KVV PVC Control Cable
KVV-450/750V
The standard unscreened PVC control cable for switchgear, MCC cubicles and plant interlocks.
PVC Control Cable
The K family of PVC control cable is the default wiring material inside Chinese-built switchgear, MCC line-ups and plant control panels. Rated 450/750 V and built to GB/T 9330, it
The K family of PVC control cable is the default wiring material inside Chinese-built switchgear, MCC line-ups and plant control panels. Rated 450/750 V and built to GB/T 9330, it covers 2 to 61 cores in 0.75–10 mm², with the type suffix telling you exactly what sits between the copper and the sheath: nothing for KVV, a copper wire braid for KVVP, a copper tape for KVVP2, Class 5 flexible stranding for KVVR, or XLPE insulation for KYJV.
Choosing between those five is mostly a question of EMC and temperature. A braid screen suits a run alongside a motor feeder or a VFD; a tape screen suits a fixed RF-sensitive run where budget matters; flexible stranding suits machine-tool carriers and door harnesses. Voltcore produces all five on dedicated lines at its Yixing plant, with ZR flame-retardant and WDZ low-smoke halogen-free sheath compounds available on every one.
5 constructions in PVC Control Cable
KVVP Copper Braid Screened Control Cable
KVVP-450/750V
Braid-screened control cable with a low-resistance shield path for VFD leads and long analogue runs.
KVVP2 Copper Tape Screened Control Cable
KVVP2-450/750V
Copper tape screen at 100 % coverage for fixed runs that must reject high-frequency interference.
KVVR Flexible Control Cable
KVVR-450/750V
Class 5 fine-wire conductors for control circuits that move, bend or vibrate.
KYJV XLPE Insulated Control Cable
KYJV-450/750V
XLPE insulation for control circuits in hot plant, high fault levels and long de-rated runs.
Braid screen or tape screen — which one for my panel?
KVVP carries a braid of 0.12–0.20 mm copper wires at 80–90 % coverage; KVVP2 wraps a 0.05 mm copper tape at effectively 100 % coverage. The difference that matters on site is not the coverage figure but the resistance of the shield path: a braid offers a low-resistance drain route, which is what suppresses the 2–20 kHz common-mode current a VFD pushes into the motor cable.
Tape wins on high-frequency performance and on price, because a continuous foil has no apertures and uses less copper. It is the right screen for fixed installation inside a panel or a rack where the cable is never flexed after termination. Where the cable must move, or where the circuit is an analogue loop within a few metres of a drive, specify the braid.
- VFD output and motor leads: KVVP with a tinned copper drain wire and 360° termination at both ends.
- Fixed data and telemetry runs in a rack: KVVP2, cheaper and better above 1 MHz.
- Repeated flexing: braid only — copper tape work-hardens and tears at the bend.
- Where both are needed: foil plus braid composite screen, supplied on request.
When should I move from PVC to XLPE control cable?
PVC/A insulation is rated 70 °C continuous with a 160 °C short-circuit limit for 5 s, which covers most cubicle and plant wiring. KYJV replaces it with cross-linked polyethylene rated 90 °C continuous and 250 °C short-circuit, so the same cross-section carries more current or survives a fault with more margin.
The second reason is ambient heat. A cable tray on a Middle East roof or inside a steel mill can sit above 60 °C ambient, and de-rating a PVC cable into that environment often forces a size increase that costs more than the XLPE upgrade. Where the circuit is long and the load is inductive, check voltage drop before deciding.
- Continuous conductor temperature above 70 °C, or fault levels near the PVC 160 °C limit: use KYJV.
- Long 24 V DC or 120 V AC solenoid runs where voltage drop governs: XLPE allows a higher conductor temperature but does not reduce resistance.
- Standard cubicle interlocking, annunciator panels and relay racks: PVC KVV remains the economical choice.
- Fire performance: specify ZR-KVV (GB/T 19666) or WDZ-KVV rather than changing insulation type.
How many spare cores should I specify?
Control cables are usually installed once and modified many times, so core count deserves more thought than cross-section. A common rule on plant projects is 20 % spare cores, with a minimum of two spares on any cable above 7 cores; panel builders often standardise on 12-core and 19-core constructions so that one drum covers several drawings.
Cross-section is governed by voltage drop and by terminal capacity rather than by current alone. A 1.5 mm² core at 20 °C has a maximum resistance of 12.1 Ω/km, so a 200 m run of a 24 V DC solenoid drawing 2 A drops roughly 9.7 V across the pair unless you go up to 2.5 mm².
- Spare cores: 20 % of active cores, minimum two, terminated and identified at both ends.
- Long 24 V DC circuits: calculate drop on the loop length, not the cable length.
- Standardising on 1.5 mm² and 2.5 mm² keeps termination tooling and bootlace ferrules to two sizes.
- Core identification: numbered print, DIN 47100 colour sequence, or a customer-specific colour list.
Request pricing across PVC Control Cable
Include cross-section, core count, voltage grade, route length and installation method — those five determine price more than anything else on the page.
- Engineer-reviewed before pricing
- Reference drawings issued with the quotation
- Free sample up to free sample up to 5 m