IGEA S series switchgear

Environment conditions:

  • Climatic version: U (temperate), location category: 3 

  • Ambient temperature: minus 5°C to +55°C

  • Relative humidity: max. 98% at 25°C

  • Altitude: max. 1000m above sea level

Main performance specifications

Property

Value

Rated voltage, kV

6.3

10.5

20

Operating voltage, kV, max.

7.2

12

24

Rated frequency, Hz

50/60

50/60

50/60

Rated operating current, A

630-2500

630-2500

630-2000

Short circuit trip rate current, kA, max.:

 

- at rated operating current of 630А

25

25

25

- at rated operating current of 1000А, 1250А, 2000А

31.5

31.5

25

- at rated operating current of 2500А

31.5

31.5

-

Rated short-circuit engagement current (shock current), kA, max.:

 

 

 

- at rated operating current of 630А

63

63

63

- at rated operating current of 1000А, 1250А, 2000А

80

80

63

- at rated operating current of 2500А

80

80

-

Thermal current flow time, s

3

3

3

Load switch cell rated operating current (fuse dependent), A

50-250

50-250

50-250

Fuseless contactor cell rated operating current, A

450

450

450

Fused contactor cell rated operating current, A

450*

450*

450*

Auxiliary circuit rated AC/DC voltage, V

220/110

220/110

220/110

* According to HV fuse rating

Advantages

Unlike air-insulated switchgear, these feature vacuum arc chutes within sealed welded stainless steel reservoirs pressurised with SF6 gas to provide double insulation for live parts.

Sealed SF6 reservoirs provide:

  • Insensibility to aggressive ambient (salt water, air humidity, dust, temperature)

  • Prevention of foreign matter penetration (dust, debris, small animals)

  • High resistance to arc fault due to interrogation interlocks and proven sealing

  • 100% safety for service personnel to access the primary sealed enclosure

  • OPEX free switching elements and fully insulated cable adapter based connection system to improve operating personnel safety and to avoid SF6 gas handling while installing, expanding, or replacing the equipment. Time before maintenance (TBM) of the applied power switches is 10,000 switching cycles.

Technical description:

  • Ready-for-use switchgear with a sealed metal container and metal partitions, for indoor applications

  • Stainless steel gas-tight welded reservoir

  • SF6 insulated switchbox

  • Single-pole insulation for cable connections and bus bars

  • No SF6 gas handling while installing or expanding the switchgear

  • Silicon resin insulated screened bus bar system

  • Cable connections of the front and back by plug adapters

  • Maintenance-free

Personal safety:

  • Contact safety due to metal enclosure of live parts

  • Graphic diagram with mechanical indication of switching positions

  • HV fuses and cable terminal boxes available with grounded external branches, only (option)

  • Disabled control with opened casing (for HV fuse cells, only)

  • Interrogation interlocks

  • Capacitive no-voltage monitoring system

  • Reliable feeder grounding with a vacuum power switch

  • Resistance to arc fault – pressure-proof connection boxes – pressure relief duct at the back side (for free installation)

Low cost:

A switchgear customer shall bear very low OPEX while enjoying the highest degree of operating readiness, as the equipment is…

…maintenance-free,

…resistant to climatic and ambient conditions,

…compact,

…durable.

Reliability and high operating readiness:

  • Primary circuits in sealed containers are protected against environment (contamination, moist, small animals)

  • Welded enclosure remains sealed within the entire service life

  • Accessibility of switching device actuators located outside the switchgear container

  • Interlocks and logical arrangement of actuator components to prevent erroneous switching

  • Easy-to-read operating readiness indication with self-test function, resistant to ambient temperature and pressure fluctuations; non-contact measurement; remote signal transmission contacts (option): 1×NO, 1×NC

  • Low fire load

  • Sealed pressure system: the container is pressurised with maintenance-free insulating SF6 gas


 

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