Embed Size (px)
Citation preview
Main Distribution Boards
MDB’s
Instructor : Eng. Wael Younis
Main Distribution Board (MDB) For Residential Buildings (للمباني السكنية)
Single Line Power Diagram
1. MDB for Single Floor Buildings (Single Phase)
MDB inside view
1. MDB for Single Floor Buildings
MDB outside view
1. MDB for Single Floor Buildings
Kilowatt hour meters (KWHM)
KWHM Single Line Diagram
Kilowatt hour meters (KWHM)
Main Distribution Board MDB
KWHM Direct Connection Diagram
Single Line Power Diagram
2. MDB for Single Floor Buildings (Three Phase)
MDB Inside View
2. MDB for Single Floor Buildings (Three Phase)
MDB Outside View
2. MDB for Single Floor Buildings (Three Phase)
Single Line Power Diagram
3. MDB for Multi Floor Buildings (5 Flats)
MDB Inside View
3. MDB for Multi Floor Buildings (5 Flats)
MDB Outside View
3. MDB for Multi Floor Buildings (5 Flats)
3. MDB for Multi Floor Buildings (10 Flats)
Single Line Power Diagram
MDB Inside View
3. MDB for Multi Floor Buildings (10 Flats)
MDB Outside View
3. MDB for Multi Floor Buildings (10 Flats)
4. MDB for Towers (22 Flats)
Single Line Power Diagram
MDB Inside View
4. MDB for Towers (22 Flats)
MDB Outside View
4. MDB for Towers (22 Flats)
5. MDB for Towers (36 Flats)
Single Line Power Diagram
MDB Inside View
5. MDB for Towers (36 Flats)
MDB Outside View
5. MDB for Towers (36 Flats)
6. MDB for Towers (48 Flats)
Single Line Power Diagram
MDB Inside View
6. MDB for Towers (48 Flats)
MDB Outside View
6. MDB for Towers (48 Flats)
Main Distribution Board (MDB) For Industrial Buildings
Single Line Power Diagram
1. MDB for Industrial Buildings (3x32A, 3x63A)
MDB inside view
1. MDB for Industrial Buildings (3x32A, 3x63A)
MDB outside view
1. MDB for Industrial Buildings (3x32A, 3x63A)
Single Line Power Diagram
2. MDB for Industrial Buildings (3x100A-3x400A)
MDB Inside View
2. MDB for Industrial Buildings (3x100A-3x400A)
MDB Outside View
2. MDB for Industrial Buildings (3x100A-3x400A)
Main Distribution BoardMDB
Main Circuit Breaker (A)
Percent Voltage Drop
Selected Main Cable Size (mm2)
Total Current (A)
223.0Total Demand Load With (25%) Spare Load
44.6(25%) Spare Load
178.4Total Demand Load
0.80Diversity Factor
223.0Total Connected Load
21.0Fourth FloorDB-11
30.0Third FloorDB-10
22.0Third FloorDB-9
23.0Third FloorDB-8
17.0Third FloorDB-7
15.0Third FloorDB-6
30.0Second FloorDB-5
25.0Second FloorDB-4
20.0Second FloorDB-3
11.0Ground FloorDB-2
9.0Ground FloorDB-1
LO
AD
S (Connected to M
DB
)
Connected Load (KW)Distribution Board
Load Estimation sheet
Main Distribution BoardMDB
