WFR-12~24 Product presentation 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 substation Distribution 400 kV 40-70 kV 130 kV 11/22 kV Transmission Main substation 400 V Transformer

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 * Requires 400 series bolted bushings ** 1 sec. ratings on request

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 Snap action or latched mechanism 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

De – with earting switch Direct cable connection Earthing switch with making capacity

Be – busbar earthing Earthing switch with making capacity

M - Metering Air insulated and factory assembled module 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 Fuses on VT primary (optional) 400series bushings for busbar connection Bottom cable entry available

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 de-rating.

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 Closed rooms 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 Rough and reliable mechanisms Minimum of moving parts High number of operations Latched snap action is availabe Mechanical interlocks - internally, not on the front covers - fuse compartment - cable compartment (option) - cable test compartment (option) True position indication Padlocking device C mod. F mod. V mod.

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 CF CFC CFF CCC CCF FCC CFFF CCFF CCVV

Typical application（2） CCCC CCCF CFFC CCCCC CCFFF CCCFF CFFFF CCCCF