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This Outdoor high performance disconnectors are manufactured for high currents und difficult environmental conditions. That means high pollution degree up to PD4 and high operating cyles.
Tecnical data up to 38.5 kV, 4000 A, 31.5 kA.
Special field of applications are electic power transformation substations, steel- or mine mills.
All switches can be equipt with manual- or motor actuator, automatical earthing device and auxiliary contacts.
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Outdoor Switch-disconnector FLa15/60
used for vertical and horizontal mounting on wooden or concrete pole
Rated voltage 12, 24, 36 and 38.5 kV
Rated current 400 and 630 A
For decades DRIESCHER - Outdoor switch-disconnector have been used as line sectionalizers in medium voltage overhead line networks and have
proven to be extremely satisfactory based on their reliability and operating safety.
The switch is in compliance with the regulations as per DIN VDE 0670
Part 301.
The arc extinguishing device in its weatherproof housing, operates in accordance with the oil flow principle of the well-established DRIESCHER circuit-breakers and is shunted in the On condition.
The switch frame and the operating shafts mounted in bronze bearings are hot-galvanized. All insulators used in the construction are made of
cycloaliphatic cast resin (Color RAL 8017 brown).
The contacts with flat terminations in accordance with DIN 46206 are made of electrolyte copper and are silver plated.
Even after many years of operation, a spring guarantees a constant
contact pressure as well as easy and satisfactory switching.
The nuts, washers and spring washers of stainless
steel ensure corrosion-free connections even under extreme climate conditions.
Refer brochure 762e and 763e
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Outdoor Disconnecting Switches
Fuse-Bases
Earthing Switches
Single- and three-pole
Rated voltage 12 kV, 24 kV, 36 kV, 38.5 kV
Rated current 400 A, 630 A, 1600 A, 2500 A and 4000
All switchgears mentioned in this list comply with the specifications of VDE 0670 Part 2.
All switchgears are equipped with expoxy resin insulators (colour brown, RAL 8017).
For decades the simple, robust construction proved a success in climatical different regions.
The base frames - a welded work made of sectional steel - and the operating shafts made of bronze are hot-galvanized.
All contacts with flat terminations according to DIN46206 and double disconnecting blades made of electrolytic copper are silver-plated and form loopless current paths.
The fuse holder contacts are designed to the operation of high-voltage, high-breaking capacity fuse-links according to DIN 43625.
Adequate cross-sections and suitable contact pressures result in an easy and troublefree switching even after many years of operation, even under
extreme conditions.
All disconnecting switches and three-pole fuse bases can be delivered with an earthing switch.
Disconnecting can also be equipped with spark quenching horns for disconnecting low currents.
Refer brochure 751e
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DRIESCHER - Outdoor Switch-Disconnector
Type FLa 15/97
• Rated voltage 12 kV, 24 kV, 36 kV and 38.5 kV
• Rated current 400 A and 630 A
• 1-pole and 3-pole design
Contrary to former outdoor load-break switches in which it was common practice for the arc to be extinguished in oil, with the new developed outdoor switch-disconnector FLa 15/97 arc extinction takes place in a vacuum interrupter.
Based on a patented insulating system there is also no liquid or gaseous medium required for the external insulation strength of the vacuum interrupters.
The vacuum quenching device is embedded in a weather-proof insulating housing.
This switchgear is therefore also recommended for special applications (e.g. in water protection areas).
The outdoor switch-disconnector is capable of switching on its rated current as well as its rated short-circuit making current via the main contact system.
The disconnecting process is implemented via the shunt-connected vacuum interrupters, resulting in no external arcing phenomena.
A fully developed eccentric make-and-break mechanism operates the vacuum interrupters and ensures Class M2 with regard to the mechanical strength (corresponds to 5000 mechanical operating cycles).Fefer brochure 766e
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DRIESCHER Indoor Switch-disconnector H 27
• 3-pole
• Rated voltage 12 kV and 24 kV
• Ratec current 630 A
For frontpanel mounting or mounting besiede with or without actuating.
All switches are generally equipped with quick make and quick break operating mechanism.
The switches are designed for normal operating conditions according to DIN VDE 0670, Part 1000, class Minus 5° Indoor.
The peak value of the ambient temperature is 40O C; the average value over 24 hours is 35° C at best.
The values of the insulating power are related to sealevel.
Reduction in insulating capacity at hights up to 1000 m are negligible due to the decreasing insulating capacity of the air.
Refer to brochure 727
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DRIESCHER - Indoor Disconnectors, Fuse Bases, Earthing Switches
• Rated voltages Ur
12 kV, 24 kV, 36 kV and 38,5 kV
• Rated currents Ir
630 A, 1600 A, 2500 A, 4000 A and 6300 A
The 1-, 2- and 3-pole Disconnectors ITr are applicable for a rated voltage range of 12 kV, 24 kV, 36 kV, 38,5 kV and a rated current range from 630 A
to 6300 A.
The rated short time current upto 63 kA for a duration of 3 s depending on the model has been tested.
The 3-pole Earthing Switches ES can be used for a rated voltage range of 12 kV, 24 kV, 36 kV and 38,5 kV.
A rated short time current of 20 kA and 31,5 kA is specified.
The described Disconnectors are intended for currentless switching in medium voltage switchgear.
All switchgears are type-tested according to EN 62271-102.
For each switchgear an instruction manual for transportation, mounting and commissioning is inclosed. This instruction manual should be
strictly followed. Refer to brochure 731e
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Rated voltage 12, 24, 36 and 38.5 kV
Rated current 630 A and 1250 A
Switch-fuse combinations are used for operational medium voltage-side on and off switching of distribution transformers in secondary substations. They additionally have the task of protecting these transformers against the impact of internal and external faults.
These combinations comprise a functional unit of switch disconnectors and back-up fuses.
By means of the fuses the breaking capacity of the combination is extended beyond that of a simple switch disconnector up to the rated short-circuit breaking current.
The high-voltage high breaking capacity fuse, according to statistics of the VDN (German Association of Electricity Network Operators) is rated as reliable transformer protection. The h.v.h.b.c. fuse in combination with a switch disconnector provides a simple solution which is very economical to procure and run.
This provides a clear-cut advantage over a circuit breaker with the associated current transformers and overcurrent time protection.
Besides this, the h.v.h.b.c. fuse has a current limiting effect when short-circuits occur and reliably interrupts the fault current of the first half cycle.
These properties are advantageous for the dimensional design of the network.
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Low Voltage Switchgears General Specifications
TERASAKI designs / manufactures / provides Low Voltage Switchgears which meet the
various environmental conditions for industrial, and they offer highly reliability,
quality, safeness and user-friendliness.
Item Standard Specifications
For Applicable Standards IEC 60439-1 / JEM1265
For Ratings
1: Rated Insulation Voltage: AC690V
2: Rated Frequency :50Hz / 60Hz
3: Control Voltage: AC110V , DC100V
4: Bus-bar Current :400A to 3150A ,
5: Rated Short-time Current :Max. 85kA
For Constructions
1: Degree of Protection IP41 Indoor
2: Panel Construction Metal-enclosed Switchger and Controlgear
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Power/Vac Metal Clad Switchgear:
GE's POWER/VAC product line combines the features of metalclad construction with POWER/VAC vacuum interrupter technology in the manufacture and design of a superior class of medium voltage switchgear. Available with ratings from 5 to 38kV.
PV System 27/38 Metal Enclosed Switchgear:
This 38kV switchgear delivers advanced vacuum circuit breaker technology and uncompromsing attention to every detail.
Power/Vac® OEM Express Switchgear:
Designed with the OEM in mind, POWER/VAC® OEM Express is fully assembled, mechanically complete switchgear without devices and wire.
Arc-Resistant Metal Clad Switchgear:
Our arc-resistant switchgear offering is designed to direct and control the energy released while minimizing injury to personnel and reducing collateral damage to surrounding equipment. Available with ratings from 5 to 38kV.
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Medium voltage, arc-proof, air-insulated, metal-clad switchgear and controlgear up to 12kV
Characteristics
・Medium voltage switchgear for marine and offshore use
・Full type approval
・Type tested in accordance with IEC pub.60298
・Metal-clad construction
・Independently arc-fault tested
・Circuit breaker with safety metal shutter
・Option of air insulated bus bars
・Safety mechanical interlocks
・Front service operation
・Circuit breaker insertion and withdrawal with the front panel door closed
・Making current earthing switch
・Intelligent circuit monitoring devices
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With the CT contactor series Schaltbau is introducing a new and innovative contactor concept to the market: power contactors in a completely new style and design, specially developed for the sophisticated requirements of the railway industry. The outstanding technical feature of this new product is the innovative combination of electromagnetic and permanent-magnetic blowout technology for electric arc control. The successful combination of these two principles greatly improves both switching functionality and reliability and forms a practical and economically impressive device concept.
The innovative core of the new CT series is the electric arc control technology: in contrast to contactor concepts purely based on electromagnetic blowout, the arcs created at the moment of switching off are ignited in powerful permanent-magnetic blowout fields. Thus the dwell periods in the contact zones are limited to an absolute minimum. This leads to a significant reduction in arc-related burn-up when switching off. The lower degree of wear on the contacts makes it possible to greatly increase maintenance intervals.
The arcs blown out of the contact zones act as wear-free switches in the next phase: the skipping to adjacent arc modulators activates the blowout coils, making switching-off procedures independent of the direction of the current from that moment onwards. In the final phase the arcs pass through an arc chute, are stretched across the divergently arranged modulators and then effectively extinguished in a ceramic chamber. The special design of the extinguishing process reduces the discharge of ionised gases from the arc chute.
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The CVB Series vacuum circuit breaker is the main electrical switch and protection device of AC locomotives and electric multiple units. Mode of operation: The energy required to switch on the CVB is stored by a spring. It takes only a small pulse energy to unlock the main spring release latch and set free the stored energy. As soon as the supply voltage is applied, the spring gets recharged in less than 10 s. When no control voltage is being applied, the vacuum circuit breaker is in switched off position and the spring remains charged and ready for the next switching operation.
Features:
- Electrically driven vacuum circuit breaker
- No secondary supply energy like pressurized air required
- Versions for 15 kV to UIC 550 available
- Following the fail safe principle
Application:
- AC main switch in electric locomotives and EMUs
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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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Over the past century, GE has designed and manufactured literally tens of thousands of medium and high voltage circuit breakers. Although many of the older designs are no longer manufactured, many units remain in service. GE can deliver solutions for these breakers without the cost and downtime associated with complete equipment replacement. If you have any of the following breakers in service, we can provide parts or engineered solutions to support your maintenance needs:
Features and Benefits
* Parts designed and manufactured to the original or improved specifications.
* Parts in stock for fast delivery when you need them.
* Engineering support to provide support for your specific requirements.
* Extend the service life of your equipment with Genuine GE Parts, designed by the original manufacturer assuring reliable fit and performance.
* Increase rating capacity with packaged engineered solutions.
* Save time with easy to install original parts
* On-site service installation or supervision optionally available.
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Features and Benefits :
- Parts designed and manufactured to the original or improved specifications.
- Parts in stock for fast delivery when you need them.
- Engineering support to provide support for your specific requirements.
- Extend the service life of your equipment with Genuine GE Parts, designed by the original manufacturer assuring reliable fit and performance.
- Increase rating capacity with packaged engineered solutions.
- Save time with easy to install original parts
- On-site service installation or supervision optionally available.
Product Scope:
- MagneBlast Medium Voltage vertical lift circuit breakers.
- FK, FKD, FKA and VIB medium and high voltage outdoor distribution breakers.
- ARA generator breakers.
- ATB high Voltage transmission breakers.
- Type MC and AG dc breakers.
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Siemens high-voltage circuit-breakers offer the optimum technical and economical solution for every requirement. Depending on the application and the voltage level, they are equipped with the following combinations of arc quenching principle and operating mechanism:
* Self-compression principle with stored energy spring mechanism
* Puffertype with hydraulic mechanism
All the live- and dead-tank circuit-breakers, as well as the gas-insulated switchgear (GIS), are equipped with the same components. Longevity, reliability and highest availability in all climate zones in the world distinguish Siemens high-voltage circuit-breakers from all others.
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Features and Benefits :
- Modular design with interchangeable footprint and parts for all breaker sizes
- Comprehensive mechanical and electrical interlocks for operating safety
- Virtually maintenance-free vacuum interrupter contacts
- Direct reading erosion indicator for vacuum interrupter contacts
- Superior vacuum interrupter technology
- Reliable, quite arc interruption
- Extensive factory testing
- Operator convenience
- Reduced maintenance required over product life
- High degree of reliability and product integrity
Product Scope:
- Modular, standardized frame size, regardless of voltage or interrupting capacity.
- Most of the frame parts, primary conductors, disconnects, and mechanisms are interchangeable throughout the breaker product line
- Can be used in systems rated 4.16kV - 250 MVA through 13.8kV - 1500 MVA at 1200, 2000, 3000, 3500, and 4000 A (in fan-cooled equipment)
- Ratings 27kV 16kA & 25kA, 1200 & 2000A are available.
- Designed and tested to all applicable ANSI, IEEE , and NEMA standards, and carry a UL and CSA label.
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The heart of the GE PowerVac® circuit breaker is the vacuum interrupter. GE pioneered this interrupter technology beginning with experimental work in the 1920's. Today, the vacuum design remains superior to other arc interruption technologies by providing a smaller footprint and simpler design.
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Indoor medium voltage switches
Vacuum circuit-breaker type V...
according to IEC 62271-100 + A1
• Rated voltage 12 kV, 24 kV, 36 kV and 38.5 kV
• Rated current 630 A, 1250 A, 1600 A and 2000 A
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Power/Vac® Vacuum Breakers
1200 to 4000A. GE pioneered this interrupter technology beginning with experimental work in the 1920's. Today, the vacuum design remains superior to other arc interruption technologies by providing a smaller footprint and simpler design.
Power/Vac® Replacement Vacuum Breakers
1200 to 3000A. GE Power/Vac® Vertical Lift (VL) breakers provide an economical and efficient way for customers to upgrade existing GE Magne-Blast Type AM (Air Magnetic) vertical lift circuit breakers.
Power/Vac® Vacuum Distribution Breakers
200 to 1120A. GE's outdoor distribution breaker uses the same proven vacuum interrupter technology as found in GE's Power/Vac breaker installed in metalclad, medium voltage switchgear.
Power/Vac® Vacuum Distribution Recloser Breakers
200 to 1120A. The GE Distribution Recloser helps customers maximize uptime and minimize outages by clearing non-persistent or temporary overhead faults.
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- For use on closed vessels and piping systems to
control induced vacuum within safe limits
- Adjustable from 1/4" - 20" (8-508mm) Hg vacuum - factory
set at 2" (51mm) Hg vacuum
- 3/4" NPT straight shank
- Maximum operating temperature 366°F(186°C)
- Maximum operating pressure 150 psig (10.3 bar)
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1. General
1) High reliability of the operating mechanism
- Separate design of the main circuit from the operating mechanism.
- Adopt the toggle link method.
- Improved the reliability of electric circuit.
- Adopt the rapid auto-reclosing method as a standard option. (O-0.3sec.-CO-3min.-CO)
2) High interrupting performance
- Make short of the interrupting time. (3cycles)
- Increase the rated short-circuit withstand characteristics. (1sec. to 3sec.)
3) Great operational safety
- Reinforce the insulation in the conduct, by adopting the molded housing in each phase.
- Built in the device making the contacts open first when draw in and out.
- Adopt the tulip-shape connection between the cradle and the VCB.
2. Type: LVB
3. Ratings
- Rated voltage: 7.2kV, 12kV, 17.5kV, 24kV
- Rated normal current: 630A, 1250A, 2000A, 2500A
- Rated short-time withstand current: Max. 40kA
4. Wide range of accessories (optional)
5. Applied standard: IEC 62271-100 (M2, E2(List1), C2 class)
6. Certification: KEMA, KERI
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