Description to Flame-retardant and Fire Resistant Wires & Cables

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Product Description:

Flame-retardant  and fire resistant wires and cables include product with halogen,  without halogen, low smoke etc. These are suitable for the places that  have a high requirement for the fireproofing.

Description of the type composition

The  name of the flame-retardant and fireproof wire and cable is consisted  of the code of the burning characteristic and the code of the  specification.

 

 

Sample of the description

Sample  1: cable with copper core PE insulation, copper wire braid twisted  shielding, PVC sheath category C flame retardant computer cable, 4  pairs, with cross-section of 1.0 mm2 with voltage of 300/500Vshall be expressed as ZC-DJYPV  4×2×1.0;

Sample 2: control cable with PVC and insulation and sheath fire resistant, 7 core and with cross-section of 1.0 mm2 shall be expressed as N-KVV  450/750V  7×1.0;

Sample  3: power cable with XLPE insulation LOSH category B flame retardant PO  sheath with voltage of 0.6/1kV, 3+1 core, with cross-section of the main  core of 95 mm2 and with cross-section of the earthing core of 50 mm2 hall be expressed as WDZB-YJY  0.6/1kV  3×95+1×50;

Sample  4: fire resistant power cable with XLPE insulation LOSH category B  flame retardant PO sheath with voltage of 6/10kV, 3 core, with nominal  cross-section of 150 mm2 hall be expressed as WDZBN-YJY  6/10kV  3×150.

Flame-retardant characteristics

1Application  characteristics: The fire will not spread when the product gets fire.  It is suitable for nuclear power plants, underground establishments,  tunnels, tall buildings and broadcast & television stations etc.

2The single flame-retardant performance should comply with the table 2 below.

  Table 2: flame-retardant characteristics requirement for the single core cable

code

mm

time of giving fire

s

qualified requirement

test method

Z

D≤25

25<D≤50

50<D≤75

D>75

60

120

240

480

the burnt range shall not be out of 50mm to 540mm to the soffit of the upper nip

IEC60332-1

GB/T18380.1

GB/T18380.2

3The bundle flame-retardant characteristic should comply with regulation of table 3 below.

Table 3: Requirements for the bundle flame-retardant characteristic

code

non-metal material volume of the sample

L/m

time of giving fire

s

qualified requirements

test method

ZA

ZB

ZC

ZD

7

3.5

1.5

0.5

40

40

20

20

①carbonized part can not be out of 2.5 m up to the down side of the muzzle

②time of burning with flame in the sample shall not exceed 1 hour after stopping giving fire.

IEC60332-3

GB/T18380.3




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