A surge arrester designed for low-voltage overhead power lines with insulated or covered conductors. Low voltage surge arresters (LVSAs) are essential devices designed to protect electrical and electronic equipment from transient overvoltages and current surge (e.g., lightning strikes, operation surges) by limiting voltage spikes and diverting surge currents to the ground.
(1) Protection of Sensitive Equipment
Prolonging the lifespan of equipment and machinery by reducing stress on components.
Targeted for overhead power lines: Specifically designed to address surge risks in overhead lines (e.g., lightning strikes, switching transients), which are more exposed to environmental hazards than underground cables.
It is far cheaper than repairing/replacing damaged equipment (e.g., appliances, motors, switches) or addressing system problems. Meanwhile, it will reduce maintenance costs and insurance claims by preventing surge-related failures.
Meets electrical codes and standards (e.g., IEEE, NEC) that ensures surge protection for low-voltage systems, ensuring safety and legal compliance.
Jera Line produces high-performance low-voltage surge arresters to meet the needs of market, below are the main models:
• SA-0.5/10
• SA-0.66/5
|
Item No. |
Max allowable voltage, V |
Voltage protection level, V |
Nominal discharge current, kA |
Maximum discharge current, kA |
Short-circuit withstand capability, kA |
|
SA-0.28/10 |
280 |
1100 |
10 |
40 |
4.5 |
|
SA-0.5/10 |
500 |
1680 |
10 |
40 |
4.5 |
|
SA-0.66/5 |
660 |
2465 |
5 |
35 |
4.5 |
(1) Easy installation
Can be installed at strategic points (e.g., transformer low-voltage terminals) with minimal disruption to existing systems.
Recommended for use with Jera Line's Insulation piercing connector (IPC) for enhanced system protection and quick installation.
(2) Improved System Reliability and Stability
① Reduced Outages
Mitigates surge-induced faults (e.g., insulation breakdown, arcing), minimizing downtime and maintaining continuous power supply.
② Stable Voltage Supply
Ensures consistent voltage levels for sensitive devices, improving operational efficiency in power systems.
(3) Compliance with Safety Standards
The production process complies with safety regulations, and product’s quality according to IEC 61643.
(4) Protecting from both overvoltages and under-voltages.
Protect equipment damage from transient overvoltage and other events such as lightning strike, current surge etc.
(5) Cost saving
It eliminates the need for frequent inspection and maintenance, reducing both equipment replacement and labor costs.
(6) Environmental and Mechanical Resilience
① Weather and Hazard Resistance: Built to withstand outdoor conditions (e.g., moisture, temperature fluctuations) and mechanical stresses, ensuring long-term durability on overhead lines.
② Insulated Conductors Compatibility: Works seamlessly with overhead covered lines (insulated conductors), enhancing safety against physical contact while addressing surge risks.
① Installed on the low - voltage side of distribution transformers that are connected to overhead power lines.
② At the connection points of overhead lines to residential, commercial, or industrial buildings, typically at the service entrance.
③ Along the low - voltage overhead feeder lines, especially in areas prone to lightning strikes or where there are frequent switching operations.
④ In regions where overhead power lines are in close proximity to other conductors (such as communication lines or adjacent power lines).
The insulation piercing connector (IPC) that Jera Line produced, they can help to install the LV metal oxide surge arrester.
• ZOP-23
• ZOP-30
|
Item No. |
Cable size, mm²（Main） |
Cable size, mm²（Tap） |
Torque, N*m |
|
16-120 |
16-95 |
20 |
|
|
10-95 |
1.5-70 |
20 |
|
|
16-185 |
/ |
16 |
① Easy Installation
Insulation piercing connectors allow for quick and convenient connection to overhead or underground low - voltage power lines without the need to strip the insulation of the main conductor.
② Continuous Conductivity
IPCs ensure a reliable electrical connection. They pierce through the insulation of the power cable and make contact with the conductor, enabling the proper flow of electrical current.
③ Compatibility in Overhead Line Applications
IPCs are designed to be weather - resistant and can withstand the rigors of outdoor installations.
④ Space - Saving
Overhead line installations often have limited space for adding new components. IPCs are relatively compact, and when used to connect low - voltage surge arresters, they do not require a large amount of additional space.
Jera Line is a leading manufacturer from China, specializing in low-voltage and medium-voltage overhead/underground cable connectors and accessories, with below superiority:
1. As a direct factory from China, we eliminate the need for middlemen, thus saving costs and enabling more direct communication.
2. Over 5000㎡ facility with a professional work team.
3. Competitive price and reliable quality.
4. Has the third-party test reports complied with EN-50483-4, NFC 33-020, NFC 33-041, IEC 61238, etc.
Low voltage surge arresters are a necessity for overhead covered lines, and Jera Line can be your best supplier. Please don’t hesitate to contact us!
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