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Load break switch: switchblade with integral arc-strangler load breaking device for hinge-style mounting. This product includes a stationary core and a spring-loaded sliding sleeve which could quickly cut off the arc produced between the mounting contact and blade during load breaking operation.
Rated voltage: up to 15.5kV
Rated continuous current: up to 200A
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GE's BreakMasterTM metal enclosed load interrupter switches provide dependable, economical load switching and protection for medium voltage circuit applications from 2.4kV through 15kV in 600 or 1200 ampere load interrupting ratings. Used mainly as a primary or secondary disconnect switch for transformers, the variety of configurations in which BreakMaster is available also make it useful for specific distribution needs. It can be inserted as a main or feeder switch in PowerVac switchgear or LimitAmp motor controller lineups. Fault current protection is available using a complete line of current limiting or expulsion fuses.
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Ensto's family of load break switches consists of 3-pole switches with additional poles and accessories: handles, shafts, auxiliary contacts and terminal covers.
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In application of new concept mechanism of bendable type blade structure LG Tri-MEC Air Insulited Load Break Switch (LBS) has been equipped with further advanced technology and in a system switching the circuits when checking, measuring, testing and repairing the instruments. at branch point with 3 phase load break switch designed customer-orientedly and considerably. In particular, a bendable type blade structure is significantly small in operation radius in contrast with existing direct line one and an arc discharge angle at the time of breaking operation is under 50°, thereby reducing the danger of accident by an arc remarkably. And it is suitable for a metal Enclosed, Pad-Mounted Switchgear and Package Substation thanks to higher insulation-resistant power and is equipped with durability, stability and economical efficiency. E2 class mechanical strength based on new standard application.
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Disconnectors and switch-disconnectors vertical break design SBC range
Description
The disconnectors and switch-disconnectors SBC range is visible breaking, vertical break design and principally used in rural distribution networks. They are suitable for horizontal or vertical mounting on metal, concrete or wooden single or double poles.
SBC types have a load breaking head comprising a chamber and fast opening auxiliary blade.
This arrangement combines the high speed action of the auxiliary blade with the cooling and confining effect of the enclosure to restrict the arc and limit the production of gases
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Yaskawa's SF6 load break switches are safer to operate than vacuum and other competitive types because the gas pressure is continuously monitored by a pressure switch and is mechanically and electrically interlocked if pressure is lowered. Highest quality porcelain bushings are used for longer and more reliable insulation performance, thus making the Yaskawa switch ideal for use in hostile and dusty environments such as mines, heavy salt-ridden coastal areas, and dense tropical areas.
Yaskawa furnishes the load break switch in three application configurations.
Pole
Pad
Submersible
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Gerapid high speed DC circuit breakers are single-pole circuit breakers designed for use in high energy, high reliability DC power distribution systems. They are suitable for protection of mains and semiconductors (converters/rectifiers) in railway and industrial applications. Feeder circuit breakers and rectifier circuit breakers are available with operating currents up to 8,000ADC and operating voltages up to 3600VDC. They have a very high interruption capacity combined with a current limiting characteristic.
Innovative materials, superior circuit breaking capacity and outstanding dielectric performance ensure service continuity and protection during adverse system events. The technology and quality of these circuit breakers produce high reliability, extended maintenance intervals and uncomplicated serviceability for all fixed installations
Features and Benefits
- Ratings up to 8000A and 4000 Vdc (3,600 Vdc, ANSI)
- IEC 947-2, EN50123-2, and ANSI C37.14 Certifications
- Solenoid drive (integral control unit, mechanically latched, no auxiliary power required to keep contacts closed)
- Available electrodynamic release for very high speed switching
- Two Stage contact system extends life of main contacts
- Compact, enclosed construction
- Full range of accessories, including up to 10 auxiliary contacts
Applications
- Traction power (light rail transit, tram, subway, maglev, etc.)
- Industrial plant protection (electrolysis plants, iron and steel mills, etc.)
- Mining
- Chemical, petrochemical
- Power generation
- Research/experimental (e.g., physics, particle accelerator protection)
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Application
FEAS Solid State reversing contactors are electronic load relays, whitch be used for fast and loudless switching of three-phase asynchronous motors with be operated in both rotating directions. Because of the contactless operation the live span is nearly unlimited. Robust power semiconductors are implemented and they are schwitching in voltage zero crossover and generate so no additional high frequency noise pulses.
The equipment is integrated into a functional and sturdy case, which makes it insensitive to choke stress and vibrations. Also an application in aggresiv environment is unproblematic.
An installed temperature monitoring, signals an excessively high temperature rise before the equipment protects themselves and disconnects. If the implemented phase monitoring detect the loss of one phase, the start of the motor is retarded and this status is signaled, untill all three lines are present.
Operational principle
The semiconductor operates according to the principle of a zero crossover or a zero voltage switch. After applying the control voltage the power output (load circuit) of the semiconductor relay is opened, once the first zero point of the line voltage is reached. The typical time of response is shorter than the half period duration that means less than 10mS with 50Hz frequency.
Version
Installed and completely potted in an aluminum case for direct mounting on DIN rail.
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