Square D Digest 179

Air-Insulated Switchgear for Primary Distribution Class 6055 / Refer to Catalog 6055CT9901

Medium Voltage Switchgear

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Dimensions and Weight

24.04 [610.6]

45.17 [1147.3]

Top LV Wireways

2.33 [59.1]

7.28 [184.8]

A

11.00 [279.4]

95.0 [2414.2]

97.31 [2471.6]

11.00 [279.4]

Typ. Mid. LV Wireway

12.50 [317.5]

Cubicle Connection Holes-Rear

1.77 [45.0]

Rear Air Intake Louvers

39.90 [1013.5]

Cubicle Connection Holes-Front

Ground Bus

Rear Bolted Panels

3.19 [81.0]

51.69 [1312.9]

Breaker Compartment Air Intake

26.00 [660.4]

B

58.09 [1475.4]

92.27 [2343.5]

93.85 [2383.9]

C

Table 11.18: Switchgear and Component Approximate Dimensions Item

Description

11 SWITCHBOARDS AND SWITCHGEAR

A B C

Section Height Section Width Section Depth

95 in. (2,413 mm) 26 in. (660 mm) 92.5 in. (2,350 mm)

Masterclad™ Medium Voltage Metalclad Switchgear (UL Listed) The Reliability of a Quality Design Masterclad™ offers a customizable solution for demanding medium voltage applications. Rugged construction is coupled with low maintenance 3-cycle vacuum circuit breaker. A comprehensive design testing program has been performed by Schneider Electric. The switchgear and breakers are designed and tested in accordance with all applicable ANSI Standards C37.04, C37.06, C37.09, and C37.20.2. The switchgear and breakers meet the requirements of ANSI, IEEE, NEMA, and exceeds most IEC standards. Table 11.19: Ratings Nominal voltage (kV) 4.16 7.2 13.8 24.9 Maximum voltage (kV) 4.76 8.25 15.0 27.0 BIL (kV) 60 95 95 125 Frequency (Hz) 50/60 Continuous amperes (A) 1200–4000 1200–2000 MVA (reference only) 250 350 500 500 500 750 1000 1500 1250 2000 Short-time rating (kA) 3 seconds 40 50 63 50 25 40 50 63 25 40 Close and latch rating (kA) (peak) 104 130 164 130 65 104 130 164 68 108

Listed Metalclad Switchgear

Two-high Masterclad 5–27 kV Indoor, Metalclad Switchgear

11-19

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