The cable fault pinpointer XHDD503C uses the acoustic and magnetic
synchronization method to determine the power cable fault point.
The electronic flashover is generated by the impact discharge
generator, picked up and amplified by the corresponding probe, and
the precise location of the fault point is determined by auditory
and visual judgment.
It is a device that completes the precise positioning of the cable
fault point within the rough measurement range and collects the
acoustic and magnetic time difference. It integrates positioning
technology, path-assisted testing and other technologies, providing
multiple test modes and rich and diverse prompt information to
efficiently and accurately complete cable fault location.
This cable fault locator is suitable for low-resistance,
short-circuit, open-circuit and disconnection faults of power
cables, high-frequency coaxial cables, street light cables, and
buried wires made of various materials with different
cross-sections and media, as well as high-resistance leakage and
high-resistance flashover fault.
Features
1. 5-inch touch-high brightness LCD ensures visibility under
sunlight.
2. Adopt acoustic and magnetic synchronous positioning technology
to automatically calculate the acoustic and magnetic time
difference.
3. The gain value and trigger value of the acoustic signal and
magnetic signal can be manually adjusted to adapt to various
environments.
4. It has background noise reduction technology and can choose from
a variety of filtering methods.
5. It has BNR background noise reduction and mute noise reduction
functions.
6. It has path deviation indication.
7. Equipped with multi-layer physical isolation signal sensors,
waterproof grade IP65.
8. Built-in large-capacity lithium battery, long standby time,
equipped with fast charger.
9. Small and lightweight, easy to operate, and simple human-machine
interface.
Technical indicators
| 1 | Filter parameters | All-pass: 100Hz~1600Hz. Low pass: 100Hz~300Hz. Qualcomm: 160Hz~1600Hz. Bandpass: 200Hz~600Hz. |
| 2 | Channel gain | 8 levels adjustable. |
| 3 | Magnetic channel gain | 8 levels adjustable. |
| 4 | Output gain | 16 levels (0~112db) |
| 5 | Output impedance | 350Ω |
| 6 | Acoustomagnetic positioning accuracy | less than 0.2m. |
| 7 | Path identification accuracy | less than 0.5m. |
| 8 | Power supply | 4*18650 standard lithium batteries. |
| 9 | Standby time | more than 8 hours. |
| 10 | Volume | 428L×350W×230H |
| 11 | Weight | 6.5kg. |
| 12 | Ambient temperature | -25~65℃; Relative humidity: ≤90%. |
Working principle
This device uses the acoustic and magnetic synchronization method
to accurately locate faults. It is a very accurate and unique
positioning method. Its principle is based on the traditional
acoustic point determination method and adds the detection and
application of electromagnetic signals.
When the high-voltage generator performs impact discharge on the
faulty cable, the sound generated by the discharge at the fault
point is transmitted to the ground. The sound signal is picked up
by a high-sensitivity probe. After amplification, a "pop" sound can
be heard by listening with headphones.
The built-in probe of the probe receives the magnetic field signal
in real time, and uses the principle that the propagation speed of
the magnetic field is much higher than the propagation speed of
sound to determine the distance of the fault point by detecting the
time difference between the electromagnetic signal and the sound
signal. Keep moving the sensor position to find the point with the
smallest acoustic-magnetic time difference, then the exact location
of the fault point will be below it.
Traditional acoustic measurement legal point instruments generally
only use earphones to monitor, or are supplemented by the swing of
the meter pointer to identify the discharge sound at the fault
point. Since the discharge sound disappears in an instant and is
not much different from the ambient noise, it often brings great
difficulties to operators who are not very experienced. The
acoustic-magnetic synchronization method effectively avoids the
above problems of the traditional acoustic measurement method.
1 Adjustment: Press the adjustment button to enter the adjustment
interface, and rotate the adjustment button to set the adjustment
parameters;
2 Power supply: Turn on and off the power supply of the system.
When turning on the system, you need to press and hold the power
button for 3 to 4 seconds until you hear a long "beep" sound, then
you can lift the button; when turning off, you need to press and
hold the power button for 3 to 4 seconds;
3 Display: 5-inch touch display.
1 Sensor: Probe sensor connection port;
2 Charging: charger connection port;
3 Dedicated headphone jack.
Interface and function introduction
The operation interface includes a waveform display area and a
parameter adjustment area. The functions of each part are
introduced one by one according to the logo in the above figure.
1/2: Sound gain setting/sound trigger setting: Click the icon or to
enter the sound gain setting and sound trigger setting interface. 1
is the sound gain setting and 2 is the sound trigger setting.
1) The sound gain has a total of 1 to 8 adjustable gears. Click the
up and down arrows to adjust the amplification factor of the sound
to the signal, or rotate the adjustment button, select the icon ,
press the adjustment button to enter the sound gain setting
interface, and adjust the sound to the signal. The amplification
factor of the signal, the default sound gain is 8 levels when
turned on.
2) The sound trigger has a total of 0 to 99 adjustable levels.
Click the up and down arrows to adjust the sound trigger threshold,
or turn the adjustment button, select the icon , press the
adjustment button to enter the sound trigger setting interface and
adjust the sound trigger threshold. Limit value. The larger the
value, the lower the trigger sensitivity and the higher the
filtered signal. The default trigger threshold value at startup is
30 levels.
3/4: Magnetic field gain setting/magnetic field trigger setting:
Click the icon to enter the magnetic field gain setting and
magnetic field trigger setting interface. The left side is the
magnetic field gain setting and the right side is the magnetic
field trigger setting.
1) The magnetic field gain has a total of 1 to 8 adjustable gears.
Click the up and down arrows to adjust the amplification factor of
the magnetic field to the signal, or turn the adjustment button,
select the icon, press the adjustment button to enter the magnetic
field gain setting interface and adjust the magnetic field pair.
The amplification factor of the signal. The default magnetic field
gain at startup is 8 levels.
2) The magnetic field trigger has a total of 0 to 99 adjustable
gears. Click the up and down arrows to adjust the magnetic field
trigger threshold. The larger the value, the lower the sensitivity
of the trigger and the higher the filtered signal. Or turn the
adjustment button and select the icon, press the adjustment button
to enter the magnetic field trigger setting interface and adjust
the magnetic field trigger threshold. The default magnetic field
gain at startup is 30 levels.
5: Probe indication: When the probe is not connected, the icon with
cross is displayed. When the probe is connected, the icon without
cross is displayed.
6: All-pass filtering: All-pass filtering mode.
Low-pass filtering: low-pass filtering mode.
High-pass filtering: high-pass filtering mode.
Band-pass filtering: band-pass filtering method.
7.Mute setting: Click the icon to turn on and off the mute mode.
After the mute is turned on, when the operator holds the handle,
the host immediately activates the mute to avoid noise damage to
the ears.
8.BNR settings: Click the icon to turn on and off digital noise
reduction. Turn on/turn off (icon with cross) the background
digital noise reduction function (BNR). The background digital
noise reduction BNR technology is used to deal with a lot of noise
in the surrounding environment, making it easier to accurately
determine the point.
9.Volume setting: Click the icon, or turn the adjustment button to
set the volume, and click the "+" or "-" button on the screen.
Adjust the headphone volume. There are 0 to 16 adjustable levels in
total. It is recommended to set it to 8 levels.
10.Power display: Indicates the battery power status of the device.
11.Sound intensity: sound intensity indication and corresponding
numerical display.
12.Electromagnetic signal: Initialization completed, you can sample
the logo (lightning is yellow); mute or touch sensor logo
(lightning is white).
13.Magnetic field strength: magnetic field strength indication and
corresponding numerical display.
14.Four sets of acoustic and magnetic time difference data display,
showing the acoustic and magnetic time difference for user
reference to improve the accuracy of fixed point.
Packing list
Onsite testing
Company profile
XZH TEST is a professional cable fault detection equipment
manufacturer. We are a young team. Our development philosophy is
humanized management, intelligent cloud-based products, and
internationalized operations. Our development mission is to make
electrical equipment free from undetectable failures.
Since its inception in 2013, our company has grown to become one of
the largest manufacturer of underground cable fault detection
equipment in China. An ISO 9001 and CE certified company, we
produces a broad range of testing equipment.
What we can do
We have the ability to innovate new products and technologies.
We can provide complete system solutions for your project.
We provide online and offline practical and theoretical training.
We provide instrument repair and calibration.
FAQ
1. Are you a trading company or a manufacturer?
We are a professional manufacturer with more than 10 years of
experience. We can strictly control the quality of parts and
finished products.
2. What is the delivery time and inventory?
If our best-selling products are in stock, it will be 5-8 working
days for shipment. But for mass production and customized
production, the time will take 2-4 weeks.
3. What are your payment terms?
Payment ≤ USD 2000, 100% T/T prepayment. Orders over USD 2000 can
be negotiated.
4. How long is your product warranty?
We provide 1 year warranty for the equipment.
5. How do you ensure quality?
The product links include R&D, manufacturing, commissioning and
technical support, following strict and scientific management
principles. Therefore, we can support strong production and R&D
capabilities, and can produce high-quality products at competitive
prices to meet customers' high requirements.
6. What support can I get?
We will provide training support, marketing support, technical
support and supply chain support. You can contact us for more
information.
7. Where is your factory? Can I visit your factory?
We are located in Xi'an, Shaanxi, China. We are close to Xi'an
Xianyang International Airport, which is about 2 and half hours by
plane from Shanghai and Guangzhou. All customers from all over the
world are welcome to visit us.
8. How to become your dealer?
Every company interested in power system instruments can contact us
without hesitation, including website letters, emails, telephones,
etc. We will contact you quickly according to your company
information and cooperation intentions.
