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Overcurrent and Reclosing Relay

Overcurrent and Reclosing Relay
Code Product : SEL-551, SEL-551C
Category : Rờ Le Bảo Vệ (Safety Relay)
Producer : Sel
Stock : 3  cái
Description:
Overcurrent and Reclosing Relay
Specification :

Major Features and Benefits

➤

Phase, ground, and negative-sequence overcurrent protection

➤

US and IEC time-overcurrent curves

➤

Multiple-shot reclosing relay with sequence coordination

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Enhanced SELOGIC® control equations to create traditional or advanced schemes

➤

Local/remote control logic to switch schemes, operate circuit breakers, etc.

➤

Sequential Events Recorder (SER) log and event reports stored in nonvolatile memory

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Hardware options for mounting, terminals, output contacts, and communications

➤

Demand ammetering

➤

Supports ASCII, SEL LMD, and Modbus® RTU protocols

Use the SEL-551/SEL-551C Relay in New and Retrofit Installations:

➤

Utility distribution feeders

➤

Industrial distribution feeders—includes core-balance CT input

➤

Distribution buses, via overcurrent or fast-bus trip scheme

➤

Transformer banks—includes input for a separate neutral current transformer

➤

Capacitors, reactors, circuit breakers, etc.

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Panel-mount relays available
Fields of application :
  • Chế tạo máy
  • Nhựa, Cao su
  • Xử lý nước
  • Hóa chất
  • Dệt, nhuộm
  • Chế biến thực phẩm
  • Thực phẩm & Giải khát
  • Dược & Y tế
  • Điện, Điện công nghiệp
  • Sản xuất điện
  • Gạch men, gốm sứ
  • Ngành Gas, dầu khí
  • Công nghiệp tự động...
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