Everything you need, all in one place
Here you will find all the information and resources related to our products. If you need additional information or have any questions, contact our support team through the inquiry form.
Manuals
Networks, network electronics
Regulations
Low voltage
ICT
(Regulatory regulation of telecommunication infrastructures).
Certifications
Cervi Catalog
DoP. Declaration of Performance
Material Behavior
Material Type
Temp ºC Maximum
Temp ºC Minimum
Weather resistance
Oil resistance
Acid resistance
Resistance to hydrocarbons
Mechanical resistance
Water resistance
PVC Acrylic
+70
-30
Excellent
Good
Good
Regular
Good
Excellent
Polyvinyl chloride
+70/+80
-20/-50
Good
Regular
Good
Bad
Regular
Excellent
PVC 105º
+90/+105
-20
Good
Regular
Good
Bad
Regular
Excellent
Polyethylene
+80
-60
Good
Regular
Good
Bad
Good
Excellent
Cellular polyolefin
+100
-50
Good
Regular
Excellent
Bad
Good
Excellent
Polypropylene
+105
-40
Good
Regular
Excellent
Bad
Good
Excellent
Poliuretano
+75
-40
Acceptable
Excellent
Bad
Excellent
Excellent
Acceptable
Silicone
+180/+250
-60/-100
Acceptable
Regular
Acceptable
Regular
Deficient
Good
EFTE Teflon
+150
-70/-200
Good
Excellent
Excellent
Excellent
Excellent
Excellent
FEP Teflon
+200
-70/-200
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
PFA Teflon
+260
-70/-200
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Polyolefin FRLSHF
+80
-25
Acceptable
Regular
Regular
Regular
Acceptable
Regular
Polyamide
+115
-70
Good
Excellent
Deficient
Good
Good
Acceptable
Nitrile rubber
+75
-40
Excellent
Good
Good
Regular
Good
Good
Cross-linked polyethylene
+90
-50
Good
Regular
Good
Bad
Good
Excellent
Cervi drums
Characteristics
| Code Item | Type drum | Diameter “D” (mm) | Diameter “d” (mm) | Width “A” (mm) |
|---|---|---|---|---|
| 2416941I | 600 | 630 | 300 | 370 |
| 2416951I | 800 | 800 | 400 | 500 |
| 2416961I | 1000 | 1000 | 500 | 600 |
| 2416971I | 1220 | 1220 | 1600 | 700 |
| 2416981I | 1400 | 1400 | 700 | 800 |
| 2426991I | 1600 | 1600 | 900 | 980 |
| Cable diameter (mm) | Drum 600 | Drum 800 | Drum 1000 | Drum 1200 | Drum 1400 |
|---|---|---|---|---|---|
| 5 | 3097 | 7072 | 12914 | 21675 | 33354 |
| 6 | 2151 | 4911 | 8968 | 15042 | 23163 |
| 7 | 1580 | 3608 | 6589 | 11058 | 17017 |
| 8 | 1210 | 2763 | 5044 | 8467 | 13029 |
| 9 | 956 | 2183 | 3986 | 6690 | 10294 |
| 10 | 774 | 1769 | 3228 | 5419 | 8339 |
| 11 | 640 | 1461 | 2668 | 4478 | 6891 |
| 12 | 538 | 1228 | 2242 | 3763 | 5791 |
| 13 | 458 | 1046 | 1910 | 3206 | 4934 |
| 14 | 395 | 902 | 1647 | 2765 | 4254 |
| 15 | 344 | 786 | 1435 | 2804 | 3706 |
| 16 | 302 | 691 | 1261 | 2117 | 3257 |
| 17 | 268 | 612 | 1117 | 1875 | 2885 |
| 18 | 239 | 546 | 996 | 1672 | 2754 |
| 19 | 214 | 490 | 894 | 1501 | 2310 |
| 20 | 194 | 442 | 807 | 1355 | 2085 |
| 21 | 176 | 401 | 732 | 1229 | 1891 |
| 22 | 160 | 365 | 667 | 1120 | 1723 |
| 23 | 146 | 334 | 610 | 1024 | 1576 |
| 24 | 134 | 307 | 560 | 941 | 1448 |
| 25 | 124 | 283 | 517 | 867 | 1334 |
| 26 | 115 | 262 | 478 | 802 | 1234 |
| 27 | 106 | 243 | 443 | 743 | 1144 |
| 28 | 99 | 226 | 412 | 691 | 1064 |
| 29 | 92 | 210 | 384 | 644 | 991 |
| 30 | 86 | 196 | 359 | 602 | 927 |
| 31 | 81 | 184 | 336 | 564 | 868 |
| 32 | 76 | 173 | 315 | 529 | 814 |
| 33 | 71 | 162 | 296 | 498 | 766 |
| 34 | 67 | 153 | 279 | 469 | 721 |
| 35 | 63 | 144 | 264 | 442 | 681 |
| 36 | 60 | 136 | 249 | 418 | 643 |
| 37 | 27 | 129 | 236 | 396 | 609 |
| 38 | 54 | 122 | 224 | 375 | 577 |
| 39 | 51 | 116 | 212 | 356 | 548 |
| 40 | 48 | 111 | 202 | 339 | 521 |
| 45 | 38 | 87 | 159 | 268 | 412 |
| 50 | 31 | 71 | 129 | 217 | 334 |
*The capacities stated in this document are calculated in a perfect winding. When the winding is not completely regular, a reduction of 20% of the indicated length may be applied. Dimensional values are approximate.
FAQs
What is a coaxial cable?
A data transmission cable consisting of two coaxially oriented conductors separated by a layer of dielectric insulation.
The structure of a typical coaxial cable would be based on a core composed of a metal wire surrounded by an insulator called dielectric. This insulation is protected by a metal mesh (foil or braid) and the entire cable is wrapped in a protective outer jacket, thus protecting the cable from moisture and impurities.
What is a structured cabling system?
It is the physical support for servicing any type of active equipment infrastructure, regardless of the manufacturer, technology and topology used in a data network. All sockets are identically wired in a star configuration.
Benefits:
– One-time installation of cable and passive elements
– Supports the needs of most applications
– One single infrastructure supports all enterprise voice and data applications
– Full installation flexibility
– Long-term cost savings
What is a shielded cable?
A shielded cable is a type of cable covered by a metallic mesh or tube, which acts as a Faraday cage to prevent the coupling of noise and other interferences, both from the environment to the cable and from the cable to the environment.
The shield does not have to be unique, and a cable may contain several shielded conductors inside it, to avoid interference (crosstalk) between them.
For the shield to be effective, it should be connected to ground at only one end of the cable, to avoid current flowing through it that could couple to the signal wires, producing a counterproductive effect.
What is fiber optics?
Optical fiber is a transmission medium, commonly used in data and telecommunication networks, consisting of a very thin strand of transparent glass material through which light pulses representing the data to be transmitted are sent. The light beam is completely confined and propagates inside the fiber with a reflection angle above the limit angle of total reflection, according to Snell’s law. The light source can come from a laser or an LED diode.
Fibers are widely used in telecommunications, since they allow sending large amounts of data over a long distance, with speeds similar to those of radio and higher than those of a conventional cable. They are the most advanced cable transmission medium, being immune to electromagnetic interference, and are also used for local networks where it is necessary to take advantage of the benefits of optical fiber over other transmission media.
Main characteristics of optical fiber
– High transmission speed for voice, data, video,…
– Reduced transmission error percentage
– Immunity to EMI or radiofrequency: Possibility to coexist with any electrical installation and in any environment, no matter how noisy it may be, also avoiding any problem associated with potential differences.
– Resistance to corrosion, fire,…
– Reduced dimensions and weight (comparable to a human hair): The outer diameter of an optical fiber can be 250, 500 or 900 microns (millionths of a meter) depending on the mechanical protection used.
