Brand:

Helukabel NYY-J PVC 0.6/1 kV Power Cable

Description

The Helukabel NYY-J is the standard PVC-insulated, PVC-sheathed 0.6/1 kV power and control cable for fixed installation. Copper conductors, PVC core insulation (DIV4) and a black PVC outer sheath (DMV5) make it a general-purpose feeder cable for plant, distribution boards and building services. NYY-J carries a green-yellow protective conductor from three cores up; NYY-O has none. Part numbers are listed separately for the J and O versions.

Technical specifications

Parameter Specification
Type NYY-J / NYY-O and (N)YY-J / (N)YY-O, 0.6/1 kV
Standard basis NYY-J / NYY-O acc. to DIN VDE 0276-603 / HD 603 S1 / IEC 60502; 7 cores and above acc. to DIN VDE 0276-627 / HD 627 S1
Nominal voltage U0/U 0.6/1 kV; test voltage 4 kV
Temperature range Flexing -5 °C to +50 °C; fixed installation -40 °C to +70 °C; conductor operating temperature +70 °C
Short-circuit temperature Max. 5 s: up to 300 mm² +160 °C; above 300 mm² +140 °C
Minimum bending radius Single-core 15x outer diameter; multi-core 12x outer diameter
Conductor Bare copper, single-wire or multi-wire, DIN VDE 0295 class 1 or 2 / IEC 60228
Core insulation PVC, compound type DIV4 acc. to HD 603 S1
Core identification DIN VDE 0293-308 / 0276-603; 3+1/2 J-version GN-YE (1/2), BN, BK, GY; O-version BU (1/2), BN, BK, GY
Outer sheath PVC, compound type DMV5 acc. to HD 603 S1, black
Fire behaviour Flame-retardant to DIN EN 60332-1-2
Highest permissible voltage DC conductor/conductor 1.8 kV, conductor/earth 0.9 kV; AC single-phase 1.4 kV (both outer conductors insulated) or 0.7 kV (one earthed); three-phase 1.2 kV

Application and limits

Helukabel states that power cables of this type can be installed in open air, underground, in water, in concrete, indoors and in cable ducts, in power stations, industry and distribution boards and in subscriber networks, where mechanical damage is not to be expected. The sheath is unarmoured, so where there is a risk of mechanical damage, routes should use trays with covers, conduit, or an armoured cable type. The cable is cadmium-free and silicone-free.

NYY is flame-retardant but not halogen-free. In enclosed public areas where low smoke is specified, the N2XH halogen-free type is the usual alternative, and for circuit integrity in a fire a FE 180 type is required. Check the cable gland range: for unarmoured cable, a gland such as the CMP A2F for unarmoured cable matches this construction.

Sizes

Part no. (J type / O type) Cores x mm² Outer diameter mm (approx.) Weight kg/km (approx.)
32001 / 32089 1 x 4 re 8.1 115
32005 / 32093 1 x 25 rm 13.7 360
32009 / 32097 1 x 95 rm 19.0 1110
32023 / 32111 3 x 1.5 re 11.5 195
32025 / 32113 3 x 4 re 14.0 340
32029 / 32117 3 x 25 rm 24.0 1320

re is a round single-wire conductor and rm a round multi-wire conductor. Sizes continue to 400 mm² for single-core builds.

Documents and quotation

The Helukabel data sheet is attached (dated 14.06.2024). Seven Star LLC supplies Helukabel cables in Oman against the part number. Quote the core count, cross-section, J or O version and length, together with the project cable standard. See also the electrical and power category.

Datasheets & Documents
  • PDF Datasheet HELUKABEL NYY-J data sheet (PDF, 14.06.2024) Download
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About brand

HELUKABEL is the German manufacturer and supplier of cables, wires and cable accessories, with a range that covers control, power, data, fire-resistant and drag-chain cables. Helmut Luksch and his wife founded the company in 1978 in Hemmingen, near Stuttgart. The name combines the first letters of his first and last name (HElmut LUksch) with the word for cable (Kabel). It has made its own cables since 1988.

Seven Star LLC is an independent supplier in Muscat. We list HELUKABEL control, power, VFD, data and fire-resistant cables and supply them to contractors, panel builders and plants in Oman and the GCC by type, cross-section and length.

HELUKABEL at a glance

Established 1978, Hemmingen near Stuttgart, Germany, by Helmut Luksch
Manufacturing Own production since 1988, starting at the Windsbach plant
Product families Control and power cables, screened VFD motor cables, data and bus cables, fire-resistant and halogen-free cables, flexible rubber and welding cables, cable glands and accessories
Ownership Family-owned, managed by the Luksch family

HELUKABEL cables we list

Cable Type Typical use
JZ-500, JZ-500 HMH, JZ-600-Y-CY Control cables Wiring of machines and panels; HMH is halogen-free, Y-CY is screened
NYY-J, N2XH-J 0.6/1 kV power cables Power distribution; N2XH-J for buildings where halogen-free cable is required
TOPFLEX-EMV-3-PLUS, TOPFLEX-EMV-UV, TOPFLEX 611-C-PUR Screened motor cables Connecting motors to variable speed drives and servo drives with low interference
(N)HXH-FE 180/E 90, JE-H(St)H Bd FE 180 Fire-resistant cables Safety circuits, fire alarm systems and emergency power that must keep working in a fire
PAAR-TRONIC-CY, SUPER-PAAR-TRONIC-C-PUR, OZ-BL-CY Signal and instrument cables Measurement signals, drag chains, and blue-sheathed intrinsically safe circuits
H07RN-F, H01N2-D Rubber cables Mobile equipment, temporary power and arc welding

The code on a European cable describes its build. In NYY-J, N means a standard type, Y a PVC insulation and sheath, and J a green-yellow earth core. In N2XH, 2X is XLPE insulation and H a halogen-free sheath. A C or CY in the name marks a copper braid screen. FE 180 and E 90 are the fire tests: insulation integrity for 180 minutes and circuit function for 90 minutes as an installed system.

Where HELUKABEL cables are used

In Oman and the GCC, HELUKABEL cables are used in oil and gas and process plants, motor control centres and VFD installations, building fire alarm and life safety systems, machinery and cranes, and water and power infrastructure.

Ordering HELUKABEL cables: what we need

Send the cable type, the number of cores and cross-section (for example 4G2.5 or 3x150+70), the length, and whether you need a specific standard or certificate. For fire-resistant cables, add the required test (FE 180, E 30 or E 90).

Facts checked against HELUKABEL company history, October 2026.

Frequently Asked Questions

What does NYY-J mean?
N is a standard-type VDE cable, Y is PVC insulation, the second Y a PVC sheath, and J a green-yellow protective conductor. NYY-O has no protective conductor.
What is the voltage rating?
U0/U 0.6/1 kV with a 4 kV test voltage.
Can NYY be installed underground?
The data sheet lists open air, underground, water, concrete and cable ducts as installation locations where mechanical damage is not expected.
Is NYY halogen-free?
No. It has a PVC sheath and is listed as flame-retardant to DIN EN 60332-1-2; for halogen-free use see N2XH.
What is the maximum conductor temperature?
Permissible operating temperature at the conductor is +70 °C.