T-900 Hand-held TDR
The T-900 is an easy to use, compact hand-held instrument for accurately locating open-circuit and low-impedance faults on metallic cables, using time-domain reflectometry (TDR). Comparison of TDR traces from the three phases of a faulty cable, can be used to identify differences between them, providing another useful aid to fault location.
The unit can also calculate the velocity of propagation (VOP) of a known length of cable or measure the length of cable on a drum, where the VOP is known.
Features
- Available in three versions with 8, 16 or 32km range
- Digital gain control
- Data transfer via USB flash memory for analysis on PC
- Automatic waveform identification eliminates dead zone
- Automatic impedance matching
- Large colour display with simple user interface
- 10 hours operation on one battery charge
- Resolution to 1m
Specification
| Technical Parameters | Parameter Value |
| Range | 8km (16 and 32km are also available as options) |
| Accuracy | ±0.5% of range |
| Resolution | Minimum resolution 1m |
| Pulse | ±30v, 40ns-10us with automatic adjustment |
| Sampling rate | 100MHz |
| Balance | 25 – 300Ω automatically adjusted |
| Velocity of propagation | 40-300m/µs |
| Dead zone | There is no dead zone |
| Power consumption | 1W |
| Batteries | Lithium, 2 pcs of 18650 batteries in series |
| Charger | Input: AC110-240V, output: 8.4V |
| Battery life | 10 hours |
| Dimensions | 204 x 100 x 36 mm |
| Weight | 0.38kg |
| Operating temperature | -15oC to +50oC |
| Ingress Protection | IP53 |
Delivery includes:
- TDR Cable Fault Locator
- Test Leads
- Battery charger
- Carry bag
- User manual
- CD with management software
- USB flash memory
