Switchboards for HV and VHV substations

(self-consumption switchboards, control cabinets and protection cabinets)

RO type switchboards are used to control and signal the status of technological equipment in the fields of outdoor HV and VHV substations. The technological content of switchboards is given by the specification according to the customer’s project documentation. Switchboards are designed and manufactured according to standards ČSN EN 61 439-1 ed.2, ČSN EN 61 439-2 ed.2.


Rated voltage: up to 3×400 / 230 V, 50 Hz, up to 220 V DC
Protection against dangerous contact voltage: automatic disconnection from the power supply, protective connection
Switchgear protection: IP 43/00
Cabinet material: stainless steel
Surface treatment: with powder paint (RAL 7032, 7035, possibly according to the customer’s wishes) or without treatment


RO             single door
RO-T         two-door
RO/N        without surface treatment
RO/N,L     powder coated

Basic dimensions [mm]:

standard cabinet dimensions are 1000 x 1600 x 500 mm (w x h x d)
dimension in non-standard design can be adjusted to (800-1000) x (1600-2000) x (500-600) according to the filling

110 kV HV outdoor field control
RO – interior equipment
RO stainless steel – 110 kV substation
RO – folding panel
RO – interior equipment
Transformer cell control
35 kV substation – RO / N, L assembly
Tuning choke control