Server and TR - Electrical Load Estimation.pdf
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- Attached to
- C1DZ--621-24-701 EHRM Infrastructure Upgrades Tier 3 Data Center Construction - Mountain Home VAMC
- Solicitation number
- 36C77626B0006
About this file
This is an electrical load estimation document for a VA infrastructure upgrade project. The submittal provides detailed power consumption calculations for the EHRM Infrastructure Upgrades - Tier 3 facility located in Mountain Home, Tennessee (VA Project Number 621-24-701).
The server room electrical load analysis indicates a total estimated UPS load of 72,249 watts (72.249 kW), with a recommended UPS size of 90 kW at 85% design capacity. Primary equipment loads include 19 server cabinets (41,895 W demand load at 63% demand factor), 6 MDA network cabinets (13,230 W), 4 HDA network cabinets (7,056 W), and miscellaneous telecom equipment (3,500 W), with a 10% future growth allowance of 6,568.1 watts incorporated into the total. The NEC demand load calculation for the server room MCR totals 158 kW, comprising receptacle/plug loads (3,060 VA across 17 outlets), lighting (893 VA across 21 fixtures), miscellaneous loads (5,000 VA), and HVAC (76,800 VA). The total estimated MCR load is 439 amperes, calculated for a 208V, 3-phase distribution system. Demand factors used in calculations were deduced from Spur Design historical and metering data, with most IT equipment calculated at a 63% demand factor and HVAC, miscellaneous, and telecom equipment estimated at 100% demand.
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Text version
VA PROJECT NUMBER
PROJECT NAME
621-24-701 (2409) EHRM Infrastructure Upgrades - Tier 3 Mountain Home, TN
SUBMITTAL Final Bid Documents SUBJECT Server & TR – Electrical load estimation
Electrical 1
Server Room
Devices/Equipment Quantity Average Estimated Load (W) **Demand Factors Estimated
Demand Load (W)
Modem/Demarc 0 500 100% 0 Server Cabinets 19 3500* 63% 41895 HDA Network Cabinets 4 2800* 63% 7056 MDA Network Cabinets 6 3500* 63% 13230 Misc. Telecom Equip -- 3500 100% 3500 *kW heat load for Generic Small Data MCR as electrical Loads.
**Demand Factors deduced from Spur Design Historical and Metering Data.
Sub total (W) 65681
10% future Growth (W) 6568.1
Total Estimated UPS Load (W) 72249
Total Estimated UPS Size (@85% Design Capacity) 90 kW
Server Room NEC Demand Load (VA)
Load Type Quantity VA Table 220.44 Table 220.42
Receptacle/Plug 17 180 3060 -- Lighting 21 34 -- 893 Miscellaneous1 -- 5,000 5000 --
HVAC1 1 76,800 76800 --
1 Indicate loads estimated at 100% Demand
Total Estimated MCR Load (kVA) 158 kW Total Estimated MCR Load* (A) 439 A
*Estimated for a 208V, 3-phase distribution system
END DIVISION 26
END division 26
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