Traction Power Supply System

Traction Power Supply System

TECHNICAL CHARACTERISTICS:

A. MEDIUM VOLTAGE (MV) POWER
Source Public Power Corporation (PPC)
Power Supply Voltage 20 kV, 3Φ, 50Hz
Power Supply Points 30
Power Distribution 70 mm2, copper cable
Β. DIRECT CURRENT (DC) RECTIFIER SUBSTATIONS
Rectifier types 12-pulse rectifiers with silicon diodes
Number of substations 10 (Line2)
10 (Line 3)
2 (Depot)
22 in Total
Average spacing 1100m (Line 2)
1200m (Line 3)
Power 3 MW
Overloading capacity 150%, 2 h
300%, 1 min
Output voltage (nominal) 750 VDC
C. DC POWER DISTRIBUTION
Third Rail 60 Kg/m, low carbon content steel
17.3 Kg/m, Composite (Aluminum / Stainless Steel)
Nominal voltage 750 VDC
Minimum voltage 525 VDC
Maximum voltage 900 VDC
D. OTHER CHARACTERISTICS
Capacity design 6-car Trains, 100s Headway
Sectionalization The entire third rail of the Main Lines:
•   Line 2 – 18 sections
•   Line 3 – 14 sections
Monitoring & Control Remote Control (Syntagma)
Local Control
Emergency plungers every 200m
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