Download HV Equipment File 4 of 5 PDF

TitleHV Equipment File 4 of 5
TagsElectric Current Voltage Insulator (Electricity) Electric Arc Nozzle
File Size1.3 MB
Total Pages26
Table of Contents
                            High voltage equipment
Transformer Outline (Courtesy of Mitsubishi)

Winding arrangement




Dehydrating Beather (Courtesy of Mitsubishi power transformer)

4. BUSHING INSULATOR
5. Tap Changing Equipment



Rating Data


Current Transformer (ANSI Std. C57.13)
CT classification
Bottom Core or Tank Type CT (36-300KV, 50-2000A)
Top Core or Inverted Type CT (145-525KV, 40-6000A)

Symbol,  Polarity and Ratio
CT  Ratings



Metering CT


CT  Error  (ANSI/IEEE Std. C57.13)Measuring Cores   Classes:  0.3 - 0.6 - 1.2

Protection Cores

Voltage Transformer (ANSI/IEEE Std 57.13)
Voltage Transformer
VT with closed iron core and layer winding
VT with bar - type core and coil winding
Coupling Capacitor Voltage Transformer (CCVT)
Diagram of the capacitor voltage transformer

Rating and Specifications


Disconnecting Switch (ANSI Std. C37.30 to C37.35)
Type of Disconnecting Switch






POWER CIRCUIT BREAKER (ANSI Std. C37.06)


Circuit breaker type
SINGLE PRESSURE PUFFER TYPE INTERRUPTER
Phase 1.  Opening of main contact
Phase 2.  Current commutation to arcing contact
Phase 3.  Arcing contact opening
Phase 4.  Arcing phenomena
Phase 5.  High current phase
Phase 6.  Extinguishing phase
Phase 7.  End phase
Closing operation
Interrupting chamber design
CB TECHNICAL DATA




Current interruption

Operating mechanism
Surge Arrester (ANSI Std. C62.11)
Introduction
Function
Construction & Parts(Courtesy of Gec Alstrom)
Operation

MO Surge Arrester

Dimensioning and Rating
Review of travelling wave
Accessories
                        

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