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Assumption University Thailand EE4503 Electrical Systems Design Load Calculation 1.

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Presentation on theme: "Assumption University Thailand EE4503 Electrical Systems Design Load Calculation 1."— Presentation transcript:

1 Assumption University Thailand EE4503 Electrical Systems Design Load Calculation 1

2 Assumption University Thailand Topics Load Calculation (E.I.T.) Load Calculation by Adding Branch Circuit Load Calculation for condominium Load Estimation 2

3 Assumption University Thailand Load Calculation (E.I.T.) lighting 3 BuildingLighting (VA)Demand Factor (%) Residential Area  2,000 > 2, Hospital  50,000 > 50, Hotel, Condominium  20,000 20,001 – 100,000 > 100, Warehouse  12,500 > 12, Other100

4 Assumption University Thailand Load Calculation (E.I.T.) receptacles 4 Total Load from Receptacle Demand Factor (%) Non residential area  10kVA 100 > 10kVA50 Residential area

5 Assumption University Thailand Load Calculation (E.I.T.) Demand Factor of Appliances 5 BuildingLighting (VA)Demand Factor (%) Residential Area Kitchen Hot Water Air Condition 10A+30% of extra first two + 25% of other 100 Office, StoreKitchen Hot Water First maximum device + 80% of the second max. + 60% of the rest 100% of the largest + 25% of the rest Hotel, OtherKitchen Hot Water Air Condition Same as Office 75

6 Assumption University Thailand Load Calculation by Adding Branch Circuit Add of all branch circuit Then multiply by the demand factor 6 Number of PanelsDemand Factor (%) >

7 Assumption University Thailand Load Calculation for Condominium Load: common area + individual room 7 TypeNumber of RoomsCoincident Factor (%) Residential > Non residential1-10 >

8 Assumption University Thailand Load Estimation Quick estimate of the load Many common tables, just refer to one 8

9 Assumption University Thailand Load Estimation 9

10 Assumption University Thailand Load Estimation 10

11 Assumption University Thailand Load Estimation (E.I.T.) lighting 11 TypeVA/m 2 School25 Computer Center, Meeting Room, Kitchen20 Walk way, Balcony8 Cafeteria18 Hospital – Operation Room100 Hospital – Patient Room14 Office, Shopping Store30 Drawing Room60 Laboratory50

12 Assumption University Thailand Load Estimation (E.I.T.) receptacles 12 TypeVA/m 2 Auditorium, Cafeteria, Church, Sport Complex 2 Drawing Room7 Hospital10 Machine Room15 Office10 School7

13 Assumption University Thailand Load Estimation (E.I.T.) air condition 13 TypeVA/m 2 Bank80 Department Store50 Hospital70 Office70 Grocery Store90 Cafeteria90

14 Assumption University Thailand Electrical Systems Design: ประสิทธิ์ พิทยพัฒน์ Reference 14


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