CTC-1000 SERIES
Optical Cable Tensile Testing Machine
Standard / Testing Method: IEC 60794-1-21 E1, EN 187000 Method 501, EIA/TIA-455-33, FOTP-33, IEEE 1222
Objective
This test method applies to optical fiber cables that are subjected to a specified tensile load to evaluate the relationship between optical attenuation and fiber elongation strain under tension. The purpose is to simulate mechanical loads that may occur during installation and/or operation of the cable.
Sample
The test specimen shall be an optical cable with a minimum length of 50 meters. Additional cable length is required to connect the test fibers to the measuring instruments.
Apparatus
The test setup consists of:
Attenuation measuring equipment, typically an OTDR (supplied by the customer).
Fiber elongation strain measurement equipment, based on dispersion testing methods.
A specialized tensile testing machine capable of tensioning cables of at least 50 meters in six legs, equipped with:
A motor-driven system for controlled tensioning.
A load cell for accurate measurement of the applied tension.
Procedure
The cable is wound onto the machine using appropriately sized sheaves, with both ends extending to the measuring instruments.
A pre-determined number of fibers within the cable are spliced together to form continuous optical paths. Typically, two sets of fibers are used — one for attenuation measurement and the other for elongation monitoring.
After completing initial measurements and calibration, the cable is tensioned at a specified rate until the target load is reached.
The cable remains under tension for the duration defined in the test specification, after which attenuation and fiber length are re-measured.
This process may be repeated at multiple tension levels to characterize the full tensile behavior of the cable, or performed at a single maximum allowable tension level.
Pass / Fail Criteria
- Attenuation Change: Under load, the increase in optical attenuation shall not exceed 0.05 dB over the measured fiber length.
- Fiber Elongation: Under load, the fiber elongation shall not exceed 0.25% of its initial length (typical installation load limit).
Knowledge
Standard / Testing Method: IEC 60794-1-21 E1, EN 187000 Method 501, EIA/TIA-455-33, FOTP-33, IEEE 1222
Objective
This test method applies to optical fiber cables that are subjected to a specified tensile load to evaluate the relationship between optical attenuation and fiber elongation strain under tension. The purpose is to simulate mechanical loads that may occur during installation and/or operation of the cable.
Sample
The test specimen shall be an optical cable with a minimum length of 50 meters. Additional cable length is required to connect the test fibers to the measuring instruments.
Apparatus
The test setup consists of:
Attenuation measuring equipment, typically an OTDR (supplied by the customer).
Fiber elongation strain measurement equipment, based on dispersion testing methods.
A specialized tensile testing machine capable of tensioning cables of at least 50 meters in six legs, equipped with:
A motor-driven system for controlled tensioning.
A load cell for accurate measurement of the applied tension.
Procedure
The cable is wound onto the machine using appropriately sized sheaves, with both ends extending to the measuring instruments.
A pre-determined number of fibers within the cable are spliced together to form continuous optical paths. Typically, two sets of fibers are used — one for attenuation measurement and the other for elongation monitoring.
After completing initial measurements and calibration, the cable is tensioned at a specified rate until the target load is reached.
The cable remains under tension for the duration defined in the test specification, after which attenuation and fiber length are re-measured.
This process may be repeated at multiple tension levels to characterize the full tensile behavior of the cable, or performed at a single maximum allowable tension level.
Pass / Fail Criteria
- Attenuation Change: Under load, the increase in optical attenuation shall not exceed 0.05 dB over the measured fiber length.
- Fiber Elongation: Under load, the fiber elongation shall not exceed 0.25% of its initial length (typical installation load limit).
Typical Applications
Tension (Outdoor Cable)
Tension (Indoor Cable)
Tension (Outdoor Cable)
Tension (Indoor Cable)
Indoor cables
Videos
for optical fibre cables (IEC 60794-1-2, IEC 60794-1-21, IEC 60794-1-22, IEEE 1222)
