Suspended Bridge Lighting, China

Bridges Lighting
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Project feautures

  • TOTAL POWER: 1600 kVA
  • TRANSPORT VOLTAGE: 5500 V
  • NETWORK DISTANCE: 15.6 KM
  • LOCATION: Hong Kong, China
  • YEAR: 1995-1996

PROJECT OBJECTIVES

Power supply for lighting of the longest (15.6 km) cable-suspension bridge in China.

Power supply of video cameras and message panels for river navigation support.

CUSTOMER NEEDS

No energy source available on bridge.

Civil works total length : 15.6 km, 4.8 km on the river.

CUSTOMER NAME 

PLUS

OUR SOLUTIONS IMPLEMENTED

After a technical audit and taking into account the needs and imperatives, we proposed the establishment of:

 

  • DISTRIBUTE ELECTRICITY IN 5.5 KV FROM A SUBSTATION EQUIPPED WITH 2 TRANSFORMERS
    – 1.6 MVA and 10 kV/5.5 kV.
  • THE SWITCHBOARD, WITH 6 FEEDER CONTACTORS
    Supplies the watertight step-down transformers installed in pits, close to the lamps.
  • POWER SUPPLY OF TRANSFORMERS WITH 5.5 KV 3C X 25 MM² CABLE
    The whole installation can be supplied from one of the two transformers.

MATERIAL USED

– A 5500V switchboard containing two isolating switches, one bus coupler and six feeder contactors 5500 V,
– 32 transformers TED TTT 16 kVA 5500 V / 400 V,
– 4 transformers TEH TTT 50 kVA 5500 V / 400 V,
– 8 transformers TEH TTT 100 kVA 5500 V / 400 V.

CUSTOMER BENEFITS

BURIED SOLUTION, NO AIRLINE

LOW VOLTAGE DROP

EASY PLUG IN/OUT SOLUTION FOR AN EXTENDABLE NETWORK