Eaton RVU Series User manual

RVU SERIES 12-24kV
EMBEDDED POLE
VACUUM CIRCUIT BREAKER
www.ulusoyelektrik.com.tr

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Energizing a world
that demands more.
Powering business worldwide
As a global power management company, we help
customers worldwide manage the power needed for
buildings, aircraft, trucks, cars, machinery and businesses.
Eaton's innovative technologies help customers manage
electrical, hydraulic and mechanical power more reliably,
efficiently, safely and sustainably.
We provide integrated solutions that help make energy, in
all its forms, more practical and accessible.
With 2019 sales $21.4 billion, Eaton has approximately
95.000 employees around the world and sells products in
more than 175 countries.
Eaton.com

INDEX
INDEX
INDEX
Definition
Circuit Breaker’s Mechanism Main Components
Technical Characteristics
Drawing & Dimensions
Circuit Breaker Secondary Wiring Diagram
Manuel Operating Instructions
Warning and Recommendations
Circuit Breaker Storage and Packaging Dimensions
Probable Failure Table
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RVU 12-24kV VACUUM CIRCUIT BREAKER
DEFINITION
RVU Series 12-24kV Vacuum Circuit Breaker is a three-phase AC indoor breaker with 12-24kV rated voltage suitable for
air insulated switchgear and can be applied in controlling and protecting electrical equipment in industrial and mineral
enterprises, power plants and substations. Operation mechanism is installed laterally.
The product conforms to the IEC 62271-100 standard. Short circuit type tests are performed in KEMA High Power Laboratory
in the Netherlands. RVU series provide safe and reliable performance. The embedded poles of RVU have the technique of
ventilation and convection. Besides the vacuum interrupter has low resistance and high number of short circuit breaking.
AII of that reduce the power consumption and the temperature rising due to the longtime running of circuit breaker.
Under normal conditions the interrupter is in closed position.
Arcing is occured within the interrupter by withdrawing the
moving contact from stationary contact. This arc burns in the
metal vapor evaporated from local hot spots on the contact
surfaces. The metal vapour continually leaves the inter-contact
region and recondenses on the contact surfaces and surrounding
metal vapor condensation shield. The latter is usually isolated
from both contacts and serves to protect the glass or ceramic
envelope from vapor deposition. At current zero, vapor production
ceases and the original vacuum condition is rapidly approached.
The dielectric strength of the interrupter also increases, and the
circuit is interrupted.
2

USER MANUAL & SERVICE INSTRUCTIONS
1
1
2
3
4
6
5
7
3
5
2
12
8
13
14
4
6
7
Chasis for Pole Connection
Embedded Vacuum Poles
Motion Transfer Cam
Mechanism Compartment
Wheels
Connector (Plug)
Absorber
8
9
10
11
13
12
14
Mechanical Interlock
Counter
Closing Push Button
Opening Push Button
Spring Charge/ Discharge Signalling
Mechanic Charged Adapter
Circuit Breaker Position Indicator
11
9
10
CIRCUIT BREAKER MECHANISM’S MAIN COMPONENTS
3

RVU 12-24kV VACUUM CIRCUIT BREAKER
1- Spring Charge Motor
4- Auxiliary Contacts
2- Opening Coil
5- Anti-Pumping Relay
3- Closing Coil
6- Spring Charging Switch
7- Charging Gear 8- Counter
4
9 - Mechanical Interlock

USER MANUAL & SERVICE INSTRUCTIONS
12- Closing Spring11- Opening Spring
10- Mechanical Operation
Lever Hole
9 - Mechanical Interlock
5

RVU 12-24kV VACUUM CIRCUIT BREAKER
Type RVU12 RVU24
Standard IEC 62271-100
Rated Voltage 12kV 24kV
Power Freq. Withstand Test Voltage 28kV (1min) 50kV (1min)
Lightning Impulse Withstand 75kV peak 125kV peak
Rated Current 1250A
Rated Short Circuit Current (Isc) 25kA
Rated Short-Time Withstand Current 3 sec
Operating Sequence O-300msec-CO-3min-CO
Interrupter Vacuum
DC Component Max 40%
Cable Charging Breaking Current 31,5A
System Neutral Neutral earth or without earth
Out of Phase Breaking 6,25kA
Motor Supply Voltage 24-48-110-220VDC, 220VAC
Trip Coils Supply Voltage 24-48-110-220VDC, 220VAC
Mechanical Class M2
Working Temperature min: -25°C / max: +50°C
Interruption Medium Vacuum
Techncal Characterstcs
6

USER MANUAL & SERVICE INSTRUCTIONS
Drawings & Dimensions
7
*Dimensions are given in mm.

RVU 12-24kV VACUUM CIRCUIT BREAKER
CIRCUIT BREAKER SECONDARY WIRING DIAGRAM
8
VACUUM EMBEDDED CIRCUIT BREAKER CONNECTION DIAGRAM

USER MANUAL & SERVICE INSTRUCTIONS
MANUAL OPERATING INSTRUCTIONS
Put the lever for manual spring charging into the Mechanical Operation Lever Hole. Charge the
spring of mechanism by moving the lever clockwise. After the gear looses its force, spring charged
/ discharged signal will turn into “Spring Charged” position and the circuit breaker position
indicator will remain same as “O“ green.
In order to close the circuit breaker push the red closing button. The circuit breaker position
indicator will turn into “I“ (closed) position. After the closing operation spring charged / discharged
signal will turn into “Spring Discharged“ position and charging motor re-charge the closing spring
after closing operation to “Spring Charged“ position for other closing operations.
In order to open the circuit breaker, push the green opening button. The circuit breaker position
indicator will turn into “O“ (opened) position.
1- Charging The Mechanism
2- Closing Operation
2- Opening Operation
9

RVU 12-24kV VACUUM CIRCUIT BREAKER
Changing Coils:
Changing Keys:
Disconnect the electrical connections of coils. Make the bolts dismounted. Inside of coils should be dismounted, pull
outward. Put the new coil inside and screw the bolts. Control the coil by your hand if it works or not, then make the
electrical connections.
Dismount the bolts by using screwdriver. Pull and take off the key core. After jointing the new key, mount the bolts
and check them.
10

USER MANUAL & SERVICE INSTRUCTIONS
Changing Anti-Pumping Relay:
Changing Spring Charge Motor:
Unravel the anti-pumping relay’s link. Dislodge the anti-pumping relay by pulling. Press the new anti-pumping relay to
insert its place. Insert the link.
Pull down the track clip to take off motor protection fuse. Push the locks of the clip and remove the connections of
electrical cables. Remove bolts. After removing bolts, take the motor outside carefully. Put the new motor into its place
and make all connections again (install the bolts, connect the electrical cables and insert the motor protection fuse).
11

RVU 12-24kV VACUUM CIRCUIT BREAKER
WARNING AND RECOMMENDATIONS
CIRCUIT BREAKER STORAGE AND PACKAGING DIMENSIONS
• Provide all safety instructions during operation and in other cases.
• Check the circuit breakers when delivered.
• Change the parts which can be changed according to instructions.
• Compare the technical values with ordered values.
• Save the test reports which has been sent with circuit breaker.
• Keep the operation condition according to as requested.
• When the key is open position, the closing cannot be done. Do not force the by closing.
• Take care the mechanism and poles during the dispatch, mountage and operations to avoid any hitting.
• Never clean the poles by using the materials which have unsuitable insulation levels.
• Contact surfaces needs to be clean before making bar connections, with a oil free solvent or acetone.
• Take care the poles to be clean. Clean the contact surfaces with a cotton free material.
• Follow the operation orders when energizing the circuit breaker.
• In any failure, follow the Fault Table.
Keep circuit breaker away from any water and direct sunlight in an ambient temperature between -40°C to 50°C. The
circuit breaker is shipped in the open position ‘‘0’’ with the springs ‘‘discharged”. Store the circuit breakers in their
original packing. Following a long period of storage (more than a month in normal ambient conditions.), all insulated
parts shall be carefully cleaned from all dust by using a dry fabric before using.
12

USER MANUAL & SERVICE INSTRUCTIONS
Mechanism can not be charged by
spring charge motor
Electric motor
- The voltage level might be low at the
motor terminals. Correct the voltage level.
- The motor might be burned, must be
changed.
Charging motor
contact
- The contact might be out of service,
must be changed.
Motor protection
fuse automat - Automat might be taken, please check it.
Circuit Breaker does not make
closing Closing coil
- Check the coil wiring connections.
- The voltage might be low at coil
terminals.
- The coil might be burned, must be
changed.
- Relay settings might be wrong, please
check it.
Circuit Breaker does immediately
opening after closing
Mechanism - Mechanism might not be charged, please
check it.
Any opening
component
- The failure might continue because of
high voltage.
- Relay settings must be wrong, please
check it.
Circuit Breaker makes opening-
closing one after another
Anti-pumping
relay or opening
component
- Change the relay and make settings of
protection system again.
Circuit Breaker does not make
opening both remote and local Coil - Charge the mechanism by using lever,
then make opening.
Circuit Breaker is working but not
charging Charging prong
- Charging prong might be broken, please
check it.
- Check the reducer gear group; if the
failure still continues, call the technical
service.
Motor does not stop after charging Motor charging
contacts
- Motor charging contacts might be fault,
must be changed.
PROBABLE FAILURE TABLE
13

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May 2020
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