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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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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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The new air-insulated DRIESCHER mediumvoltage
compact switchgears are ideal for application
in secondary substations without control
aisles.
They meet the user's specific requirements to the
full and ensure a satisfactory power distribution.
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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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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.
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Designed with the OEM in mind, Power/Vac® OEM Express is fully assembled mechanically complete switchgear without devices and wire. This results in shorter cycles than finished switchgear products, while allowing the OEM to add contributive value by mounting devices and wiring the equipment. OEM Ex-press is the same robust, high quality design, which has made Power/Vac ® switchgear and Power/Vac® breakers the most recognized name in the industry for medium voltage switchgear. A full range of ratings is available from 5kV 250mva through 15kV 1500mva. Both indoor and outdoor construction is offered along with a wide variety of stacking configurations.
Features and Benefits
* Two high breaker stacking
* Blank front hinged doors - door punching optional
* Bolted rear covers
* Includes internal device mounting panels
* Terminal block mounting space
* Ground & Test devices, test cabinet, remote racking available
Product Scope
* Ratings 5kv 250 mva through 15kv 1500mva
* 1200 amp, 2000 amp, 3000 amp bus
* Indoor & outdoor construction
* Features GE Power/Vac vacuum breakers
* UR label
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Arc resistant switchgear channels the energy released during an internal arc fault in ways that minimize the potential for injury to personnel and damage to surrounding equipment. Across the line, this switchgear leads the way in arc resistant technology. It’s available in ANSI Type 1 or Type 2 construction with no larger footprint than the standard switchgear design. Circuit breakers are interlocked so they cannot be opened, closed or racked to the connected position with the arc resistant door open. This minimizes the opportunity for operator error. But arc resistant protection is important at every step, not just when opening and closing the circuit breaker, so our single-latch doors close and engage in a single action, which provides virtually automatic protection for the operator. The pressure release venting panels are maintenance-free.
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The CPA-AMC system consists of a series of air-insulated modular cubicles with metal-clad compartments and withdrawable module technology for Medium Voltage primary distribution and industrial installations up to 17.5 kV.
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Sprecher Automation provides two MV switchgears (M1 and M2) which are based on a highly modular and flexibel standardised system. The switchgear components are provided by ELATEC. Sprecher Automation supplies project management, overall and detailed planning, assembly, final assembly and final inspection as well as testing. Beside the factory-assembled delivery, Sprecher also provides on-site installation, commissioning as well as service and maintenance by its own staff.
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Our medium-voltage control equipment operates transformers, motors and special consumers in potentially explosive mine openings. They can be supplied for the following voltage levels: 3,3kV, 5kV, 6kV and 10kV.
They are characterized by
flameproof equipment compartment with central locking system
terminal compartment in flameproof or increased safety
standard enclosure with a volume of 540, 600 or 1000 litres
special constructions on request
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GE Commercial Alliance with Powell Industries
Effective August 2006, GE and Powell Industries entered into a commercial alliance that offers new benefits to our customers. In summary:
* Powell has acquired technology and certain assets associated with GE's MV ANSI switchgear product line, including breakers.
* Powell will provide GE Consumer & Industrial with all of its MV ANSI switchgear needs, including equipment rated up to 38kV and a complete line of arc-resistant equipment.
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Solution Power series Switchgear using a Pro-MEC Vacuum Circuit Breaker(VCB) is metal-clad type in compliance with IEC/BS standards, and is designed fo general power distribution systems with rated voltage up to 24kV.
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Medium voltage switchgear (AIS Type) Medium voltage switchgear (AIS Type) withdrawable circuit-breaker up to 17.5 kV
Description
NEX17 is a modular type tested cubicle, designed to meet local requirements and local standards, equipped with EVOLIS vacuum circuit-breaker.
NEX17 is manufactured, with Schneider Electric’s support, by franchised panelbuilders
Performances:
Technology:Vacuum
Standard:IEC
Rated voltage:17,5kV
Busbar system:Single
Rated current busbar:2500A
Rated operational current:2500A
Rated peak withstand current:31.5kA
Internal Arc Classification:AFLR 25kA/0.5s
Loss of service continuity:LSC 2B
Partition class:PM
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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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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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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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ELECTRICAL POWER DISTRIBUTION: ETI provides high-quality solutions for the protection of low and high-voltage electrical installations in the field of electric power distribution. We supply a wide range of high-voltage fuse-links of the type VV, low voltage power circuit brekares ETIBREAK, distribution cabinets KVS, medium voltage surge arresters ETISURGE and ceramic as well as polymeric insulators.
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Ferraz Shawmut is involved in the medium voltage protection from many years. The expertise is centered on the protection of the MV/LV transformer in the power distribution networks with solutions encompassing medium voltage Limitor® fuses for overhead lines protection, oil-tight medium voltage fuses fitting the transformer tank and fault indicators especially the Nortroll® products. Our medium voltage solutions concern also the industrial field with both North-American and European (DIN) standard medium-voltage motor protection fuses. The offering covers also the protection of potential transformers and medium voltage capacitors.
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Liquid-filled distribution transformers: Power ratings from 15 kVA to 10,000 kVA/36 kV
Liquid-filled distribution transformers are manufactured in Mechelen (Pauwels Trafo Belgium N.V.).
Cavan (Pauwels Trafo Ireland Ltd). Washington/Missouri-USA (Pauwels Transformers Inc.)
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Electrolytic Plants, Metal-refining plants,
Induction-Melting and Glass Furnaces applications.
Distribution and Power transformers.
Rectifier and Furnace transformers.
ONAN - ONAF - OFAF - OFWF cooling technology.
Voltage up to 145 kV and Power up to 20MVA
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Transformers are fullfilled with oil and hermetically closed through a sub-vaccuum process controlled.
Tank finned, after a verified design and calculate, deaden possible pressions, caused by atmospheric disharge or by short-circuits, deform itself and absorbing energy.
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Commercial Pole-Mounted
GE three phase pad-mounted and single phase pole-mounted transformers are a safe and effective way to provide power distribution to residential, commercial, industrial, and institutional loads. GE COMPAD transformer distribution units are designed in neat, clean, and modern packages to meet your power distribution needs.
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These transformer comply the folowing characteristics:
Three-phase, 50hz, for outdoor or indoor instalation.
Immersed in mineral oil according to UNE 21-320/5-IEC 296
(other dielectric liquid on demand)
Corrugated tank
natural cooling (ONAN)
The paint finish will be dark-blue, type 8010-B10G
(other colours on demand)
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Liquid filled Distribution Transformers
Oil immersed power transformers can operate with higher power ratings and higher voltage applications than their cast resin counter parts. Oil cooled transformers are widely used in applications of more than 20000kVA. Where fire safety is an issue or an environmentally friendly solution is preferred we can supply midel filled transformers as an alternative.
Range of Products:
- Oil cooled Distribution transformer range 31kVA to 3000kVA Voltage class 36kV
- Oil cooled Power transformers range 3000kVA to 100MVA Voltage class 220Kv
Types:
- Ground mounted/pad mounted transformers
- Pole mounted transformers
- Unit types transformers
- Rectifier transformers
- Series type reactors
- Other custom design transformers
Basic Features:
- Steel welded tank construction
- Skid mounted base
- Tap changer
- Radiators
- Suitable for direct mounting switchgear (LV & MV)
- Oil level indicator
- Rating plate
- Lifting & jacking points
- Liquid filling point & drain valve
- LV & HV steel fabricated cable boxes
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Rapier RX
The Rapier RX range incorporates a modular design switch that can be configured to suit a variety of applications. Combining high performance and reliability, the Rapier RX rocking type switch can be a key element in rural distribution networks.
Rapier GX
Based on the latest developments in SF6 switchgear technology, the GX combines high performance and reliability. The GX Load break Switch can be manually operated or motorised for sectionalising, automation and remote control to suit your network requirements.
Rapier DSB
The Rapier Double Side Break 'DSB' range provides a powerful and cost effective solution for isolating a series of circuits and equipment in substation applications. Based on open terminal air break technology, the Rapier DSB range combines robustness and alignment reliability.
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Intuitive interface makes operation simple. Little or no learning curve required to operate system.
A main screen with navigation buttons and non-system critical button/switches.
System testing screen allowing the operator to manually initiate automatic system testing operations.
Generator interface settings latched into the PLC control system upon entry.
System load add/shed manual control redundant to hard-wired manual control switches in master control.
Generator optimization settings latched into PLC control system upon entry.
The system is designed to dynamically add or shed load based on the system load level rather than using inflexible load blocks.
The system is programmed to dynamically track the size of each load individually. This allows the system to quickly determine exactly how many loads are to be added to or shed from the system, whether it is in the middle of the afternoon or in the middle of the night.
A GE governor controller is supplied which has the functionality required by different applications and the flexibility to communicate with all types of existing engines. (Can be used in conjunction with speed controller or can do it itself.)
Capable of soft loading and unloading the generator.
Var/pf controller built in, load sharing (kW and kVar).
Equipped with its own automatic synchronizer that checks for voltage matching.
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Medium and high voltage electrical equipment
