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Originating from Germany manufactured by Sigma electric company SGM Series SF6 Ring main switch cabinet ( SGM-C Total of box-type, SGM-E Unit-combination can be extended), widely used in indoor and outdoor switching station, box-type substation, residential quarters, office buildings, commercial centers, buildings, factories and so on 12/24kV Power distribution network.

Cable into the unit outlet (k)

Transformer fuse protection unit (t)

Vacuum circuit breaker protection unit (v)

SGM-E series can be used both indoors, can also be used outdoors,

Module dimensions: technical specifications model/size

　
Secondary substation SGM series is available in industrial and mining enterprises, upgrading of urban power network distribution networks up to the 12/24KV and main networks are:

Outdoor switching station

Box-type substation

User distribution room

Wind power generation

Hydro-electric power

Standards-compliant:

SGM series ring meets the following standards and specifications:

Chinese GB standards

GB11022；GB3906；

GB1984；GB3804

GB16926

International standards

IEC60376

IEC60129

IEC60298

IEC60265-1

IEC60420

IEC60694

IEC60282；

IEC60056

DIN VDE0670 (Germany standard)

SGM Series of products have the following characteristics:

The clock

SGM Series of hermetically sealed, full insulation determines the high degree of adaptability to the environment;

Busbar, high voltage switch active components are sealed in stainless steel plate ( .>=3mm ) Welded together SF6 Inside the air box;

Cable seal in silicone rubber cable accessories;

Silicone rubber seal seals of the Busbar shielded extension.

No gap seals on the electrical connections and sealed air box structure SGM Particularly suitable for safe operation in harsh outdoor conditions, such as:

The basement

Moisture condensation

Low temperature, high temperature

Plateau climate

Environmental protection

Product use environmentally friendly materials, from the production process and production technology, to the end of the product life cycle, 90% These materials can be recycled again

Security

Complete chain of interlocking systems; anti-arcing fault inside the air box design for the thickness of 3mm High-performance air box, ensure SF6 Not to divulge, even if air arc fault, dedicated blast valves guarantees security of the person

Universally applicable

Because SGM Unique full insulation, hermetically sealed design, so that it has broad application, available in a variety of environments and reliable operation, even in harsh conditions, such as humidity, dust, g/f, Highland will not affect the switch is working correctly.

Maintenance-free, easy to operate

All the high-voltage live parts SF6 Inside the air box, avoiding damp heat, avoiding environmental pollution when cleaning. Where human nature, small and hard, fuse unit with spring fed body, ease of collection, manipulation, any function module can be retrofitted motor-operated.

Extended flexible and widely used

SGM Series can be made into modules box, also have the flexibility to combine different module combinations to meet different customer needs. Easy to install modular electric operation can be reserved as a piece, preparing for the distribution network automation in the future.

1 ： SGM-E Series reserved for future expansion in the bus current 630A Unlimited within range expansion; bus extension is located in upper Cabinet, easy to install

2 ： SGM-C Series Cabinet height 1100mm, Outdoor box height 1400mm ( with motor-operated ) 。