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MV switchgear, LV distribution boards and metal distribution cabinets from our own production in Prokuplje.
Medium-voltage switchgear
Medium-voltage switchgear is assembled from cells for indoor installation, made of 1.5 and 2 mm cold-rolled steel sheet protected by powder coating.
The configuration depends on the customer's needs and may include line, transformer, coupling and metering cells.
We build the switchgear with air-insulated medium-voltage load-break switches made by EMO from Ohrid or TSN from Maribor, and can also adapt it to switches from other manufacturers.
| Quantity | Symbol | Value |
|---|---|---|
| Rated voltage | Un | 10 kV |
| Rated insulation voltage | Un | 12 kV |
| Rated current | In | 400 A |
| Rated short-time withstand current | Ith | 14.5 kA |
| Rated peak withstand current | Iud | 36 kA |
| Rated three-phase short-circuit power | Pk | 250 MVA |
| Degree of protection | IP20 |
Distribution boards 0.42 kV
The 0.4 kV switchboard consists of an incoming and an outgoing panel, or a combination of these if transformers operate in parallel. A compensation panel, a street lighting panel or a generator panel can be added. They are made of cold-rolled steel sheet protected by powder coating, for indoor installation.
The incoming panel connects the LV switchboard to the power transformer. It is fitted with a circuit breaker or a switch disconnector, and voltages and currents are always measured in all three phases.
The outgoing panel distributes electrical energy to the consumers. The standard panel has eight 400 A outgoing feeders, which can be fitted with fuses only, with fuse rails, with fuses and disconnectors, with moulded-case circuit breakers only, or to the customer's specific requirements.
| Quantity | Symbol | Value |
|---|---|---|
| Rated voltage | Un | 0.4 kV |
| Rated insulation voltage | Un | 1 kV |
| Rated current | In | 1000 A |
| Rated short-time withstand current | Ith | 22 kA |
| Rated peak withstand current | Iud | 37 kA |
| Degree of protection | IP20 |
Metal distribution cabinets
Metal distribution cabinets are made of cold-rolled steel sheet 1 to 1.5 mm thick, depending on the cabinet size: up to 600 × 600 mm the sheet is 1 mm thick, and for other sizes up to 800 × 1200 mm it is 1.5 mm thick.
All cabinets are powder coated with textured polyester powder in RAL 7032 and are made in degrees of protection IP55, IP65 and IP66. They are supplied with a wall-mounting kit that allows the cabinet to be mounted without drilling the enclosure, so it retains its declared degree of protection.
Two vertical profiles are welded to the inside of the cabinet door; they reinforce the door and are used for mounting equipment. The mounting plate is made of 2 mm galvanised steel sheet.
We offer particularly favourable terms for complete cabinets, fitted with equipment and wired according to the customer's documentation or our own design. We also manufacture other types of metal cabinets: free-standing cabinets, cabinets for pole-mounted substations, equipotential bonding boxes and the like.