Medium-Voltage Switching

MV Modular Cells

Safe switching and protection in medium voltage

Metal-enclosed modular cells are air-insulated switching units designed to switch, measure and protect energy in medium-voltage networks. Built to IEC 62271-200, we supply them to suit every substation architecture across four voltage levels from 12 kV to 40.5 kV, with incoming/outgoing, transformer-protection, circuit-breaker, metering and busbar-riser functions.

MV Modular CellsImage coming soon

Voltage Level12 · 24 · 36 · 40,5 kV

Short-Circuit16 – 20 kA

Reference StandardIEC 62271-200

Product Families

Incoming / Outgoing Cells

SF6 switch-disconnector; distribution over the main busbar and ring (RMU) function.

Transformer-Protection Cells

Fused; fuse length 358 / 508 / 603 mm by voltage.

Circuit-Breaker Cells

M2 E2 C2 class SF6 breaker (10,000 operations) or optional vacuum breaker.

Metering & Busbar Cells

Metering with CT/VT; busbar riser and array extension.

Key Technical Values

Rated Voltage: 12 / 24 / 36 / 40,5 kV
Lightning Impulse: 75 / 125 / 170 / 185 kV
Rated Current: 630 – 1250 A
Short-Circuit (1s/3s): 16 – 20 kA
Making Current: 40 kA tepe
Int. Arc / Service Class: AFL · LSC2A-PI

Application Areas

Distribution substations and ring networks (RMU)
Industrial-plant MV distribution
Solar/wind plant auxiliary and connection points
MV sections inside metal/concrete kiosks and E-Houses
Infrastructure, metro and tunnel projects

Why Powals?

Layered Safety

Mechanical interlock, viewing window, voltage indication and internal-arc venting.

Modular Extension

New function cells add to an existing array once busbar compatibility is met.

Relay Flexibility

Protection relays fitted in the customer's preferred make and model.

Reference Standards

IEC 62271-200M2 E2 C2AFLLSC2A-PI

Certificates and test reports belong to the supplied products and their manufacturers; shared with the quotation file.

Frequently Asked Questions

What is a metal-enclosed modular cell?+

Metal-enclosed, compartmentalised MV cells used for switching, protection and metering in medium-voltage networks, compliant with the TS EN / IEC 62271 series.