KVV vs KVV22 Control Cable: Differences and How to Choose

If you are sourcing control cable from China, you have probably seen both KVV and KVV22 in supplier catalogs — often at noticeably different prices. They look similar on paper, but choosing the wrong one can mean an overpriced installation or, worse, a cable that fails after burial.

This guide explains the differences in plain language, so you can specify the right cable with confidence.

What Is KVV Control Cable?

KVV is a copper conductor, PVC insulated, PVC sheathed control cable rated at 450/750V, manufactured to Chinese standard GB/T 9330. It typically comes with 4 to 61 cores in sizes from 0.75mm² to 10mm².

Its job is transmitting control and measurement signals in industrial automation — connecting control panels, PLCs, relays and instrumentation to the equipment they operate.

Typical applications:

• Indoor control panels and switchgear

• Cable trays and conduit inside factories

• Signal and control wiring for machinery

• Fixed installations with low mechanical stress

The key limitation: KVV has no armour. It is designed for protected, fixed installations — indoors or in trays — not for direct burial or areas with impact risk.

What Is KVV22 Control Cable?

KVV22 takes the same KVV construction and adds one critical layer: steel tape armour (STA) wound between an inner and outer PVC sheath.

That steel armour changes what the cable can handle:

• Direct burial in ground — the armour protects against soil pressure and rocks

• Rodent resistance — rats and termites cannot chew through steel tape

• Mechanical protection — suitable where crushing or impact is possible

• Some tensile reinforcement for tougher pull-in scenarios

The trade-offs are weight, stiffness and price. KVV22 is heavier, has a larger bending radius, and costs more than the equivalent KVV.

KVV vs KVV22: Side-by-Side Comparison

How to Choose: 3 Questions

1. Will the cable be buried or exposed to damage? Yes → KVV22. No → KVV saves you money with easier handling.

2. Are rodents a known problem on site? Farms, food plants and outdoor installations often are. Steel armour is the most reliable (and chemical-free) deterrent — choose KVV22.

3. Do you need to save routing space? KVV bends more tightly and is lighter to install on crowded trays. If the run is protected, there is no engineering reason to pay for armour.

A common practice in real projects: use KVV22 for the underground section entering the building, then KVV inside — armour where you need it, savings where you don't.

A Note for Importers

When comparing quotes, always confirm three things:

1. Copper vs CCA. Some low-priced "KVV" uses copper-clad aluminum conductors. For control circuits, insist on annealed copper — resistance and reliability differ significantly.

1. Armour specification. KVV22 should have proper steel tape, not merely a thicker sheath marketed as "armoured."

1. Certification scope. Check that the CCC certificate covers the exact specification (cores × size) you are ordering, not just the cable family.

At Wuyang Cable, every KVV and KVV22 batch ships with a test report covering conductor resistance, insulation resistance and voltage withstand testing.

Related Products

• Control Cables — KVV / KVV22 450/750V

• RVV Flexible Cable for equipment wiring

Need Help Specifying?

Send us your drawings or a simple description of the installation (indoor/outdoor, buried or tray, number of signal cores) — our engineering team will recommend the most cost-effective option and quote within 24 hours.

Get a quote: www.wycables.com · colin@wycables.com