Megawin Switchgear

A family-owned business established in the year 1987 at Salem, Tamil Nadu, Megawin is the largest manufacturer of vacuum circuit breakers.

Megawin has grown to be one of India’s pioneers in medium voltage switchgears, dry-type transformers and packaged substations. They boast of having five large state of the art facilities for switchgear assembly, vacuum interrupters, protection and control, fabrication, tool room and machine shop.

Their product range:

Air Insulated Switchgear

• Metal Clad VCB
• Load Break Switch (LBS)
• Vacuum Contactor
• Railway VCB

Pole Mounted Switchgear

• Auto Recloser
• Sectionaliser

Gas Insulated Switchgear

• SF6 Sectionalizer
• Gas Insulated VCB

​Distribution Automation

• Ring Main Unit (RMU)
• Auto Recloser

​Cast Resin Transformer

Packaged Substation

11kV VACUUM CIRCUIT BREAKERS

Ratings

• 12kV/2000A/25kA

Breaker Type

Mid Mounted Casette

Type

Indoor and Outdoor

Suitable for line up of panels

Product Description

Megawin Diya series is built for 12kV voltage classes up to 2000A/ up to 25kA for indoor and outdoor formats. Diya is type tested for internal arc, E2, C2 and M2 class for 650mm panel width and is suitable for line up of panels.

Product Features

• Suitable for line up
• Mid mount cassette type vacuum circuit breaker (VCB)
• Motorized spring charged mechanism, with manual option
• Ready to connect to any remote control & monitoring system and to any SCADA system
• Type tested for E2, C2, M2 class and internal arc.
• Circuit breaker and VT compartments have interlocked access
• Busbar and cable compartments have tool based access
• In a line-up arrangement, Internal Arc venting duct is formed to direct arc to outside the substation
• Provided with all safety interlocks and padlocks
• Mechanical push to TRIP and CLOSE buttons, with front door closed condition
• Separate compartments, with metallic partition, for busbar, cable, circuit breaker, low voltage and VT as applicable
• Both indoor and outdoor formats available

Application 

• Capacitor bank switching
• Transformer switching
• Motor switching
• Feeder switching

Market Segments

• Utilities (primary and secondary)
• Generation
• Industries
• Large Buildings
• Oil & Gas
• Infrastructure

22kV VACUUM CIRCUIT BREAKERS & 33kV VACUUM CIRCUIT BREAKERS

Duvi

Ratings

• 11kV/1250A/40kA
• 11kV/3150A/40kA

800mm width

• 22kV/800A/25kA
• 22kV/1250A/25kA

1000mm width

• 33kV/2500A/31.5kA
• 33kV/1250A/31.5kA

1200mm width

Breaker Type

Roll on Floor

Type

Indoor and Outdoor

Suitable for line up of panels

Product Description

Megawin Duvi series is built for 11kV/3150A/40kA,  22kV and 33kV voltage classes up to 2500A/ up to 31.5kA for indoor and outdoor formats. Duvi is type tested for internal arc for 1200mm panel width and is suitable for line up of panels.

Product Features

• Suitable for line up
• Roll on floor  vacuum circuit breaker (VCB)
• Motorized spring charged mechanism, with manual option
• Ready to connect to any remote control & monitoring system and to any Scada System
• Type tested for E2, C2, M2 class and internal arc.
• Circuit breaker and VT compartments have interlocked access
• Busbar and cable compartments have tool based access
• In a line-up arrangement, Internal Arc venting duct is formed to direct arc to outside the substation
• Provided with all safety interlocks and padlocks
• Mechanical push to TRIP and CLOSE buttons, with front door closed condition
• Separate compartments, with metallic partition, for busbar, cable, circuit breaker, low voltage and VT as applicable
• Both indoor and outdoor formats available

Application 

• Capacitor bank switching
• Transformer switching
• Motor switching
• Feeder switching

Market Segments

• Utilities (primary and secondary)
• Generation
• Industries
• Large Buildings
• Oil & Gas
• Infrastructure

RING MAIN UNIT (RMU)

Ratings

• 12kV/630A/25kA    
• 22kV/630A/25kA

Type    

Indoor and outdoor    

Extensible

2 way, 3 way, 4 way, 5 way

Product Description

G6-Series (SAARA) Ring Main Units (RMU’s) are factory assembled, sealed for life, compact SF6 switchgear for secondary distribution for voltage classes of 12kV and 24kV. These automation ready units are offered with extensible and non-extensible construction for indoor and outdoor applications. Various interrupting and switching combinations with single busbar can be provided.

Product Features

• Extensible and non-extensible formats available
• Motorized earthing switch
• Front cable entry
• Hermetically sealed SF6 unit
• Motorized and manual operations for VCB and LBS 
• Corrosion resistant, stainless steel arcing chamber
• Mechanism outside gas chamber
• SCADA compatible.

Safety Features

• Live line indicator
• Earth switch interlocked cable chamber access
• Earthing function after OFF function
• Self-powered protection relays
• Motorized and suitable for remote operation & automation through’ SCADA/ FRTU.
• Available in various combinations

Advantages

• Compact design
• Easy to install and commission
• Light weight
• Environmentally friendly

Application

•  Smart grid protection
•  Secondary distribution
•  Transformer protection
•  Industrial energy systems
• Packages substation

Applicable standards

• Complies with IEC 62271-1/100/102/103/200

VACUUM CONTACTOR

Ratings

• 7.2kV/ 400A/9kA

Type

• Indoor and Outdoor

Product Description

m-Smart vacuum contactors use vacuum interruption for frequent switching in medium voltage applications. Ideally used for Generators, operations of soft starters, Reactor Capacitor switching, motor switching duties, our vacuum contactors can be offered for voltage classes up to 7.2kV with electrical or mechanical latching both in fixed and draw out formats.

Product Features

• Available for voltage classes up to 7.2kV, 400A, 9kA.
• Up to 10,00,000 operations.
• Available in both latched and non-latched versions.
• Available in fixed and draw out formats.
• Fuse available up to 300A in draw out version
• Mechanically interlocked forward/reverse version available

Application 

• Capacitor switching
• Motor switching
• Soft starters
• Neutral grounding of generators
• Transformer switching up to 1 MVA

Market segments

• Process industries
• Service sector
• Marine

Advantage

• Low chopping current
• Accurate coordination with numerical relays
• Cost of power cable is reduced when HRC fuse is used
• Remote indications for status

Applicable standards

• IEC -60470

Vacuum Contactor

Ratings

• 7.2kV/ 400A/9kA

Type

• Indoor and Outdoor

Product Description

m-Smart vacuum contactors use vacuum interruption for frequent switching in medium voltage applications. Ideally used for Generators, operations of soft starters, Reactor Capacitor switching, motor switching duties, our vacuum contactors can be offered for voltage classes up to 7.2kV with electrical or mechanical latching both in fixed and draw out formats.

Product Features

• Available for voltage classes up to 7.2kV, 400A, 9kA.
• Up to 10,00,000 operations.
• Available in both latched and non-latched versions.
• Available in fixed and draw out formats.
• Fuse available up to 300A in draw out version
• Mechanically interlocked forward/reverse version available

Application 

• Capacitor switching
• Motor switching
• Soft starters
• Neutral grounding of generators
• Transformer switching up to 1 MVA

Market segments

• Process industries
• Service sector
• Marine

Advantage

• Low chopping current
• Accurate coordination with numerical relays
• Cost of power cable is reduced when HRC fuse is used
• Remote indications for status

Applicable standards

• IEC -60470

PACKAGED SUBSTATION

Transformer Options

Rated Power

250kVA, 500kVA, 750kVA, 1000kVA, 1250kVA

Primary Voltage

11kV, 22kV and 33kV

Secondary voltage

433V

HT options

VCB, LBS, SF6 RMU, SF6 LBS, SF6 VCB

LT options

ACB, MCCB

Busbar

Copper and Aluminium

Type

Indoor and Outdoor

Product Description

Saghan series of compact substations are available for voltage classes of 12kV, 24kV and 36kV. Our factory assembled weatherproof units are easy to install, requiring very little work at site. Saghan series offers individual access to all compartments, unexposed live parts and all necessary interlocks, making them extremely safe and reliable.

CAST RESIN TRANSFORMER (CRT)

Transformer Options

Rated Power

Upto 3000kVA

Primary Voltage

11kV, 22kV and 33kV

Secondary voltage

433V

Busbar

Copper and Aluminium

Type

Indoor and Outdoor

Product Description

Megawin Cast Resin Transformers are dry type transformers, supplied in sheet steel enclosure suitable for either indoor or outdoor installation and are Air.

Natural (AN) cooled. Higher ratings for hot environments are supplied with forced cooling as well. They are suitable for cable termination on HT side and LT side. Bus-Duct termination is also offered on LT side.

Product Features

• It is compact and maintenance free
• Resin casting provides much better dielectric strength and short circuit withstand capability
• It has negligible partial discharge due to epoxy casting under specialized vacuum process with HV/LV winding separately cast
• The foil winding in LV makes it withstand higher short circuit forces owing to negligible axial force components
• Off circuit Tap changing links are a standard feature. Dry Type On-load Tap changing Gear can also be supplied

Application 

• High- rise buildings
• Congested locations
• Fire hazard areas like mining, oil and gas etc.
• In urban areas where cost of real estate is high

Market Segments

• Utilities (Secondary distribution)
• Industries
• Commercial and infrastructure (residential complex, malls etc.)
• Healthcare
• Mining
• Solar plants

AUTO RECLOSER

Ratings

• 15kV/630A/25kA
• 25kV/630A/25kA
• 36kV/630A/25kA

Type

Outdoor

Mounting

Pole Mount and Sub-station Mount

Product Description

m-Smart three phase reclosers helps improve the reliability and quality of power, ideally suited for outdoor substation and primary distribution for voltage classes 15kV, 25kV and 38kV. This recloser is designed with current sensors and voltage sensors encapsulated in hydrophobic cycloaliphatic epoxy and magnetic actuator mechanism for pole mount and substation mount.

Product Features

• Magnetic actuator mechanism tested 100,000 operations.
• Solid insulation, UV resistant.
• Self-powered. No auxiliary supply is required.
• Hydrophobic cycloaliphatic epoxy bushing (HPEC).
• SCADA compatible/ communicable.
• Designed for four shot auto reclosing duty.
• Manual tripping available with hook stick.
• Off-load isolator for visible isolation.

Application 

• Substation
• Primary distribution
• Rural electrification
• Three phase to single phase change over

Advantages

• Self-powered
• Light weight
• Easy installation
• Cost effective
• Visible isolation.

SECTIONALISER

Ratings

• 12kV/630A/12.5kA
• 24kV/630A/12.5kA
• 36kV/630A/16kA

Type

Outdoor

Mounting

Pole Mount and Sub-station Mount

Product Description

m-Smart three phase sectionaliser helps improve the reliability and quality of power. Ideally suited for primary distribution for voltage classes 12kV, 24kV and 36kV and breaking capacity up to 630A. This solid insulated load break switch is designed with current sensors, voltage sensors encapsulated in hydrophobic cycloaliphatic epoxy for pole mount application

Product Features

• Switch mechanism with 5,000 operations.
• Self-powered. No auxiliary supply is required.
• Hydrophobic cycloaliphatic epoxy bushing (HPEC).
• SCADA compatible/ communicable.
• Manual tripping available with hook stick.

Application 

• Primary distribution
• Rural electrification

Advantages

• Self-powered
• Light weight
• Easy installation
• Cost effective
• Environmentally friendly

Applicable standard

• Complies with IEC 62271-111/ ANSI C3

GAS INSULATED VACUUM CIRCUIT BREAKERS

Ratings

• 12kV/1250A/25kA (3 seconds)
• 22kV/1250A/25kA (3 seconds)
• 33kV/1250A/25kA (3 seconds)
• 33kV/1600A/25kA (3 seconds)
• 33kV/2000A/25kA (3 seconds)

Type

Indoor and Outdoor

Product Description

Megawin Gas Insulated Switchgear (GIS) comes as compact, light, modular and maintenance free units for primary distribution for voltage classes of 12kV, 24kV and 36kV. This three phase unit can have busbar arrangement both inside and outside the hermetically sealed SF6 gas unit for up to 2000A. All our units are assembled and routine tested in the factory. Megawin GIS is engineered to provide high reliability in the network, safety.

Product Features

• Available for classes up to 36kV/2000A/25kA.
• Vacuum interruption with SF6 dielectric medium
• Busbar arrangement can be provided both inside and outside the gas tank.
• Motorized and local operated off load isolator
• Typically used as coupling panels
• Hermetically sealed stainless steel gas tank
• SCADA compatible.
• Smart grid ready.

Application 

• Capacitor bank switching
• Transformer switching
• Motor switching
• Feeder switching

Market Segments

• Power plants
• Substation
• Industries
• Cement
• Mining
• Railways
• Airports
• Petrochemicals
• Automotive and more

Advantage

• Maintenance free and Compact design
• Environmentally safe
• Low civil cost
• High operating temperatures

RAILWAY BREAKER

Ratings

27.5kV/2000A/25kA

Type

Outdoor

Product Description

Megawin railway vacuum circuit breakers (VCB) and vacuum interrupters (VI) come with a well proven magnetic actuator mechanism and electronic controller that eliminates the number of moving parts, making them robust, reliable and essentially maintenance free.

Product Features

• Magnetic actuator mechanism tested 100,000 operations.
• Solid insulation, UV resistant.
• Vacuum interrupters are porcelain clad
• Designed for voltage classes of 25kV
• Fully type tested for E2 class
• Suitable for both structure & pole mounted applications
• Equipment tested for 250 kVp impulse and 95 kVrms power frequency withstand voltage
• Successfully cleared for line charging, cable charging, capacitor switching and out of phase breaking current

Advantages

• Robust and maintenance free design
• Higher operating life
• Easy to install
• Time proven, safe and reliable

Applications

• AC Transaction application
• Suitable for pole mounted application in metro railways
• Suitable for line charging, cable charging, capacitor switching and phase opposition application

Applicable standards

Complies with IEC 62271-100,IEC 60694,RDSO specification nos. TI/SPC/PSI/CB/0000 with A&C slip no.1-4, ETI/PII/167(9/97) with A&C slip No.1

LOAD BREAK SWITCH (LBS)

Ratings

• 12kV/630A/25kA
• 24kV/630A/25kA
• 36kV/630A/25kA

Type:

• Indoor and outdoor

Suitable For Lineup of Panels

Product Description

Megawin load break switches (disconnector switches) are switching devices used to switch electrical circuits in load operating state. They find usage in switchgear cabinets and MV switching stations of indoor and outdoor panel, kiosk and ring main units. Megawin Load Break Switch comes with optional earth switch, HRC fuses and live line indicators. Modular design allows easy and cost-effective maintenance

Product Features

• Compact, reliable and proven design
• Tripping initiation by fuses
• Mechanically interlocked earth switch
• Live line indicators for operator safety.

Application 

• Transformer protection
• Capacitor bank current switching

Advantages

• Light weight
• Robust construction with x operations
• Safe operations for operators

Applicable Standards

• IEC 62270-1, IS /IEC 62271-1
• IEC 62270-102, IS /IEC 62271-102
• IEC 62270-103, IS /IEC 62271-103
• IEC 62270-105, IS /IEC 62271-105

Megawin Switchgear Pvt. Ltd
Manufacturers of Vacuum Circuit Breakers
Narasothipatti, Salem,
Tamil Nadu – 636004

info@megawin.co.in

+91 8929599797

http://www.megawinswitchgear.com/

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