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U/UTP - twisted-pair cable (unshielded)

U/UTP twisted-pair cable for structured cabling systems.

Designed to transmit signals with a frequency of up to 500 MHz (category 6a) in networks according to ISO/IEC 11801 with an operating AC voltage up to 145V.

Structure
  1. Current-carrying copper conductor;
  2. Conductor insulation;
  3. Cable sheath;
  4. Crossing (for cable with category above 5e);
  5. Rip-cord.
01
Current-carrying copper conductor
02
Conductor insulation
03
Cable sheath
04
Rip-cord
05
Crossing (for cable with category above 5e)
01
02
03
04
05
  1. Current-carrying copper conductor
  2. Conductor insulation
  3. Cable sheath
  4. Rip-cord
  5. Crossing (for cable with category above 5e)

Resistance to EFA

Type of EFA
EFA Characteristics
EFA Value
High ambient temperature:
for indoor cables;
for outdoor cables;
High operating temperature, °C
60
60
Low ambient temperature:
for indoor cables;
for outdoor cables;
Low temperature, °С

minus 20
minus 40
High humidity Relative humidity at temperature up to 35 °С,%
98

Physical and mechanical parameters of insulation and sheath

Parameter name
Normal value
Insulated current-carrying conductor elongation at rupture, % (min.) 22
Insulation elongation at rupture, % (min.) 100
Maximum breaking load for cable with 4 or more pairs, N (min.) 400
Crushing load, N/cm (min.) 40
Radius bend, outer diameters - with single-wire conductors 6

Conductor equivalent cross-section and the corresponding AWG (American Wire Gauge System) value

AWG, number
Equivalent cross-section, mm2
AWG 27 0,102
AWG 28  0,128
AWG 25 0,163
AWG 24 0,205
AWG 23 0,259
AWG 22 0,325

Designation of cable sheath materials

Sheath designation
Sheath material
PVC Flame-retardant PVC compound
PE UV-resistant polyethylene
LSZH Self-extinguishing low-smoke zero halogen composition

Electrical parameters for twisted-pair cables

Characteristics UoM
Frequency MHz
Cat. 3
Cat. 5
Cat. 5е
Cat. 6
Cat. 6а
Wave propagation velocity, min. %
1
10
100
-
-
-
65
65
65
65
65
65
68
68
68
68
68
68
Signal delay, max.
ns/100м 10 650 555
555 548  548 
Signal delay difference between pairs ns/100м 10 57 50 50 50 50
DC resistance unbalance of conductors in a pair/quad, max. 0 3 3
3 2 2
Operating capacitance of pair, max. nF/km 0,001 56 56 56 56 56
Insulation resistance to direct current, min. MOhm*km 0 100 100 100 100 100
Test DC voltage for 1 min. kV 0 1,0 1,0 1,0 1,0 1,0
Characteristic impedance
Ohm 0,064-1,0
1,0-250
250-1000
100±25 100±25
100±15
100±25
100±15
100±25
100±15
100±25
100±15
Near-end crosstalk attenuation between pairs (NEXT), min. dB/100 m
1
16
100
250
500
600
1000
40,1
21,1
64,2
45,2
32,3
64,2
45,2
32,3
65,0
54,6
41,8
35,3
65,0
54,6
41,8
35,3
29,2
Total near-end crosstalk attenuation between pairs (PS NEXT), min. dB/100 m
1
16
100
250
500
600
1000
  57,0
42,2
29,3
57,0
42,2
29,3
62,0
52,2
39,3
32,7
62,0
52,2
39,3
32,7
26,4
Attenuation value (insertion loss) dB/100 m 1
16
100
250
500
600
1000
4,0
12,2
4,0
7,7
20,4
4,0
7,7
20,4
4,0
7,1
18,5
30,7
4,0
7,0
17,8
28,9
42,1
Return loss
dB/100 m 1
16
100
250
500
600
1000
15,0
15,0
19,0
19,0
12,0
19,0
19,0
12,0
21,0
20,0
14,0
10,0
21,0
20,0
14,0
10,0
8,0


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