Omni-Rupter® Switches
Omni-Rupters provide long-life, high performance, no-external-arc circuit interruption, and are ideally suited for the following switching duties:
- Line switching . . . including sectionalizing and feeder switching
- Transformer switching
- Cable switching.
Omni-Rupter Switches are rated 900 amperes continuous and interrupting in voltage ratings of 14.4kV and 25kV. These gang-operated interrupter switches are available in a number of mounting configurations to accommodate a wide variety of line configurations encountered on today’s distribution systems.
Features
Redesigned for 2011, Omni-Rupter Switches have a two-time duty cycle fault closing capability of 42,000 amperes peak, and a ten-time duty cycle fault closing capability of 21,000 amperes peak and have an increased peak withstand rating of 65,000 amperes.
The new-design interrupters feature an operating cam and shunt arm arrangement with an internal latch and spring mechanism that provides a consistent operating speed for the interrupters independent of the speed of the operating mechanism.
New articulating terminal pads have been added to the Omni-Rupter to allow more flexibility when connecting jumpers. They reduce loading stress on the blades while minimizing operating friction and blade mis-alignment caused by overloaded terminal pads.
Omni-Rupter Switches are available with either a ground-level manual operating handle or with a vandal-resistant hookstick operating handle. All interrupter switches are factory adjusted and tested for close three-pole interphase interrupting simultaneity. Omni-Rupters are available with a choice of fiberglass bases and fiberglass interphase operating rods…and of Cypoxy®, porcelain or silicone insulators. Some configurations are available with wildlife protection.
For more information on the recent Omni-Rupter Switch re-design, check out Photo Sheet 765-710.
Ratings
| kV | Amperes | Fault Closing Capability, Amperes Peak |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal | Maximum | BIL | Continuous |
Interrupting |
Peak | One-Second, RMS Sym. |
Three-Second, RMS Sym. |
Two-Time Duty Cycle |
Ten-Time Duty Cycle |
| 14.4 | 17.0 | 110 | 900 | 900 | 65 000 | 25 000 | 20 000 | 42 000 | 21 000 |
| 25 | 29 | 150 | 900 | 900 | 65 000 | 25 000 | 20 000 | 42 000 | 21 000 |
Ratings apply to Omni-Rupter Switches with catalog number revision "R4." For ratings for previous versions of the Omni-Rupter Switch, please contact your nearest S&C Sales office.
Line and Cable Dropping interrupting ratings are dependant on the length of line. Contact your nearest S&C Sales office for details.
Options
A variety of optional features are available for Omni-Rupter Switches:
Factory-Adjusted Hookstick Operating Mechanism
- Operable from the ground using an “extendo” hot-stick. Reflectors included to provide enhanced visibility at night and during inclement weather.
- No vandal-tempting operating handle to install, or grounding mat
- Cuts switch installation time by up to 60%
- Redesigned “U” Shaped hookstick pull rings provide a larger landing area for the hookstick, allowing operation from all angles . . . even directly behind the switch
- Padlock hasp incorporated into hookstick handle. Improving visibility by placing the lockout front and center on the switch
- No field adjustment needed, ever.
Wildlife Protection
- Retrofittable to all installed Omni-Rupter Switches in the upright mounting style.
- Unique “snap-fit” design of the discs allows the protection system to be installed on a de-energized switch on the pole. No tools are required. And no disassembly of the switch parts is needed.
- Prevents animals from making phase-to-grounded part contact.
Hookstick with Hookstick Lockout/Tagout
Hookstick-operated Omni-Rupter Switches (mounting configurations) are available with a hookstick-operated lockout/tagout device. This device locks the switch in the open position with a single-pull of the hookstick. Padlockable.
Also Available:
- Insulating section in the vertical shaft
- Mounting provisions for surge arresters
- Dead-ending extension-link assemblies
- Ice shields
Switch Operators
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
S&C Omni-Rupter Switches are expressly designed for overhead feeder switching and for use in sectionalization schemes. These interrupter switches are available in four mounting configurations to accommodate the variety of line constructions encountered on today’s distribution systems:
Upright Mounting Configuration
Switches in the popular upright mounting configuration are suitable for horizontal distribution-feeder line configurations and they are available with extra mounting pole clearance. Upright Omni-Rupter Switcher use a rotating-type manual operating handle. To guard against animal related outages, upright interrupter switches are also available with optional wildlife protection. Other options include the hookstick operating mechanism and surge arrester mounting brackets. Upright Omni-Rupter switches can be specified with either a steel or fiberglass base.
Vertical Mounting Configuration
Switches in the vertical mounting configuration are ideally suited for use at cable risers and transformer tapoffs from overhead lines. Vertical Omni-Rupter Switcher use a reciprocating-type manual operating handle to open and close the switch-and can be provided with the hookstick operating mechanism. Upright switches are available with optional surge arrester mounting brackets and can be specified with either a steel or fiberglass base.
Tiered-Outboard Mounting Configuration
Switches in the tiered-outboard mounting configuration are designed for vertical (phase-over-phase) distribution-feeder line configurations. Tiered-outboard (Phase-over-phase) Omni-Rupter Switcher use a reciprocating-type manual operating handle to open and close the switch-and can be provided with the hookstick operating mechanism. Tiered-outboard switches are available with optional surge arrester mounting brackets and can be specified with either a steel or fiberglass base.
Triangular Mounting Configuration
Switches in the triangular mounting configuration are tailored for use on systems having pole-top or triangular distribution-feeder line configurations. Triangular Omni-Rupter Switches use a rotating-type manual operating handle to open and close the switch.
All Omni-Rupter Switches are available with a choice of either Cypoxy® or Porcelain insulators and can be supplied with a wide variety of options-including voltage and current sensors, insulated bases, insulated operating rods, surge arrester mounting brackets and wildlife protection. (Switches shown feature steel bases and Cypoxy insulators.)
For a full list of options, see S&C Specification Bulletin 765-31.