PROJECT: West Chester University,
Electrical System Upgrade - Schmidt Residence Hall
LOCATION: West Chester, PA
COMPLETION DATE: January 2005
SERVICES: Electrical Power Systems

OVERVIEW: The project involved the replacement of the building’s 500KVA dry-type unit substation with a new 750KVA transformer and 2000A 120/208VY secondary switchgear.

The project included the replacement of existing equipment with a new 750KVA dry-type unit substation and 2000Amp secondary switchgear in the electrical service vault.  Secondary panels and feeders were replaced  for many of the existing loads.  In addition, two new secondary panels were located on each floor of the eight floor structure and ultimately allowed for the addition of four  new duplex receptacles in each student dormitory rooms.  Arris performed all field investigation and developed the bidding document and construction  package for the project .  Arris is responsible for standard construction administration services on this project.

PROJECT: West Chester University,
Electrical System Upgrade - Tyson Hall
LOCATION: West Chester, PA
COMPLETION DATE: January 2005
SERVICES: Electrical Power Systems

OVERVIEW: The project involved the replacement of the building’s 500KVA dry-type unit substation with a new 750KVA transformer and 2000A 120/208VY secondary switchgear.

Tyson Hall is an eight story student dormitory consisting of three separate wings. New 600A risers were installed in each wing with a 150A 120,208VY 42 circuit panelboard installed on each floor to serve the dorm rooms in that wing. Two circuits with four receptacles were installed in each dorm room. Surface mounted raceway with tamper-proof hardware was utilized to transverse all building interiors.

The majority of work was completed during summer months when the building was not occupied with the transformer and switchgear change-out taking place over the Christmas Holidays. Temporary generator power was provided to power critical building systems during shutdown periods.

Arris completed all design activities and construction administration services for this project.

PROJECT: West Chester University,
15KV Electrical System Upgrade
LOCATION: West Chester, PA
COMPLETION DATE: October 2005
SERVICES: Electrical Power Systems

OVERVIEW: The project involves the upgrade of the remaining 5KV medium voltage power system on campus to 15KV operation.

The project includes the replacement of 15 building substations and the installation of an additional 15MVA substation class transformer at the New Street Substation. The substation is served at 34.5KV and requires a new 34.5 KV incoming SF6 switch and the removal of existing lattice structure , transformers and switchgear.

Improvements to the underground distribution system include the installation of approximately 2 miles of new 15 KV feeders to the north and south campus areas. Existing facilities served by the existing 5 KV feeders in the North campus area will be converted to dual 15 kv services. All new services consist of the installation of a new 15 kv SF6 automatic transfer switch and either a new 15 kv dry type transformer or liquid type pad mounted transformer.

Existing facilities being converted consist of many historical buildings including the Old Library, Main Hall and Recitation Hall.

In addition, a new underground duct bank will be constructed through much of the historical “Quad Area” on campus.

PROJECT: White Haven Center - Pennsylvania Department of General Services
LOCATION: Foster Township, Luzerne County, PA
COMPLETION DATE: March, 2002
SERVICES: Electrical Power Systems

OVERVIEW: Upgrade of the Electrical Distribution System.

This project consisted of the replacement of over 6 miles of underground 5KV primary conductors and approximately 20 medium voltage oil fuse cut-outs. The design also included the replacement of a number of 5KV automatic transfer switches in the existing building electrical vaults. Outage coordination and planning was critical for the operation to insure continuity of operation to the facility.

PROJECT: 5 KV Switchgear Replacement & Distribution Upgrade - Upper Moreland– Hatboro Sewer Authority Treatment Plant
LOCATION: Willow Grove, PA
COMPLETION DATE: December 2001
SERVICES: Electrical Power Systems, Environmental Support Systems

OVERVIEW: System upgrade at the treatment facility

The system upgrade at the treatment facility includes the design of two sets of double ended 15KV switchgear and twelve 15KV underground feeders to provide dual service to each new plant substation. One new building was constructed to house the one of the switchgear lineups and an existing switchgear building renovated. Eight 5KV transformers were replaced with 15KV primary units. The secondary 480/277V switchboards at each location were upgraded to provide higher amperage services to each building and process facility.

Load studies were performed at each plant building to identify the actual demand placed on the system by each particular load. The load data was compiled and integrated with the expected future load growth for each building to determine the proper size transformer to be installed. Each of these load forms were then integrated to represent the complete load profile for each building. The project required detailed planning for all new equipment cutover due to the around the clock operation of this large wastewater treatment facility. Downtime windows where as short four minutes at the most demanding application, the raw sewage pump station.

The system upgrade at the treatment required major construction around the site of a large around the clock municipal waste treatment plant.

The environmental processes at the plant require the utmost in reliability. Protective device coordination studies were performed to insure all relaying and transfer equipment performed as specified.

PROJECT: West Chester University
LOCATION: West Chester, PA
COMPLETION DATE: N/A
SERVICES: Elecrical Power Systems

OVERVIEW: Upgrade of the existing medium voltage power system.

The project involved transformer capacity increases at the existing university owned substation, including the installation of a 15 mva substation class transformer, replacement of existing antiquated 15 kv switchgear line up, and installation of a new 34.5 kv incoming SF6 switch.

Improvements to the underground distribution system included the installation of new 15 kv feeders to the central and east campus areas. Existing facilities served by the existing 5 kv feeders in the Central/East areas of the campus were converted to dual 15 kv services. All new services consisted of installation of a new 15 kv SF6 automatic transfer switch and either a new 15 kv dry type transformer or liquid type pad mounted transformer. Existing facilities converted consisted of five residence halls, performing arts center, parking garage, student union and the library.

In addition, a new underground duct bank was constructed to provided medium voltage power service to the current building projects occurring in the east Campus area.

The project included detailed short circuit calculations and complete protective device coordination for all new 15 kv feeders, utility services and building services.

The project required detailed planning to transfer the existing 34.5 kv utility feeders, and tntegrate the new eight bay outdoor 15 kv switchgear. Construction phasing plans were developed to identify specific tasks for the interim operating period during which portions of the existing system remained energized and new systems were commissioned.

PROJECT: 69 kv - 23 kv, 20 mva Substation for the Pope and Talbot
LOCATION: Ransom, PA
COMPLETION DATE: December 2001
SERVICES: Electrical Power Systems

OVERVIEW: Design of a new customer owned 69 kv substation at the client’s manufacturing site.

The work included the siting of the new substation in a congested area adjacent to the clients papermill and wastewater treatment plant.

The scope of the project included the design of dual 69 kv steel poles with davit arm construction. Each incoming 69 kv circuit was dead ended to a structural tower and routed through a
69 kv air break switch. The load break switches where connected via a tension bus to 69 kv transformer primary fuses.

The substation class transformers where rated 10/20 mva. The transformer secondaries utilized aerial cable to metering PT’s and CT’s mounted on structural towers.

The 23 kv outgoing facility consisted of structural members supporting post type insulators and aluminum busbar operating 23 kv . The 23 kv busses consisted of operating and transfer buses. Each 23 kv 1200 A circuit breaker was equipped with no load disconnects to facilitate removal of circuit breakers for maintenance.

The project required reconfiguration of the existing 23 kv aerial distribution system to accomadate the abandonment of the existing utility 23 kv feeders and the integration of the new substation.

The papermaking operations at the plant require the utmost in reliability and required a detailed phasing plan for construction and outage requirements. Protective device coordination studies were performed to insure all relaying and transfer.