Download ce-b36 metal clad - Casagrande Elettrocostruzioni SpA

MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
CE - B36 - C - en - REV.00 2011.9
CE-B Metal Clad switchboards
are designed for use in public
and industrial distribution system
up to 36kV for the operation and
protection of lines, generators,
transformers, motors, capacitor
banks. The switchboards are
composed combining the various
typical standard cubicles.
TYPICAL USES
MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
APPLICATION
MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
Utilities and Power Plants
• Power Stations
• Transformer stations
• Main and auxiliary switchboards
Industry
• Metallurgy
• Pulp and Paper
• Cement
• Chemical
• Rolling mills
• Automotive
• Petrochemical
STANDARD
• Oil and gas
CEI 17-6 Italian standard
Marine applications
IEC 62271-200 International standard
• Drilling platforms
IEC 60-298 (replaced by IEC 62271-200)
• Off-shore oil rigs
DPR 547 Italian accident prevention Standard
• Ferries and ships
IEC 60129 Earthing switches
IEC 60694 High voltage switchgear
Services
IEC 62271 Circuit breakers
• Hospitals
• Infrastructures
These switchboards have performed all relevant
tests carried out by qualified laboratories.
• Data center
Transports
• Airports
• Ports
• Railways
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CE - B36 - C - en - REV.00 2011.9
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MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
FEATURES
General Characteristics
Earthing
Easy inspection and maintenance:
According to the international standard IEC 62271-200
Circuit-breaker: earthing of circuit-breaker is ensured on
through easy access to the equipment in the various
the CE-B switchboards are classified for “loss of service
the whole isolating stroke by means of a sliding jaw type
compartments by hinged doors or removable bolted panels
continuity category” as LSC2B with partition class PM.
contact on the copper conductor which is directly connected
and through the isolation and withdrawal on truck of circuit-
The optional version CE-BA is also foreseen fully withstanding
with the earthing bus-bar.
breakers, VT, fuses.
to internal arc fault:
Components: all main components such as CTs, VTs, etc.,
• Internal arc classification (IAC)
are positively earthed.
• Accessibility type:
Easy installation and connection:
the
cubicles are factory assembled and tested before being
A (restricted to authorized personnel only)
Doors: are connected to the frame by a 25 mmq. cross
shipped to site, therefore they only need to be secured to
F (Front)
section flexible braids.
the floor, coupled together and connected to the external
L (Lateral)
Earthing bus-bar: the earthing bus-bar in copper with a
R ( Rear)
normal 350 mmq. cross section runs along the length of the
Mechanical characteristics
Enclosure: Under normal operation the degree of protection
is of IP 31 for metal enclosure and IP2X in the LV instrument
switchboard, thus ensuring maximum safety for personnel
and equipment.
circuits.
Personnel safety ensured by:
•positive earthing on the entire switchboard structure
•earthing of circuit-breaker frame throughout racking-in or
withdrawing operations;
compartment.
Access and limited overall dimensions:
The individual structures are made of die-bended galvanized
the overall dimensions are particularly restricted if compared
breaker truck movement;
sheet steel elements of no less than 2 mm thickness.
with the high performances achieved for the insulation level,
•metal shutters automatically operated during VTs truck
The external coloured panels are realized with carbon steel
rated busbars current and short-circuit current.
movement in it’s compartment;
painted with electrostatic epoxy powder, the standard
•metal shutters automatically operated during circuit
•insulating protections and coatings are available for live
colour is light grey RAL 7035 smooth (all RAL scale colours
Versatility and flexibility:
or specific colours can be realized on request). Standard
diagram can be realized to meet the most varied technical
•easy access to low voltage apparatus and control wirings
painting minimum thickness of
requirements. Special and customized adaptation units allow
without any risk of accidental contact with medium voltage
easy extension of existing switchboards even from supplied
parts;
by other suppliers or not jet in production.
•set of mechanical and electromechanical interlocks;
Standard routine factory tests:
•various signalling and control devices.
• Visual inspection and check.
60 +/- 10 microns is
guaranteed.
Structure: all structural parts are solidly fastened together by
service
any single line
reliability:
parts;
special screws ensuring a good electrical contact between
Maximum
the connected parts.
insulation of all live parts minimizes the occurrence of faults
No fire risk: metal partitions of compartments and use
• Cabling check.
Nuts and bolts used to assemble structure and enclosure
between phases or to earth. The various compartments of
of self-estinguishing insulating material prevent fires from
• Electrical sequence operations.
are galvanized and passivated with minimum thickness of
each cubicle are fully segregated and can, besides, be simply
spreading.
• Insulation test.
12 microns.
and rapidly inspected. As a matter of fact, equipment such as
• Mechanical sequence operations.
reinforced
circuit-breakers, instrument transformers and terminals are
readily accessible for inspection and maintenance purposes.
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MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
TECHNICAL DATA
SAFETY INTERLOCKS
Electrical Data
Rated voltage
kV
36
Rated power frequency withstand voltage (1min)
kV
70
Rated lightning impulse withstand voltage
kV
170
Rated frequency
Hz
50/60
Rated short-time withstand current (3 sec)
kA
31,5
Peak current
kA
80
Internal arc withstand current IAC-FLR (1sec)*
kA
31,5
Earthing switch
• Mechanical lock to prevent the manual opening of the
• Mechanical lock to prevent the earthing switch closing if the circuit-breaker is in connected position
shutters when the circuit breaker is removed from the
compartment. The shutters can only be operated by the
circuit breaker truck.
On the circuit-breaker
• Mechanical lock to prevent the connection or disconnection
of the circuit breaker when closed
• Mechanical protection (IP20) form live parts even with door
open is always maintained with circuit breaker in connected
and disconnected position.
• Mechanical lock to prevent the circuit breaker connection
when the earthing switch is in closed position
On the VT’s compartment (if present)
• Mechanical lock to prevent opening of the door when VTs
are in connected position.
Rated current
max. A
2500
Rated current with forced ventilation **
max. A
3150
Rated current with two breakers in parallel **
max. A
4000
• Mechanical lock to prevent the disconnection of auxiliary
• Mechanical lock to prevent the manual opening of the
connector with circuit breaker in connected position
shutters when the VTs are removed from the compartment.
The shutters can only be operated by the VTs truck.
Note
* Internal arc withstanding in option
** Type tested
Normal Service Conditions
Dimensions
Width (mm)
1000
Maximum ambient temperature
C°
+40
Height
2475
Minimum ambient temperature
C°
-5
Height (mm) - IAC
2925
Height
m a.s.l.
≤ 1000
Depth (mm)
2550
Maximum relative humidity
%
95
Depth (mm) - VTS
3150
Circuit-breaker
compartment
Busbar compartment
Cable feeder
compartment
For different conditions contact our offices.
Dimensions could be affected by
specific equipment and configuration.
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MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
H
CONSTRUCTION
W
A Instrument compartment
All the low voltage equipment can be housed in the
instrument compartment, which is usually placed above the
circuit-breaker compartment
connection with cables.
This compartment can contains the fixed or draw-out
version voltage transformers and the related fuses
D Busbar compartment
The draw-out version allows VTs and fuses replacement in
B Circuit-breaker compartment
This compartment contains the main bus-bars which are
safe conditions even with switchbord on voltage.
This compartment is designed to accommodate the circuit-
directly supported by the lower fixed isolating contacts
breaker, contactor or link complete of its withdrawable
of the circuit-breakers and isolator supports fixed on the
truck and all mechanical parts required for the extraction.
structure.
The device is provided with auxiliary switches for signalling
This compartment can be located in incoming or outgoing
feeder cubicles as well as in bus tie cubicles.
The device could be provided with auxiliary switches for
signalling the “racking-in” and “racked-out position.
E Wiring duct for interconnections
G Earthing switch
On the cubicle roof front side, a wiring duct is provided to hold
The unit can be equipped with Casagrande Elettrocostruzioni
C Cable feeder compartment
the auxiliary connections between the various cubicles and
“CE-SEZ” earthing switch. The switch is activated with an
The cable compartment is accessible from the rear of the
towards the external installation.
high speed rotating snap, sized to conduct the rated short
the “connected position” and “disconnected/test position”.
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Copper terminals are arranged and sized to allow easy
F Voltage transformer compartment
(VT compartment)
cubicle by removing the panel or by opening the eventual door.
CE - B36 - C - en - REV.00 2011.9
circuit making current when close to under load. The speed of
the snap action closing operation is independent of controls.
A manual switch operating lever is provided on the front of
the switchbord.
The device is provided with auxiliary switches for signalling
the open and closed positions.
H Gas exhaust duct (Optional)
The gas exhaust duct, positioned on the top of the cubicles,
collects and ejects outside the safety area the gas resulting
by the eventual internal arc fault.
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MEDIUM VOLTAGE
CE-B36 METAL CLAD
SWITCHBOARDS
VERSIONS AND
CONFIGURATIONS
TYPICAL UNITS
Optional
• Key lock permitting the key to be released with earthing
Special Versions
switch open and locked in open position
Environment
• Electromechanical lock to prevent closing of earthing switch
• For special environments and temperature
• Mechanical lock to allow door opening only if circuit breaker
• For indoor use with protection degree up to IP54
is in disconnected position
• For outdoor use in metal box up to IP56 or NEMA 4X
• Padlock facility on circuit breaker shutters in closed position
• Padlock facility to prevent circuit breaker connecting or
Connection
disconnecting movement
• Incoming/outgoing by cables form the TOP
• Padlock facility to prevent opening or closing of earthing
• Incoming/outgoing by bus duct form the TOP
switch
• Padlock facility on circuit breaker door
Options and accessories
Accessories
Available Locks
• Light or pressure device to limit internal arc fault duration
•Key locks permitting the key to be released with Circuit
• Circuit breaker trolley for handling when removed from the
Breaker locked in open positions
compartment
• Key locks permitting the key to be released with Circuit
•Handle for circuit breaker connecting or disconnecting
Breaker locked in disconnected position
movement
•Key locks permitting the key to be released with circuit
•Handle for earthng switch command
breaker door closed
•Key lock permitting the key to be released with earthing
switch closed and locked in closed position
Example of configuration
Outgoing feeder
Incoming
Bus-tie
Bus-riser
Incoming
Outgoing feeder
1000
1000
1000
1000
1000
1000
X
M
10
X
M
X
M
X
M
X
M
CE - B36 - C - en - REV.00 2011.9
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Headquarters and Factory:
via G. Rossini, 24
37060 Castel d’Azzano
(Verona) Italy
Tel. +39 045 8546511
Fax +39 045 8520214
E-mail: [email protected]
Production Branch:
Contrada Piana Z.I.
86019 Vinchiaturo
(Campobasso) Italy
Tel. +39 0874 340225
Fax +39 0874 340227
www.casagrande.vr.it