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ZORA CAT5 Indoor 25-pair Large Logarithmic Cable

ZORA CAT5 Indoor 25-pair Large Logarithmic Cable is widely used in the construction of LAN, MAN communication network, mainly used for building voice system vertical trunking, large-pair twisted-pair cable is an indispensable link in the building backbone, combined with 110 distribution frame equipment, can realize voice or data transmission and wiring.
  • ZRC501025

  • ZORA

Availability:

Product Description


ZORA Cat5 Indoor 25-pair Large Logarithmic Cable Description

ZORA CAT5 Indoor 25-pair Large Logarithmic Cable is widely used in the construction of LAN, MAN communication network, mainly used for building voice system vertical trunking, large-pair twisted-pair cable is an indispensable link in the building backbone, combined with 110 distribution frame equipment, can realize voice or data transmission and wiring.


ZORA Cat5 Indoor 25-pair Large Logarithmic Cable Features

1、Type: UTP large logarithmic cable, reel packing 305 meters/spool;

2、Wire gauge: 24AWG; copper core material is oxygen-free copper;

3、Insulation: high quality PE material;

4、Sheath requirements: high-quality PVC material;

5、Cable specification: 25/50/100 pairs optional;

6、Sheath color: gray;

7、Characteristic impedance: 100 ± 15Ω;

8、Conforms to the standard: YD/T322-2013.


Reference Standard

  • YD/T322-2013

  • ANSI/TIA 568.2-D

  • ISO/IEC 11801


Ordering Information

Product Number

Product Name

Outer sheath

Color

Length Qty

Qty / Pallet

ZRC501025

CAT5 Indoor 25-pair Large Logarithmic Cable

PVC

gray

305Mtr Reel

4or8

Technical Specifications

Construction


1.Conductor(mm)

Solid bare copper 24AWG  

ZORA CAT5 Indoor 25-pair Large Logarithmic Cable section

2.Insulation(mm)

HDPE 0.88±0.05

3.Color Code

1 White/Blue, 2 White/Orange, 3 White/Green, 4 White/Brown, 5 White/Gray, 6 Red/Blue, 7 Red/Orange, 8 Red/Green, 9 Red/Brown, 10 Red/Gray , 11 Black/Blue, 12 Black/Orange, 13 Black/Green, 14 Black/Brown, 15 Black/Gray 16 Yellow/Blue, 17 Yellow/Orange, 18 Yellow/Green, 19 Yellow/Brown, 20 Yellow/Gray 21 Purple/Blue, 22 Purple/Orange, 23 Purple/Green, 24 Purple /Brown, 25 Purple/Gray

4.linear sequence

-----

5.Wrapping

PET tape

6.Rip cord

Yes

7.Jacket(mm)

Material

PVC or LSZH available


Nom.thickness

1.2±0.1


Color

Gray


Nom.diameter

11.5±1.0


Mechanical characteristics

Operating temperature

-20~60℃

Installation temperature

0~60℃

Elongation at break of the conductor

≥15%

Insulation elongation at break

≥300%

Insulation Tensile Strength

≥16MPa

Sheath tensile strength before aging

≥13.5MPa

Sheath tensile strength after aging(100℃±2℃,168h)

≥12.5MPa

Tensile strength change rate after sheath aging

±20%

Sheath elongation at break before aging

≥150%

Sheath elongation at break after aging(100℃±2℃,168h)

≥125%

Sheath elongation change at break after aging

±20%

Insulated wire core broken, mixed wire

not breaking the line and not mixing it up


Electrical characteristics(20℃)

Characteristic impedance

100±15Ω

Single conductor DC resistance

≤9.5Ω/100m

DC resistance imbalance within the wire pair

≤2.0%

Dielectric strength DC between conductors

1000V,1min No breakdown

Operating Capacitance

≤5.6nF/100m

Electrical insulation resistance

≥5000MΩ·km +20℃ DC (100-500)V



ZORA Cat5 Indoor 25-pair Large Logarithmic Cable FAQ

1: What is ZORA Cat5 Indoor 25-pair Large Logarithmic Cable?

 This is an indoor-rated Category 5 (Cat5) unshielded multi-pair cable with 25 twisted pairs (50 conductors), designed for voice communications (e.g., analog phones) or low-speed data backbone cabling. Ideal for vertical risers and horizontal distribution in offices or hotels.

2: What are the maximum speed and distance?

Voice: Supports analog/VoIP up to 800 meters (unrepeated).

  • Data: Supports 100Mbps Ethernet (100BASE-TX) up to 100 meters.

3: Can it support Gigabit Ethernet?

 Not recommended. While Cat5 may handle 1Gbps over short distances, performance is unreliable. Use Cat5e or higher for Gigabit networks.

4: Installation precautions?

Bend radius: Minimum ≥4× cable diameter (~25mm).

  • Cable ties: Use Velcro to avoid deformation.

  • Environment: Indoor dry areas only; avoid direct sunlight or moisture.

5: Does it support PoE?

 Supports 802.3af (15.4W) PoE with proper pair allocation (pairs 1/2, 3/6). Can power multiple PoE devices but requires total load calculation.

6: How are pairs color-coded?

 Standard 25-pair color code:

  • Major colors: White, Red, Black, Yellow, Purple

  • Minor colors: Blue, Orange, Green, Brown, Slate
    Each pair combines major + minor colors (e.g., White/Blue).

7: How to test connectivity?

Voice lines: Use a tone generator/probe.

  • Data lines: Test via RJ45 modules with a cable tester (8-conductor groups).

8: Is it compatible with Cat5e/Cat6 devices?

 Physically compatible, but data performance is limited to Cat5. Separate voice/data cabling is recommended.

9: Is the jacket fire-resistant?

 Yes. CMR-rated PVC jacket complies with UL 1666 for vertical risers.

10: Typical applications?

PBX telephone backbones.

  • Security system audio transmission.

  • Voice risers between office floors.


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