.

contract no.

unit number

Y22007 consultant job no.

21312.00 sheet title

M a t r ix

06-06-2022 BID SET

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ELECTRICAL SITE

PLAN – NEW

N ELECTRICAL SITE PLAN - NEW

SCALE: 1" = 100'

25080400 20 160

06-23-2022 ADDENDUM #1

CONDUIT & WIRE SCHEDULE

133% INSULATION WITH (3) #4/0 25KV CABLES 4" #3/0 MV-105105

TAG KCMIL

AWG °C TEMP.

SIZE

CONDUIT GND RATED TYPE REMARKS

A

CONTRACTOR SHALL PROVIDE AND INSTALL NEW ONE FOR ONE

TRANSFORMER. EXTEND CONDUIT & WIRE AS REQUIRED FOR INSTALLATION

OF NEW EQUIPMENT.

EXTEND CONDUIT & WIRE AS REQUIRED FOR INSTALLATION OF NEW

EQUIPMENT.

CONTRACTOR SHALL COORDINATE INSTALLATION OF NEW UTILITY FEED

WITH UTILITY COMPANY. CONSUMERS ENERGY CONTACT:

KARALEE.MCKINSTRYMASKER@CMSENERGY.COM OR 517.513.9936.

CONTRACTOR SHALL PROVIDE AND INSTALL NEW TRANSFORMER. PROVIDE

AND INSTALL NEW CONDUIT & WIRE AS REQUIRED FOR INSTALLATION OF

NEW EQUIPMENT.

CONTRACTOR SHALL COORDINATE SERVICE VOLTAGE AND PHASE WHEN

CONNECTING NEW TRANSFORMER TO EXISTING LOAD.

ELECTRICAL KEY NOTES

METER

CONSUMERS POWER FEED

24,920/14,400V

3 PHASE

NEW UTILITY CT METERING CABINET

10' GROUND

ROD (TYPICAL)

MV SWITCH MS-1

GROUND BUS

0A

/2P

0A /2P

SP

AR

E

75 KVA

WELLHOUSE #6

T6

75 KVA

SWITCH - S2

PME-9

GROUND BUS

ELECTRICAL RISER DIAGRAM - NEW

SCALE: N.T.S.

0A

/2P

0A /2P

0A

/2P

0A /2P

277/480V

225 KVA

120/240V

150 KVA

120/208V

75 KVA

75 KVA

A

A CONCENTRIC NEUTRALS.

SWITCH - S3

PSE-11

GROUND BUS

SWITCH - S5

PMH-9

GROUND BUS

SWITCH - S4

PSE-11

GROUND BUS

NEW

A

A

1 1

NEW

WELLHOUSE #7

T7

(RELOCATED

FORMER S2)

0A

/2P

225 KVA1

WELL 4 XFMR

T4

HATCHERY

GENERATOR

BUILDING

T3

EXISTING

HATCHERY COMPLEX

T5A &T5B

HATCHERY BUILDING

T1

VISITOR'S CENTER

T2

0A

/2P

A

NEW

2 2 2

E

E

E

E

0E

EXISTING

1. CONTRACTOR SHALL RE-LABEL ALL EQUIPMENT.

2. CONTRACTOR SHALL PERFORM A DEVICE COORDINATION STUDY TO

VERIFY ALL FUSE SIZES.

GENERAL ELECTRICAL NOTES

E

SP

AR

E

3E

7E

MUSKIE BUILDING

T8

WELL #2

T8

3 PHASE3 PHASE

B

120/240V

75 KVA

3 PHASE

EXISTING - - -- EXTEND AD REQUIRED.

A

B B

A

5 5

277/480V

3 PHASE

277/480V

3 PHASE

277/480V

3 PHASE

277/480V

3 PHASE

3 PHASE

5 5

ANTI-PARALLELING GEAR

E-6.1

751/21267.JAG

file no.

checked by drawn by consultant issue date sheet no.

contract no.

unit number

Y22007 consultant job no.

21312.00 sheet title

M a t r ix

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ELECTRICAL RISER

DIAGRAM – NEW

06-23-2022 ADDENDUM #1

State of Michigan Matrix Consulting Engineers, Inc.

Department of Technology, Management and Budget Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades File No: 171/21027.RWG Funding Code No.: 171MBFACMSPHQ

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 1

SECTION 261329 - MEDIUM-VOLTAGE, SWITCHGEAR

PART 1 - GENERAL

1.1 SUMMARY

A. The Contractor shall furnish and install the medium voltage load interrupter switchgear as specified herein and as shown on the contract drawings.

1.2 DEFINITIONS

A. BIL: Basic Impulse Insulation Level.

B. Bushing: An insulating structure including a central conductor, or providing a central passage for a conductor, with provision for mounting on a barrier, conducting or otherwise, for insulating the conductor from the barrier and conducting current from one side of the barrier to the other.

C. Bushing Elbow: An insulated device used to connect insulated conductors to separable insulated connectors on dead-front, pad-mounted switchgear and to provide a fully insulated connection.

Also called an "elbow connector."

D. Bushing Insert: That component of a separable insulated connector that is inserted into a bushing well to complete a dead-front, load break or non-load break, separable insulated connector (bushing).

E. Bushing Well: A component of a separable insulated connector, either permanently welded or clamped to an enclosure wall or barrier, having a cavity that receives a replaceable component (bushing insert) to complete the separable insulated connector (bushing).

F. Fault Interrupter: A self-controlled mechanical switching device capable of making, carrying, and automatically interrupting an alternating current. It includes an assembly of control elements to detect overcurrents and control the fault interrupter. A fault interrupter always consists of a switching device, a control unit, and sensors for current and/or voltage sensing.

G. Hotstick: An insulated stick, usually made of fiberglass, that is used to work energized overhead conductors and operate electrical equipment that is overhead, underground, and compartmentalized.

H. NETA ATS: Acceptance Testing Specification.

I. SCADA: Supervisory control and data acquisition.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 2

J. Way: A three-phase or single-phase circuit connection to the bus that may contain combinations of switches and protective devices or may be a solid bus.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include rated capacities, operating characteristics, and furnished specialties and accessories.

2. Time-current characteristic curves for overcurrent protective devices.

B. Shop Drawings: For switchgear.

1. Include plans and elevations showing major components and features.

a. Include a plan view and cross section of equipment base showing clearances, required work space, and locations of penetrations for grounding and conduits.

2. Include details of equipment in each way and indicate dimensions, weights, loads, required clearances, and location and size of each field connection.

3. Include single-line diagram.

4. Include list of materials.

5. Include nameplate data.

6. Include control power wiring diagrams.

7. Include battery, charger, and transfer switch ratings.

8. Include copy of nameplate.

9. Switchgear Ratings:

a. Voltage.

b. Continuous current.

c. Short-circuit rating.

d. BIL.

10. Design Calculations: Signed and sealed by a qualified professional engineer. Calculate requirements for selecting seismic restraints.

11. Wiring Diagrams: For each switchgear assembly, include the following:

a. Power, signal, and control wiring.

b. Schematic diagrams showing connections to remote devices including SCADA remote terminal unit.

1.4 INFORMATIONAL SUBMITTALS

A. Coordination Drawings:

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 3

1. Utilities site plan, drawn to scale, showing heavy equipment or truck access paths for maintenance and replacement.

B. Qualification Data: For testing agency.

C. Product Certificates: For pad-mounted switchgear.

1. Switch ratings as listed in IEEE C37.74.

2. Interrupter ratings as listed in IEEE C37.60.

3. Coating system compliance with the IEEE standard listed in "Enclosure" Article.

D. Source quality-control reports.

E. Field quality-control reports.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For switchgear and switchgear components to include in emergency, operation, and maintenance manuals.

1. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following:

a. Manufacturer's written instructions for testing and adjusting overcurrent protective devices.

b. Time-current curves, including selectable ranges for each type of overcurrent protective device.

c. Record as-left set points of adjustable devices.

1.6 QUALITY ASSURANCE

A. Testing Agency Qualifications: Member company of NETA.

1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. Comply with IEEE C2.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 4

C. Comply with IEEE C37.74.

D. Provide NEMA 3R rated equipment.

2.2 MANUFACTURERS

1. S&C Electric Co.

2. Siemens Energy & Automation, Inc.

3. Square D Co.

4. Westinghouse Electric Corp.; Electric Components Div.

5. Eaton.

2.3 PERFORMANCE REQUIREMENTS

A. Service Conditions:

1. Switchgear shall be suitable for operation under service conditions specified as usual service conditions in IEEE C37.20.3.

2.4 RATINGS

A. Switchgear assembly ratings shall be as follows

1. Nominal System Voltage: 24.92 kV, 3PH, 4W.

2. System Grounding: Solid

3. Main Cross Bus Continuous Current:200A

4. Maximum Design Voltage: 25 kV.

5. BIL: 110KV.

6. Main Cross Bus Momentary Current (10 Cycle): 63KA Asymmetrical RMS

7. Main Cross Bus 2-Second Short Circuit Current: 40KA Asymmetrical RMS

8. Breaker Frame Size: 200A

2.5 ENCLOSURE

A. Enclosure Integrity: Comply with IEEE C57.12.28 for compartmentalized enclosures that contain energized electrical equipment in excess of 600 V that may be exposed to the public.

B. Corrosion Protection: Fabricate the support frame, enclosure base, and the enclosure from stainless steel, ASTM A 167, Type 304 or 304L. Enclosure coating system shall be factory applied, meeting the requirements of IEEE C57.12.28 and IEEE C57.12.29, standard color gray.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 5

2.6 CONSTRUCTION

A. Dead-front, front, and rear access switchgear.

B. Construct switchgear assembly with switched ways that have front-accessible terminations for cables entering from below and with manual operating provisions with a lineman's hotstick.

C. Viewing Windows: For each switch, located adjacent to manual operating devices, and positioned to show switch contact position.

D. Grounding: Provision to make grounding cable and wire connections at each way.

2.7 MEDIUM-VOLTAGE METAL-ENCLOSED SWITCHGEAR SECTION

A. Metal-enclosed, air-interrupter switchgear, with fuses, complying with IEEE C37.20.3.

1. Switchgear shall be arc resistant, complying with IEEE C37.20.7, Type 1.

B. Ratings: Comply with IEEE C37.04; and suitable for application in three-phase, 60-Hz, solidly grounded-neutral system.

1. System Voltage: 14.4 kV nominal; 25 kV maximum.

2. Design Level of Available-Source Fault Current: Integrated short-circuit rating consistent with value of fault current indicated.

3. Main-Bus Rating: 200 A, continuous.

C. Interrupter Switches: Stationary, gang operated, and suitable for application at maximum short-circuit rating of integrated switchgear assembly.

1. Rating: 125-A continuous duty and load break.

2. Two-Time Duty-Cycle Fault Closing: 40,000 asymmetrical amperes.

3. Switch Action: No external arc and no significant quantities of ionized gas released into the enclosure.

4. Switch Construction: Supported entirely by interior framework of structure, with copper switchblades and stored-energy operating mechanism.

5. Phase Barriers: Full length of switchblades and fuses for each pole; designed for easy removal; allow visual inspection of switch components if barrier is in place.

6. Protective Shields: Cover live components and terminals.

a. Fuse Mounts: Single frame mounted and de-energized when switch is open.

7. Mechanical Interlock: Prevent opening of switch compartment door unless switchblades are open and prevent closing switch if door is open.

8. Window: Permits viewing switchblade positions when door is closed.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 6

9. Accessory Set: Tools and miscellaneous items required for interrupter switchgear test, inspection, maintenance, and operation. Include fuse-handling tool as recommended by switchgear manufacturer.

D. Fuses: Sizes recommended by secondary unit substation manufacturer, considering fan cooling, temperature-rise specification, and cycle loading.

1. Current-Limiting Fuses: Full-range, fast-replaceable, current-limiting type that will operate without explosive noise or expulsion of gas, vapor, or foreign matter from tube.

2. Expulsion Fuses: Furnished in disconnect-type mountings and renewable with replacement fuse units. Gases emitted on interruption are controlled and silenced by chambers designed for that purpose.

3. Indicator integral with each fuse to show when it has blown.

4. Spares: Include three fuses in use and three spare fuses in storage clips in each switch.

E. Surge Arresters: Comply with IEEE C62.11, Distribution Class; metal-oxide-varistor type, with ratings as indicated, connected in each phase of incoming circuit and ahead of any disconnecting device.

2.8 POWER SUPPLY

A. The power supply for instrumentation, communications, and switch operations shall be from a potential transformer installed as part of the switchgear.

2.9 BUSHINGS

A. Separable insulated connectors shall be used to connect primary cable.

1. Bushings: One-piece, 125 A, BIL ratings the same as the connectors. Comply with

IEEE 386.

2. Supply a standoff bracket or parking stand for each bushing, mounted horizontally adjacent to each bushing.

2.10 SURGE ARRESTERS

A. Distribution class; metal-oxide-varistor type, fully shielded, separable elbow type, suitable for plugging into the inserts. Comply with IEEE C62.11 and IEEE 386.

1. Nominal System Line-to-Line Voltage: 24.92 kV rms.

2. Maximum Continuous Operating Voltage: 24.92 kV rms.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 7

2.11 WARNING LABELS AND SIGNS

A. Comply with requirements in Section 260553 "Identification for Electrical Systems" for labels and signs.

1. High-Voltage Warning Label: Self-adhesive labels on the outside of the high-voltage compartment door(s). Legend shall be "DANGER HIGH VOLTAGE" printed in two lines of minimum 2-inch (50 mm) high letters. The word "DANGER" shall be in white letters on a red background and the words "HIGH VOLTAGE" shall be in black letters on a white background.

2. Arc-Flash Warning Label: Self-adhesive labels on the outside of the high-voltage compartment door(s), warning of potential electrical arc-flash hazards and appropriate personal protective equipment required.

2.12 SOURCE QUALITY CONTROL

A. Factory Tests: Comply with requirements in IEEE C37.60 and IEEE C37.74 for testing procedures.

1. Circuit Resistance Test: Verify that switchgear contacts have been properly aligned and current transfer points have been properly assembled.

2. Power-frequency dry withstand voltage test.

3. Dielectric withstand test; one-minute dry power-frequency.

4. Calibrate overcurrent devices for conformance to published time-current characteristic curves.

5. Operating tests shall verify the following:

a. Switch position indicators and contacts are in the correct position for both the open and closed positions.

b. Insulating medium quantity indicator (if provided) is functioning properly.

c. Circuit configuration is shown correctly.

d. Mechanical interlocks are in place and operative.

e. Position and polarity of current transformers meets requirements.

f. Control, secondary wiring, and accessory devices are connected correctly.

g. Devices and relays actually operate as intended. Circuits for which operation is not feasible shall be checked for continuity.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Upon delivery of switchgear and prior to unloading, inspect equipment for damage.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 8

1. Examine tie rods and chains to verify they are undamaged and tight and that blocking and bracing are tight.

2. Verify that there is no evidence of load shifting in transit and that readings from transportation shock recorders, if equipped, are within manufacturer's recommendations.

3. Examine switchgear for external damage, including dents or scratches in doors and sill, and termination provisions.

4. Compare switchgear and accessories received with the bill of materials to verify that the shipment is complete. Verify that switchgear and accessories conform to the manufacturer's quotation and Shop Drawings. If the shipment is not complete or does not comply with project requirements, notify the manufacturer in writing immediately.

5. Unload switchgear, observing packing label warnings and handling instructions.

6. Open compartment doors and inspect components for damage or displaced parts, loose or broken connections, cracked or chipped insulators, bent mounting flanges, dirt or foreign material, and water or moisture.

B. Handling:

1. Handle switchgear, according to manufacturer's recommendations; avoid damage to the enclosure, termination compartments, base, frame, and internal components. Do not subject switchgear to impact, jolting, jarring, or rough handling.

2. Transport switchgear upright to avoid internal stresses on equipment mounting assemblies. Do not tilt or tip switchgear.

3. Use spreaders or a lifting beam to obtain a vertical lift and to protect switchgear from straps bearing against the enclosure. Lifting cable pull angles may not be greater than 15 degrees from vertical.

4. Do not damage structure when handling switchgear.

C. Storage:

1. Switchgear may be stored outdoors. If possible, store switchgear at final installation locations on concrete pads. If dry concrete surfaces are not available, use pallets of adequate strength to protect switchgear from direct contact with the ground. Ensure switchgear is level.

2. Protect switchgear from physical damage. Do not store switchgear in the presence of corrosive or explosive gases.

3. Store switchgear with compartment doors closed.

D. Examine roughing-in of conduits and grounding systems to verify the following:

1. Wiring entries comply with layout requirements.

2. Entries are within conduit-entry tolerances specified by manufacturer and no feeders have to cross section barriers to reach load or line lugs.

E. Pre-Installation Checks:

1. Verify removal of any shipping bracing after placement.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 9

F. Verify that ground connections are in place and that requirements have been met. Maximum ground resistance shall be 5 ohms at switchgear location.

G. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 SWITCHGEAR INSTALLATION

A. Comply with NECA 1.

B. Equipment Mounting:

1. Install switchgear on cast-in-place concrete equipment base(s). Comply with requirements for equipment bases and foundations.

2. Comply with requirements for vibration isolation and seismic control devices.

C. Install level and plumb, tilting less than 1.5 degrees when energized.

D. Maintain minimum clearances and workspace at equipment according to manufacturer's written instructions and NFPA 70.

E. Maintain minimum clearances and workspace at equipment according to manufacturer's written instructions and IEEE C2.

3.3 CONNECTIONS

A. Ground equipment.

1. For counterpoise, use tinned bare copper cable not smaller than No. 4/0 AWG, buried not less than 30 inches (765 mm) below grade interconnecting the grounding electrodes.

Bond surge arrester and neutrals directly to the switchgear enclosure and then to the grounding electrode system with bare copper conductors, sized as shown. Keep lead lengths as short as practicable with no kinks or sharp bends.

2. Fence and equipment connections shall not be smaller than No. 4 AWG. Ground fence at each gate post and corner post and at intervals not exceeding 10 ft. (3050 mm). Bond each gate section to the fence post using 1/8 by 1 inch (3 by 25 mm) tinned flexible braided copper strap and clamps.

3. Make joints in grounding conductors and loops by exothermic weld or compression connector.

4. Terminate all grounding and bonding conductors on a common equipment grounding terminal on the switchgear enclosure.

5. Complete the switchgear grounding and surge protector connections prior to making any other electrical connections.

B. Connect wiring.

Design and Construction Division Michigan State Police – Headquarters Switchgear Replacement and Associated Upgrades

MEDIUM-VOLTAGE, SWITCHGEAR 261329 - 10

1. Maintain air clearances between energized live parts and between live parts and ground for exposed connections in accordance with manufacturer recommendations.

2. Bundle associated phase, neutral, and equipment grounding conductors together within the switchgear enclosure. Arrange conductors such that there is not excessive strain on the connections that could cause loose connections. Allow adequate slack for expansion and contraction of conductors.

C. Terminate medium-voltage cables in incoming section of switchgear.

3.4 SIGNS AND LABELS

A. Comply with the installation requirements for labels and signs.

B. Install warning signs as required to comply with OSHA 29 CFR 1910.269.

3.5 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

B. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections.

C. Perform tests and inspections with the assistance of a factory-authorized service representative.

D. General Field Testing Requirements:

1. Comply with the provisions of NFPA 70B, "Testing and Test Methods" chapter.

2. Perform each visual and mechanical inspection and electrical test. Certify compliance with test parameters.

3. After installing switchgear but before primary is energized, verify that grounding system at the switchgear is tested at the specified value or less.

4. After installing switchgear and after electrical circuitry has been energized, test for compliance with requirements.

E. Medium-Voltage Switchgear Field Tests:

1. Visual and Mechanical Inspection:

a. Verify that current and voltage transformer ratios correspond to Drawings.

b. Inspect bolted electrical connections using calibrated torque-wrench method according to manufacturer's published data or NETA ATS, Table 100.12. Bolt-torque levels shall be according to manufacturer's published data. In the absence of manufacturer's published data, use NETA ATS, Table 100.12. Investigate values

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that deviate from those of similar bolted connections by more than 50 percent of the lowest value.

c. Confirm correct operation and sequencing of electrical and mechanical interlock systems.

1) Attempt closure on locked-open devices. Attempt to open locked-closed devices.

2) Make key exchange with devices operated in off-normal positions.

d. Inspect control power transformers.

1) Inspect for physical damage, cracked insulation, broken leads, tightness of connections, defective wiring, and overall general condition.

2) Verify that primary and secondary fuse or circuit breaker ratings match Drawings.

2. Electrical Tests:

a. Inspect bolted electrical connections using a low-resistance ohmmeter to compare bolted resistance values to values of similar connections. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value.

b. Perform dc voltage insulation-resistance tests on each bus section, phase-to-phase and phase-to-ground, for one minute. If the temperature of the bus is other than plus or minus 20 deg C, adjust the resulting resistance as provided in NETA ATS, Table 100.11.

1) Insulation-resistance values of bus insulation shall be according to manufacturer's published data. In the absence of manufacturer's published data, comply with NETA ATS, Table 100.1. Investigate and correct values of insulation resistance less than manufacturer's recommendations or NETA ATS, Table 100.1.

2) Do not proceed to the dielectric withstand voltage tests until insulation-resistance levels are raised above minimum values.

c. Perform a dielectric withstand voltage test on each bus section, each phase-to-ground with phases not under test grounded, according to manufacturer's published data. If manufacturer has no recommendation for this test, it shall be conducted according to NETA ATS, Table 100.2. Apply the test voltage for one minute.

1) If no evidence of distress or insulation failure is observed by the end of the total time of voltage application during the dielectric withstand test, the test specimen is considered to have passed the test.

d. Perform insulation-resistance tests on control wiring with respect to ground.

Applied potential shall be 500 V dc for 300 V-rated cable and 1000 V dc for

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600 V-rated cable. Test duration shall be one minute. For units with solid-state components or control devices that cannot tolerate the applied voltage, follow the manufacturer's recommendation.

1) Minimum insulation-resistance values of control wiring shall not be less than two megohms.

e. Voltage Transformers:

1) Perform secondary wiring integrity test. Verify correct potential at all devices.

2) Verify secondary voltages by energizing the primary winding with system voltage.

f. Perform current-injection tests on the entire current circuit in each section of switchgear.

1) Perform current tests by secondary injection with magnitudes such that a minimum current of 1.0 A flows in the secondary circuit. Verify correct magnitude of current at each device in the circuit.

2) Perform current tests by primary injection with magnitudes such that a minimum of 1.0 A flows in the secondary circuit. Verify correct magnitude of current at each device in the circuit.

g. Perform system function tests according to "System Function Tests" Article.

h. Verify operation of space heaters.

i. Perform phasing checks on double-ended or dual-source switchgear to ensure correct bus phasing from each source.

F. Medium-Voltage Vacuum Interrupter Field Tests:

1. Visual and Mechanical Inspection:

a. Inspect physical and mechanical condition.

b. Inspect anchorage, alignment, grounding, and required clearances.

c. Verify that maintenance devices such as special tools and gages specified by the manufacturer are available for servicing and operating the breaker.

d. Verify the unit is clean.

e. Perform mechanical operation tests on operating mechanism according to manufacturer's published data.

f. Measure critical distances on operating mechanism as recommended by the manufacturer. Critical distances of the operating mechanism shall be according to manufacturer's published data.

g. Verify cell fit and element alignment.

h. Verify racking mechanism operation.

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i. Verify appropriate lubrication on moving current-carrying parts and on moving and sliding surfaces.

j. Verify appropriate lubrication on moving current-carrying parts and on moving and sliding surfaces.

k. Perform time-travel analysis. Travel and velocity values shall be according to manufacturer's published data.

l. Record as-found and as-left operation counter reading. Operation counter shall advance one digit per close-open cycle.

2. Electrical Tests:

a. Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to ground with switch closed, and across each open pole. Apply voltage according to manufacturer's published data. In the absence of manufacturer's published data, comply with NETA ATS, Table 100.1. Insulation-resistance values shall be according to manufacturer's published data. In the absence of manufacturer's published data, comply with NETA ATS, Table 100.1. Investigate and correct values of insulation resistance less than this table or manufacturer's recommendations. Dielectric-withstand-voltage tests shall not proceed until insulation-resistance levels are raised above minimum values.

b. Perform a contact/pole-resistance test. Compare bolted connection resistance values to values of similar connections. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value.

Microhm or dc millivolt drop values shall not exceed the high levels of the normal range according to manufacturer's published data. If manufacturer's published data is not available, investigate values that deviate from adjacent poles or similar switches by more than 50 percent of the lowest value.

c. Perform minimum pickup voltage tests on trip and close coils according to manufacturer's published data. Minimum pickup voltage of the trip and close coils shall comply with manufacturer's published data. In the absence of manufacturer's published data, comply with NETA ATS, Table 100.20.

d. Verify correct operation of any auxiliary features, such as electrical close and trip operation, trip-free operation, and anti-pump function. Auxiliary features shall operate according to manufacturer's published data.

e. Trip circuit breaker by operation of each protective device. Reset trip logs and indicators.

f. Perform power-factor or dissipation-factor tests on each pole with the breaker open and each phase with the breaker closed. Power-factor or dissipation-factor values shall comply with manufacturer's published data.

g. Perform vacuum bottle integrity (dielectric-withstand-voltage) test across each vacuum bottle, with the contacts in the "open" position according to manufacturer's published data. If no evidence of distress or insulation failure is observed by the end of the total time of voltage application during the vacuum bottle integrity test, the specimen is considered to have passed the test.

h. Perform a dielectric-withstand-voltage test according to manufacturer's published data. If no evidence of distress or insulation failure is observed by the end of the

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total time of voltage application during the dielectric-withstand-voltage test, the specimen is considered to have passed the test.

G. Microprocessor-Based Protective Relay Field Tests:

1. Visual and Mechanical Inspection:

a. Record model number, style number, serial number, firmware revision, software revision, and rated control voltage.

b. Verify operation of light-emitting diodes, display, and targets.

c. Record passwords for each access level.

d. Clean the front panel and remove foreign material from the case.

e. Check tightness of connections.

f. Verify that the frame is grounded according to manufacturer's instructions.

g. Set the relay according to results.

h. Download settings from the relay. Print a copy of the settings for the report and compare the settings to those specified in the coordination study.

2. Electrical Tests:

a. Perform insulation-resistance tests from each circuit to the grounded frame according to manufacturer's published data.

b. Apply voltage or current to analog inputs, and verify correct registration of the relay meter functions.

c. Functional Operation: Check functional operation of each element used in the protection scheme.

d. Control Verification:

1) Functional Tests:

a) Check operation of all active digital inputs.

b) Check output contacts or silicone-controlled rectifiers, preferably by operating the controlled device, such as circuit breaker, auxiliary relay, or alarm.

c) Check internal logic functions used in protection scheme.

d) Upon completion of testing, reset min/max recorders, communications statistics, fault counters, sequence-of-events recorder, and event records.

2) In-Service Monitoring: After the equipment is initially energized, measure magnitude and phase angle of inputs and verify expected values.

H. Ground Resistance Test:

1. Visual and Mechanical Inspection:

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a. Verify ground system complies with the Contract Documents and NFPA 70 "Grounding and Bonding" Article.

b. Inspect physical and mechanical condition. Grounding system electrical and mechanical connections shall be free of corrosion.

c. Inspect bolted electrical connections using a calibrated torque-wrench method according to manufacturer's published data or NETA ATS, Table 100.12. Bolt-torque levels shall be according to manufacturer's published data. In the absence of manufacturer's published data, use NETA ATS, Table 100.12. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value.

d. Inspect anchorage.

2. Electrical Tests:

a. Perform fall-of-potential or alternative test according to IEEE 81 on the main grounding electrode or system. The resistance between the main grounding electrode and ground shall be no more than 5 ohms maximum ground resistance value specified in the "Examination" Article.

b. Perform point-to-point tests to determine the resistance between the main grounding system and all major electrical equipment frames, system neutral, and derived neutral points. Investigate point-to-point resistance values that exceed

0.5 ohms. Compare equipment nameplate data with Contract Documents.

c. Inspect bolted electrical connections for high resistance using a low-resistance ohmmeter to compare bolted connection resistance values to values of similar connections. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value.

d. Inspect physical and mechanical condition.

e. Inspect anchorage.

I. Switchgear will be considered defective if it does not pass tests and inspections.

J. Prepare test and inspection reports.

3.6 SYSTEM FUNCTION TESTS

A. System function tests shall prove the correct interaction of sensing, processing, and action devices. Perform system function tests after "Field Quality Control" tests have been completed and all components have passed specified tests.

1. Develop test parameters and perform tests for evaluating performance of integral components and their functioning as a complete unit within design requirements and manufacturer's published data.

2. Verify the correct operation of interlock safety devices for fail-safe functions in addition to design function.

3. Verify the correct operation of sensing devices, alarms, and indicating devices.

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3.7 FOLLOW-UP SERVICE

A. Infrared Inspection: Perform the survey during periods of maximum possible loading. Remove all necessary covers prior to the inspection.

1. After Substantial Completion, but not more than 60 days after Final Acceptance, perform infrared inspection of the electrical power connections of the switchgear.

2. Instrument: Inspect distribution systems with imaging equipment capable of detecting a minimum temperature difference of 1 deg C at 30 deg C.

3. Record of Infrared Inspection: Prepare a certified report that identifies the testing technician and equipment used, and lists the results as follows:

a. Description of equipment to be tested.

b. Discrepancies.

c. Temperature difference between the area of concern and the reference area.

d. Probable cause of temperature difference.

e. Areas inspected. Identify inaccessible and unobservable areas and equipment.

f. Identify load conditions at time of inspection.

g. Provide photographs and thermograms of the deficient area.

4. Act on inspection results according to the recommendations of NETA ATS, Table

100.18. Correct possible and probable deficiencies as soon as Owner's operations permit.

Retest until deficiencies are corrected.

3.8 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain systems.

END OF SECTION 261329