DFW10-12 Outdoor High Voltage Ring Main Unit (RMU)

Model meaning

First and second fusion standardized ring cage product introduction

The outer box of the metal material should be treated with anti-corrosion coating process,the coating is uniform and the thickness is consistent,the coating should have a firm adhesion to ensure that there can be no obvious rust spots in 20 years,and the box shell has an anti-sticker function.

The color of the ring cage is National network green,the CMYK value is C100M5Y50K40,and the PANTONG 3292C.If there are special requirements,it should be kept in harmony with the surrounding cultural and geographical environment.The surface of the case should have obvious reflective warning signs to ensure that the color will not fade for 15 years.

The outer box should be set up with obvious signs, such as the name of the equipment, electrical hazards, etc.Signs and signs shall be made in accordance with the provisions of GDW 742.

The distribution automation terminal in the ring cage includes centralized DTU and distributed DTU. Centralized DTU and distributed DTU shall meet their respective technical requirements. The outdoor ring cage reserved for the automation interface should also reserve an independent distribution automation unit installation space, which is generally placed according to the DTU shielded vertical, and the reserved width space is not less than 600mm.The DC power supply system is installed in the box, and secondary wiring is completed.

Primary and secondary fusion standardized ring cage metal material dimensions:4 way:box width of 3200mm.6 channels:The box width is 4000mm . 

The ring cage depth is 1150mm.Height≤2300mm,non-metallic ring cage height≤2500mm.The door opening Angle is not less than 90° .

Overview

With the continuous development and progress of society, great changes have taken place in china's urban power grid, and most cities have formed or are forming a large number of load-intensive areas, in the past, the power supply from the substation 12kV line (or branch line) to the direct user has been difficult to meet the requirements of urban development. Therefore, a new power supply method is produced by opening and closing the power supply to the user. However, with the intensification of urban densification, some of the original civil openings have been restricted by land and urban planning, so a more advanced and practical outdoor high-pressure ring cage (standardized) has emerged. The product does not need civil construction and occupies a small area,the configuration is very flexible,the power supply is more reliable,the construction and installation, debugging time is greatly shortened, and the overall cost is reduced.

With the development of modern industry,the degree of automation and intelligence of electrical control equipment is getting higher and higher. the use of modern electronic technology, sensor technology,communication technology, computer network technology, the power equipment in the normal and accident conditions of monitoring, protection,control, measurement and other integration, to achieve good management, has become an inevitable trend and development direction.

Outdoor high pressure ring cage (standardized) is the use of foreign advanced technology, install and adjust 12kv switchgear, circuit breaker, load switch,current and voltage transformer,12kv power supply PT, switching station FTU,RTU, communication control terminal (CCU), 12kv metering and automatic meter reading, USP power supply and indicating instrument into a movable, sealed and moisture-proof stainless steel box. Thus. the integration and modular assembly of the primary and secondary systems of the urban distribution network are realized, the construction period is shortened, and the reliability of the urban power network operation is greatly improved.

Environmental conditions of use

◆Altitude: <1000m;

◆Maximum ambient temperature: +40°C;

◆Minimum ambient temperature: -25°C ;

◆Maximum daily temperature difference: 25K;

◆Indoor relative humidity: daily average ≤ 95% monthly average ≤ 90%;

◆Earthquake resistance: ground horizontal acceleration 0.2g; vertical acceleration 0.1g simultaneously,. Resonance, sinusoidal and beat wave test methods were adopted. Exciting 5 times, 5 waves each time, each interval 2s, safety factor is not less than 1.67;

◆The installation site should be free of gas vapor, chemical deposition, dust, pollution and other explosive and corrosive media that seriously affect the insulation of the load switch;

◆Used in ungrounded systems and 12kV systems grounded by small resistance or arc suppression coil.

Meet the standard

This product meets the latest issued and implemented national standards, industry standards and lEC standards, and other standards with higher performance can be used after consultation with the user, The relevant provisions contained in the following standards constitute, by reference, the provisions of these technical conditions. All standards are subject to revision, and this technical condition shall comply with the requirements of the latest version of the following standards.

◆GB 16926-1997AC high voltage load switch and fuse combination appliance

◆GB 3804-2004 3.6kV~40.5kV high voltage AC load switch

◆GB 3906-2006 3.6kV~40.5kV AC metal enclosed switchgear and control equipment

◆GB/T 11022-1999 High voltage switchgear and control equipment standard common technical requirements

◆GB 4208-2008 Shell protection grade (IP code)

◆IEC420 high voltage AC load switch and fuse combination appliance

◆lEC298 AC metal enclosed switchgear and control equipment above 1 kV and below 52kV.

◆GB 1984-2003 High voltage Ac circuit breaker

Product characteristics

The product adopts gas insulation, and can be equipped with circuit breakers, load switches, combined electrical appliances and other primary programs

The product is based on the latest distribution automation standards for the first and second fusion design, integration of DTU and intelligent sensing, online detection and other intelligent components, suitable for a variety of distribution automation system applications.

◆Strong adaptability to the environment

◇Industrial grade design, the severity level reaches outdoor level IV

◇Good electromagnetic compatibility design, internal test to meet IV requirements;

◇Convenient on-site installation and debugging;

◇Convenient maintenance, low cost, provide remote maintenance

◆Rich function,excellent performance

◇A variety of communication ports, double Ethernet,4 serial ports, support optical fiber, wireless routing communication;

◇Support the current popular protocols,GB101,GB104, CDT, MODBUS, etc.

◇Support communication timing,≤ 5S, punctuality accuracy ≤ 2S/ day;

◇Support national network communication data encryption (168);

◇Control 4 way, 6 way, 8 way switchgear, isolation switch and grounding brake;

Support environmental temperature and humidity monitoring;

◇With harmonic analysis function; Support "three remote" function, analog accuracy reaches 0.2/0.5 level;

◇With a variety of protection functions, short circuit overcurrent, single-phase grounding;

◇80-point fault recording and fault message upload;

◇Support a variety of voltage/power operation power supply, battery activation;

◇Support electromagnetic transformer or electronic transformer access;

◆Intelligent: integrated distribution network automation intelligent terminal, can achieve distribution network automation, feeder automation and other intelligent distribution network functions.

◆Integration: a two-time integration design, a switch equipment integration of two intelligent components, integrated design, easy integration and operation and maintenance.

◆Miniaturization compact structure, easy operation, mainly equipped with gas insulated switchgear and solid insulated switchgear equipment produced by our company.

◆Diversification: Circuit breakers, load switches, combined electrical appliances and other schemes can be freely combined to meet different needs.