Autoself(TM) Time Voltage Sectionalizer TVS is built of the OVX’s high performance outdoor vacuum circuit breaker module and high speed TVX electronic sectionalizer module. The AutoSelf functionality is built on a auto-reclosing cycle count, lockout function and simple time‐voltage logic including multiple timers. It can be operated manually via push buttons and a rotate switch.

Hughes Power System Time Voltage Sectionalizer
  • Non-enclosed switch for extra safety
  • Integrated air break switch for personal safety
  • Operation On and Off with full load without electric power
  • Follows the feeding substations reclosing sequence
  • Easy installation
  • Frame of "Marine grade" premium stainless steel


Hughes Power System Time Voltage Sectionalizer


Description TVS240 TVS240
Rated maximum voltage 24 kV 28 kV
Rated basic impulse level, P>P 145 kV 145 kV
Rated basic impulse level, P>E 125 kV 125 kV
Power frequency withstand, Dry 60 kV 60 kV
Power frequency withstand, Wet 50 kV 50 kV
Description 24 kV 24 kV
Rated continuous current 630 A 1250 A
Rated fault making current 50 kA 50 kA
Rated fault breaking current 20 kA 25 kA
Cable charging current 20 A 40 A
Line charging current 5 A 10 A
Rated fault duration time 3 s 3 s
Contact resistance, VCB < 35 µΩ < 35 µΩ
Contact resistance,ABI < 65 µΩ < 65 µΩ
Network frequency 50/60 Hz 50/60 Hz
Design min mechanical/electrical 20.000 20.000
Mass (weight) without air break switch - kg  101  101
Mass (weight) with air break switch - kg  125 125
Ambient temperature C (F) -45 - +70 -45 - +70
Humidity 100% at 25 C 100% at 25 C
Bushing type Epoxy core with silicone surface
Creep distance to group (airbreak switch isolator) 800 mm 800 mm
Creep distance to group (interruptor isolator) 1250 mm 1250 mm
Max installation altitude at rated BIL 3000 m 3000 m
Rated operation voltage 24-48-110VDC
Rated power 40 W 40 W
Design specification IEC 62271-100
Marking specification IEEE std C37.60
Operation sequence, no charge 25 ms trip - 50 ms close - 25 ms trip

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