Power cables with PVC insulation 0,66 kV – NYY, NYM, NYBY, NAYY, NAYBY

Cables are designated for power supply and distribution in fixed installations with rated AC voltage 0.66 kV at frequency 50 Hz at ambient temperature from -50 °C to +50 °C and relative humidity up to 98% at temperature up to 35 °C, cables are intended for laying in outdoors including. NYM and NAYY-J cables are designated for fixed connection to electric devices at nominal AC voltage up to 0.66 kV at frequency 50 Hz. Cables are used for connection to devices requiring input sealing.

Description

Cables are designated for power supply and distribution in fixed installations with rated AC voltage 0.66 kV at frequency 50 Hz at ambient temperature from -50 °C to +50 °C and relative humidity up to 98% at temperature up to 35 °C, cables are intended for laying in outdoors including. NYM and NAYY-J cables are designated for fixed connection to electric devices at nominal AC voltage up to 0.66 kV at frequency 50 Hz. Cables are used for connection to devices requiring input sealing.

CONDUCTORS
Copper or aluminum round single-wire or multicore conductors (class 1 in accordance with IEC 60228(2004).

INSULATION AND OVERSHEATH
Insulation and oversheath are made from polyvinylchloride (PVC) compound.

COVERING
IN ACCORDANCE WITH IEC 60229 Armour is made from 2 galvanized steel tapes and PVC compound oversheath is applied over wrapping.

Technical specifications

Insulation resistance calculated for 1 km at temperature 20 °C:

Insulation resistance calculated for 1 km at
temperature 20 °C indicated at protractedly
permissible temperature for the conductors
heating at operational period at least
0.005 MOhm.
Cables endure AC 3.0 kV test and 50 Hz
frequency during 10 minutes.
Cables are flame retardant with a single
laying.
Manufactured cable length:
– manufactured cable length must be min.

450 m for cables with main conductor crosssection
1.5-16 mm²;
– manufactured cable length must be min.
300 m for cables with main conductor crosssection
25-50 mm².
Minimal temperature of cable laying without
pre-heating: – 15 °C.
Minimum permissible bending radius of the
cable at installation and routing must equal
to min. 10 outer diameters of the cable for
single-core cable, and min.7.5 outer diameters
of the cable – for multicore cables.
 

Permissible current loads and permissible short-circuit currents for cables with copper conductors:

*The same and for four-core cables with neutral conductor lower cross-section. For determining of current loads (four-core cables) which are
equal to cross-section of four-wire networks in all loads in normal mode this loads must be multiplied by 0.93 coefficient.

Permissible current loads and permissible short-circuit currents for cables with aluminum conductors:

*The same and for four-core cables with neutral conductor lower cross-section. For determining of current loads (four-core cables) which are
equal to cross-section of four-wire networks in all loads in normal mode this loads must be multiplied by 0.93 coefficient.

More information and other cable inquiry, pls contact Vivian Yuan as follows:

Vivian Yuan
Mobile: +86 158 3829 0725