1 kV and 10 kV Classes
Available with black PVC insulation (1 kV) and terracotta (10 kV). Test voltage up to 42 kV.
SHMTI and SHATI Hard Insulated Busbars
SHMTI (copper) and SHATI (aluminum), 1 kV and 10 kV classes, solid PVC insulation
Key features
Copper and Aluminum
Solid busbars made of Cu-ETP (M1) copper or AD31t aluminum. Material selection tailored to the project.
Monolithic extrusion
Insulation is applied by continuous extrusion — stable thickness, high elasticity.
For stationary applications
Rigid construction for switchgear, busbar bridges and busways.
Where hard insulated busbars are used
Hard insulated busbars are used as part of switchgear, for its connection, and also in building budget-friendly busbar bridges and busways. They replace non-insulated busbars and cable assemblies, providing ready-made insulation and ease of installation.
Traditional approach
- Non-insulated busbars — additional on-site insulation required, risk of breakdown
- Cable assemblies — limitations in current loads and rigidity
METAENERGY solution
- Ready-made monolithic PVC insulation with high electrical resistance
- Stable thicknesses, high dielectric strength >20 kV/mm, easy installation
Voltage classes and insulation
Busbars are manufactured for 1 kV (SHMTI, SHATI) and for 10 kV (SHMTI-10, SHATI-10). Insulation — PVC: black for 1 kV (thickness 2±0.2 mm, test voltage 2.2 kV) and terracotta for 10 kV (thickness 4±0.2 mm, test voltage 42 kV).
Insulation is applied by continuous extrusion method, which ensures uniformity and elasticity. The safety margin exceeds the regulatory minimum — specific values are given in the technical specifications and product certificate.
Conductor Materials
Copper SHMTI busbars are manufactured from Cu-ETP (M1) copper per GOST 859 with a copper mass fraction of at least 99.9%. Aluminum SHATI busbars are made from AD31t alloy per GOST 15176.
Copper provides high conductivity (1.6 times higher than aluminum), mechanical strength, and oxidation resistance of contacts. Aluminum is attractive for its light weight, low cost, and high corrosion resistance.
Below are the main types of METAENERGY hard-insulated busbars.
Products
Hard-insulated busbars are supplied in copper and aluminum versions with 1 kV or 10 kV insulation.
In customer specifications, busbars may be designated as STP; in the METAENERGY catalog — SHMTI (copper) and SHATI (aluminum).
SHMTI / SHMTI-10
Hard insulated copper busbar (SHMTI)
Hard insulated copper busbars for stationary applications. Voltage classes 1 kV (SHMTI) and 10 kV (SHMTI-10).
- Copper Cu-ETP (M1), copper mass fraction ≥ 99.9%
- PVC insulation: black (1 kV, 2±0.2 mm), terracotta (10 kV, 4±0.2 mm)
- Test voltage: 2.2 kV (1 kV) / 42 kV (10 kV)
- Standard length 4000 mm; can be manufactured up to 6000 mm
- Size range: thickness 3..12 mm, width 15..120 mm (according to catalog)
Manufactured according to TU 3439-008-97798631-2013 (1 kV) and MPRC.6855.010 TU (10 kV). Marking on insulation available upon request.
SHATI / SHATI-10
Hard insulated aluminum bus (SHATI)
Hard insulated aluminum buses for safe electrical current transmission. Voltage classes 1 kV and 10 kV.
- Aluminum alloy AD31t per GOST 15176
- PVC insulation: black (1 kV, 2±0.2 mm), terracotta (10 kV, 4±0.2 mm)
- Test voltage: 2.2 kV (1 kV) / 42 kV (10 kV)
- Standard length 4000 mm; custom order — up to 6000 mm
- Size range: thickness 3..12 mm, width 15..160 mm (per catalog)
Manufactured according to TU 3439-008-97798631-2013 (1 kV) and MPRC.6855.010 TU (10 kV). Individual marking is possible.
Standard sizes and selection
Main standard sizes of SHMTI and SHATI busbars are presented. Full range — see manufacturer's catalog.
SHMTI (copper) — main standard sizes
| Designation | Cross-section, mm² | Thickness, mm | Width, mm | Length, mm |
|---|---|---|---|---|
| SHMTI 3×15 | 45 | 3 | 15.5 | 4000 |
| SHMTI 3×20 | 60 | 3 | 20 | 4000 |
| SHMTI 4×40 | 160 | 4 | 40 | 4000 |
| SHMTI 6×60 | 360 | 6 | 60 | 4000 |
| SHMTI 10×100 | 1000 | 10 | 100 | 4000 |
| SHMTI 12×120 | 1440 | 12 | 120 | 4000 |
SHATI (aluminum) — main sizes
| Designation | Cross-section, mm² | Thickness, mm | Width, mm | Length, mm |
|---|---|---|---|---|
| SHATI 3×15 | 45 | 3 | 15.5 | 4000 |
| SHATI 4×20 | 80 | 4 | 20 | 4000 |
| SHATI 5×25 | 125 | 5 | 25 | 4000 |
| SHATI 6×60 | 360 | 6 | 60 | 4000 |
| SHATI 10×100 | 1000 | 10 | 100 | 4000 |
| SHATI 12×120 | 1440 | 12 | 120 | 4000 |
Comparison of copper and aluminum busbars
Key differences by material and uniform insulation for all configurations.
| Parameter | SHMTI (copper) | SHATI (aluminum) |
|---|---|---|
| Conductor material | Cu-ETP (M1), copper ≥ 99.9% | AD31t (aluminum alloy) |
| Electrical conductivity | 1.6 times higher | Lower (but sufficient for many applications) |
| Density / Weight | Higher (~8.9 g/cm³) | Lower (~2.7 g/cm³) — lighter |
| Approximate cost | Higher | Lower (budget option) |
| Contact corrosion resistance | High, contacts do not oxidize | Good, corrosion resistant |
| Insulation 1 kV | PVC black, 2±0.2 mm, test 2.2 kV | Same |
| Insulation 10 kV | PVC terracotta, 4±0.2 mm, test 42 kV | Same |
Solid PVC insulation
Dielectric strength >20 kV/mm. Stable thickness throughout the entire length. High elasticity. Test voltage: 2.2 kV (1 kV) and 42 kV (10 kV).
Advantages
METAENERGY hard-insulated busbars combine proven materials and effective insulation.
Copper reliability
High electrical conductivity, mechanical strength, durability. Contacts do not oxidize.
Aluminum lightness
Low specific weight, high corrosion resistance, attractive cost.
Extrusion technology
Continuous extrusion of insulation ensures uniform thickness, elasticity and increased safety margin — according to specifications and product passport.
Additional for designer
Standard length 4 m
Manufacturing of busbars up to 6000 mm in length is possible upon individual order.
Manufacturing according to specifications
Busbars are manufactured according to specifications TU 3439-008-97798631-2013 (1 kV) and MPTS.6855.010 TU (10 kV).
Flexibility in dimensions
Thickness from 3 to 12 mm, width from 15 to 160 mm. Wide range of cross-sections.
Application in busbar bridges
Busbars are in demand for building budget variants of busbar bridges and current conductors.
Marking on request
Marking can be applied to the insulation according to customer requirements.
Place in METAENERGY nomenclature
Hard-insulated busbars are part of the insulated busbar family, complemented by busbar holders and insulators.
Voltage class
1 kV / 10 kV
Selection according to network operating voltage.
Material
copper / aluminum
Depending on conductivity, weight and budget requirements.
Cross-section
45–1440 mm²
According to catalog; other configurations — custom project.