Questions — Answers
In cables with cross-linked polyethylene (XLPE) insulation for medium and high voltage, the figure after the “/” indicates the screen cross-section in mm². This is regulated by the technical specifications (TU) under which the cables are manufactured.
Please see the table of XLPE cable analogs.
The maximum manufacturing length of a cable depends on its design and production technology. Several manufacturing lengths may be wound onto a single drum. For some cables, the maximum length is limited by the drum’s capacity
The flexibility class of a cable is a characteristic that indicates how flexible the conductor is and how well it withstands bending without damage.
In simple terms: it describes how “soft” or “rigid” the cable is.
Main classes:
- Class 1 — rigid (solid conductor, barely bends)
- Class 2 — low flexibility
- Classes 3–4 — medium flexibility
- Classes 5–6 — highly flexible (stranded conductors)
Where it matters:
- for installation in switchboards and walls (usually Class 1–2)
- for movable connections, equipment, and extension cords (Class 5–6)
Class 5–6 flexibility cables are the most flexible cables with stranded (fine-wire) conductors. They are used wherever there is constant bending, movement, or vibration.
Examples of cable brands (Class 5–6):
Most common:
- PVS — PVC-insulated connecting wire (highly flexible; household use and equipment)
- KG (KGn) — flexible cable (for industry and construction sites)
- ShVVP — flat cord (extension cords, household appliances)
More specialized:
- H07RN-F — European rubber flexible cable (equivalent to KG)
- NYM (stranded version) — sometimes available in increased-flexibility options
- PuGV (PV-3) — flexible installation wire (often Class 5)
Where they are used:
- power tools
- extension cords
- portable equipment
- connection of movable mechanisms
- switchboards (for ease of installation)
Important:
- Class 5 — standard high flexibility (most common)
- Class 6 — even more flexible, used less often (specialized equipment, robotics)
Products are delivered via “Nova Poshta” and “Delivery” courier services, as well as by the company’s own transport.