Building the Next Generation Network Infrastructure

PCM E1

This cable covers the requirements of high density polyethylene insulated, twist pair, overall foil screen,
copper tape shielded and Low Smoke Free Halogen sheath for digital exchanges and PCM E1 equipment
carrier systems.


Electrical Characteristics at 20℃

Item\Conductor Diameter

(mm)

0.4

0.5

Conductor Resistance(20)

Ω/km

Max.157.0

Max.100.2

Dielectric Strength(V/1 min.)

Conductor-Conductor

D.C 1000V or A.C 700V (r.m.s)

Conductor-Screen

D.C 1500V or A.C 1000V (r.m.s)

Min. Insulation Resistance 

MΩ-km

Min.5000

Mutual Capacitance (1KHz) 

nF/km

Max. 50

Attenuation (at 1024 KHz)

dB/km

1P: Below 42.5

Above 1P: 25.0

1P: below 34.0

Above 1P: 20.0

Near-end crosstalk attenuation(at 1024 KHz)

dB

A.C. 360/2 (R.M.S)D.C. 50/1

Characteristic Impedance( at 1024 KHz)

Ω

120 ±10

Conductor Ground

(V/sec.)

60

 

UTP Type

STP Type

0.4, 0.5mm

Conductor: Tinned copper wire

0.4, 0.5mm

Conductor: Tinned copper wire

InsulationFoam-skin polyethylene

InsulationFoam-skin polyethylene

Twinning: Two insulated conductors are twisted into a pair.

Twinning: Two insulated conductors are twisted into a pair.

-

Individually Screening: Polyester tape

Drain wire: Aluminum-Polyester tape

Cable formation: Layer type

Cable formation: Unit type

Polyester tape

Aluminum-Polyester tape

Drain wire

Drain wire

Annealed copper type

Aluminum-Polyester tape

Polyester tape

-

LSFH Sheath

LSFH Sheath