Date: May 10, 2016
To: Con Edison
From: Mohammed Rahman
Subject: LIRR Morris Park Locomotive Shop And Employee Welfare Facility
Long Island Rail Road (LIRR) has retained the services of Jacobs to design the new Locomotive Shop at their Morris Park Facility in Richmond Hill, Queens. The new Locomotive Shop will also serve as an Employee Welfare Facility.
There are four existing Con-Edison transformers located outside of the existing Electrical Service Building. The transformers are connected to four utility switchgears inside the Electrical Service Building via Fused Network Protectors. The utility switchgears feed various buildings and yard loads throughout the Morris Park Facility. The existing distribution system does not have adequate spare capacity to provide electrical service to the new Locomotive Shop.
The electrical service to the new Locomotive Shop will be fed from a new 480Y/277V, 3Phase, 4 Wire and 4000Amp utility switchgear to be installed inside LIRR’s existing Electrical Service Building (located near the corner of 89Th avenue and 121st Street). The design intent is to feed the new utility switchgear from a new Con-Edison 27kV-480V/277V transformer via new Fused Network Protector (See one-line for details). The Con-Edison transformer is to be installed in the spare open vault located on the north wall of the building.
Existing Con Spare Con Edison Edison Transformers Transformer 89th Ave (In outdoor Vault vaults) Existing Service Building
121St Street
Proposed location of Locomotive Shop
Existing Service Building
Figure 1 Figure 2 Based on our demand load calculations for the Locomotive Shop, we are requesting a 2500 KVA transformer with a 480Y/277V secondary. Below is the breakdown of our loads:
SERVICE SIZING Connected Demand Load Load (KVA) (KVA) Lighting Loads 39.00 39.00 Receptacle Loads 356.33 183.17 Continuous Loads 42.62 53.27 Non Continuous Loads 824.76 824.76 Motor Loads 768.20 230.46 Heat Loads 412.75 412.75 Largest Motor Load 0.00 51.94
TOTAL (KVA) 2443.66 1795.34 TOTAL (Amps) 2940.62 2160.46
Future Expansion (20% Spare of Demand KVA) 359.07
TOTAL SERVICE SIZE (KVA) 2154.41
We are looking to coordinate with Con-Edison in locating a property line manhole along 89th avenue for primary feed to the Utility Transformer. Let us know if further information is required and we will promptly respond.
Best Regards,
Mohammed Rahman
Lead Electrical Engineer
Jacobs
212-760-8712
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