Type EH9

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Short characteristics:
An underground transformer substation – serviceable from the interior. Reinforced concrete body shell.

Basic specifications:

Outside length: 6.500 mm
Outside width: 3.000 mm
Burring depth: 3.610 mm
Total height: 3.610 mm
Total weight (excluding the technology): approx 41 t
Inner volume: approx. 40,5 m3
Ground coverage: approx. 19,8 m3
Max. transformer size: up to 1.250 kVA, (2 x 1000 kVA)
Total volume of oil pan: approx. 3,75 m3 (2,5 x 2,5 x 0,6m)
HV switchgear: modular, compact (3 or more bays)
LV switchgear: 8 or more fuse disconnectors up to 400 A
The underground transformer substation can be entered through a man-hole trap door built into a waterproof removable section steal cover dimensioned 2,20 x 1,25 m
The underground transformer substation is vented through two ventilation shafts with all-aluminium covers fitted to the walls.

Substation gear assembly or replacement can only be done through the detachable steel top cover in the roof part of the substation.