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Alduti-Rupter Switches

Alduti-Rupter® Switches

S&C Alduti-Rupter Switches provide no-external-arc circuit interruption for overhead distribution feeders and outdoor distribution substations; they are ideally suited for the following switching duties:

  • Line switching
  • Transformer switching
  • Cable switching.

Alduti-Rupter Switches are available in voltage ratings through 69 kV, in seven rugged group-operated, three-pole styles. They can be tailored to suit any configuration and mount on any structure. Alduti-Rupter Switches are offered in ratings of 600 through 2400 amperes continuous and 1600 amperes interrupting.

Features

For your heavy-duty station and feeder applications — thru 69 kV

  • Adaptable to any station structure with broad choice of standard and custom mounting arrangements
  • Live switching through 1600 A simplifies switching procedures . . . saves time, reduces errors
  • Unmatched performance for 38-kV and 48-kV feeders with ultra-smooth single- or double-break interruption . . . plus duty-cycle fault closing
  • Proven through full-scale testing in the laboratory and the field . . . at maximum voltages, currents, and TRVs
  • Available with power operation for distribution automation or source transfer . . . with S&C’s high-speed operators matched to Alduti-Rupter and the application

For applications where there is no need for simultaneous three-phase switching, single-pole Alduti-Rupter Switches are an excellent alternative; they’re conveniently operated with a conventional hookstick.

Because Alduti-Rupter Switches can switch loaded or unloaded lines, transformers, and cables, they are ideally suited for remote supervisory control or fully automatic operation when equipped with an S&C Switch Operator–Type AS-1A (for switches with rotating operating mechanisms) or Type AS-10 (for switches with reciprocating operating mechanisms).

Ratings

 

Three-Pole Side-Break Integer Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
14.4 17.0 110 600 40 000
25 27 150 600 40 000
25/34.5 38 150 600 40 000
34.5 38 200 600 40 000

 

Three-Pole Vertical-Break Integer Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
34.5 38 200 600 40 000
34.5 38 200 1200 40 000

 

Three-Pole Double-Break Integer Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
46 48.3 250 600 40 000

 

Three-Pole Side-Break Heavy-Duty Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
14.4 17.0 110 600 40 000
25 27 150 600 40 000
34.5 38 200 600 40 000

 

Three-Pole Vertical-Break Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
14.4 17.0 110 600 40 000
14.4 17.0 110 1200 61 000
14.4 17.0 110 2400 / 1600 40 000
25 27 150 600 40 000
25/34.5 38 150 1200 40 000
34.5 38 200 600 40 000
34.5 38 200 1200 40 000

 

Three-Pole Double-Break Style (Group Operated)
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
34.5 38 200 600 40 000
46 48.3 250 600 40 000
69 72.5 350 1200 / 600 40 000

 

Single-Pole Heavy-Duty Style
50/60-Hz Ratings
kV Amperes, RMS
Nom. Max BIL Continuous and Interrupting Momentary, Asymmetrical
14.4 17.0 110 600 40 000
14.4 17.0 110 1200 61 000
25 27 150 600 40 000
25 27 150 1200 61 000

Options

A variety of optional features are available for Alduti-Rupter Switches:

  • Mounting provisions for surge arresters
  • Ice shields
  • Dead-ending provisions
  • Extension-link assemblies
  • Fiberglass insulating section in vertical operating shaft
  • Cypoxy® insulator in vertical operating shaft
  • Insulated interphase sections
  • Key interlocks

Switch Operators

AS-1A Switch Operator

AS-1A and AS-10 Switch Operators

Types AS-1A and AS-10 Switch Operators are high-speed operators expressly designed for power operation of S&C Alduti-Rupter Switches.

  • Type AS-1A Switch Operators are intended for use with S&C Alduti-Rupter Switches with rotating-type operating mechanisms and have a maximum operating time of .75 second.
  • Type AS-10 Switch Operators are intended for use with S&C Alduti-Rupter Switches with reciprocating-type operating mechanisms and have a maximum operating time of 1.2 seconds. This high operating speed provides sufficient moving-contact velocity in the Alduti-Rupter Switch interrupters to ensure full interrupting capability and long operating life.

The operators’ high operating speed also provides adequate closing velocity for 25/34.5-kv and 34.5 kv Three-Pole Side-Break Integer Style and Three-Pole Vertical-Break Integer Style switches such that the Side-Break Integer Style switches have a one-time duty-cycle fault-closing rating of 15,000 amperes rms asymmetrical, and the Vertical-Break Integer Style switches have one-time duty-cycle fault-closing ratings of 20,000 or 30,000 amperes rms asymmetrical for switches rated 600 amperes or 1200 amperes, respectively.

Type AS-1A and Type AS-10 Switch Operators may be furnished with optional source-transfer control compatibility. This accessory permits use of the switch operator — along with a second switch operator and an S&C Type AT-2 Source-Transfer Control in weatherproof enclosure — to provide automatic source transfer for primary-selective overhead distribution systems.

 

 

M Series Switch Operator

M Series® Switch Operator

S&C’s M Series Switch Operators are fully integrated, microprocessor-based controls that let you automate almost any distribution-class switch. By combining and testing the electromechanical components, RTU, control, and communications as a single package, we also added intelligence, increased reliability, and reduced costs.

The M Series operator monitors the switching cycle and can automatically take corrective action in the event of stuck, frozen, or welded contacts. This protects your equipment from partial operations.

With the optional radio faulted circuit indicators, the switch operator can also isolate faults without the need for expensive line post current sensors. Sectionalizing is based on voltage loss (with or without prior fault).

When equipped with the optional voltage and current sensing option, M Series Switch Operators provide true RMS voltage and current readings plus fault detection, as well as automatic sectionalizing and loss of phase capabilities.

Key features of the M Series Switch Operator include:

  • Fully integrates electromechanical components, RTU, control, and communications as a single package
  • Works with most distribution-class switches including S&C Alduti-Rupter® and Omni-Rupter®
  • Automates retrofitted or new installations
  • Provides torsional or reciprocating operation
  • Protects switches from partial open or close operations
  • Uses microprocessor control for all functions
  • Field-proven single power supply/battery system
  • Fast, easy, and precise setup with the IntelliLink® Setup Software
  • Full range of safety features
  • Emergency override commands
  • Loss of voltage operation
  • True RMS voltage and current sensing option
  • Radio faulted circuit indicator option
  • Dependable, cost-effective solution for remote switching.

Mounting Styles

A variety of mounting configurations are available, tailored to the most popular overhead-distribution line designs.

Refer to S&C Publication 761-80 for standard mounting arrangements.