Heat-resistance Fire-proof Cable Special Cable Used for Power Transmission at High Temp

Type

Designation

NHFF

Cu core fire-proof & insulation layer heat-resistance fire-proof cable

NHFF22

Cu core fire-proof & insulation layer steel tape armored heat-resistance fire-proof cable

NHFF32

Cu core fire-proof & insulation layer steel wire armored heat-resistance fire-proof cable

NHFPF

Cu core fire-proof & insulation layer heat-resistance shield fire-proof cable

NHFPF22

Cu core fire-proof & insulation layer steel tape armored heat-resistance shield fire-proof cable

NHFPF32

Cu core fire-proof & insulation layer steel wire armored heat-resistance shield fire-proof cable

Item

Unit

Technical performances

D.C. Resistance of conductor (20)≤

Ω/km

mm2 section

0.5

0.75

1.0

1.5

2.5

4

6

10

16

25

35

50

70

95

120

Resis-

tance

36

24.5

18.1

12.1

7.4

4.61

3.08

1.83

1.15

0.727

0.524

0.387

0.268

0.193

0.153

Test voltage

kV/1min

450/750V Test Voltage 2.5KV

600/1000V Test Voltage 3.5KV

Insulation resistance≥

MΩ·km

100

Fire-resistance feature

Grade A (Flame temp 1000℃ 90min?test 3A fuse wire not break)

Item

Code

Explanation

Series code

NH

Fire-proof cable

Insulating material

F

Fire-proof insulating material

Shielding material

/

P

No shield to be omitted

Tin-plated woven Cu wire

Sheath material

F

?(F46) F46