ISO9001 2000 Iuniswitch Air Insulation Ring Main Unit Switchgear

iUniuswitch Air Insulation Ring Main Unit

iUniswitch, the light flexible switchgear developed as a modular, simple to apply design, with fewer components, providing a high reliable, quality and safe product for you, our Customer. By reducing the number of components, utilising modern materials correctly, we have developed an environmentally and user friendly product. The simple design and construction of iUniswitch will stand the test of time for generations to come.
iUniswitch is an air insulated (AIS), metal enclosed, switchgear cubicle design of the next generation developed through continuous innovation and vision to meet the changing market needs.
iUniswitch provides long-term technical solutions for various applications. Safety, user friendliness and environmental con- cerns have been the driving force in the development of the switchgear.

Feature

iUniswitch product provides our Medium Voltage Customer with the best solution for heavy duty switchgear in a size only a little than a single tank Ring Main Unit while including:

the flexibility in meeting our Customers specification and accomodating on future change and upgrading

the options include complete control, measuring and protection systems

iUniswitch Air Insulation Ring Main Unit Construction

Metal enclosed switchgear

iUniswitch Air Insulation Ring Main Unit

Busbar compartment

The busbar compartment is located on the top of the cubicle. This compartment contains the main busbars that intreconnect between switchgear cubicles.

Switching compartment

A 3-position SF6 switch disconnector with epoxy cast resin housing is provided with inspection windows and available also with gas density indicator.

Cable compartment

75 % of the space in the switch disconnector cubicle is reserved for power cable connection making it possible to use both 1- and 3-phase cables with most simple unscreened terminations. Space is also adequate for cubicle accessories such as surge arresters, current transformers, second earthing switch etc. The door has an inspection window and safety interlocking as standard. For cable entry there are 3 individual cable gland plates in the bottom with support for a suitable dimensioned cable clamp. The bottom and the threshold of the cubicle can be removed for ease of cable installation.

Mechanism, interlocking and low voltage compartment

Behind a hinged door (which serves as control panel) are located the spring operating mechanism with position indicator and the mechanical interlocking unit. There are also facilities for cubicle accessories such as: auxiliary contacts, tripping coil, emergency tripping mechanism, capacitive voltage presence indicating system, key interlocks and motor operating device. Space is also provided for control circuits and measuring instruments as well as a protection relay. In the 750 wide cubicles there is also a second indentical compartment for further accessories.

The upper part of the cubicle, including the busbar compart- ment, the switch disconnector and the mechanism and low voltage compartment is separated from the lower part and the cable compartment. Because of this it is possible to carry out maintenance, repair and upgrading of the unit in the lower module while the switchgear is in service.

iUniswitch Air Insulation Ring Main Unit Construction

Primary part

Top unit

3-position switch disconnector SFG

Operating mechanism with mechanical position indication

Enclosure of busbar compartment

Integrated low voltage compartment for secondary components

Interlocking unit

Busbars

Control cable ducts

Bottom unit

Enclosure

Circuit breaker (fixed version)

Current transformers

Earthing switches

Voltage transformers

Cable entry with cable support

Cubicle Types / Cubicle Program

Switch Disconnector Cubicle, type SDC

Switch Disconnector with Fuse, type SDF

Circuit Breaker Cubicle, type CBC

Withdrawable Circuit Breaker cubicle, type CBW

Sectionalising Cubicle, type SEC

Bus Riser Cubicle, type BRC

Sectionalising cubicle with Fuse, type SEF

Sectionalising Breaker Cubicle, type SBC

Direct Busbar connection Cubicle, type DBC

Sectionalising Withdrawable Breaker cubicle, type SBW

Sectionalising Metering cubicle with Disconnector, type SMD

Bus Metering Cubicle, type BMC

Sectionalising Metering Cubicle, type SMC

Universal Metering Cubicle, type UMC

iUniswitch Air Insulation Ring Main Unit Technical data

1) Higher values in accordance with national standards on request
2) Adjustment is necessary for greater altitudes1) Higher values in accordance with national standards on request

3) Lower ambient temperature on request.

4) 1250 A = CBW, SBW, BRC, DBC

Unisun Electric was founded in August 1987, formerly known as the original Yueqing Great Wall electrical equipment factory, founded by Mr. Huang in June 1987, Mr HUANG is also founder of YUEQING QIUJING SWITCH FACOTRY(FORMER OF CHIINT AND DELIXI).

After more than 30 years of development, the products cover Medium Voltage Switchgear, low voltage switchgear, Busbar Trunking System, Pole Top Switch, Transformers, Instrument Transformer, Ring Main Unit, Load Break Switch.

Unisun Electric has more than 600 offices and sales companies in all major cities in China, with 81 holding companies and more than 300 foreign-invested cooperative companies, with more than 3, 500 elite employees, including 450 scientific and technical personnel Operating area of 127, 000 square feet, the products are exported all over the world.

Over the years the company has been committed to the development of national electrical industry, and many scientific research institutes, universities and international industry giants to establish close cooperation, set up a "Anhui LV Power Technology Research Institute".

2009 and the United States General Motors (GE) strong combination, to create the Asia-Pacific region's largest and most professional marine switchgear and low-voltage electrical equipment, has developed the GEA plus2.0, Modula plus, Modula 630k, marine transformers, marine box substation, Marine electrical automation equipment, tunnel dedicated distribution cabinet and other products.

Unisun Electric in accordance with the modern enterprise advanced management mode, established a scientific and sound management system, in strict accordance with the ISO9001: 2000 quality management system for production, sales and service, such as comprehensive, strict and scientific control and management, 2008 and have imported ISO14001: 2004 environmental management system and OHSAS18000 occupational health and safety management system, to create an environmentally friendly, healthy, safe and harmonious new enterprise.

The company's production and development of products, have passed the 3C, CQC, UL certification, and have access to "YUEQING FAMOUYS MARK", "Zhejiang Famous Brand Product", "China's well-known high and low voltage switchgear products top ten brands", "China's leading enterprises", "China's top ten brands", "China's top ten brands", "China's top ten brands, " "China's top ten brands, " "China's top ten brands" Big influence brand ", " national famous product after-sales service advanced unit "honorary title.

The twenty-first century is the era of knowledge economy, enterprise competition and development with the opportunity, both opportunities and challenges. And excellent in the "in good faith as a fundamental, customer-centric, quality of survival, innovation and development" business philosophy, the spirit of "seeking cooperation and win-win cooperation" business philosophy sincerely welcome friends at home and abroad work together, A total of the glorious future, create greater glory!