Square D Digest 179

Gas-Insulated Switchgear (GIS) for Primary Distribution Class 6047 / Refer to Brochure 0600BR1201

Medium Voltage Switchgear

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GHA Gas-Insulated Switchgear (UL Listed)

Easy, innovative, and economical up to38kV GHA Medium Voltage (MV) switchgear is an ideal solution for a variety of applications and requirements. GHA is well suited for public and industrial distribution networks, infrastructure projects, petrochemical oil and gas industries, and container substations to name a few. This compact and modular switchgear offers both flexibility and a long, low maintenance service life. Each section consists of sealed-for-life SF 6 modules, which contain the fixed vacuum circuit breaker, disconnect switch, and innovative busbar system. By design, there is no gas handling throughout the service life of the equipment, from installation until recycling at the end of life of the switchgear. Utilize the cutting-edge B-link busbar to easily install, extend, or replace gear in the middle of a lineup, without handling SF 6 . Like the gas-filled modules, the B-link system does not require any maintenance. Front accessible and ideal for a variety of applications, GHA represents the new generation of robust, extremely compact, and low maintenance MV switchgear. Table 11.20: Ratings

Rated Lightning Impulse Withstand Voltage (kV)

Listed Metal-Enclosed Interrupter Switchgear

Rated Power Frequency Withstand Voltage (kV)

Rated Short Time Withstand Current (kA)

Rated Busbar Current (A)

Rated Current of Outgoing Feeders (A)

Arc Resistant per IEEE C37.20.7

Rated Voltage (kV)

12 15 27 38

75 95

28 38 50 80

40 40 40 40

2500 2500 2500 2500

2500 2500 2500 2500

40ka duration for 0.5 seconds

125 170

Table 11.21: Dimensions Electrical Characteristics

Dimensions (in./mm)

Cubical Width Bus Tie with Circuit Breaker

Rated nominal current (A)

Rated Voltage (kV)

Section Height

Depth

Bus Sectionalizer

Main/Feeder

≤1200

23.6/600

31.5/800

23.6/600

62.8/1595

94.5/2400 (with 31.5/800 LV compartment)

12 17.5

24 38

2500

35.5/900

39.4/1000

23.6/600

62.8/1595

11 SWITCHBOARDS AND SWITCHGEAR

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