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Eaton medium-voltage switchgear provides centralised control and protection of medium-voltage power equipment and circuits in industrial, commercial and utility installations involving generators, motors, feeder circuits, and transmission and distribution lines.
The SF6 Gas Insulated RMU RVAC is a fully insulated, fully isolated electrical Ring Main Unit (RMU) developed for cable circuit applications. This RMU uses SF6 gas for insulation, which effectively minimizes the impact of harsh environments. With an excellent reputation, it is used in municipal electrical grids throughout India. Our commitment includes providing top-quality RMUs to contribute to the successful implementation of the Kochi Metro's infrastructure.
The development of current power system focuses on the usage of ecological resources. Low power loss, low maintenance spending, reliable performance, flexible configuration are required on the medium voltage switchgear. Due to its features such as long service life, compact size and recycling, Eaton RVAC ring main units have proved successful in terms of economy and ecology. It appears more important for Underground cabled power distribution network in improving its devices and other aspects, with rapid development of urbanization ring main units (RMU), as the major device for protection and segment isolation to ground cabled distribution network, are widely used in urban power grids, due to its safe and reliable performance, compact and superior cost effectiveness.
Eaton as the leader in the field of distribution switchgear has Lean to designing and manufacture high-quality power distribution switchgear since 1942, with over 2 million switchgear operating reliably over the world till now
RVAC Ring Main Unit Construction Feature
Smart grid readiness
Designed to integrate solutions for sensing, monitoring and remote control for feeder automation and load management purposes.
Personal safety
- Logical mechanical and electrical interlocks
- Complete enclosure earthing, to ensure zero potential for interface
- Compartments protected against penetration of objects
- Capacitive voltage detection system for verification of safe isolation from supply
- Feeder earthing by means of make-proof earthing switch.
Environmental-friendly concept
- Low power loss, low maintenance spending, ensuring more reasonable cost investment
- Only reusable and/or recyclable materials can be used to do the most compact design
- In normal working conditions, gas leakage rate of lower than 0.05% per year ensures more than 30 years life-cycle
- Without gas work on site through installation, operation, extension, and replacement of the product.
User friendly
- Cable connection and user interfaces for operation on the same front side of the panel
- Ergonomic cable connection height
- A customized low voltage compartment is optional
- Clear and simple straightforward operation panels
Modular design and flexible configuration
- Both multi-functions in one tank solution and individual panel can be freely combined and extended, to satisfy demands of different customers
- Non-extensible and both side extensible design suit for your requirements.
- Flexible extension of unit modules on site, easy to build medium voltage transformer substations according to different requirements
- Two options are available for transformer and line protections: load break switch-fuse combination units and circuit breakers with relay protection.
All-weather and high adaptability to environment
- SF6 gas tank is made of stainless steel plates, with anti-rust painting treatment on the surface, to protect against salt spray, humidity, dirt and temperature, and to ensure durable nice appearance
- COOPER pre-fabricated shielding touchable cable terminal is supplied, suitable for long-term operation underwater or in other severe conditions.
Operation
- Complete design certified in accordance with GB / DL and IEC standards
- Arc fault tested according GB3906 / IEC 62271-200
- Quality assurance in accordance with ISO 9001
- Touching safe and hermetically sealed primary enclosure
- Gas tank’s zero gauge voltage withstand (1min) can reach power frequency withstand voltage.
Main Construction
Vacuum circuit breaker technology features
- Eaton has an unsurpassed leadership in vacuum technology supported by a strong heritage of innovation from companies such as Westinghouse and Holec
- Pioneers in vacuum technology for over 90 years. First vacuum interrupter supplied at 15kV-12kA in 1967
- Eaton was the first one to develop and patent copper-chromium alloy content for contacts and center shields • Our vacuum interrupters for contactor applications can perform up to 2.5 million mechanical operations • More than 5 million units delivered worldwide, operating safely and reliably in all types of networks, medium voltage applications and environments
- High end certified supplier to almost all major electrical manufacturers worldwide
SF6 gas insulated system
- All primary high-voltage components are completely enclosed in SF6 gas tank, free from environment impact, thus ensuring fully insulation and maintenance-free;
- SF6 gas tank is made of high-quality stainless steel materials, free from influence of salt spray, humidity, dirt and temperature, ensuring a durable nice outlook;
- With IP67 protection degree, can reliably prevent from flood immersion in summer;
- Advance gas shielded welding as well as a sealing pressure system of less than 0.05% leakage rate ensure a 30 year service cycle;
- Non-extensible is standard busbar extensible is optional.
Load break switch
The load break switch is a 3-position switch, with Close, Open and earthing position. When in Open position, the moving blade has sufficient insulation distance. An operating handle can be used to make close-open operations on load break switch and earthing switch. There are mechanical interlocks between the load break switch and the earthing switch.
- The load break switch applies metal deionizing arc suppress technology, ensuring good interruption performance for the switch;
- The working speed of switch’s moving contact depends on its operation mechanism; and the open-close speed of the switch will not be influenced by operators;
- When moving from closing to opening, the load break switch depends on moving contact speed and arc suppress devices simultaneously, to suppress arc and break current;
- The spring operation mechanism with an operating handle to complete closing and opening operations. Motorization module and opening coil can be added, to achieve remote control
Features and benefits
The benefit of a sealed for life tank
A “sealed for life” steel enclosure contains all primary parts and driving mechanisms
- Maintenance free
- Internal arc proof
- Protection degree up to IP67 for prevention of summer floods
The benefit of a compact design
- Minimal floor space
- Low building costs
- Easy to install
Computer simulation design
3D simulation design analysis softwares are applied during R&D process to strengthen design capacity, thus improving product reliability greatly.
- Electric field analysis
- Magnetic field analysis
- Gas pressure and motion analysis
- Mechanical strength analysis
- Mechanical movement (speed and force) analysis
- Finite element analysis
Smart grid readiness
Automation upgrading
- Remote close/open
- Auxiliary contacts for each position local or remote indications
- Measuring CT and current signal
Option
- Trip indicator with auxiliary contacts
- Fault indicator
- Current meter
Flexible solutions
- Reliable busbar extended design and interfaces reserved for future project expansion
- Complete types of functional unit
XIRIA Plus Compact and environmentally friendly Ring Main Unit
XIRIA Plus Solid insulated RMU for smart grid application
XIRIA Plus is the name of Eaton's new solid insulated RMU for smart grid applications. The system is characterized by its high level of operational safety and is suitable for applications up to 12kV.
The XIRIA Plus RMU is designed around Eaton's proven vacuum interrupters, which require no maintenance and are certified for 10,000 operation cycles.
All live parts in the available panels are single pole insulated. The used materials are shaped specifically to provide optimum insulation combined with excellent thermal characteristics. In addition, the insulation is configured to provide effective control over electric fields around the used components, thereby minimizing any risk of internal arcing.
Within the XIRIA Plus panels both the primary parts and the mechanisms are housed in a fully enclosed housing which protects the whole system against environmental influences. The use of vacuum interrupters and solid insulation means that the XIRIA Plus is environmentally friendly. These technologies ensure that this system is a conservational alternative to switchgear systems using Sulfur Hexafluoride (SF6) gas for insulation. The cost of ownership is also significantly reduced, as no regular testing of gas pressure or other routine maintenance is needed and there is no high end-of-life cost associated with ultimately disposing of the equipment.
With a compact design and a provision for cable connection from the front, the XIRIA Plus system is economical in its use of valuable floor space, and easy to accommodate in even the most restricted environments.
When it comes to the safety of the operating personnel the XIRIA Plus design leaves nothing to chance.
All parts are fully enclosed by an internal arc tested safe metal housing.
The panels in the system are provided with direct visible indication of the integrated earthing and ON/OFF-position by means of inspection windows in the front.
Environmentally friendly
Like all Eaton medium voltage switchgear, XIRIA Plus is designed to be an environmentally friendly product throughout the whole value chain.
One of the key strategic initiatives of Eaton is to provide environmentally friendly products. Eaton achieves this by looking at the total product chain, from design to dismantling and recycling. The optimal situation is that for each phase there is no damage to the environment and at the end, all materials can be re-used again in the same product (the Cradle-to-Cradle principle). The product chain can be divided into four main blocks. These blocks are the design (materials used) of the product, the assembly of the product, the usage phase of the product and finally the dismantling of the product.
XIRIA Plus Ring Main Unit Construction Feature
Smart grid readiness
Designed to integrate solutions for sensing, monitoring and remote control for feeder automation and load management purposes.
Safe in use
- Visible isolation by means of inspection windows in the front
- Compartments protected against penetration of objects
- Capacitive voltage detection system for verification of safe isolation from supply
- Logical mechanical and electrical interlocks prevent maloperation
Environmentally friendly
- Minimized number of components
- Environmental-friendly design with respect to the materials used
- No use of SF6-gas for switching and insulation
- Minimal number of transition points in primary design enable low energy loss during operation
- Only re-usable and / or recyclable materials used
User friendly
- Cable connection and user interfaces for operation on the same front side of the panel
- Ergonomic cable connection height
- A customized low voltage compartment is optional
- Clear and simple straightforward operation panels
Low total cost of ownership
- Low initial costs due to:
- Panels with only 350mm or 450mm width depending on function
- Cable connection from the front / wall standing arrangement
No costs during service due to:
- Robust design with minimum number of parts (routine tested in factory)
- Long-life solid insulated components as insulation medium
- Maintenance free vacuum circuit-breaker and load break switch
- Primary parts and mechanism installed in a fully sealed for life enclosed housing
- No SF6 pressure checks
Low end of life disposal cost due to:
- Vacuum switching technology
- Solid insulation with air as isolating medium
- Recycling or re-use of materials
Operation
- Complete design certified in accordance with GB standards
- Arc fault tested according GB 3906-2006
- Quality assurance in accordance with ISO 9001
- Single pole insulated primary parts within one compartment
- Primary parts and mechanism in sealed for life fully enclosed housing
- Configurations up to 6 functions in one tank
- Field extensible for projects requiring more than six functions
Main construction
Vacuum Circuit breaker technology features
- Eaton has an unsurpassed leadership in vacuum technology supported by a strong heritage of innovation from companies such as Westinghouse and Holec
- Pioneers in vacuum technology for over 90 years. First vacuum interrupter supplied at 15kV-12kA in 1967
- Eaton was the first one to develop and patent copper-chromium alloy content for contacts and center shields
- Our vacuum interrupters for contactor applications can perform up to 2.5 million mechanical operations
- More than 5 million units delivered worldwide, operating safely and reliably in all types of networks, medium voltage applications and environments
- High end certified supplier to almost all major electrical manufacturers worldwide
Solid insulation system
- More than 60 years experience in solid insulation technology with hundreds of thousands of functions successfully operating worldwide in all kinds of environment without any ageing concern
- Full encapsulation capability in the 1990’s
- High thermal conductivity
- High electrical resistivity
- Low moisture absorption
- High creepage current resistance
- High mechanical strength
- Optimized electrical field control
- Fully insulated busbars to prevent any phase to phase and phases to earth faults
- Optional extensible busbars
3-position disconnector
All panels are equipped with a disconnector positioned in the same sealed for life enclosure as the circuit-breaker. The disconnector consists of three shafts connected to the busbars or earthing points. Since it is mechanically interlocked the disconnector can only be operated when the circuit breaker is in the open position.
- Manual-operated switch with 3-position (service / isolated / earthed)
- Maintenance free
- Housed in sealed for life enclosure
- Auxiliary contacts for service / isolated / earthed
- Position indication by means of inspection windows and mechanical indicators
- Mechanically interlocked with the vacuum circuit-breaker
Features and benefits
The benefit of a sealed for life tank
A “sealed for life” steel enclosure contains all primary parts and driving mechanisms
- Maintenance free
- Internal arc proof
The benefit of a compact design
- Minimal floor space
- Low building costs
- Easy to install
- Up to 6 feeders in one tank
Extensibility
- Safe and reliable field extensible solution for projects requiring more than six functions
- Epoxy extensible busbar bushing
- Single phase insulating
- Self-pluggable contacts design
- Easy to install on site
Smart grid readiness
- Automation upgrading
- Remote close/open
- Auxiliary contacts for each position local or remote indications
- Measuring CT and current signal
Option
- Trip indicator with auxiliary contacts
- Fault indicator
- Current meter
Product range for highest flexibility in use
- Flexible combination to build configurations up to 6 functions in one tank
- Any combination of load break switches and circuit-breakers can be placed in a 2- 3- 4- 5 or 6 panel unit
The SF6 Gas Insulated RMU RVAC is a fully insulated, fully isolated electrical Ring Main Unit (RMU) developed for cable circuit applications. This RMU uses SF6 gas for insulation, which effectively minimizes the impact of harsh environments. With an excellent reputation, it is used in municipal electrical grids throughout India. Our commitment includes providing top-quality RMUs to contribute to the successful implementation of the Kochi Metro's infrastructure.
The development of current power system focuses on the usage of ecological resources. Low power loss, low maintenance spending, reliable performance, flexible configuration are required on the medium voltage switchgear. Due to its features such as long service life, compact size and recycling, Eaton RVAC ring main units have proved successful in terms of economy and ecology. It appears more important for Underground cabled power distribution network in improving its devices and other aspects, with rapid development of urbanization ring main units (RMU), as the major device for protection and segment isolation to ground cabled distribution network, are widely used in urban power grids, due to its safe and reliable performance, compact and superior cost effectiveness.
Eaton as the leader in the field of distribution switchgear has Lean to designing and manufacture high-quality power distribution switchgear since 1942, with over 2 million switchgear operating reliably over the world till now
RVAC Ring Main Unit Construction Feature
Smart grid readiness
Designed to integrate solutions for sensing, monitoring and remote control for feeder automation and load management purposes.
Personal safety
- Logical mechanical and electrical interlocks
- Complete enclosure earthing, to ensure zero potential for interface
- Compartments protected against penetration of objects
- Capacitive voltage detection system for verification of safe isolation from supply
- Feeder earthing by means of make-proof earthing switch.
Environmental-friendly concept
- Low power loss, low maintenance spending, ensuring more reasonable cost investment
- Only reusable and/or recyclable materials can be used to do the most compact design
- In normal working conditions, gas leakage rate of lower than 0.05% per year ensures more than 30 years life-cycle
- Without gas work on site through installation, operation, extension, and replacement of the product.
User friendly
- Cable connection and user interfaces for operation on the same front side of the panel
- Ergonomic cable connection height
- A customized low voltage compartment is optional
- Clear and simple straightforward operation panels
Modular design and flexible configuration
- Both multi-functions in one tank solution and individual panel can be freely combined and extended, to satisfy demands of different customers
- Non-extensible and both side extensible design suit for your requirements.
- Flexible extension of unit modules on site, easy to build medium voltage transformer substations according to different requirements
- Two options are available for transformer and line protections: load break switch-fuse combination units and circuit breakers with relay protection.
All-weather and high adaptability to environment
- SF6 gas tank is made of stainless steel plates, with anti-rust painting treatment on the surface, to protect against salt spray, humidity, dirt and temperature, and to ensure durable nice appearance
- COOPER pre-fabricated shielding touchable cable terminal is supplied, suitable for long-term operation underwater or in other severe conditions.
Operation
- Complete design certified in accordance with GB / DL and IEC standards
- Arc fault tested according GB3906 / IEC 62271-200
- Quality assurance in accordance with ISO 9001
- Touching safe and hermetically sealed primary enclosure
- Gas tank’s zero gauge voltage withstand (1min) can reach power frequency withstand voltage.
Main Construction
Vacuum circuit breaker technology features
- Eaton has an unsurpassed leadership in vacuum technology supported by a strong heritage of innovation from companies such as Westinghouse and Holec
- Pioneers in vacuum technology for over 90 years. First vacuum interrupter supplied at 15kV-12kA in 1967
- Eaton was the first one to develop and patent copper-chromium alloy content for contacts and center shields • Our vacuum interrupters for contactor applications can perform up to 2.5 million mechanical operations • More than 5 million units delivered worldwide, operating safely and reliably in all types of networks, medium voltage applications and environments
- High end certified supplier to almost all major electrical manufacturers worldwide
SF6 gas insulated system
- All primary high-voltage components are completely enclosed in SF6 gas tank, free from environment impact, thus ensuring fully insulation and maintenance-free;
- SF6 gas tank is made of high-quality stainless steel materials, free from influence of salt spray, humidity, dirt and temperature, ensuring a durable nice outlook;
- With IP67 protection degree, can reliably prevent from flood immersion in summer;
- Advance gas shielded welding as well as a sealing pressure system of less than 0.05% leakage rate ensure a 30 year service cycle;
- Non-extensible is standard busbar extensible is optional.
Load break switch
The load break switch is a 3-position switch, with Close, Open and earthing position. When in Open position, the moving blade has sufficient insulation distance. An operating handle can be used to make close-open operations on load break switch and earthing switch. There are mechanical interlocks between the load break switch and the earthing switch.
- The load break switch applies metal deionizing arc suppress technology, ensuring good interruption performance for the switch;
- The working speed of switch’s moving contact depends on its operation mechanism; and the open-close speed of the switch will not be influenced by operators;
- When moving from closing to opening, the load break switch depends on moving contact speed and arc suppress devices simultaneously, to suppress arc and break current;
- The spring operation mechanism with an operating handle to complete closing and opening operations. Motorization module and opening coil can be added, to achieve remote control
Features and benefits
The benefit of a sealed for life tank
A “sealed for life” steel enclosure contains all primary parts and driving mechanisms
- Maintenance free
- Internal arc proof
- Protection degree up to IP67 for prevention of summer floods
The benefit of a compact design
- Minimal floor space
- Low building costs
- Easy to install
Computer simulation design
3D simulation design analysis softwares are applied during R&D process to strengthen design capacity, thus improving product reliability greatly.
- Electric field analysis
- Magnetic field analysis
- Gas pressure and motion analysis
- Mechanical strength analysis
- Mechanical movement (speed and force) analysis
- Finite element analysis
Smart grid readiness
Automation upgrading
- Remote close/open
- Auxiliary contacts for each position local or remote indications
- Measuring CT and current signal
Option
- Trip indicator with auxiliary contacts
- Fault indicator
- Current meter
Flexible solutions
- Reliable busbar extended design and interfaces reserved for future project expansion
- Complete types of functional unit
XIRIA Plus Compact and environmentally friendly ring main unit
XIRIA Plus Solid insulated RMU for smart grid application
XIRIA Plus is the name of Eaton's new solid insulated RMU for smart grid applications. The system is characterized by its high level of operational safety and is suitable for applications up to 12kV.
The XIRIA Plus RMU is designed around Eaton's proven vacuum interrupters, which require no maintenance and are certified for 10,000 operation cycles.
All live parts in the available panels are single pole insulated. The used materials are shaped specifically to provide optimum insulation combined with excellent thermal characteristics. In addition, the insulation is configured to provide effective control over electric fields around the used components, thereby minimizing any risk of internal arcing.
Within the XIRIA Plus panels both the primary parts and the mechanisms are housed in a fully enclosed housing which protects the whole system against environmental influences. The use of vacuum interrupters and solid insulation means that the XIRIA Plus is environmentally friendly. These technologies ensure that this system is a conservational alternative to switchgear systems using Sulfur Hexafluoride (SF6) gas for insulation. The cost of ownership is also significantly reduced, as no regular testing of gas pressure or other routine maintenance is needed and there is no high end-of-life cost associated with ultimately disposing of the equipment.
With a compact design and a provision for cable connection from the front, the XIRIA Plus system is economical in its use of valuable floor space, and easy to accommodate in even the most restricted environments.
When it comes to the safety of the operating personnel the XIRIA Plus design leaves nothing to chance.
All parts are fully enclosed by an internal arc tested safe metal housing.
The panels in the system are provided with direct visible indication of the integrated earthing and ON/OFF-position by means of inspection windows in the front.
Environmentally friendly
Like all Eaton medium voltage switchgear, XIRIA Plus is designed to be an environmentally friendly product throughout the whole value chain.
One of the key strategic initiatives of Eaton is to provide environmentally friendly products. Eaton achieves this by looking at the total product chain, from design to dismantling and recycling. The optimal situation is that for each phase there is no damage to the environment and at the end, all materials can be re-used again in the same product (the Cradle-to-Cradle principle). The product chain can be divided into four main blocks. These blocks are the design (materials used) of the product, the assembly of the product, the usage phase of the product and finally the dismantling of the product.
XIRIA Plus Ring Main Unit Construction Feature
Smart grid readiness
Designed to integrate solutions for sensing, monitoring and remote control for feeder automation and load management purposes.
Safe in use
- Visible isolation by means of inspection windows in the front
- Compartments protected against penetration of objects
- Capacitive voltage detection system for verification of safe isolation from supply
- Logical mechanical and electrical interlocks prevent maloperation
Environmentally friendly
- Minimized number of components
- Environmental-friendly design with respect to the materials used
- No use of SF6-gas for switching and insulation
- Minimal number of transition points in primary design enable low energy loss during operation
- Only re-usable and / or recyclable materials used
User friendly
- Cable connection and user interfaces for operation on the same front side of the panel
- Ergonomic cable connection height
- A customized low voltage compartment is optional
- Clear and simple straightforward operation panels
Low total cost of ownership
- Low initial costs due to:
- Panels with only 350mm or 450mm width depending on function
- Cable connection from the front / wall standing arrangement
No costs during service due to:
- Robust design with minimum number of parts (routine tested in factory)
- Long-life solid insulated components as insulation medium
- Maintenance free vacuum circuit-breaker and load break switch
- Primary parts and mechanism installed in a fully sealed for life enclosed housing
- No SF6 pressure checks
Low end of life disposal cost due to:
- Vacuum switching technology
- Solid insulation with air as isolating medium
- Recycling or re-use of materials
Operation
- Complete design certified in accordance with GB standards
- Arc fault tested according GB 3906-2006
- Quality assurance in accordance with ISO 9001
- Single pole insulated primary parts within one compartment
- Primary parts and mechanism in sealed for life fully enclosed housing
- Configurations up to 6 functions in one tank
- Field extensible for projects requiring more than six functions
Main construction
Vacuum Circuit breaker technology features
- Eaton has an unsurpassed leadership in vacuum technology supported by a strong heritage of innovation from companies such as Westinghouse and Holec
- Pioneers in vacuum technology for over 90 years. First vacuum interrupter supplied at 15kV-12kA in 1967
- Eaton was the first one to develop and patent copper-chromium alloy content for contacts and center shields
- Our vacuum interrupters for contactor applications can perform up to 2.5 million mechanical operations
- More than 5 million units delivered worldwide, operating safely and reliably in all types of networks, medium voltage applications and environments
- High end certified supplier to almost all major electrical manufacturers worldwide
Solid insulation system
- More than 60 years experience in solid insulation technology with hundreds of thousands of functions successfully operating worldwide in all kinds of environment without any ageing concern
- Full encapsulation capability in the 1990’s
- High thermal conductivity
- High electrical resistivity
- Low moisture absorption
- High creepage current resistance
- High mechanical strength
- Optimized electrical field control
- Fully insulated busbars to prevent any phase to phase and phases to earth faults
- Optional extensible busbars
3-position disconnector
All panels are equipped with a disconnector positioned in the same sealed for life enclosure as the circuit-breaker. The disconnector consists of three shafts connected to the busbars or earthing points. Since it is mechanically interlocked the disconnector can only be operated when the circuit breaker is in the open position.
- Manual-operated switch with 3-position (service / isolated / earthed)
- Maintenance free
- Housed in sealed for life enclosure
- Auxiliary contacts for service / isolated / earthed
- Position indication by means of inspection windows and mechanical indicators
- Mechanically interlocked with the vacuum circuit-breaker
Features and benefits
The benefit of a sealed for life tank
A “sealed for life” steel enclosure contains all primary parts and driving mechanisms
- Maintenance free
- Internal arc proof
The benefit of a compact design
- Minimal floor space
- Low building costs
- Easy to install
- Up to 6 feeders in one tank
Extensibility
- Safe and reliable field extensible solution for projects requiring more than six functions
- Epoxy extensible busbar bushing
- Single phase insulating
- Self-pluggable contacts design
- Easy to install on site
Smart grid readiness
- Automation upgrading
- Remote close/open
- Auxiliary contacts for each position local or remote indications
- Measuring CT and current signal
Option
- Trip indicator with auxiliary contacts
- Fault indicator
- Current meter
Product range for highest flexibility in use
- Flexible combination to build configurations up to 6 functions in one tank
- Any combination of load break switches and circuit-breakers can be placed in a 2- 3- 4- 5 or 6 panel unit
Contact
Submit A Request
Our customer care center is available 24 hours a day, 365 days a year to answer your Jalkee products and services-related inquiries. Contact us today!
Office Address
- Smart Trade City Kottakkal, Malappuram, Kerala, India - 676503
- +91 8592993362
- sales.jalk@gmail.com
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