SO-1862 Electircal Infrastructure for EV Chargers and BESS Addendum 1.pdf

PRE-BID ADDENDUM NO. 1

TO SPECIFICATION 28172.01

OWNER: Lansing Public School District

519 West Kalamazoo Street

Lansing, Michigan 48911

PROJECT: Four Battery Energy Storage Systems & EV Chargers Project

North Environmental Science Magnet School

Pattengill Biotechnical Magnet School

Wexford Montessori Academy

Cavanaugh STEAM Elementary School

CONTRACT FOR: Construction

ENGINEER: CTC Engineering, LLC

3915 Research Park Dr., Ste. A-8

Ann Arbor, Michigan 48108

INTENT: The following is intended to be a clarification to the Contract Documents based upon the questions asked in review of the documents.

DRAWINGS: The following drawings accompany this Addendum:

• Sheet 28172.01, E-1 through E-8

PROJECT MANUAL: -No sections are reissued with this Addendum-

CLARIFICATIONS:

A. The following questions and associated clarifications are made part of and binding to the

Contract documents:

1. Accepted equivalent BESS: Section 26 3326 names Piller systems or accepted equal. What is the approval process and deadline for an alternate manufacturer, including Uptime’s PBS/PCS? Please identify required comparison data, certification evidence and any restrictions on charging architecture or skid/container configurations.

Response [gtk]: The proposed substitute, complete with cut sheets and submittals, must be sent to the Owner for their acceptance before the close of business November 5, 2026. The acceptance or rejection shall be made before the close of business, November

9, 2026.

2. Capacity and operating requirements: For the specified 240 kW/982.4 kWh and

120 kW/491.2 kWh systems, are energy ratings nominal or usable? Please provide the required operating sequence, demand-limit settings, load profiles and reserve state of charge, and clarify whether backup, islanding, black start or export is required beyond peak shaving and time-of-use operation.

Response [gtk]: The energy ratings are the nominal values.

3. Final design and pricing basis: Drawing E-1 is labeled preliminary/not for construction and includes placeholder transformer and CT values. Will complete bid-level drawings, equipment ratings, conductor sizes, protection settings and site details be issued before bids? Please define contractor versus engineer responsibility for final design and changes after award.

Response [gtk]: More complete project documents have been made available as part of this response. Any final design and changes after award shall be by the Engineer of

Record.

4. Owner-furnished charger configuration: Section 26 3323 names Zerova DS60 and

Heliox/Siemens 60 kW equipment but describes 30 kW output and 33 kVA input.

Please provide the final model, quantity per site, connectors, input requirements, certified installation drawings and delivery schedule, and clarify unloading, storage and damage responsibility.

Response [gtk]: The bus chargers are by the Owner and the most up-to-date information is attached.

5. Controls and bidirectional integration: Please clarify the charger language allowing power from connected buses to the source. Is bidirectional operation required, and which vehicles and equipment support it? Please define the BESS, charger, existing solar and building-control interfaces, communications protocols, network access, software licenses and party responsible for integration.

Response [gtk]: Bidirectional operation is a requirement. Any interfaces between the new and existing equipment shall be by the Engineer of Record.

6. Utility and permitting status: Under Section 26 3326, what LBWL interconnection, LARA and fire-marshal approvals are already secured? Please provide utility requirements, fees, study results and utility-owned work, and clarify responsibility for protection studies, metering, service upgrades and approval-related schedule impacts.

Response [gtk]: The submission to the LARA and fire marshal shall be by the Engineer of Record. There are no utility requirements for this project. Protection studies shall be by the Engineer of Record. Any fees that are the responsibility of the Contractor are listed in the Project Documents.

7. Enclosures and site construction: Section 26 3326 references NEMA 1 enclosures.

Please confirm indoor/outdoor location and required environmental ratings at each site, including heating/cooling and fire protection. Please also define pad/structural design, trenching, restoration, bollards, access and school shutdown restrictions.

Response [gtk]: The battery equipment shall be in a NEMA 1 environment and the chargers are in a NEMA 3R enclosure.

8. Commissioning and maintenance pricing: Please provide acceptance tests and performance criteria for BESS and chargers, required OEM attendance, training and warranty start date. For the included first year and optional years 2–5 of

BESS service, please define PM frequency, response times, monitoring, software, parts, labor, battery coverage and any required capacity guarantee.

Response [gtk]: This information shall be by the supplier.

9. Funding and contractor obligations: Please identify each funding source and provide all applicable award conditions and contractor flow-downs, including the governing wage determination, certified payroll, domestic-content requirements or waivers, reporting and completion deadlines. Please clarify whether grant-related responsibilities extend beyond the published construction scope.

Response [gtk]: Not applicable.

10. Bid terms and schedule corrections: Please confirm November 12, 2026 at 2:00 p.m. local time as the deadline, correcting the timeline’s Wednesday/EDT references, and reconcile the 90-day bid-hold requirement with the proposal’s 60-day language. Please confirm award timing, the mid-August 2027 completion requirement, whether site-specific awards are permitted, and availability of pre-bid minutes and a site walkthrough.

Response [gtk]: The dates above are confirmed. The award of separate site contracts is spelled out in the specifications. There are no “walk through” minutes.

11. Reference: Official SO-1862 package, PDF pp. 1, 4–6, 132–137 and drawing E-1

(p. 138). Please address any superseding addenda in the responses.

Response [gtk]: There was no other addenda with this project.

12. Can you share the contact for the BESS that you mentioned at the pre-bid meeting.

Response [gtk]: The contacts for the BESS’s are as follows:

• Ms. Karolyn Busch, Enterprise Account Executive

TX: 617/865-2653

CL: 603/674-2192

EM: kbusch@sanalife.io

• Mr. Mike Leary, Product Solutions Specialist

Medi-Products

281 Fields Lane Suite 2B

Brewster, NY 10509

EM: mike@mediproducts.net

TX: 203/487-7423

- END OF PRE-BID ADDENDEM #1 -

mailto:kbusch@sanalife.io mailto:mike@mediproducts.net

Heliox 60 kW

CHARGER

Smart. Efficient. Reliable.

Heliox’s most adaptative and compact solution. The Heliox 60 kW charger is a versatile, user-friendly solution suitable for a wide range of vehicles, including cars, buses, and trucks. It offers seamless plug-and-play functionality, making it an ideal choice for various charging needs, regardless of location or time.

✓ Adaptative design: It can adapt and expand as needed, offering options for hardwired or portable setups, networked or standalone operation, and the ability to deploy a single charger or multiple units, providing you with full control over your charging solution.

✓ Plug and play experience: Charging starts automatically after plug in. With 30A (25 kW), 60A (50 kW), and Max (60 kW) input current selections, the Heliox 60 kW charger offers flexibility to match your charging needs.

✓ Reliability on-the-go: Experience fast DC charging wherever you need it. In workshops, depots or testing environment; this charger provides charging capabilities anywhere, anytime. It is an ideal solution to start your electrification journey.

Convenient charging; anytime and anywhere

Number of dispensers in the system Power Options

60 kW

Max.

60A 30A

Versatile in charging power options

Versatile in mounting

Versatile in charging settings

✓ The Heliox 60 kW stands up to daily wear and tear in ways other portable chargers simply cannot.

✓ With a NEMA 3R-rated enclosure, the charger can be safely operated indoors and outdoors.

✓ Adjust your charger AC input situations where your power supply may be limited.

✓ The Heliox 60 kW is the perfect EV charging companion, now and in the future.

✓ Options for hardwired or portable setups, networked or standalone operation.

Designed with scalability and convenience in mind, the Heliox 60's form factor allows for low-profile installations, complemented by a range of accessories including both wall-mount and floor-mounted pedestal options, or a mobile cart configuration.

Adjust your charger AC input with the turn of a dial, enabling you to activate sessions in situations where your power supply may be limited.

Max.

60A 30A

Max.

60A 30A

On wheels Wall mounted Pedestal

General Heliox 60 kW

HE9823005-01-XXX

Charging standard SAE J1772 (CCS type-1)

Communication standard

DIN 70121

ISO15118-1/2/3 ed1

Compliance and safety

UL2202, UL2231, CSA C22.2

No. 346, Energy Star

Power factor above 50% rated > 0.98

Peak efficiency ≥ 95%

Dielectric withstand 3,000 V

Network cellular 4G modem or Ethernet

Back office OCCP 1.6J / OCPP 2.0 ready

Temperature range -22 °F to +113 °F 1

Operational noise level (at 77F) < 60 dB(A) @ 45"

System weight 230 lbs

Protection rating NEMA 3R

Mounting options Mobile chassis, wall mount, pedestal

Display 7" LCD

Charging status indicator LED light stack, LCD display

Cable length 5 m and 7 m 2

Warranty 24 months

Input

Connections, frequency 3P + G 480 VAC, 47 - 63 Hz

Current limit values

30A / 60A / Max (user selected)

Full load / idle power 65 kVA / 100 VA

Line-line voltage range 480 VAC +6/-13%, 60 Hz

Max. AC phase current 90A, inrush current limited

Output

DC voltage range 200 - 1,000 V

Rated DC power 60 kW

Power limits

25 kW (@ 30A AC input current) 50 kW (@ 60A AC input current) 60 kW (@ Max. input current)

Max. DC current 150A

D C ou tp ut v ol ta tg e

(V

DC Output Current (A)

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160

Rectification mode

V max

P max

I maxVmin = 200 V DC Pmax = 60 kW

Dimensions

Power curves

Mounted H: 35" W: 26.4" D: 17"

Mobile H: 41.1" W: 29.4" D: 18.6"

Ready Charging Error

Heliox 60 kW

1 Derating may apply at extremes

2 Added cost for 7m

Status indicators Provides real-time information about the state of charge.

Blue charging lights display approximate SOC.

CHARGER

Ordering Guide

Heliox 60 kW Mobile

Heliox 60 kW Wall Mounted

Heliox 60 kW Pedestal

UL Buy America-Compliant 5 m

UL Buy America-Compliant 7 m

Accessory Pedestal Mount

HE9823005-01-BMA

HE9823005-01-BAC

HE9823005-01-BAA

HE9823005-01-BDA

HE9823005-01-BAA

HE9823005-01-BDA

HN810222

Heliox 60 kW

Preventative maintenance is available. For details, please contact your local Siemens or Heliox Business Development Manager/Distributor.

SO-1862 Virtual Pre-Bid Meeting Attendee List as captured on Google Meet

October 26, 2026 3:00PM

# Name Email Company

1 Jonathan Laing j.laing@lansingschools.net LSD

2 Todd todd.coe@lansingschools.net LSD

3 Glenn Keates glenn.keates@ctcengineer.com CTC

4 Gavin Shafer gavin.shafer@ctcengineer.com CTC

5 Mike Bozung mike@centennial-electric.com Centennial Electric

6 Ryan Hull Not captured Superior Electric of Lansing

7 Mike H. Not captured Superior Electric of Lansing

8 Rick Shea Not captured RM Electric

9 Taylor Lotre taylor.lotre@gmail.com Consolidated Electrical Contractors

10 Bill Policastro wjpolicastro@gmail.com Uptime EV Charger Inc

11 Matt mdwintjes@gmail.com Windemuller

12 Caroline Brannock mcbrannn@gmail.com FENECON USA

13 LB Electric Not captured LB Electric

14 BMG Admin contact@buildingmaterialgroup.com Building Material Group

15 Claire Disch claireedisch@gmail.com Unknown

16 Andrew Dunn Not captured Unknown

17 Jason Mills millsjas1@gmail.com Unknown

18 Derek Smith derekjacksonsmith@gmail.com Unknown

19 Shane Wood swlasthero@gmail.com Unknown

20 Anthony DeGuzman anthony@greenllink.education GreenLink Education mailto:j.laing@lansingschools.net mailto:todd.coe@lansingschools.net mailto:glenn.keates@ctcengineer.com mailto:glenn.keates@ctcengineer.com mailto:mike@centennial-electric.com mailto:taylor.lotre@gmail.com mailto:wjpolicastro@gmail.com mailto:mdwintjes@gmail.com mailto:mcbrannn@gmail.com mailto:contact@buildingmaterialgroup.com mailto:claireedisch@gmail.com mailto:millsjas1@gmail.com mailto:derekjacksonsmith@gmail.com mailto:swlasthero@gmail.com mailto:anthony@greenllink.education