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Transformers

ransm ss on nes

Transformers Cables

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Transformers

ransm ss on nes

Transformers Cables

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Distribution Power

witching Devices

rotect on Non-Power

easur ng

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Power

ev ces

Substation Non-Power

Devices

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Voltage

R S TVoltage

Space

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IEC 60947-1

2.1.2general term covering switching devices and theircom ination wit associate contro , measuring,protective and regulating equipment, also

assemblies of such devices and e ui ment withassociated interconnections, accessories,enclosures and supporting structures,

generation, transmission, distribution andconversion of electric energy.

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Switch ear

I I

switching devices ,control, measuring,

protective and regulating equipment, alsoassem es o suc ev ces an equ pmen w

associated interconnections, accessories,enclosures and supporting structures

O O O O O O

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Bus

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Network Structures:No#1

1 busbar, 1 supply source

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Network Structures:

No#2

-

2- NO/NC

,

2 or more supply sources

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GG GG GG

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Network Structures:

o

,

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Network Structures:

DGDG

3 busbar with 2 couplers, 3 supply sources

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33/6.4kVS=20MVA DGDG

33/6.4kVS=20MVA

6kVS=2MVA

6kV 6kV 6kV

EmergencyLoads

NormalLoads

NormalLoads

Normal Condition

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33/6.4kVS=20MVA DGDG

33/6.4kVS=20MVA

6kVS=2MVA

6kV 6kV 6kV

EmergencyLoads

NormalLoads

NormalLoads

Emergency Condition

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Network Structures:

No#5

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Power

Grid

Power

Grid

6kV6kV

DGDG

0.4kV0.4kV0.4kV

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based on Insulation

R S T

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R S T

AIS:Air Insulated Substation

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substation in 1967, and is the market and,

installations and innovations than any other

.

or s arges gas nsu a eswitchgear installation, at Three Gorges

am n na: - , ays,

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xpenses

Installation

Maintenance

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Medium Voltage

High Voltage

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MCC: Motor Control Center

Distribution Panel

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Low Voltage: MCC

0.4kV 0.4kV

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. .

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Low Voltage: MCC

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MCC: Cell Types

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1. Incoming 4. Motor Feeders

2. Buscoupler 5. Capacitor Bank

3. Riser 6. C.B Feeders