
FB11 Cable Fault Tester
It integrates fault location, path detection, high-voltage signal generation, and precise location for resolving various faults on power cables 35kV and below.
Highlights


FB11 consists of four parts.
Cable Fault Location Host -Quickly locate the fault area
- No test blind area: Combining low-voltage pulse method and high-voltage flashover method to deal with all types of cable faults
- System accuracy is less than 50 cm, reading resolution is less than 1 meter , and the test distance exceeds 64 kilometers .
- The fault waveform can be compared with the intact waveform on the same screen, and the fault distance can be automatically determined, which is intuitive and easy to understand.
- With high-voltage protection measures, it will not freeze or be damaged in high-voltage shock environments
Cable Path Finder – Identify the path of underground cables
- Supports low-frequency and high-frequency AC signal output to adapt to different site conditions.
- Signal strength is indicated by digital size, grating lifting and lowering, sound and other methods, making positioning more intuitive.
- The maximum measurable depth is 2.5 meters , meeting most burial scenarios.
- Constant power output: Automatically matches the load to ensure the equipment always works in the best condition.
High voltage signal generator – stimulates high resistance fault signal
- It adopts switching power supply electronic boost, has open circuit and short circuit automatic protection functions, and the box is made of engineering plastic insulation material, which is safe to operate
- Maximum output voltage <36kV , which can effectively break down high resistance fault points
- The color LCD screen displays the output voltage in a compass-style dynamic display, which is clear and intuitive.
Acoustic and magnetic synchronous positioning instrument – accurately locate the fault point
- Acoustic and magnetic synchronization: Synchronously receives the acoustic and electromagnetic waves generated by the fault point discharge, and processes them through the CPU to effectively eliminate interference from environmental noise
- The LCD screen directly displays the real-time distance between the probe and the fault point , guiding the operator to reach the target directly
- Ultra-high precision: The positioning error is less than 0.2 meters , which greatly reduces the excavation range and saves manpower and time costs.



Specifications
| Units | Key parameters |
| Distance measuring host | Test method: low voltage pulse method, high voltage flashover method Test distance: >64km System accuracy: <50cm Data sampling: 100MHz Display: 8-inch color LCD touch screen |
| Path Finder | Detection depth: Maximum 2.5 meters Transmitter power: Constant power, maximum 1A Receiver gain: 0-99dB adjustable Working time: >6 hours |
| High voltage generator | Output voltage: < 36kV Discharge energy: < 1200J/5S Minimum discharge cycle: 3 seconds |
| Acoustic magnetic pointing instrument | Positioning error: < 0.2 meters Display distance: 0.1 – 22.6 meters Sound wave amplification: 120dB |

Application Scenarios
- Power system: Troubleshooting and preventive testing of 35kV and below transmission and distribution cables.
- Municipal engineering: street light cables, traffic signal cables, and underground pipeline maintenance.
- Communications industry: Fault location of power cables in tower communication base stations.
- Landscaping: Path finding and fault repair of underground cables in parks, green belts, etc.
Product Demo
Real Experiences with TFN Testers
Robert K.
“This device is extremely versatile — it can measure cable length, locate breaks or short circuits, trace cable routes, and even detect leakage. The precision is excellent, and it makes fault finding so much easier.”
Sarah L.
“I really like how easy it is to use. The results are accurate and consistent, and it helped us locate faults much faster than before. A great tool for everyday maintenance work.”
FAQs
What logistics options do you offer?
We provide optimized logistics solutions based on the urgency of your order, size, weight, and your location:
International Express: Suitable for samples, urgent orders, and small shipments under 22 lb. We partner with top logistics providers such as DHL, FedEx, and UPS, offering door-to-door tracking.
Air Freight: Suitable for medium to large orders or time-sensitive complete equipment, offering an effective balance between cost and speed.
Ocean Freight: Suitable for large-volume orders and the most economical shipping method. We offer a variety of trade terms, including FOB, C&F, and CIF.
What’s the lead time?
For our standard products, if there are in stock and ready for shipment, the lead time is about 7-10 days. For our optional products, the lead time is about 25-30 days.
What is the product warranty period?
We are confident in the quality and reliability of our products.
We offer a standard 12-month warranty on all instruments, starting from the date of arrival at the port of destination.
Extended warranties are also available; please contact our sales team for details.