South Arroyo Boulevard Street Light Conversion Project February 4, - - PowerPoint PPT Presentation

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South Arroyo Boulevard Street Light Conversion Project February 4, - - PowerPoint PPT Presentation

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Department of Public Works South Arroyo Boulevard Street Light Conversion Project February 4, 2020 HIGH VOLTAGE SERIES CIRCUITS PHASE I Department of Public Works Why are we here again? Replacement fixture color. Proposed new light

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SLIDE 1

Department of Public Works

South Arroyo Boulevard Street Light Conversion Project

February 4, 2020

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SLIDE 2

Department of Public Works

HIGH VOLTAGE SERIES CIRCUITS PHASE I

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Why are we here again?

  • Replacement fixture color.
  • Proposed new light locations from original plans.
  • Petition for additional lights.
  • Construction schedule including Public Works and

Water & Power Departments.

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SLIDE 3

Department of Public Works

Typical HV Series Circuits Diagram

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  • Open loop series circuit requires 6.6 amps and

variable high voltage dependent on the number of lights on system.

  • Since the lights are daisy-chained together, if one

lamp fails, the whole circuit would go dark.

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SLIDE 4

Department of Public Works

Low Voltage Multiple Circuits Diagram

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  • 110/220 volt system that utilizes multiple circuits in parallel with

separate lighting controls.

  • Smaller circuits equals easier troubleshooting and less affected

lights when circuit is under repair.

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Department of Public Works

Safety Factor

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 Public Safety

  • Due to their aged infrastructure, HV series systems

experience intermittent service outages affecting entire neighborhoods.  Worker Safety

  • Lower voltage (120/240 volts) systems are safer to

work on than high voltage (1,000 plus volts) systems.

  • Frequent grounding problems and lead shielded

conductors are prone to electrical shorts that can yield greater risk of electrocution. Use of thermoplastic insulated conductors instead of lead shielded conductors reduces the risk.

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SLIDE 6

Department of Public Works

Reliability Factor

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 Availability of Obsolete Equipment – Difficulty Servicing the System

  • Transformers are difficult to procure due to
  • bsolescence and typically cost 10 times

more than (low volt) counterparts.

  • Heavy duty incandescent bulbs are no

longer produced and City has limited supply of replacement stock.

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SLIDE 7

Department of Public Works

HIGH VOLTAGE SERIES CIRCUITS PHASES MASTER PLAN

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SLIDE 8

Department of Public Works

HIGH VOLTAGE SERIES CIRCUITS PHASE I

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Department of Public Works

HIGH VOLTAGE SERIES CIRCUITS PHASE I

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Phase I consists of:

  • S-048 San Rafael Ave from La Loma Rd to Colorado

Blvd and others.

  • S-155 Marianna Rd from Cul-de-sac to Ave 64 and
  • thers.
  • S-263 Arroyo Blvd from South City Limits to

Westminster Dr. and others.

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SLIDE 10

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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Existing South Arroyo Boulevard system consists of various light fixtures:

  • Radial shape light fixture with incandescent lamp on

wooden luminaire arm.

  • Old cobra head light fixture with high pressure sodium

lamp.

  • Pendant light fixture with incandescent lamp.
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SLIDE 11

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Existing Radial Shape Light

Fixture in High Voltage Series Circuit System Arroyo Blvd / Westminster Dr

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SLIDE 12

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Old Aluminum Radial Shape

Light Fixture Replacement (20%)

  • Existing Original Metal Radial

Shape Light Fixture

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SLIDE 13

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Proposed Radial Shape Light

Fixture & Mast Arm in Secondary System Arroyo Blvd / Westminster Dr

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SLIDE 14

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Another New Radial

Shape Light Fixture Test Location. 460 South Arroyo Blvd

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SLIDE 15

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • New Radial Shape Light Fixture
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Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Existing Cobra Head Light

Fixture in High Voltage Series Circuit System

  • Replaced with New Cobra

Head or Radial Shape Fixture 880 S Arroyo Blvd

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SLIDE 17

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Proposed Cobra Head Fixture

with LED Light Connecting to Secondary System

1265 Grand Ave

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SLIDE 18

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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  • Modify Existing Pendent Light

Fixture in High Voltage Series Circuit System to LED Light in Secondary System. S Arroyo Blvd / La Loma Rd

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SLIDE 19

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area)

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Scope of Work & Engineering Estimate:

  • Remove existing luminaire and arm from existing

series circuit.

  • Install new radial LED fixture and mast arm.
  • Connect all new replacement fixture to secondary

circuit on existing power pole.

  • Provide all secondary overhead circuit by W&P.
  • Remove existing series circuit transformer by W&P.
  • Construction Cost ($450,000)
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SLIDE 20

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) Summary

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Light fixtures to be replaced and/or new installed:

  • 77 Radial Shape LED
  • 9 Cobra Head LED

Light fixtures to be modified:

  • 3 Pendant Shape LED

New light fixtures to be installed :

  • To be Determined by Petitions

New secondary power feed required:

  • 35 Overhead Feed Point by W&P
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SLIDE 21

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) Summary

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Description Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Total 1 Remove luminaire from existing circuit, replace with radial LED fixture and mast arm, and connect to secondary circuit on existing power pole 13 9 11 4 5 7 9 12 70 2 Remove existing mast arm and cobra head fixture, replace with radial LED fixture and mast arm 2 2 3 7 3 Remove existing cobra head fixture, replace with LED cobra head fixture, and connect to secondary circuit from existing power pole 4 5 9 4 Modify existing pendant fixture, connect to secondary circuit to existing power pole 2 1 3 5 provide secondary power feed on power pole 6 8 9 6 2 3 1 35

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Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) ADDITIONAL LIGHTING PETITION

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REQUEST FOR ADDITIONAL LIGHTING:

  • Secondary power feed on utility pole will be ready per

design, new luminaire and arm can be added to the existing utility pole(s).

  • Resident may request the additional lighting near their

residence.

  • Request will be evaluated, petition form will be

provided by staff.

  • Petition form shall be signed by the neighbors who

may be affected.

  • Additional light may be installed as part of the project

(normally work order will be sent to Operations.)

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Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) ADDITIONAL LIGHTING PETITION

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Want a new light on power pole #19907MP ?

  • Signatures are required from #156, 157, 160 and 165 California Terrace.
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Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) ADDITIONAL LIGHTING PETITION

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Field check:

  • Power pole number;
  • Availability of secondary power
  • Number of affective residents
  • Light type and wattage
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SLIDE 25

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) ADDITIONAL LIGHTING PETITION

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PETITION FORM AND LETTER:

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Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) ADDITIONAL LIGHTING PETITION

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PETITION FORM AND LETTER SAMPLE:

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SLIDE 27

Department of Public Works

SERIES CIRCUIT S-263 (Arroyo Blvd Area) PROJECT SCHEDULE

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  • End of February 2020 – Additional lighting petition

forms need to be submitted.

  • March 2020 – Finalize design of lighting sytem.
  • March to September 2020 – Material procurement

including arms and fixtures.

  • May 2020 – PWP begins utility pole replacements and

installation of secondary power.

  • September 2020 - Public Work begins replacement of

luminaire arms and fixtures, and installing new luminaires per petition.

  • Post project – PWP starts to remove existing high

voltage (primary overhead) circuit.

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Department of Public Works

Color Temperature…What is it?

All lighting sources emit a range of wavelengths, which, when combined, produce the color of light perceived by the human eye.

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Department of Public Works

Color Temperature

Corrected Color Temperature (CCT) is a shorthand way to describe the light’s color, in terms of its apparent “warmth” or “coolness”. CCT is measured in kelvin (K).

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Department of Public Works

Questions

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Richard Yee, PE, PTOE Principal Engineer Department of Public Works (626) 744-4643 ryee@cityofpasadena.net Elvin Jiang, PE Project Engineer Department of Public Works (626) 744-7103 ejiang@cityofpasadena.net 100 North Garfield Ave Room N306, Pasadena, CA 91101