Prefabricated Grid Connection Stations
Standardized, delivered fast, ready for immediate use: MV grid connection in 20-ft format – walk-in or compact.
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Product Overview
Four product lines for your MV grid connection
Standard station (20 ft, walk-in)
The flexible standard for MV grid connections: walk-in, modularly configurable, delivered fast.
Compact station (non-walk-in)
Minimal footprint, simplified permitting.
Transformer station (10 ft / 20 ft / 3.5 × 8 m)
Standardized dimensions, individually configurable.
33 kV Scalable Station (E-House)
Modular multi-cabin E-House: factory-integrated, scalable.
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Built-in component
MV switchgear: Schneider Electric RM AirSeT
Select the voltage level of your project – we will guide you directly to the right solution.
In our 10–20 kV grid connection stations we exclusively use the RM AirSeT from Schneider Electric – SF6-free with pure air and vacuum (SVI™ technology).
- SF6-free: pure air and vacuum (SVI™) – no F-gas
- IP67: lifetime-tight welded stainless steel gas tank
- 40 years design service life, low maintenance
- 1–4 functional units in one gas tank
- Connectivity: EcoStruxure-ready
- Green Premium: RoHS and REACh compliant
Source: Schneider Electric, Catalogue 2024
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Standard station (20 ft, walk-in)
Configurations
Medium-voltage side (MV)
| C(C)VM | C(C)VMDV | C(C)VVMM | |
|---|---|---|---|
| Grid side | Ring feed-in (optional) | Ring feed-in (optional) | Ring feed-in (optional) |
| Consumer side | 1 outgoing feeder, 1 meter | 1 outgoing feeder, 1 meter | 2 outgoing feeders, 2 meters |
| Auxiliary power supply | LV-fed, LV-metered | HS gespeist, NS gemessen | LV-fed, LV-metered |
| Auxiliary transformer | < 135 kVA | < 630 kVA | < 135 kVA |
Low-voltage side (LV)
| C(C)VM | C(C)VMV | C(C)VMVM | |
|---|---|---|---|
| 400 V AC / 220 V DC distribution | 1 | 1 | 1 |
| Communication/control cabinet | 1 | 1 | 1 |
| Metering cabinet | 1 | 1 | 1 |
| UPS (DC 24 V, 8 h) | 1 | 1 | 1 |
| 690/800 V LV feed-in | 1 | 1 | 1 |
| 690/800 V LV outgoing feeder | 3 | 2 | 1 |
Technical Data
- Voltage range: 10–20 kV · Busbar: 630 A
- Insulation: HV metering cabinet air-insulated; switchgear panels: Pure Air
- LV distribution: MNS design, fixed-mounted circuit breakers
- UPS: DC 24 V, 8-hour system
- Enclosure: 20 ft HC container (6,028 × 2,438 × 2,896 mm)
- Corrosion protection C4+, min. 15 years
- 50 mm rock wool insulation (EI 30)
- Protection rating IP23D · Door locks according to DSO specifications
Applicable Standards
AC prefabricated substations
AC metal-enclosed switchgear
Switches above 1 kV
AC circuit-breakers
Disconnectors & earthing switches
VPIS
VDIS
Seismic qualification
LV assemblies – General
Power switchgear assemblies
Public network distribution
Busbar trunking systems
Measuring relays & protection
P Code
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Compact station (non-walk-in)
Configurations
Medium-voltage side (MV)
| C(C)VM | C(C)VM[APT] | |
|---|---|---|
| Grid side | Ring feed-in (optional) | Ring feed-in (optional) |
| Consumer side | 1 outgoing feeder, 1 meter | 1 outgoing feeder, 1 meter |
| Auxiliary power supply | LV-fed | HV-fed |
| Auxiliary transformer | none | < 3 kW |
Low-voltage side (LV)
| C(C)VM | C(C)VMV | C(C)VMVM | |
|---|---|---|---|
| 400 V AC / 220 V DC distribution | 1 | 1 | 1 |
| Communication/control cabinet | 1 | 1 | 1 |
| Metering cabinet | 1 | 1 | 1 |
| UPS (DC 24 V, 8 h) | 1 | 1 | 1 |
Technical Data
- Voltage range: 10–20 kV · Busbar: 630 A
- Insulation: HV metering cabinet air-insulated; switchgear panels: Pure Air
- UPS: DC 24 V, 8-hour system
- Dimensions: C(C)VM 3,000×1,500×2,445 mm · C(C)VM[APT] 3,550×1,500×2,445 mm
- Stainless steel 1.4301, corrosion protection C4+, min. 15 years
- 800 mm concrete basement, pressure-water-tight cable entries (1 bar)
- IP23D · 5° pitched roof
Applicable Standards
AC prefabricated substations
AC metal-enclosed switchgear
Switches above 1 kV
AC circuit-breakers
Disconnectors & earthing switches
VPIS
VDIS
Seismic qualification
Measuring relays & protection
IP Code
Advantages: compact · simplified permitting · fast delivery
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Transformer Station
Specifications
| 10 ft | 20 ft | 3,5 × 8 m | |
|---|---|---|---|
| Transformer rating | 0,5–3,5 MVA | 3,5–5 MVA | 7–14 MVA |
| Voltage | 0,4/0,69/0,8 – 10/20 kV | 0,4/0,69/0,8 – 10/20 kV | 0,4/0,69/0,8 – 10/20 kV |
| MV-RMU | – | optional | optional |
| MV circuit breaker | Standard | optional | optional |
| 690/800 V LV feed-in | – | 1 | 1 |
| 690/800 V LV outgoing feeder | – | 1 | 2 |
| Auxiliary transformer | – | 100 kVA | 100 kVA |
Applicable Standards
Current transformers
Inductive voltage transformers
Low-power instrument transformers
Power transformers – General
Temperature rise
Insulation & dielectric tests
Lightning & switching impulse
Short circuit withstand
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33 kV Scalable Station
Modular Multi-Cabin E-House
Standardized functional cabins fully prefabricated, integrated and tested in the factory.
Your Advantages
- 50–70% shorter construction time – over 90% factory fabrication
- Lower total cost – no concrete casting on site
- Highly controllable quality
- Modular & scalable – freely combinable
- Relocatable & reusable
- High protection rating up to IP54 – dedicated pressure-relief channels
Typical applications: BESS, PV, wind · data centers · grid connection points · temporary power supply
Functional Modules
Protection & control room (Relay House)
Protection, metering and control panels. 5,200 × 3,500 × 3,800 mm · up to IP54
Switchgear room (Switchgear House)
Gas-insulated switchgear, 1–2 feeders, 4–5 outgoing feeders. 6,000 × 3,500 × 3,800 mm
Transformer room (Transformer House)
Z-earthing transformer (zigzag connection) for neutral earthing compensation and auxiliary power. 5,200 × 3,500 × 3,800 mm
Technical Data
- Rated voltage: 33 kV (switchgear 40.5 kV)
- Rated current up to 2,500 A · short-circuit up to 40 kA
- Enclosure: high-strength steel, IP54
- 50 mm rock wool: EI 30, thermal and acoustic insulation · 5° pitched roof
Schaltanlage: ABB ZX2
ABB ZX2 gas-insulated switchgear – metal-enclosed, hermetically sealed stainless-steel gas tanks.
- SF₆-insulated: independent of environment and altitude
- Plug-in busbar connections – no gas work required on site
- Each gas compartment with its own pressure-relief channel
- Up to 70% space saving compared with conventional switchgear
Applicable Standards
AC prefabricated substations
AC metal-enclosed switchgear
Switches above 1 kV
AC circuit-breakers
Disconnectors & earthing switches
VPIS
VDIS
Seismic qualification
Plug-in bushings up to 52 kV
LV assemblies – General
Power switchgear assemblies
Measuring relays & protection
IP Code
Related: These stations are a core component of our BESS turnkey solutions → BESS Turnkey Solutions