Standard of TT-OFT360 Optical Fiber Cable Torsion Testing Machine
IEC 60794-1-2-E7
Technical Specifications of TT-OFT360 Optical Fiber Cable Torsion Testing Machine
| Model | Optical Fiber Cable Torsion Testing Machine |
| Torsion Angle | ±90°, ±180°, ±360° |
| Max. distance between grips | 2000mm |
| Max. twisting cycles | 1-9999 cycles |
| Frequency range | 5-30 cycles/min |
| Mass of weights for applying tension | Weight structure 27.5kg, 3 pieces of 5kg weight increment, 1 piece of 2.5kg weight increment. |
| Dimensions (L*W*H) | |
| Working frame | 2010*520*1300 mm |
| Control console | 540*410 * 1000mm |
| Power | 3-phase 4-wire, 50Hz, 1 kW |
| Sample | Apparatus |
| The length of the specimen under torsion should be sufficient to permit the appropriate clamping and twisting, and long enough to sustain the applied torsion. A typical value for small cables 1m, whereas larger cable samples are usually defined in terms of the cable diameter. A common length is 125 times the cable diameter. Armored cables may require a longer cable sample or a smaller number of torsion cycles. | The actual sample length is longer than the part under torsion to allow connecting the fibers to be tested. The twisting apparatus consists of two cable gripping devices or clamps, one fixed and one that can rotate. The distance between the clamps is connected to suitable turning equipment. The clamps are designed to prevent crushing force on cable and to allow the cable end to exit from both sides to allow optical measurements. |
Operational Panel of TT-OFT360 Optical Fiber Cable Torsion Testing Machine
Poise equipment
As is shown in the following figure, this equipment is equipped with one poise frame of 5kg used for installing poise and another 4 poises of 5kg and a poise of 2.5kg. The poise can be added to appropriate weight according to the regulations of optical cable test standard.
