Lightning Protecter: Unit, Outdoor, Surge Devices

MELONTEL Passed the TUV certification years ago. After more than 27 years in the field of communication, as manufacturer from China, MELONTEL has the ability to provide high-quality Lightning Protecter to customers around the world.

  • Customized production
  • Professional R&D design team
  • Provide competitive solutions
  • 24/7 online support for customers

MELONTEL: Manufacture Quality Lightning Protecter

By 2022, MELONTEL has been providing quality Lightning Protecter and services to customers around the world for more than 27 years. During this period, the company’s engineering team and R&D team played a vital role.
Only because MELONTEL is convinced that truly good products can be recognized by the market. At present, more than 30 agents all over the world have chosen to cooperate with MELONTEL, and have obtained great rewards from it.


High-quality Lightning Protecters are always welcomed by the market. MELONTEL always believes that creating value for customers will be the foundation of the company.

Lightning Protecter devices can effectively prevent fires or other safety accidents caused by lightning strikes.During thunderstorms, lightning can be seen as an electrical discharge in the atmosphere that results from the thunder. Thunderbolts can travel at the speed of light and reach temperatures of up to 30,000 degrees Celsius, making them extremely dangerous. Every year, thousands of people die as a result of lightning strikes. Every day, an electrical discharge that emits a wide range of electromagnetic radiation occurs.

In addition, building structures, industrial appliances, commercial buildings, HT substations, electrical equipment, and communication transmission lines are protected from lightning strikes by lightning protection systems. This device dramatically enhances safety from lightning storms. Within milliseconds, a lightning strike can deliver thousands of megaamperes of current. Thus, malfunctions in household and industrial equipment, fires in structures, and other fatalities could result in fatalities.

MELOTEL is one of the world’s most well-known communication company suppliers. It exports to more than 90 countries around the world. You don’t have to worry about transportation and other issues. MELOTEL has 30 years of experience in operation, and the customer repurchase rate exceeds 85%. The quality is guaranteed. Meet your various needs. At the same time, MELOTEL is a TUV certified integrity enterprise, which can bring you better service while ensuring product quality.

Lightning Protecter Unit

Lightning Protecter: Unit, Outdoor, Surge Devices1

Lightning protecter strike damage to structures can be prevented or minimized using lightning protection devices. They safeguard the building’s electrical systems, preventing fires and electrocution.

Lightning conductors, such as metal rods, are commonly used to protect buildings against lightning strikes. The lightning rod will be struck first, and the strike will be carried through a wire to the ground, where the system will securely intercept it.

Thus, the lightning rod is the only component in a lightning protection system. The lightning rod must be connected to the ground to safeguard a building. Hollow, solid, pointed, or rounded lightning rods are just a few options available. Copper and aluminum, two common conductors, are used to construct all lightning rods.

Due to lightning’s great intensity and current, no lightning protection technology can provide 100% protection from its impacts. The current in a lightning protection system divides to follow every conductive path to the earth. Yet, even the divided current might harm the lightning protection system itself. Even though these secondary side-flashes may not produce a fire, they can nonetheless blow away bricks, stones, or concrete or damage people within a building.

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Outdoor Lightning Protection Unit

To protect the Infinite Wireless system’s outdoor units or 3rd-party networking equipment put indoors from power surges caused by lightning strikes, the AUX-ODU-LPU-L is an external outdoor Lightning Protection Unit. Every Infinite wireless device features built-in lightning protection, even though

For systems working in hostile conditions or inaccessible areas requiring high protection levels, the AUX-ODU-LPU-L considerably decreases the danger of damage.

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Components of lightning protection devices

Air terminal

Lightning strikes can be intercepted using an air terminal. An earthing electrode is buried in the mud and connected to a low-resistance path in case of a lightning strike. The down conductor is connected to the earthing electrode. Every time lightning strikes and discharges through the air terminal instead of the building structure, the entire current is discharged through this terminal.

Down conductor

Using a low-resistance connection from the air terminal to the ground electrode, a down conductor allows lightning current to flow. To avoid bending the down conductor, it must be positioned upright and straight. The resistance in the discharge current and surges route will ensure the lowest possible inductance.


Discharging lightning current relies heavily on it. The lightning current is absorbed by a large amount of dirt and dissipated. According to the electrical standard, the soil resistivity must be less than 10 ohms for a safe current discharge. A standard copper alloy earth electrode is buried deep vertically in the ground. Because of the soil’s high finite conductivity, currents can flow freely. To reduce soil resistance, a soil pit is filled with charcoal and salt.

Lightning Arrestor

Insulation and switchgear are protected from lightning strikes by these devices. Communication lines are protected by these devices as well. Installations were made directly into the electrical distribution system or a telecommunications network.

On the other hand, whenever lightning travels through the power line to the arrestor, the electricity is redirected by the arrestor to the earth via its ground connection and high voltage terminal. It is used in telegraphy and telecommunication to protect electrical instruments and to ensure the safety of those near them. When lightning strikes a power line, these devices are designed to keep the voltage from rising too quickly.

The surge arrester is a miniature version of the light arrestor. They are often used to defend against transient surges, but they are not used directly to protect from lightning. Nonlinear metal oxide resistors in porcelain or silicon rubber housing are the most popular surge arrestors. They are connected to earth grinding and installed parallel to the circuit.

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Types of Lightning Arrestors

Lightning Arrestor

Primarily utilized at power plants or substations, or other locations with high voltages. Designed to protect equipment weighing more than 20 kilovolts.

Intermediate class

To be utilized in medium voltage equipment regions, electrical substations, transformers, or other substation equipment, it is designed in the range of 1 to 20 kVA.

Distribution class

They are used in equipment with a power rating less than or equal to 1000kva, most typically on transformers.

Secondary class

The least amount of protection for the electrical system can be found in residential and commercial structures.

Surge Protection Device in Panelboard

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Surge suppression components are variants that automatically disconnect when they reach the end of their useful life in this device. However, the load will continue to receive electricity even though it is now unprotected. These steps should be followed if this scenario is undesired for the application. Replacement of the whole module and display assembly is required for this unit’s service. The replacement module contains no pieces that the user can service. To avoid a potentially dangerous situation, do not try to disassemble the module.

Hence, hazardous voltages are present in this apparatus. If safety precautions aren’t followed, it could lead to property damage, significant injury, or death. You should only allow qualified individuals to use or maintain this equipment if they have been adequately trained in the abovementioned instructions. Proper handling, installation, operation, and maintenance are critical to the equipment’s long-term performance and safety.


Systems that are not grounded are prone to instability and can create abnormally high line-to-ground voltages when they encounter faults. When certain fault conditions exist, any electrical equipment, including an SPD, may be subjected to voltages that are higher than their authorized values, which is dangerous.This information has been provided to make an informed decision before putting any electrical equipment on an ungrounded power supply.

Overcurrent Protection

When not experiencing a transient spike, the TPS4 SPD uses extremely little power and only conducts current for a short time. Overcurrent and thermal protection are included in the TPS4 device to prevent anomalous overvoltage scenarios.

System Grounding

An equipment grounding conductor is required on all electrical circuits linked to the SPD. You should employ a single-point grounding electrode system connected and bonded to building steel, metallic pipework, driven rods, or other metals.

Additionally, ground impedance should be as low as possible for sensitive electronic and computer equipment. Grounding conductors that are insulated and appropriately sized should be run within metallic raceways as an additional grounding conductor.

All raceway connections must have enough electrical continuity. Interrupting the flow of a metallic raceway with insulating bushings is never a good idea. It is not suggested to utilize an isolated ground for the SPD, as this could reduce the SPD’s performance in the electrical system as a whole.

Equipment connections to grounding systems and the continuity of the ground grid should be regularly inspected and tested as part of a comprehensive electrical maintenance program.

1. Install, commission, and maintain this product with or under the supervision of a competent electrician who is aware of the applicable Codes of Practice, Building Regulations (BS7671), CDM2007, HSG150 – Health and Safety in Construction, Statutory Requirements, and any Specific Instructions issued by the company.

2. To ensure that this product is properly maintained and operated in the future, this booklet must be given to the person in charge of the product’s future operation and maintenance.


A. Wiring in a Three-Phase Star arrangement and matching the SPD’s voltage rating should be checked to ensure proper operation. The electrical system may have an issue if the voltage from neutral to earth is greater than 5 VAC. It is possible to install the SPD, but it is recommended that you seek the advice of a professional to fix the problem.

B. The provided Triple Pole 63A MCCB must be used to connect the SPD to the Memshield 3 Panelboard. Suppose the SPD is used with equipment other than a Series G Panelboard. In that case, the SPD must be linked via a suitable protective device for the installation location.

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Lightning Surge Protection Device

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Power and signal cables run on trays, inducting, or overhead poles to connect most process control and telemetry systems. Typical sources of transient voltages that can be connected to signal cables and then transferred to electronic equipment include lightning strikes, static discharges, and induction from power cabling.

Moreover, overvoltages of a few tens of volts can destroy low-power semiconductor devices found in field transmitters, computer terminals, and other electronic equipment. High voltage transients caused by ground potential shifts occur more frequently with longer cables. Therefore devices controlling or monitoring events in faraway places are more vulnerable.

If the circuits or components are susceptible, as with computer data connection ports, short cables might cause significant harm. Imagine a building holding control and monitoring equipment protected from direct lightning strikes by lightning conductors and ground rods.

Consequently, into the earth’s termination, the conductor dissipates the enormous charge transfer into the earth’s mass. This current has the effect of raising the building’s reference potential. Using the aforementioned example, a striking current of 100kA in conjunction with a conductor/ground impedance of 10W results in an above potential ground of 1 million volts above ground potential.

Because all of the building’s metalwork is connected to the same reference potential, there are only minimal voltage variances that could be dangerous to occupants.

Protection against high-voltage transients, which may damage electronic equipment, is possible. Several different types of lightning protection devices are available, including lightning barriers, surge arrestors, and lightning protection units.

As such, surge protection devices or SPDs are the correct terms of the variants, and they are used throughout this document. There should be no residual common-mode voltage at the equipment terminals when a surge protection device is activated.

Upon completion of the surge, the SPD should return to regular operation and be ready for the next surge. SPDs are our sole area of expertise, and we’ve been doing it for years. The variety of items on the market covers a wide range of uses. When an overvoltage occurs, the MOVs automatically reset, utilizing gas discharge tubes, voltage-clamping diodes, and metal-oxide varistors (MOVs) for speedy operation, accurate voltage regulation, and automaticity resetting.

How to use lightning surge protectors?

Voltage surges can be prevented by using a surge protector. Excess power is suppressed, carefully diverted to the ground, and kept from doing any harm. These surge arrestors, air terminals, and grounding rods provide the industry with a complete lightning protection system.
Lightning surge protection devices are needed for several reasons. It is possible to arrive at this conclusion by responding to straightforward questions like:

  • Does it matter if your facility is close to a high building, hilltop, or otherwise in a lightning-prone area
  • Are our surge arrestors part of your current lightning protection system?
  • If so, what kind of overvoltage protection is needed?
  • Do the facility’s actions, such as starting a big engine or performing welding, cause surges?
  • Several factors influence whether or not lightning surge protection devices are necessary. It’s not an option to use our lightning-protected surge protectors. To meet the needs of specific sectors, each product is developed by an experienced team of engineers.

Lightning Surge Protection Devices

To maintain systems working well, each organization has a unique set of requirements that must be met. Surge protection may be required for fire alarms in one business. At the same time, it may be considered for security systems and data centers in another.

To suit various requirements, several configurations of lightning surge protection devices are deployed in various protected zones. Low voltage equipment, such as facility guards and data line protectors, is typically protected by arrestors mounted in the service entry switchboards.

Installing lightning surge protection devices guarantees the safety of your company’s data and staff and the continuing operation of essential equipment in the event of an electrical surge.

What are the types of Fiber Optic Quick Connectors?

Fiber Optic Quick Connectors come in a variety of shapes and sizes.

In the United States, the three most prevalent networking and audio/video styles are LC, SC, and ST. LC and SC are the most often utilized styles.

ST connections are being used in a more restricted capacity.