Square D Digest 179

Medium Voltage Switchgear

Gas-Insulated Ring Main Units for Secondary Distribution Systems Class 6047 / Refer to Brochure 6000BR1202

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DVCAS Switchgear DVCAS medium voltage (MV) switchgear from Schneider Electric is designed to meet the electrical switching, protection, and connection needs of wind farm applications up to 38 kV. Three different modules are available: • Transformer protection module D For standard wind power applications, a maximum of four modules can be connected in various configurations to provide the most commonly used wind power functions. DVCAS switchgear is designed, manufactured, and tested in accordance with the following standards: • C37.20.3-9 • C37.54 • CAN/CSA C22.2 No.31-M89 • ULListed • IEEE Cable Bushings • Outgoing line module O • Incoming line module I

O

I

D

VIP

11 SWITCHBOARDS AND SWITCHGEAR

Typical IDO Configuration

Transformer Protection Module D

DVCAS switchgear module D provides transformer protection. Construction features include: • Metal base frame • Operating mechanism and relay compartment – disconnector operating mechanism – operating mechanism of the circuit breaker – protection relay VIP, Sepam, or Micom – zero sequence current transformer CSH 30 • MV cable compartment – bushings for cable connection – Three CRc current sensors per phase • Stainless steel, gas-tight tank – busbar system – three position disconnector – circuit breaker

LE - DO

VIP

YO 1

Mitop

CSH 30

ModuleD

11-38

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