As sustainability becomes more and more important, this criterion has been taken as a starting point for the design in terms of production and for the entire service life of. As sustainability becomes more and more important, this criterion has been taken as a starting point for the design in terms of production and for the entire service life of the switchgear. Ring main unit is a compact, sealed and enclosed type of switchgear. Existing paragraph or section replacement paragraph or section replacement text. Al hamad is the leading manufacturing enterprise specialized in low voltage to medium voltage electrical products. Consult the manual supplied with the protection relay for a description of.
Mv gis ring main unit safering gas insulated switchgear. These are utilized for medium voltage power distribution. Package substation solutions integrated medium and low voltage power distribution cabinet and a fluid filled distribution transformer solution lucy electric sabre ring main unit or lucy electric trident frmu oil ring main unit option. Panels and its main components are manufactured in agreement with the following international standards certifications. The switchgear design is based on the existing safering portfolio, offering an advantage to the end users with the same user interface, footprint, spare parts and operation. Kyn4412 indoor type alternatingcurrent metalclad midset withdrawable switchgear is applicable for threephase power systems of ac50hz and 3. Gasinsulated ring main unit type safering air and compact switchgear type safeplus air. It is a complete solution to meet the needs of the energy, infrastructure and building industries. The extension transforms the rmu tobecome a 4way or a 5way respectively. Rm6 documents and downloads schneider electric global. Modular nonextensible ring switches are an ideal solution for making a switching point in the network. The switchgear is provided in several versions suitable for a. Trip alarm contact and mrbmanual reset button need to be purchased together. Xiria eaton south africa medium voltage switchgear.
China ring main unit manufacturer, supplier and factory. A single phase air insulated ring main unit and compact switchgear. New compact gas insulated ring main unit industrial solutions. Available in indoor ip41 format, these units can be easily extended. The numerous distribution substations requested a unified switching functionality that evolved into the ring main unit concept. Lucy switchgear has offices in both the uk and dubai.
The standardized rmu configurations, which are mostly required within a distribution network, can be extensible upon request. It also includes a protection device and a metering device. Ring main unit is used in a secondary distribution system. Safering 36 is a ring main unit for the secondary distribution network. It is available in 18 different configurations suitable for most switching applications within the range from 6 to 40. Serv12630id is a vacuum circuit breaker unit with 12kv rated voltage and 630a rated current, both sides. Ring main unit, switchgear unit, transformer, cable distribution box show. Maintenance of mv switchgear, transformers, ring main. You see, complete switchgear simply means, assembly of needed switching devices.
Abb safering range is one major contributor to this specialisation. Mv switchgear products find use in growing market for medium voltage switchgear in india, both for primary and secondary distribution segments. Power system protection college of engineering and. Tenders the electrical plant portion of this work saw ae installl a highvoltage hv room which feeds the project via one qrm quad ring main unit and trm tee ring main unit, with the three transformers located in the same. In 1975 the company launched its vacuum insulated switchgear and was acquired by. Rm6 gas insulated ring main unit schneider electric. A trading name of lucy electric uk ltd, lucy switchgear. Xgn1512 indoor type ac highvoltage sf6 ring main unit switchgear. Ac metalenclosed switchgear and controlgear for rated voltages above 1 kv and up to. Environmentallyfriendly ring main unit switchgear for application in 1224 kv medium voltage distribution networks. Download documents for ringmaster rn2d gas insulated ring main unit rmu for underground secondary distribution, for indoor and outdoor applications.
Safering is a ring main unit rmu for the secondary distribution network. Switchgear should be installed in a clean, dry, ventilated room suitable for electrical. Headquartered in abu dhabi uae, the company covers entire mena region and provide expert solutions in view of the local environment, requirements and necessities. Download documents for rm6 medium voltage ring main units up to 24kv. Maintiemain automatic transfer scheme rear access for load and incoming connections indoor or outdoor applications. The di2 system is composed of modular and compact systems of 24 and 36 kv. Two products one range abb safering is adapted to the needs in the immense utility distribution network.
Product catalogue sf insulated compact switchgear,type. Iec 62271200 highvoltage switchgear and controlgear part 200. Abb library is a web tool for searching for documents. Alongside, it also protects your secondary side transformer from the occasional transient currents. Most of this switchgear exists in version that are extensible on the right or on both sides, in order to provide for future development. Depending on your applications and loading conditons you can use a swicth fuse combination or a circuit breaker to protect the. In the case of low impedance, biased differential configurations that cater for different ratio cts, the arrangement can be energized from either one or two different sets of main current transformers. Distribution switchgear make up 3% of the total replacement value of the asset base and contributes to around % of the total operating expenditure. Sf6gas insulated ring main unit type safering 36 and sf6gas insulated compact switchgear type safeplus 36 36. The most unique specialisation is the development of the compact secondary switchgear. Rm6 medium voltage switchgear cubicles are perfectly suited for very simple.
Trimec rmu can be controlled completely with an feeder remote unit. The sld which will be similar to the one shown in figure 3. A complete switchgear means, assembly of required switching devices, protection device as well as metering device. The numerous public distribution substations requested a unified switching functionality which evolved into the ring main unit concept. Sf6 insulated vacuum circuit breakers with self powered relay having transformer protection, over current and earth fault. Compact switchgear systems fulfils customers mv application requirements. Secormu is a kind of sf6 gasinsulated metalenclosed switchgear, which use load break switch, load break switch combined with fuse, three position.
Differential protection, frame leakage protection the systems in which selectivity is relative are nonunit systems. Safering air is a ring main unit rmu for the secondary distribution network. The extended unit has a separatetank from the main unit. Ring main unit switchgear,high voltage switchgear,medium. Susol rmu is enable to install on medium voltage distribution network and. Safering is extendible and can be combined with safeplus. A wide variety of ring main unit switchgear options are available to you, such as 3. Pdf en 1224kv saferingsafeplus gas insulated ring main unit and compact switchgear. Abb has always taken an active part in this development. Traditional saferingsafeplus ring main units are well suited to the needs of customers looking for closed sf6 handling and a very low leakage rate. Ring main unit,rmu is a compact, enclosed and sealed type of switchgear used for medium voltage power distribution. With over 100 years experience in the power distribution industry lucy switchgear is at the cutting edge of ring main unit design and innovation. The rm6 is a compact unit combining all mv functional units to enable connection, supply and protection of transformers on an open ring or radial network. The switchgear and busbars are enclosed in a gastight chamber.
Gasinsulated ring main unit safering air abb group. Design, manufacture and of compact substation of 11kv volts, equipped with kva cast resin transformer, 4 way 11kv ring main unit. Operation of the hv ac system uo to and including 33kv. Ring main unit rmu introduction electrical concepts. The integral cable test points are accessed through a convenient interlocked cover at the front of the unit. Smart ring is a ring main unit switchgear for power distribution, recently developed by hm power. Ofv in europe and india, and the worlds first ring main unit falcon beta. Sabre panep the cutting edge of ring main unit technology lucy switchgear has over years experience within the power distribution industry. On this course we will concentrate on switchgear suitable for medium voltage systems up to 36kv. Difference between ring main unit and switchgear orecco. It is basically used for an uninterrupted power supply.
Uninterruptible power supply ups industrial automation and control. The series disconnector has three positions onisolatedearth select which can only be selected when circuit breaker is in the off position. A wide variety of sf6 ring main unit switchgear options are available to you, such as poles number, type. Abb has further extended the saferingsafeplus ring main unit rmu portfolio with safering air that uses dry air as an alternative, environmentally friendly insulation gas. Medium voltage mv sf6insulated ring main unit for secondary distribution up to 40. For example, kt denotes a twounit commontank ring main unit made of one load switch unit and one load switchfuse combined unit. Xiria switchgear is a new generation of environmentally friendly ring main unit switchgear for application in 1224 kv medium voltage distribution networks. The safering air portfolio is based on dry air technology as insulation medium. Tambo international airport ort 1012017 tender notice and invitation to bid t1. The rm6 is a compact unit combining all mv functional units to enable the connection, supply and protection of transformers on an open ring or radial network. Covers to use in a 3ring binder, slip handbook front cover into front pocket.