Created by: Glen Zhu | Updated Date: Nov 2, 2022
To begin with, we must understand the surge protector’s regulations.
Protection against transient overvoltages shall be provided where the consequence caused by overvoltage could:
For all other cases, SPDs shall be fitted to protect against transient overvoltages, unless the owner of the installation declines such protection and wishes to accept the risk of damage to both wiring and equipment as tolerable.
Note: Always refer to the latest updated Standards.
Equipment connected to Alternating Current (AC) networks can be easily subjected to a multitude of undesirable electrical phenomena. AC surge protection device is designed to protect electrical systems and equipment from surge events by limiting transient voltages and diverting surge currents.
Transient voltage and power surges can present a great risk to both individuals and equipment, which is why the role surge protection plays should not be overlooked when it comes to safety.
According to the IEC’s various protection methods and terms, low-voltage power supply systems are classified into three types: TT, TN, and IT systems, with TN systems further classified into TN-C, TN-S, and TN-CS systems.
As a result, the SPD should be chosen in accordance with the various grounding methods of the low-voltage power supply system.
TN-C System
TN-S System
TN-C-S System
TT System
IT System
For instance, when the TN AC power supply system is used for power supply, the power distribution line drawn from the building’s main distribution box must use the TN-S grounding method.
There are three different types of surge protection devices (SPDs) according to IEC 61643-11:2011 and EN 61643-11:2012+A11:2018.
For the AC power supply system, choosing the right SPD ensures that the equipment has the longest possible lifespan. Keep these essential considerations in mind when choosing SPDs for your AC power supply system:
As electric vehicles (EVs) become more widely available in many countries, the availability and safety of electric vehicles and charging stations has been identified as a critical factor.
Considering that the vast majority of vehicle electronics at charging stations are now wired into the grid, Once transient voltages are coupled into the vehicle through this galvanic connection, they become a serious threat.
LSP ranges of AC surge protectors for E-Mobility in the power supply and inspection circuit could be used to safeguard the charging station’s electronic components.
This type of surge protection device SPD can protect all electrical installations against lightning strikes by discharging the current created from a lightning surge and keeping it from spreading to the equipment, which characterized by a 10/350 µs and 8/20 µs lightning current waveform.
Type 1+2 AC SPD FLP12,5-275/4+0
for 3 phase TN-S networks
Type 1+2 AC SPD FLP12,5-275/3+1
for 3 phase TT and TN-S
Type 1+2 AC SPD FLP12,5-275/3+0
for 3 phase TN-C networks
For installation, it should be installed at the origin of the AC installation equipped with LPS.
LSP SPD FLP7 series use Metal Oxide Varistor (MOV) and/or Gas Discharge Tube (GDT) circuits to protect electrical devices from spikes in alternating current power.
Type 1+2 AC SPD FLP7-275/4+0
for 3 phase TN-S networks
Type 1+2 AC SPD FLP7-275/3+1
for 3 phase TT and TN-S
Type 1+2 AC SPD FLP7-275/3+0
for 3 phase TN-C networks
These series are designed to be connected in multi-pole configurations to protect single-phase, 3-phase, and 3-phase+Neutral AC networks, and for TN-C, TN-S, TN-C-S TT, and IT power supply systems.
LSP SPD SLP40 series are intended as a protection against transient overvoltage caused by fast switching operations or indirect hits of lightning strokes (residuum effects), Which characterized by an 8/20 µs lightning current waveform.
AC Type 2 surge protection device SPD
SLP40-275/4+0 for 3 phase TN-S networks
AC Type 2 surge protective device SPD
SLP40-275/3+1 for 3 phase TT and TN-S
AC Type 2 surge protector device SPD
SLP40-275/3+0 for 3 phase TN-C networks
AC Type 2 surge protection device SPD
SLP40-275/2+0 for single phase TN-S
AC Type 2 surge protective device SPD
SLP40-275/1+1 for single phase TT and TN-S
AC Type 2 surge protector device SPD
SLP40-275/1+0 for single phase TN-S, TN-C, TT (only L-N)
These series are rated for indoor use(sub-distribution or machine control cabinets) or fixed into a waterproof box for outdoor use.
The equipment used in your manufacturing facilities is very sensitive and vulnerable to lightning and switching surges. A professional approach to lightning and surge protection will guarantee your industrial sites a long life.
LSP FLP25 series is designed to protect industrial service entrances at an industrial site.
Type 1 AC SPD FLP25-275/4+0
for 3 phase TN-S networks
Type 1 AC SPD FLP25-275/3+1
for 3 phase TT and TN-S
Type 1 AC SPD FLP25-275/3+0
for 3 phase TN-C networks
LSP components greatly increase the service life and trouble-free operation of the related equipment by shielding the technology in the power supply network from lightning currents and overvoltages. Pick from a wide range of surge protection products made by us.
We know you have a lot of options. On the surface, they may all appear the same. What you can’t see is what makes the difference.
LSP provides solid engineering, proven reliability, and exceptional customer service. Before they are sold, all of our products are subjected to stringent quality control, with independent testing agencies confirming that they meet or exceed the most recent safety and performance standards. We can back our products with industry-leading warranties and responsive customer service. Here’s what makes LSP unique.
Contact us freely to get more AC SPD informations.
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