Transcript Vacuum circuit breaker

SF6 Gas Insulated Ring Main Unit
&Compact Switchgear
WFR-12~24
Product presentation
广州五合智能电气有限公司
GUANGZHOU F-UNITE SMART
ELECTRIC CO.,LTD
Secondary distribution
400 kV
Transmission
substation
Transformer
130 kV
40-70 kV
Main substation
400 V
Secondary
substation
11/22 kV
Distribution
substation
RMU in network
Applicable standards










IEC 60265 : Switching and operations
IEC 60420 : Switch-fuse co-operation
IEC 62271-200 : Alternating-current metal-enclosed
switchgear and controlgear for rated voltages above 1kV
and up to and including 52kV
IEC 62271-102 : High-voltage alternating current
disconnectors and earthing switches
IEC 62271-100 : High-voltage alternating current Circuit
breakers
GB3804: Alternating-current load switchgear for rated
voltages above 3.6kV and up to and including 40.5kV
GB1984: High-voltage alternating current Circuit breakers
GB1985:High-voltage alternating current disconnectors and
earthing switches
GB16927: Switch-fuse co-operation
GB3906:Alternating-current metal-enclosed switchgear and
controlgear for rated voltages above 3.6kV and up to and
including 40.5kV
RMU applications







Compact secondary substations
Wind power plants
Small industries
Buildings
Mining
Airports
Underground installations
RMU - technical data
Rated voltage
Rated current
Short circuit breaking current
Making capacity
Short circuit current 1 sec.
Short circuit current 3 sec.
C
F
V
Cable switch
Switch fuse
Vacuum circuit
breaker
12/15/17,5/24
630
12/15/17,5/24
200
limited by fuse
limited by fuse
52,5/52,5/40/40
12/15/17,5/24
200
21/21/16/16
**
21/21/16/16
* Requires 400 series bolted bushings
** 1 sec. ratings on request
21*/21*/16*/16*
RMU modules









C- cable switch
F-switch fuse disconnector
V-vacuum circuit breaker
Sl-busbar sectionaliser
Sv-with vacuum circuit breaker
D-direct cable connection
De-with earthing switch
Be-busbar earthing
M-metering
C - cable switch



Three position load break switch
Snap action or latched mechanism
Cable test bushings in front available
F – switch fuse disconnector








Switch fuse combination
Three phase fuse tripping
Mechanism pre-charged for tripping
Up and downstream dual earthing
switch
No jammed fuse covers - open by
handle
Fuse tripping in front - real blown
fuse indicator
Fully submersible - unique for switch
fuse
400 series cable bushings available
V – vacuum circuit breaker





630A or 200A vacuum circuit
breaker
Latched mechanism – close and
open coil
Separate isolator/earthing
switch
Protection as specified by our
customers
Tripping facilitated for a wide
range of relays
Sl – busbar sectionaliser





Three position load break switch
Interlocked earthing switch
Manual or motor operation
Only 325mm wide when placed
between other modules
Sv – with vacuum circuit breaker


630A vacuum circuit breaker
Separate isolator/earthing
switch
D – direct cable connection

Direct cable connection
De – with earting switch


Direct cable connection
Earthing switch with making
capacity
Be – busbar earthing


Busbar earthing
Earthing switch with making
capacity
M - Metering


Type tested with specific transformers

2 or 3 pcs DIN 42600 Narrow type
CT’s with ribs.

3 pcs. DIN 42600 Narrow type single
pole VT’s

A
Air insulated and factory assembled
module
Fuses on VT primary (optional)

400series bushings for busbar
connection

Bottom cable entry available
V
Switchgear Design (C)




Three position switch
Switch, disconnector,
earth
Arc quenching by SF6
gas
Rough and reliable with
a minimum of parts
Switchgear Design (F)






Fuse canisters isolated in gas
Whole fuse system in one
module to simplify layout
No climatic deterioration
Earthing on both sides simultaneous upstream and
downstream
Fuse cover interlock - no
hazardous access
Fuse solution – fully
submersible
Switchgear Design (V)








Vacuum circuit breaker
Vacuum tube from China
Interruption in vacuum
Insulation provided by gas
Reliable and durable
No consumable parts
Sealed for life
Separate earthing switch
Fused protection
 Switch fuse combination offers

optimal short circuit protection:
 Fast interruption
 Current limiting - reduces stress
 Cost efficient

Considerations:
 Fuses are consumables
 Availability of stock
 Transformer size

Fuse selection table supplied with each
switchgear - accounting for thermal derating.
Relays - Selfpowered








CT powered protection relay (no
external power supply necessary)
Economical
Easy adjustment
Perfect for large distribution
transformers
Delivery range:
Circutor MPRB 99: Easy to adjust, the
classic solution
WIC1: New flexible relay with several
characteristics including definite time
PR512: Relay with advanced earth fault
functions
Relays – feeder protection







Advanced protection
schemes
Possible use of sensors
Auxiliary power required
Delivery range:
Short circuit and earth
fault protection
Offers current and
voltage measurement
with combisensors
Others on request
Arc suppressor







In the rare event of arc-fault
3 phase earthing switch
Reacts on pressure
No fatal pressure increase
No arcing gases
No need for ventilation
All parts inside the tank

Superior solution for:
 Crowded areas

Closed rooms

Underground installations
Mechanism and interlocks



C mod.


Mechanical interlocks
- internally, not on the front covers
- fuse compartment
- cable compartment (option)
- cable test compartment (option)
True position indication

Padlocking device


F mod.



V mod.
Rough and reliable mechanisms
Minimum of moving parts
High number of operations
Latched snap action is availabe
Cable termination - bushings
Serie 600, bolted,
630A
Serie 200, bolted, 200A
Cable connection





All bushings - same height
Simplified installation:
 Front dismantle
 Cable cut one length
 Revolving
 Adjustable cable support
Double adapters (e.g.NKT)
and surge arresters fits
behind cable cover
Double front covers
available
Arc proof cable
compartment available
Remote control and monitoring
Integrated solution with main components:
 RTU211: 16DI, 8DO, 6AI, 24-110VDC
 Additional I/O: 16DI (option)
 Battery charger (110 or 220VAC/24VDC or
48VDC)
 Batteries 2x12VDC (20Ah)
 Communication devices
 V23 fixed line modem
 Dial up modem
 RS-232 for external devices
 Heater (optional)
 Surge arresters (aux supply and
communication interface)
Installation and maintenance










Compact design
Easy to install and connect
Open front cable entry
Commissioning - factory tested
Maintenance - on demand only
NO live parts exposed
Minimum number of parts
Fully sealed and screened unit
Virtually maintenance free
At site conditions decides
Production facilities


成套设施，一次完
成抽真空、氦气检
漏、充SF6气体多种
功能。
成套设施，一次编
程完气箱焊接功能。
Typical application（1）
DF
CFC
CF
CFF
CCC
CFFF
FCC
CCF
CCFF
CCVV
Typical application（2）
CCCC
CCCF
CFFC
CCCCC
CCFFF
CCCFF
CFFFF
CCCCF