One of the primary products offered by Shenzhen Noyafa Technology Co., Ltd. is Underground Cable Locator. These locators are essential for anyone who works with network cables or is responsible for maintaining network infrastructure. Cable locators allow you to quickly identify and diagnose problems with cables, saving time and money in the long run. When working underground, it’s knowing how your cable locator works is essential. This way, you can get the most accurate results for locating work.
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Passive Method
When excavation work is underway, it’s imperative to know the location of underground utilities (electricity, gas, water) before digging. Damaging them can cause costly damage to the project and pose safety risks.
A cable locator enables you to identify buried cables and pipes before any excavation work starts. This helps prevent fatalities in construction sites and improves overall safety for the on-site workers.
The Underground Cable Locator works by applying a signal to the buried utility to detect and trace it. A cable locator generally consists of two parts- the transmitter and the receiver.
The devices internal aerial induces a signal directly onto a buried metallic utility. This device’s to be identified and tracked by the locator operator.
Active Method
Undertaking any excavation brings site workers close to buried utility services (electricity, gas, water or telecommunications). Consideration should be given to knowing the exact location of these utilities before and during the excavation process.
This can be achieved by using a cable locator. The best cable locator can accurately trace the location of a buried utility and any faults or issues that may affect its performance.
A cable locator passes an alternating current along a wire or pipe, naturally producing an electromagnetic field. The cable locator can detect this field as it oscillates between positive and negative frequencies, forming a frequency known as Hertz (Hz).
Many buried utilities cannot be located through passive detection because they do not carry live current or radiate radio signals. Active detection involves inducing a signal onto the buried metallic utility using a signal transmitter. This makes it possible for an underground cable locator to trace and identify the buried utility.
Radio Mode
When an alternating current (AC) travels along an electrical cable, it creates an electromagnetic signal. A cable locator can detect this signal, which uses aerials built up of wire wrapped around ferrite rods to detect and amplify the tiny signals emitted by buried utilities.
Locating a buried utility with a cable locator is impossible unless AC is currently flowing. This could be current flow in a live electrical cable or stray currents generated by power transmission systems using any conductive pipe as a return path.
The radio mode of the Underground Cable Locator works by detecting the VLF signals radiated from live cables or induced onto buried utility conductors by a radio transmitter. These signals can be easily distinguished from background noise and help to differentiate between co-located utilities.
The SuperCAT4+CPS model combines the features of both Power and Radio modes to locate energized cables and dead services (including metal pipes) with rectified cathodic protection systems (CPS). It also includes Dynamic Overload Protection filters for filtering interference.
Auto Mode
Auto mode combines the benefits of simultaneous detection in Power and Radio modes to confirm the presence of buried utilities. This helps ensure the safety of site workers and improves the accuracy of your locating jobs.
Auto mode reduces the risk of utility strikes and helps confirm the presence of buried utilities on your first site visits. It also allows you to quickly identify external services, allowing you to change your digging method and avoid cable strikes.
In this mode, the signal clamp goes around a de-energized conductor or conduit and induces either an 8 or 33 kHz signal into them. The crew member then locates the buried utilities using the receiver.
This method is used when there is no access to exposed bare wires, or you don’t want to cut the cable-insudon’tg sheath to connect directly with the bare wire. It also works when you should not make electrical contact with the energized cable.
Conclusion
With a focus on innovation and quality, Shenzhen Noyafa Technology Co., Ltd. has established itself as a reliable and trusted brand in the cable testing and network tools market. The company offers a wide range of products that are designed to cater to the needs of various industries.
