1401 Lakeside Drive, Suite 800 Oakland, CA 94612 Phone: 510-208-9523 Website: http://www.acgov.org/gsa/departments/ts/

COUNTY OF ALAMEDA

ADDENDUM No. 3

to

BIDDING DOCUMENTS

for

Project# 14011 Fremont Main Library UPS Installation

Due Date for Bid Modification and Attendees List of the Second Networking/Bidders Conference

Held on February 13, 2014

This County of Alameda, General Services Agency (GSA), RFP/Q Addendum has been electronically issued to potential bidders via e-mail. E-mail addresses used are those in the County’s Small Local Emerging Business (SLEB) Vendor Database or from other sources. If you have registered or are certified as a SLEB, please ensure that the complete and accurate e-mail address is noted and kept updated in the SLEB Vendor Database. This RFP/Q Addendum will also be posted on the GSA Contracting Opportunities website located at http://www.acgov.org/gsa/purchasing/bid_content/ContractOpportunities.jsp.

Bids for this project are due, March 14, 2014, no later than 2:00 PM. Bids for this project are due, February 28, 2014, no later than 2:00 PM.

Alameda County is committed to reducing environmental impacts across our entire supply chain. If printing this document, please print only what you need, print double-sided, and use recycled-content paper.

Exhibit C – Fremont Main Library UPS Installation

Page 1

Item 1 Due Date for Bids

Bids for this project are due, March 14, 2014, no later than 2:00 PM.

Item 2 List of Attendees to Second Bid Walk

Attachment 1

Item 3 Responses to Questions at Bid Walk #2

Q: What is the make and model of the owner’s UPS? A: see Attachment 2, to be installed by Contractor.

Additional questions will be addressed in forthcoming Addendum #4

Page 1 of 1 Rev. 2/26/09

C:\Users\jvirata\Documents\Attendee sign-in TEST\Project Name -Bidwalk Attendee Sign-in Summary.doc

PROJECT# 14011- FREMONT MAIN LIBRARY UPS INSTALLATION

MANDATORY PRE-SUBMITTAL NETWORKING CONFERENCE SIGN-IN SHEET

Held on February 13, 2014 at 2:00 PM

Attendees list of prior Pre-submittal Conference is available in Addendum #1

2450 Stevenson Blvd. Fremont, CA

Blank fields below indicate no information provided

Company Name & Address Contact Phone E-mail

SLE

B

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B

Loca

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MBE

WBE

MW

BE

Prim

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Sub

-Cont

Type

Deets Electric, Inc. 18413 Madison Ave. Castro Valley, CA 94546

Dave Deets P: 510.889.9454 F: 510.889.0322

dave@deets.com Y Y Y N N N Y Y C-10, B

Pullman Construction 21095 Loconomi Rd. Middletown, CA 95461

Bryan P: 707.355.0156 F:

pullmanconstruction@yahoo.com N N N Y

Alaska Refrigeration, Air Conditioning and Heating Co. 1651 27th Ave. Oakland, CA 94601

Dagoberto Sanchez

P: 510.385.0000 F: 510.261.5881

info@alaskahvacr.com Y Y Y Y HVACR/boiler C-20, C-38, C-4

Intelli-tech 1031 Serpentine Lane, Ste 101 Pleasanton, CA 94566

Mike Kitchin P: 925.484.3701 F: 925.426.5013

mkitchin@gotoitsi.com N N Y N N N N Y

Superior Electric 1031 Serpentine Lane, Ste 102 Pleasanton, CA 94566

Chris Roark P: 925.485.4460 F: 925.485.3028

croark@superior-hq.com Y N Y N N N Y Y

Summerhill Electric Inc. 5230 E 12th Street Oakland, CA 94601

Louis P: 510.536.7685 F:

summerhillelectricinc@yahoo.com Y Y

Contractor Bonding Assistance c/o Merriwether & Williams

P: 510.740.6922 x3 F:

victoria@imwis.com Bonding Assistance

Note: Questions and responses from this Conference will be posted in forthcoming Addendum #4

1

LIEBERT® APM™ 3-PHASE UPS: 15-90KVA/KW, 60HZ, 208VAC, SINGLE INPUT - SITE PLANNING DATA

Notes for Table 1 1. Nominal (Nom) current is based on full rated output load at nominal input voltage.2. Maximum (Max) current (125% of nominal) is short duration for battery recharge

conditions.3. UPS input and bypass cables must be run in separate conduit from output cables.4. Nominal battery voltage is shown at 2.0 volts/cell per NEC 480-2.5. For Single Input units only. For Dual Input units, see “Electrical Data

Specification Sheet, Dual Input 15-90kVA, Liebert APM.”6. Nominal rectifier AC input current (considered continuous) is based on full

rated output load. Maximum current includes nominal input current and maximum battery recharge current (considered non-continuous). Continuous and non-continuous currents are defined in NEC 215.Nominal AC output current (considered continuous) is based on full rated output load. Output breakers are either supplied by the customer or by usingthe optional Liebert Bypass Distribution Cabinet.

7. Minimum-sized grounding conductors to be per NEC 250-122. Parity-sizedground conductors are recommended. Neutral conductors to be sized for fullcapacity per NEC 310-15 (b)(4). References are per NEC 2008.

8. Wiring requirements: AC Input: 3-phase, 4-wire, plus groundAC Output: 3-phase, 3- or 4-wire, plus ground

9. All wiring is to be in accordance with national and local electric codes.10. Minimum access clearance is 36" (914mm) front; ventilation clearance is 24" (610mm)

above and 12" (305mm) in the rear.11. Top or bottom cable entry through removable access plates. Punch plate to suit conduit

size, then replace.12. Control wiring and power wiring must be run in separate conduit. 13. Dimensions shown include an internal battery (45kVA frame only).14. Weights shown do not include an internal battery nor optional cabinets or features.15. When a Liebert Bypass Distribution Cabinet is not used, the customer must supply the

input circuit breaker with a 120VAC shunt trip. The shunt trip drive capability is 8A.Additional Notes• If site configuration includes a backup emergency generator, it is recommended that the

engine generator set be properly sized and equipped for a UPS application. Generator options would typically include an isochronous governor (generator frequency regulation) and a UPS-compatible regulator (generator voltage regulation). Consult generator manufac-turer for required generator options and sizing.

• If site configuration includes an automatic transfer switch, refer to Liebert Power Line titled “Criteria for Application of Automatic Transfer Switches (ATS) With Uninterruptible Power Supply (UPS) Systems,” publication 91K-PLT-48-02. It is also recommended that the trans-fer switch be equipped with auxiliary contacts to provide a UPS “on generator” signal. Con-sult transfer switch manufacturer for required transfer switch options and sizing.

• If site configuration requires an external isolated maintenance bypass circuit, it should be noted that utility AC input might not be in phase with the UPS AC output. Consult an Emer-son sales representative or applications engineer.

BIB - Bypass Isolation BreakerMBB - Maintenance Bypass BreakerMIB - Maintenance Isolation Breaker

* External Overcurrent Protection by others

Field-supplied wiring

The UPS must be fed from a solidly grounded wye or delta AC source. Not for use with impedance-grounded systems, corner-grounded or high leg delta systems. For these applications, an isolation transformer must be installed between the AC feed and the UPS.

NOTE:Optional 54 pole, 225A for 45kVA frame only orOptional 54 pole, 400A for 90kVA frame only.

UAM01003REV. 2

2

© 2010 Liebert CorporationAll rights reserved throughout the world. Specifications subject to change without notice.® Liebert is a registered trademark of Liebert Corporation. All names referred to are trademarks or registered trademarks of their respective owners.SL-25605_REV3_09-11

Technical Support / Service United States800-543-2378powertech@emersonnetworkpower.comWeb site: www.liebert.com

1050 Dearborn DriveP.O. Box 29186Columbus, OH 43229

General Specifications

Table 1 Site Planning Data - 15-90kVA, 60Hz, 208VAC, Single InputUPS Rating Voltage AC Input Battery AC Output Mechanical Data Input CB

(customer-supplied)kVA kW Input Output

Current, A Rec.OPD

Nom.VDC

Max.Discharge

Current, A DimensionsWxDxH, in. (mm)

Unit Weight, lb. (kg) Heat Dis.BTU/hr (kWH)

Cooling AirCFM (m3/hr)Nom. Max. Nom. OPD 45kVA Frame 90kVA Frame

15 15 208 208 44 55 70 288 67 42 60

31.8x39.5x78.7(800x1000x2000)

919 (417) 705 (320) 3074 (0.9) 102 (173) 200Awith

120VACshunt trip

30 30 208 208 89 111 150 288 135 83 125 994 (451) 780 (354) 6147 (1.8) 204 (346)45 45 208 208 133 166 200 288 202 125 200 1069 (485) 855 (388) 9220 (2.7) 306 (519)60 60 208 208 177 221 300 288 269 167 225 NA 930 (422) 12,295 (3.6) 408 (692) 400A

with120VACshunt trip

75 75 208 208 221 276 350 288 335 208 300 NA 1005 (456) 15,368 (4.5) 510 (865)90 90 208 208 261 332 400 288 404 250 350 NA 1080 (490) 18,442 (5.4) 612 (1038)

See Notes for Table 1 (p. 1): 1 2,3,5,8,12 6 4 1,3,8,12 1,3,8,12 6 13 14 14 — — 15

Internal Battery

ModelBatteryCode

Battery Time (Minutes) Added Battery Weightlb. (kg)15kVA 30kVA 45kVA

HX100-FR FX 30 12 6 1248 (566)HX150-FR HX 49 21 12 1056 (479)

OUTPUTVoltage 208/120, 220/127VAC, 50/60Hz, 3-phase, 3- or 4-wire plus groundVoltageAdjustment Range ±5%

VoltageRegulation

1% for balanced load5% for 100% unbalanced load

DynamicRegulation

±5% deviation for 100% load step±1% for loss or return of AC input

TransientResponse Time Recover to ±5% of output voltage within 1/2 cycle

THD For linear loads, 1% THD; Less than 4% THD for 100% nonlinear loads without kVA/kW derating

PhasingBalance

120° ±1° for balanced load120° ±1.5° for 100% unbalanced load

FrequencyRegulation

±0.1% (single Liebert FlexPower™ assembly)±0.25% (six Liebert FlexPower assemblies)

Load PowerFactor Range 0.5 lagging to 0.9 leading without derating

Overload100% load, continuous;110% load, 60 minutes; 125% load, 10 minutes;150% load, 60 seconds, with true sinusoidal waveform

STANDARDSListed to UL 1778 UPS standards, and CSA certified. Meets current requirements for safe high performance UPS operation.

INPUTVoltage 208/120, 220/127VAC, 50/60Hz, 3-phase, 4-wire plus groundVoltage Range Without Derating +15%, -20%Frequency Range 40-70HzCurrent Distortion 3% maximum reflected THD at full loadCurrent Walk-Ins 5-35 seconds to full load (adjustable)Power Factor 0.99 full load, 0.98 half load

Surge Protection Sustains input surges w/o damage, per criteria in IEC 1000-4-5 (withsurge suppressor option ANSI C62.41 (IEEE 587) CAT A3 & B3

ENVIRONMENTALOperating Temperature UPS: 32° to 104°F (0-40°C); Battery: 68° to 86°F (20-30°C)Non-Operating Temperature -4° to 158°F (-20° to 70°C)Relative Humidity 0-95% non-condensingOperating Altitude Up to 3,300 ft. (1,000m) without derating

Acoustical Noise Less than 57 dBA typical (45kVA), 60 dBA typical (90kVA) 3.3 ft. (1m) from the unit