Three-phase enclosure SF6-GIS (72.5-170kV)

Ratings Specification :

Ratings (Based on IEC 517)

  Rated voltage (kV)
72.5 100 123 145 170
Insulation level (kV)
Lightning impulse withstand voltage
Power frequency withstand voltage
325 450 550 650 750
140 185 230 275 325
Circuit Breaker
Type
Rated current (A)
Rated short-time current (kA)
Rated interrupting current (kA)
Rated interrupting time (cycles)
Operating mechanism
Single-pressure puffer
1250/2000/3150
25/31.5/40
25/31.5/40
3/5
Spring or pneumatic
Disconnector (isolator)1
Type
Rated current (A)
Rated short-time current (kA)
Operating mechanism
Linear Break
1250/2000/3150
25/31.5/40
Manual, motor or pnumatic
Earthing (grounding switch)
Type
Rated short-time current (kA)
Operating mechanism
Linear Break
25/31.5/40
Manual, motor-charged spring, or pneumatic
Voltage (potential)1 transformer
Type
Rated primary voltage (kV)
Rated secondary voltage (V)
Wound
72.5/Ö3 100/Ö3 123/Ö3 145/Ö3 170/Ö3
110/Ö3 | 115/Ö3 | 120/Ö3 | 200/Ö3
Current transformer
Type
Rated primary current (A)
Rated secondary current (A)
Troidal (ring) core
600/750/1000/1250/1500/2000/2500/3000
1/5
Surge arrester
Type
Rated voltage (kV)2
Rated discharge current (kA)
Metal Oxide (MOA)
60/84 84/102 96/126 120/150 144/186
10
Busbar
Enclosure
Rated current (A)
Rated short-time current (kA)
Three-phase
1250/2000/3150
25/31.5/40

Notes :

  1. Words in parentheses are Mitsubishi Eletric's standard nomenclature, which is used here.
  2. The surge arrester rated voltage should be determined in accordance with the system insulation design.

 

Ratings (Based on ANSI Standard)

  Rated voltage (kV)
72.5 121 145 169
Insulation level (kV)
Lightning impulse withstand voltage
Power frequency withstand voltage
325 450 650 750
160 260 310 365
Circuit Breaker
Type
Rated current (A)
Rated short-time current (kA)
Rated interrupting current (kA)
Rated interrupting time (cycles)
Operating mechanism
Single-pressure puffer
1200/1600/2000/3000
20/31.5/40
20/31.5/40
3/5
Spring or pneumatic
Disconnecting switch
Type
Rated current (A)
Rated short-time current (kA)
Operating mechanism
Linear Break
1200/1600/2000/3000
20/31.5/40
Manual, motor or pnumatic
Ground switch
Type
Rated short-time current (kA)
Operating mechanism
Linear Break
25/31.5/40
Manual, motor-charged spring, or pneumatic
Busbar
Enclosure
Rated current (A)
Rated short-time current (kA)
Three-phase
1200/1600/2000/3000
20/31.5/40
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