ABB MV Products

• Panels are designed in accordance with ABB’s guidelines and as per IEC / IS Standards.
• Compact and Robust
• Cassette mounted CB of ABB make with draw out feature with cubicle front door closed
• Complies to latest standards of IEC 62271-200
• Modular structure with metal clad design with inter panel metal segregation
• Lockable Automatic Safety Shutters for Breaker Compartment Mechanical indication of test and service positions
• Long mechanical life with sturdy and proven operating mechanism
• Electrical-pumping
• Fully Compartmentalized construction with IP4X degree of protection externally and IP2X between compartments for Indoor Type
• Bus Riser is provided in bus coupler panel itself for panels rated upto 33KV 2000A, leading to floor space saving.

Emphasis on Operator’s safety by:

• Foolproof mechanical interlock to prevent rack-in and rack-out of closed breaker
• Independent exhaust vent for all HT compartments
• Multiple guides for safe, sure and enduring self aligning power contacts
• Live parts are covered by automatic shutters when breaker is racked out
• Integral Earthing switch (optional)

MV Air – Insulated Switchgear Range

Medium Voltage family, mirroring all the Construction characteristics of the Standard version

Available with current ratings upto 4000A and Short Time Ratings of 26.3/40KA. Panel is designed and type tested to meet the requirements of IEC-60298 / IS :3427. Choice of Aluminium and Copper Busbars

Available with current ratings upto 4000A and Short Time Ratings of 26.3/40/44KA. Panel is designed and type tested to meet the requirements of IEC-60298 & IS :3427. Degree of Protection for enclosure upto IP42 For Indoor and IP55 for Outdoor Applications.

Unigear type ZVC switchgear : Medium voltage, arc-proof, air-insulated switchgear

Unigear type ZVC switchgear, ABB’s medium voltage air-insulated switchgear, is the result of ABB’s global know-how integrated into a single technological solution and is also ABB’s answer to the range of solutions demanded by global markets. The switchgear complies with IEC 62271-200 standards. ‘Made in ABB’, UniGear comes with the same design and quality standards across 5 continents, and offers the best solutions for all installations including power plants, power distribution substations, compact Motor Control Centers, double-level, duplex and special-unit switchgear.

Salient Features

• Metal-clad, four-sided internal arc-proof construction (IAC AFLR)
• Designed in conformance with the highest in class for minimum Loss of Service Continuity – ‘LSC-2B with metallic partitions’
• Constructed with pre-galvanized sheets without welding points, making it the most reliable switchgear in its range
• REF542 and other high-end communicable relays offer intelligent solutions for all installation requirements
• It is virtually maintenance-free and all circuit breaker operations can be carried out with the door closed
• Earthing-switch is provided as an option. It is rated for full making capacity and is provided with safe and reliable position indicators
• All compartments can be accessed from the front, hence the switchgear can be placed against the wall
• The switchgear is provided with conventional or integrated protection and measurement systems
• It is fitted with conventional instrument transformers or new generation sensors

Apparatus which can be installed in UniGear Switchgear

VACUUM CIRCUIT-BREAKER – CASSETTE VERSION

• Circuit-breaker for all fields of application
• Vacuum Interrupters, using radial magnetic field contact system, rotate arc column over the complete contact periphery  to give the best current-interruption performance at all current values
• Epoxy resin poles for greater protection of the interrupters

VACUUM CIRCUIT-BREAKER – FLOOR-ROLLING VERSION

• Circuit-breaker for all fields of application
  • Vacuum Interrupters, using radial magnetic field contact system, rotate arc column over the complete contact periphery to give the best current-interruption performance at all current values
  • Epoxy resin poles for greater protection of the interrupters

VACUUM CIRCUIT-BREAKER WITH MAGNETIC DRIVE

• The magnetic actuator is a bi-stable system with electromagnetic coils for driving the armature and permanent magnet for latching on to the end positions
• All functions like charging, switching, controlling and self-diagnostics are carried out from an integrated electronic controller
• Equipped with multi voltage feeder in direct and alternating current

VACUUM CONTACTORS

• Optimal solution for motor and transformer switching and switching of capacitor bank for power-factor control
• Fitted with medium voltage fuses according to DIN and BS Standards
• Availability of operating mechanisms with electric or mechanical latching functions
• Equipped with multi voltage feeder in direct and alternating current

• dium voltage switchgear for the most cost-effective solution due to compact design
• Highest Generator-fed fault breaking capacity at the same System-fed fault breaking capacity level among competitors
• Same familiar ABB medium voltage circuit breakers design
• Cassettes and module systems available for OEMs and panel builders to create their own solutions

Key features

• Ratings up to 15 kV; …4,000 A; …63 kA for generators up to 100 MVA
• Vacuum interrupters embedded in poles for protection against humidity, shock and dust
• Special design allows ultra-demanding breaking current switching without any additional opening
• Completely type-tested in accordance to the latest IEEE/IEC 62271-37-013 standards

MEDIUM VOLTAGE, ARC-PROOF, UNIGEAR AIR-INSULATED SWITCHGEAR

Unigear Air-insulated switchgear, ABB’s medium voltage air-insulated switchgear, is the result of ABB’s global know-how integrated into a single technological solution and is also ABB’s answer to the range of solutions demanded by global markets. The switchgear complies with IEC 62271-200 standards. ‘Made in ABB’, UniGear comes with the same design and quality standards across 5 continents, and offers the best solutions for all installations including power plants, power distribution substations, compact Motor Control Centers, double-level, duplex and special-unit switchgear.

Salient Features

• Metal-clad, four-sided internal arc-proof construction (IAC AFLR)
• Designed in conformance with the highest in class for minimum Loss of Service Continuity – ‘LSC-2B with metallic partitions’
• Constructed with pre-galvanized sheets without welding points, making it the most reliable switchgear in its range
• REF542 and other high-end communicable relays offer intelligent solutions for all installation requirements
• It is virtually maintenance-free and all circuit breaker operations can be carried out with the door closed
• Earthing-switch is provided as an option. It is rated for full making capacity and is provided with safe and reliable position indicators
• All compartments can be accessed from the front, hence the switchgear can be placed against the wall
• The switchgear is provided with conventional or integrated protection and measurement systems
• It is fitted with conventional instrument transformers or new generation sensors

APPARATUS WHICH CAN BE INSTALLED IN UNIGEA R SWITCHGEAR

VACUUM CIRCUIT-BREAKER – CASSETTE VERSION

• Circuit-breaker for all fields of application
• Vacuum Interrupters, using radial magnetic field contact system, rotate arc column over the complete contact periphery  to give the best current-interruption performance at all current values
• Epoxy resin poles for greater protection of the interrupters

VACUUM CIRCUIT-BREAKER – FLOOR-ROLLING VERSION

• Circuit-breaker for all applications
  • Vacuum Interrupters, using radial magnetic field contact system, rotate arc column over the complete contact periphery to give the best current-interruption performance at all current values
  • Epoxy resin poles for greater protection of the interrupters

ABB Transformer unit Outdoor Vacuum Circuit Breakers upto 33KV :
Available in current ratings upto 2500A and Short time withstand current of 31.5 KA/3sec. It is designed and type tested to meet requirements of IEC-60056

Salient Features :
– Porcelain Clad Construction, suitable for outdoor sub-station layouts
– Fully Type Tested
– Guaranteed for long electrical life with proven vacuum interrupters and excellent arc quenching and insulating – properties of vacuum
– Guaranteed for long mechanical life
– Minimal operating energy required enabling use of simple, reliable and proven low energy spring operating mechanism Re-strike free
– Suitable for auto-reclosure duty cycle
– Mechanical Operation counter
– Easy to install-structure mounted, with an option to extend structure for mounting of instrument transformer
– Complete breaker can be shipped as one single unit-no adjustment required at site
– Applications-capacitor switching, distribution networks, arc furnace duty, switching unloaded transformers and reactors

Outdoor SF- 6 Circuit Breakers upto 40KV :
Available in a current rating of upto 2500A and STR of 31.5KA / 3sec. It is designed and type tested to meet requirements of IEC-62271-100.

Used in power distribution for controlling and protecting lines, substations and transformer and distribution substations, transformers, rectifier units, capacitor banks etc Thanks to SF-6 AUTOPUFFER breaking technique, they do not generate over voltages and are therefore highly suitable for retrofitting, upgrading and enlarging older installations where the insulating materials of the cables and apparatus may have been stressed during service.

OPERATION

CLOSING-

In the open position, the magnetic actuator’s armature rests against the bottom plate in the actuator assembly. The armature is held there by the force developed by the magnet. When the top coil is energized, the magnetic flux generated is in the same direction as the magnet assembly. The armature is drawn into the coil and brought into contact with the upper plate. In this position, the coil is de energized and the armature is held in position by the magnets alone. As the armature is drawn into the coil, the operating rod, which is attached to the top guide rod, moves the moving contact of the vacuum interrupter towards the closed position. The actuator has more stroke than the vacuum interrupter and the interrupter contacts make contact before the actuator has completed the stroke. The additional movement of the operating rod after the contact closing causes the contact pressure spring to compress at the top of the operating rod. This wipe allows for contact wear in service.

OPENING –

When the bottom coil is energized, the magnetic flux opposes the force generated by the magnet assembly. This reduces the holding force, the armature is released and the coil attracts the armature to the bottom plate. Once there, it is held open by the magnet.

Key benefits

• Compatible with all forms for overcurrent, reclosing and control functions
• Reduced maintenance with magnetic actuator and easy plug-and-play actuator circuitry
• Durable design exceeds ANSI C37.06 standard with a rating of 10,000 mechanical or load operations

Key features

• Dead tank solution
• Designed and type tested based on latest ANSI standards
• 15/27/38 kV rating classes and up to 3,700 A continuous current
• Up to 40 kA short-circuit interrupting current
• Five-year full warranty

ABB AIS panels breaker : Medium Voltage family, mirroring all the Construction characteristics of the Standard version

Available with current ratings upto 4000A and Short Time Ratings of 26.3/40KA. Panel is designed and type tested to meet the requirements of IEC-60298 / IS :3427. Choice of Aluminium and Copper Busbars

Available with current ratings upto 4000A and Short Time Ratings of 26.3/40KA/44KA. Panel is designed and type tested to meet the requirements of IEC-60298 & IS :3427. Degree of Protection for enclosure upto IP55

ABB SF6 Insulated RMU – SF6 INSULATED RING MAIN UNITS AND COMPACT SWITCHGEAR – SAFERING AND SAFEPLUS FOR SAFE AND RELIABLE POWER DISTRIBUTION

SF6 Insulated Ring Main Units And Compact Switchgear – Safering And Safeplus

ABB offers a complete solution for 12/24 kV distribution networks. This consists of SafeRing, a Ring Main Unit (RMU) that can be supplied in various configurations and SafePlus, a compact switchgear with unique flexibility. SafePlus offers extendibility and fully / semi modular configuration possibilities. Both the units have identical user interfaces. SafeRing / SafePlus are delivered as a completely sealed system with a stainless steel tank containingall the live parts and the switching equipment. Constant atmospheric conditions in the sealed tank ensures a high level of reliability, safety and a virtually maintenance-free system. As an option in SafePlus, an external busbar can be provided to enable a completely modular configuration. SafeRing and SafePlus can also be fitted with a remote control and monitoring unit and are suitable for both indoor and outdoor applications.

• Compact and robust design
• Minimal moving parts
• Virtually maintenance free
• High degree of functionality with integrated features
• High flexibility
• Multiple configuration options
• Enhanced safety
• Complete solutions including applications
• for remote control and monitoring

Standard Equipment Supplied With Safering / Safeplus

• Earthling switches
• Operating mechanism with integral mechanical
• Interlocking
• Operating handle
• Facilities for padlocks on all switching equipment
• Bushing for cable connections in front with arc resistant
• cable covers for utmost operator safety
• Manometer for SF6 gas pressure monitoring
• Lifting lug for easy handling
• All units are designed so that an integrated remote
• control and monitoring unit can be fitted when required

Applications

• City Power Distribution
• Small Industries,
• Hotels, Shopping Centers, Office Buildings, Business Centers, Etc.
• Compact Secondary
• Light Mining  Applications, Tunnels And Underground Railways
• Wind Turbines

Safeplus And Safering

Voltage And Short Circuit Indicators

As an option these units can be equipped with fixed type or plug-in type voltage indicators as well as electronic short circuit indicators for simple fault indication.

Circuit breaker with relay

When vacuum circuit breakers are used for transformer protection, self-powered microprocessor based over Current and earth fault relay are used. The protection system does not require an external power supply, as the power is taken from the current transformers.

ABB dry type transformer is applicable in indoors otherwise outdoors like a commercial, utility, industrial applications. There are various types of electrical devices or components available where some of them operate with the same frequency although the transformer is required for different voltage otherwise current requirements. The main function of a transformer in an electrical circuit is to increase or decrease currents/voltages. There are different types of transformers available in the market but the “Dry Type Transformer” is recommended due to some benefits as inexpensive, more efficient and they have safety features. These transformers also called cast resin type transformers.

There are many important factors need to consider while designing this type of transformer, they are

• Selection of Type of Insulation
• Expectancy of Life
• Core Material Selection with Less Hysteresis Loss
• Level of Insulation
• Losses
• Winding Material Selection
• Regulation
• K-factor
• Overloading

In this transformer, insulation breakdown is the most frequently occurred failure which results in severe faults like earth faults or phase-phase winding. Based on the tests only the condition of insulation for the component parts in the transformer like core, windings, and bushings can be determined. In oil type transformer, the condition of winding insulation can be determined by using the common method like dissolved gas analysis but it cannot be achievable in dry-type transformers. There are different tests that include the following.

• Tests for partial discharge
• Insulation resistance tests
• Analysis of frequency response
• Polarization index tests
• Thermographic surveys
• Measurement tests for dielectric loss angle
• Acoustic emission tests

THE ADVANTAGES ARE

• It is pollution-free
• These are used in the areas of contaminated and damped
• Installation is simple
• They are long last because of the dielectric heating & low thermal
• Protects the property & people
• For short circuit currents, they have high resistance
• Low Side clearance
• Performance is excellent
• Capacity is high to support overloads

The applications are

• They are used in different industries like gas, chemical, and oil
• These are used in water protection areas which are sensitive environmentally
• Forests
• Used in substations of inner cities
• Substations like indoor as well as underground
• Renewable generation

VD4 R circuit breaker : Our product offering covers a wide spectrum of technologies across the entire voltage range including indoor and outdoor circuit breakers, air and gas insulated switchgear, instrument transformers, disconnectors, capacitor banks, reactive power compensators, power and distribution transformers and a range of power distribution products like compact secondary substations (CSS) and ring main units (RMU).

Vacuum and SF6 gas circuit breaker for safe and reliable electrical power distribution or generation in your application up to 46 kV, 4000 A, 63 kA.

Maximize output and productivity with devices that support the continuous operation of your processes, e.g. three times higher mechanical endurance than the standard.

Protect assets with safe and reliable devices, e.g. generator circuit-breaker type tested to the new global dual logo standard (IEC/IEEE 62271-37-013).

Optimize investments with compact devices and high performance, e.g. 17.5 kV/50 kA circuit breaker with 210 mm pole distance.

ABB’s indoor circuit-breakers have been designed to serve your business needs.

With the wide and globally available portfolio we are able to offer you the right fit for the switching of short-circuit currents, overhead lines and cables under load and no load, transformers and generators, motors, ripple control systems and capacitors – even in parallel.

VD4/R circuit breakers with lateral operating mechanisms can be used in all medium voltage secondary distribution systems and MV/LV transformer substations in factories, industrial workshops and in the services sector. Thanks to installation (on request) of the self-supplied PR521 overcurrent release with microprocessor, the VD4/R breakers are suitable for use in unmanned MV/LV transformer substations without auxiliary power supply.

Product scope

• Medium voltage circuit breakers with lateral mechanical actuator (spring mechanism) for secondary distribution, up to 24 kV, 1250 A, 25 kA.

Key benefits

• The compact medium voltage vacuum circuit breaker solution for low-duty distribution
• Easy and fast to install thanks to the optional integrated solution: onboard-tested relay and current sensors/trasformers
• Ideal solution for metal-clad switchgear

Key features

• Modular spring-operated mechanical actuator ensuring easy operation even without auxiliary supply
• Interchangeable with HD4/R
• Performs fast operating cycles

ABB Safering 36 RMU , Ring Main Unit (RMU) is a compact, sealed for life metal-enclosed switchgear widely used in Urban Power Distribution Network. . Some of the key features of the RMU includes SF6 gas insulation, compact and modular construction, integral protection system, fully extendable options, and low maintenance.

FEATURES

• Compact
• Metal enclosed design
• Type tested acc. to all relevant IEC standards
• Manufactured acc. to ISO 9001 and 14001
• Recyclable and very low environmental impact
• Maintenance free
• Arc proof
• Extensible in both directions
• No exposure of live parts

Ring Main Unit, RMU is a compact, enclosed and sealed type of Switchgear used for medium voltage power distribution. It is a complete Switchgear in itself. A complete Switchgear means, assembly of required switching devices, protection device as well as metering device. RMU of different voltage (mostly 12 kV and 24 kV) and current ratings are available.  Indoor as well as outdoor types of Ring Main Units are available.

Ring Main Unit comprises of one incomer feeder and one or more outgoing feeder. The incomer feeder is either Vacuum Circuit Breaker or SF6 Circuit Breaker with associated Disconnect Switch and Earth Switch. This incomer feeder is given with the provision of bushing protruding from the enclosure of RMU for supply cable connection.

Outgoing feeder comprises of Load Break Switches with associated Disconnect Switch and Earth Switch. Provision for cable connection is provided in outgoing feeder. The Load Break Switch is nothing but an isolator having the capability of breaking the circuit during on load condition.