8DJH With Siemens cooperation

Medium Voltage Switchgear for Secondary Distribution System Up to 24KV, Gas Insulated

Futures

8DJH switchgear is factory-assembled, type-tested, 3-pole metal-enclosed, single-busbar switchgear for indoor installation:

• Up to 24 kV
• Feeder currents up to 630 A
• Busbar current 630 A

Typical uses

8DJH switchgear is used – even under severe ambient conditions – for power distribution in secondary distribution systems, such as
■Substations, customer transfer substations, distribution substations and switching substations of power supply and public utilities
■Industrial plants, such as:

• Wind power stations, high-rise buildings, airports
• Lignite open-cast mines, underground railway stations
• Sewage treatment plants, port facilities
• Traction power supply systems
• Automobile industry, petroleum industry
• Chemical industry, cement industry.

Standard

8DJH switchgear is classified according to IEC/EN 62271-200 /VDE 0671-200.
Design and construction

Internal arc classification (option)

Modular design

• Individual panels and panel blocks can be lined up and extended at will – without gas work on site
• Low-voltage compartment available in 3 overall heights, wiring to the panel via plug connectors.

Cost-efficiency
Extremely low “life-cycle costs” throughout the entire product service life thanks to:

• Maintenance-free design
• Climatic independence
• Minimum space requirements
• Maximum availability.

Reliability

• Type and routine-tested
• Standardized, NC production processes
• More than 500,000 switchgear panels in operation in hermetically welded design.

Quality and environment

• Quality and environmental management system according to DIN EN ISO 9001 and DIN EN ISO 14001.

Personal safety

• Safe-to-touch and hermetically sealed primary enclosure
• HV HRC fuses and cable sealing ends are only accessible when outgoing feeders are earthed
• Operation only possible when enclosure is closed
• Logical mechanical interlocking
• Capacitive voltage detecting system to verify safe isolation from supply
• Feeder earthing via make-proof earthing switches.

Technology

• Maintenance-free components
• Complete switchgear climate-independent
• Three-pole primary enclosure, metal-enclosed
• Insulating gas SF6
• Welded switchgear vessel without seals, made of stainless steel, with welded-in bushings for electrical connections and mechanical components
• Three-position switch-disconnector with load-break function and make-proof earthing function
• Cable connection for bushings with outside cone
• Connection with cable plugs
  • In ring-main feeders and circuit-breaker feeders with bolted contact (M16)
  • In transformer feeders with plug-in contact or optionally with bolted contact (M16)
• Pressure relief downwards, optionally to the rear or upwards via pressure absorber systems
• Wall-standing arrangement, optionally free-standing arrangement.