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RVAC-40.5
40.5kV Medium Voltage
MV Switchgear
Gas Insulated MV Switchgear
Automotive
Aerospace
Electrical Truck
Hydraulics
Automotive
Aerospace
Electrical Truck
Hydraulics
Powering business worldwide
Next generation
transportation
Eaton is driving the
development of new
technologies – from hybrid
drivetrains and emission control
systems to advanced engine
components – that reduce fuel
consumption and emissions in
trucks and cars.
Higher expectations We continue to expand our
aerospace solutions and
services to meet the needs of
new aviation platforms,
including the high-flying light jet
and very light jet markets.
Building on our strengths
Our hydraulics business
combines localised service and
support with an innovative
portfolio of fluid power
solutions to answer the needs
of global infrastructure projects,
including locks, canals and
dams.
Powering Greener Buildings
and Businesses
Eaton’s Electrical Group is a
leading provider of power
quality, distribution and control
solutions that increase energy
efficiency and improve power
quality, safety and reliability.
Our solutions offer a growing
portfolio of “green” products
and services, such as energy
audits and real-time energy
consumption monitoring.
Eaton’s Uninterruptible Power
Supplies (UPS), variable-speed
drives and lighting controls help
conserve energy and increase
efficiency.
Eaton delivers the power inside hundreds of products that are answering the demands of today’s fast changing world. We help our customers worldwide manage the power they need for buildings, aircraft, trucks, cars, machinery and entire businesses. And we do it in a way that consumes fewer resources.
1
MV switchgear technology
is in our DNA
Eaton’s range of
SF6 free switchgear
for Medium Voltage
Eaton Corporation is a worldwide leader in the
design, manufacture, and sale of safe, reliable
and high-performance medium voltage power
distribution equipment in accordance with IEC,
ANSI and GB / DL standards
Complete Global Medium Voltage Switchgear Solutions
Eaton, a premier leader in designing and manufacturing power
distribution and protection equipment in the electrical industry,
offers a comprehensive range of medium voltage (MV) solutions
to meet the needs of virtually every application. From products
that feature cutting-edge design that allow for easy access,
maintenance and space savings, to arc-resistant products that
enhance safety, Eaton’s medium voltage solutions provide a
variety of products for every need. Additionally, Eaton’s global
service network provides maximum customer support in all
regions of the world.
As one of the few completely vertically integrated and diversified
industrial manufacturers in the world, Eaton designs not only MV
assemblies, but also the key components that comprise the MV
solutions – from steel housing and circuitbreaker compartments
to vacuum interrupters, circuit breakers, bus systems and fuses.
Eaton’s MV heritage, strengthened by acquisitions such as
Westinghouse DCBU, Cutler Hammer, MEM and Holec, has
resulted in breakthrough MV technologies and numerous
international patents over the years.
Part of Eaton’s complete electrical PowerChain Solutions
– which help businesses minimize risks while realizing greater
reliability, cost efficiencies, capital utilization and safety –
Eaton’s medium voltage equipment meets all applicable
standards and certifications such as IEC, NEMA / ANSI, GB / DL,
UL, IEEE, KEMA and CSA.
When it comes to medium voltage solutions, you can trust the
one name with a long history of proven performance: Eaton.
2
RVAC
Ring Main Unit
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 dedicated
to designing and manufacturing high-quality power distribution
switchgear since 1942, with over 2 million switchgear operating
reliably over the world till now.
Based on the design concept of full insulation and fully sealed, all
primary parts within RVAC RMU are fully sealed inside the
stainless-steel main enclosure, protect to against condensation
and external contaminated environment; the protection degree of
the main tank body is up to IP67, equipped with Cooper’s IEC
separable connectors, which can provide effective
protection against accidental flood in rainy climate.
3
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
0.01% 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;
• Circuit breakers with relay protection designed for transformer
and line protections. And a self-powered relay optional as well.
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 IEC separable connectors is supplied, suitable for
long-term operation underwater or in other severe conditions.
Operation
• Complete design certified in accordance with IEC standards;
• Arc fault tested according IEC 62271-200;
• Quality assurance in accordance with ISO 9001;
• Touching safe and hermetically sealed primary enclosure;
4
5
Vacuum 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
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.
• 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 0.01% leakage rate ensure a 30 year service cycle;
• Non-extensible is standard busbar extensible is optional.
Main Construction
Load break switch
SF6 gas insulated system
• The load break switch applies advanced arc blowout coil technology, ensuring
good interruption performance for the switch;
• The working speed of switch’s moving contact depends on its operation mecha
nism; 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 can be added, to achieve remote control.
6
Magnetic
field analysis
Electric field
analysis
Gas motion
analysis
Mechanical
strength
analysis
Gas pressure
analysis
Mechanical
movement
analysis and
force analysis
3D simulation design analysis
softwares are applied during
R&D process, strengthening
design capacity, and thus
improving product reliability
greatly.
Product Features
RVAC is developed to be an economical and ecological user-friendly power distribution device of compact size, reliable
performance and flexible configuration, with the application of advanced R&D technical resources.
Computer simulation
design
Capacitive voltage detection
system for verification of
safe isolation from supply
Each panel type within the
RVAC family is equipped with a
standard three phase Voltage
Detection System for voltage
testing. The VDS shows the
operator if the panel is isolated
from supply or not.
Logical mechanical and
electrical interlocks prevent
incorrect operation
Within the RVAC design
misoperation by an operator is
prevented by using different
interlocks. The interlocks are
mechanical and electrical. For
example electrical and mechanical interlocks prevent operation of the change-over switch
when the circuit-breaker is
switched on. All mechanical
interlocks are constructed in
such a way that they directly
block the mechanism.
Only when the cable
compartment door is closed,
the device can be operated
to power-on position
Only when the switch is
operated to Earthing position,
the cable compartment door
can be opened in a normal way.
Only when the cable compartment door is closed completely,
a closing operation can be
conducted on the earthing
switch. After the earthing switch
is opened, the mains switch can
conduct closing operation to
complete power-on process.
Sealed enclosure design, to
effectively protect against
foreign objects
RVAC is designed by metal-enclosed to be not accessible
without specified tools.
Smooth contemporary
design
All compartments of the RVAC
panels are designed in such a
way that the system is safe to
touch from the outside. By
using a smooth and smart
design it is not possible for the
operator to injure himself by
moving parts or by parts that
stick out of the switchgear
when moving in front of the
switchgear.
Routine tests
Various prescribed routine
tests are carried out during the
production of the switchgear.
To assure quality, all processes
are in accordance with ISO
9001. This means that at every
stage of production the
components, circuit-breakers
and current transformers are
inspected for correct functionality. When the entire installation has been assembled, a
thorough visual inspection is
carried out, together with
mechanical, functional and
electrical checks.
Tested Internal Arc
performance
Eaton has always been focusing
on building consistently safe
switchgear devices for operators. The biggest potential risk
for operators is internal arcing
within the switchgear device.
Therefore, design engineers
have taken all necessary
simulations to reduce the
internal arc risk during product
design process.
Eaton supports the philosophy
that it is best to avoid internal arcs
than to cure, in line with the
relevant standard IEC 62271.
Within the RVAC design a double
prevention philosophy is used.
Firstly, the design is constructed in
such a way that an internal arc is
prevented. In the unlikely case
that an internal arc could occur,
the RVAC is equipped to provide
maximum safety to the operator,
and to control and minimise
damage to the rest of the
switchgear and room.
7
Features and benefits
Flexible solutions
• Reliable busbar extended design and interfaces reservered for future
project expansion
• Complete types of functional units
The benefit of a sealed for life tank
A “sealed for life” steel enclosure contains
all primary parts and driving mechanisms
• Maintenance free
• Tested Internal Arc performance
• IP68 tightness design for gas tank
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
Circuit
breaker panel
“V”
Metering
panel
“M”
Voltage
transformer panel
“PT”
Load break
switch panel
“K”
Direct
connect panel
”B”
8
Configuration information
Direct connect panel (Function B)
Load break switch panel (Function K)
Standard
Voltage presence indicator
Type C bushing with bottom cable channel
Padlockforcablecompartmentcover
SF6 pressure gauge
Bottom venting channel
Cable clamp and bracket
Options
Solid busbar connector
Arc absorber with top venting channel
Cable inspection window
Short circuit fault indicator
Currentmeter
Bottom plate
Top cable entry design
Standard
630A load break switch
SF6 pressure gauge
Voltage presence indicator
Reliable interlock
Operating handle
Cable clamp and bracket
Type C bushing with bottom cable channel
Bottom venting channel
Options
Solid busbar connector
Arc absorber with top venting channel
Motorization mechanism
Bottom plate
Cable inspection window
Short circuit fault indicator
Top cable entry design
9
Circuit breaker panel (Function V)
Standard
630A vacuum breaker
3-position disconnector
SF6 pressure gauge
Voltage presence indicator
Reliable interlock
Operating handle
Cable clamp and bracket
Type C bushing with bottom cable channel
Bottom venting channel
Options
Solid busbar connector
Arc absorber with top venting channel
Motorization mechanism
Top cable entry design
Cable inspection window
Short circuit fault indicator
Protection relay
Voltage transformer panel (Function PT)
Standard
Voltage presence indicator
Options
LV compartment
voltage transformer and cable
connection kits
Loadbreak switch for Kpt function
10
• PBD-150 is self-powered design by CTs, also optional with
external power supply(DC 48V or 24V).
• PBD-150 provides three-stage phase to phase overcurrent
protection, two stage earth grounding protection, multiple
IEC standard inverse curves to be selected. (50/50N, 51/51N).
• LCD display with Chinese and English language exchanging
selection, and window design with event-pop up, as well as
extremely friendly HMI.
• Device provides RS-485 communication port with Modbus
protocol support.
PBD-150 protection relay
Metering panel (Function M)
Standard
Electromagnetic lock (with live latch)
PT
PT protection fuse
CT
Meter
Voltage presence indicator
Options
Energy meter
Voltage loss meter
Temperature and humidity controller
11
Main Components
A device on all functional units makes it possible to check the
presence(or absence) of voltage in the cables. With the holes for
phase comparators.
Voltage indicator
The indicator is used for detecting and indicating ground fault and
short-circuit fault in corresponding cable sections. The indicator
light flashes with alarm when short-circuit fault or single-phase
ground fault occurs in the power distribution system.
Fault indicator
For connection of extruded polymeric cable to transformers,
switchgear, motors and other equipment with a premolded
screened separable connectors for XLPE insulated 1 or 3-core
cabled with aluminum or copper conductors.
Cooper Screened Separable Connectors
Extension interface
For future extension connected to another module RVAC.
Busbar connector and solid busbar
Type C bushing is optional on the top of the gas tank to connected
modular panels with busbar connector and solid busbar.
Connection mode
Insulation cap
When the cabinet is reserved busbar bushing for transformer on
the main busbar side, and the cable plug is not installed, you need
to use Insulation cap to protect the busbar bushing.
Voltage indicator
Fault indicator
12
RVAC Technical Data
General�
Rated voltage
Power frequency withstand voltage (1min)
Phase to phase/Phase to earth
Between isolating distance
Lightning impulse withstand voltage (BIL)
Phase to phase/Phase to earth
Between isolating distance
Rated frequency
Internal arc classification (IAC)
Degree of protection in service
Degree of protection with doors/covers open
Service continuity of the switchgear
Rated gas pressure (20℃ gauge)
Annual leakage
Busbar system
Rated normal current
Rated short-time withstand current
Rated peak withstand current
Load break switches panel
Rated normal current
Rated short-circuit making current
Rated short-time withstand current
Mechanical endurance class (Lood break switch)
Mechanical endurance class (Earthing switch)
Electrical endurance class (active load breaking capacity 630A)
Cable-charging breaking capacity
Circuit-breakers panel
Rated normal current
Rated breaking current
Rated short-circuit making current
Rated capacitive switching current class
Mechanical endurance class (Circuit-breakers)
Mechanical endurance class (Earthing switch)
Electrical endurance class
Rated short-time withstand current
Short-circuit making capacity of earthing switch
Mechanism type
For others, please contact local Eaton sales representative.
Item
kV
kV
kV
Hz
kA-s
Mpa
A
kA-s
kA
A
kA
kA-s
A
A
kA
kA
kA-s
Ratings
36/40.5
70/95
80/118
170/185
195/215
50
AFLR 25/1
IP41
IP2X
LSC2
0.04
≤0.01%
630
25-4
63
630
63
25-4
M2 5000
M1 5000
E3 100
21
630
25
63
C2 (50A)
M2 10000
M1 5000
E2
25-4
E2 5
O-0.3s-CO-180s-CO
IEC62271-1
IEC62271-103
IEC62271-102
IEC62271-200
IEC62271-100
IEEE693
Common specifications for alternating current switchgear and controlgear
High-voltage switches for rated voltages above 1kV up to and including 52 kV
High-voltage alternating current disconnectors and earthing switches
A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to including 52kV
High-voltage alternating-current circuit breakers
IEEE Recommended Practice for Seismic Design of Substations
RVAC designed to IEC standards
RVAC complies with the following standards
13
RVAC Outlines and Dimensions
PT
K V
M
1855
326
180 180
850
976
2120
450
2120
450
700
1855
326
180 180
850
976
1730
2120
2120 1730
356
1310
300 300
1855
1100 800 1625
180 180
850
976
1730
2120
14
Floor Plan
KKV block type
Side View
K K V
K/V 700mm
20
450 450 450
20
≥ 100 ≥ 100
30
1730 390
265
≥ 800
Basic floor plan
Front View ≥200 850
20
1730
End cover
plate
End cover
plate
220 300
350
300
175
350
175
300
150
150 150
80
K/V circuit
Cable type: 1×3 cores 630A
up to 300mm²
K/V circuit
Cable type: 3×1 cores 630A
up to 630mm²
350 350 350
450
50
410
450
410
450
410
350 350 350
300
850
161 220
Cable conduit hole
Pressure relief hole
16×26
450 300
125 125 125 125 125 125
3× 80
15
Floor Plan
KKV block type with arc absorbe
K K V
K/V 700mm
Side View
20
450 450 450
20
≥ 100 ≥ 100
≥ 200
≥ 200
430 850 30
1730 390
265
≥ 800
ARC Absorber
Basic floor plan
Front View
End cover
plate
End cover
plate
2300
300
350
300
175
350
175
300 150 150
80
Cable type: 1×3 cores 630A
up to 300mm²
K/V circuit
Cable type: 3×1 cores 630A
up to 630mm²
450
50
410
329
450
410
450
410
350 350 350
300
850 430
161 Cable conduit hole
16×26
450 300 100
3× 80
125 125 125 125 125 125
RVAC Series outdoor switching substation
Switching substation combined with indoor SF6 gas insulated RMU RVAC and outdoor enclosure.
Features for substation
• The enclosure material uses stainless steel or Zn-Al steel sheet
with painting, the steel thickness is not less than 2mm, has the
strong corrosion resistance; The loose parts are all metal sheet
parts and are welded / riveted / bolted with each other to
ensure
the stable structure and light weight and elegant appearance.
• The top cover is a water-proof clival structure with ventilation
outlet. The ventilation inlet is arranged in the lateral of enclosure
with removable dust-proof filter net and the outlet is arranged
at
the top of the enclosure hidden under the eaves. It makes air
convection from bottom to top.
• The cable inlets with sealed bottom plates are locked the
bottom of outdoor enclosure to prevent moisture from cable
channel into case body.
• The doors and lugs are sealed with sealing strips, the locks for
doors is rainproof. The limiting hook is installed on the door to
make door fix when the door is opened for maintenance.
• RMU inside enclosure is maintenance free design, which can
adapt to the harsh outdoor environment.
• With the automatic terminal module(RTU) and remote control/
Monitoring Unit to facilitate the implementation of more
extended functions.
• The outdoor enclosure’s dimension and color will defined by
project, the specific request may contact EATON beforehand.
• Key performance of outdoor switching sub-station ：
• Protection class: IP43(IP54 optional)
16
Eaton is a registered trademark
of Eaton Corporation.
All trademarks are property of their
respective owners.
© 2025 Eaton Corporation
All Rights Reserved
Printed in China
CHICA20200044_EN
September 2025
Eaton Corporation
No.3, Lane 280, Linhong Road,
Changning District,
Shanghai, China 200335
www.eaton.com.cn
Eaton is an intelligent power management company dedicated to
protecting the environment and improving the quality of life for people
everywhere. We make products for the data center, utility, industrial,
commercial, machine building, residential, aerospace and mobility
markets. We are guided by our commitment to do business right, to
operate sustainably and to help our customers manage power ─
today and well into the future. By capitalizing on the global growth
trends of electrification and digitalization, we’re helping to solve the
world’s most urgent power management challenges and building a
more sustainable society for people today and generations to come.
Founded in 1911, Eaton has continuously evolved to meet the
changing and expanding needs of our stakeholders. With revenues of
nearly $25 billion in 2024, the company serves customers in more
than 160 countries. Eaton entered the Chinese market in 1993 and
has grown significantly since then. In 2004, Eaton moved its Asia-Pacific headquarters from Hong Kong to Shanghai. Today, Eaton has nearly
8,000 employees and 19 manufacturing facilities in China.
For more information about Eaton China, visit www.eaton.com.cn
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