Type 2 Surge Protector (SPD)Manufacturer

Type 2 spd AC Surge Protective Device

Leikexing Electric is a professional manufacturer of surge protectors, specializing in the production of high-quality surge protectors (SPD).
Leikexing Electric has 8 years of experience in the production of surge protectors, with an annual output of nearly 1 million surge protectors (SPD).
Leikexing Electric always puts customers at the center and takes product quality as the core concept, providing the highest quality products (SPD) and the most satisfactory services.

Type 2 AC Surge Protector (SPD)

Leikexing series single-phase/three-phase type 2 spd AC power surge protector

Type 2 surge protectors are usually installed at the lightning protection boundary between LPZ1 and LPZ2 zones or beyond, such as floor distribution boxes, meter boxes, or terminal boxes. Its main purpose is to further protect critical or sensitive electrical equipment by limiting voltage to prevent transient overvoltage from causing damage to the equipment. The Type 2 surge protector should be a voltage limiting type, with a lightning current capacity of not less than 20KA. It should be installed at critical or sensitive electrical equipment to absorb more of the remaining surge and have good suppression effect on transient overvoltage.

LKX-C40/2+0-For single phase TN-S systems
LKX-C40/1+1-For single phase TT, TN-S
LKX-C40/3+0-For three-phase TN-C systems
LKX-C40/4+0-For three-phase TN-S systems
LKX-C40/3+1-For three phase TT, TN-S
LKX-B100/4+0-For three-phase TN-S systems

Type 2 AC Surge Protector (SPD)

Leikexing series single-phase/three-phase type 2 spd AC power surge protector

The key parameters of Type 1 surge protector include: surge current Iimp, maximum continuous operating voltage Uc, voltage protection level Up, and response time tA. These parameters are crucial for evaluating and selecting the performance of surge protectors.

Specification parameters:

◆ Type 2/T2/Class C

◆ Nominal voltage Un:  230V 400V

◆ Max. continuous operating voltage Uc: 275V/320V/385V/440V

◆ Nominal discharge current (8/20 μs) In = 10kA 20KA 30KA 40KA 60KA 80KA   Type 2 

◆ Impulse discharge current (8/20 μs) Imax = 20kA 40KA 60KA 80KA 100KA 120KA   Type 2

◆ Protective elements: Metal Oxide Varistor (MOV), Gas Discharge Tube (GDT)

High quality surge protector

The main accessories of the product are made of high-quality copper, plated with 4 μ nickel to prevent salt spray, with good conductivity and excellent product performance.
Module insertion and extraction type, displaying red failure and green normal, optional remote alarm.
With isolation function, it prevents solder wire drawing from causing incomplete detachment during hot tripping. This product can quickly and effectively cut off the arc.
The product shell is made of PA66 insulation and flame retardant material, effectively preventing fires from occurring.
DIN rail installation.

AC surge protector dimensions

Leikexing series single-phase/three-phase type 2 ac power surge protector

Quick response: The Type 2 surge protector can detect and respond to overvoltage in a very short period of time, ensuring timely protection of electronic devices in the event of overvoltage impact.
◆ High voltage resistance: Type 2 surge protector can withstand large transient currents and voltage surges, protecting electronic devices from damage caused by overvoltage.
◆ Low residual voltage: After the surge protector is activated, the residual voltage of Type 2 surge protector is lowered to ensure the safe operation of the protected equipment.
Reusable: It usually has the characteristic of being reusable, as long as the protector itself is not damaged, it can continue to play a protective role.
Rated discharge current: 10KA 20KA 30KA 40KA Type 2 Surge Protector Dimensions
Rated discharge current: 60KA 80KA Type 2 Surge Protector Dimensions

The function of Type 2 surge protector

Type 2 surge protector is to prevent two levels of voltage from acting on the equipment simultaneously, protecting low-voltage equipment from damage caused by surge voltage. It is usually installed on the low-voltage side of the power system and is mainly used to protect low-voltage equipment.

Type 2 surge protector detects whether there is overvoltage or overcurrent in the circuit. When overvoltage is detected, the power supply circuit will be automatically cut off. If overcurrent is detected, the current increase will be limited by the current limiting circuit to protect the equipment from damage.
Type 2 surge protectors are usually installed at the power inlet and outlet of low-voltage distribution systems, as well as at the input/output terminals of electrical equipment. They can effectively protect low-voltage equipment from damage caused by surge voltage and ensure the normal operation of the equipment.

Installation and maintenance of type 2 surge protector

Clearly define the installation location

Type 2 surge protectors should be installed at the entrance of electrical equipment or circuits to maximize the protection of the equipment from the impact of surge voltage. When choosing the installation location, consideration should be given to the equipment’s usage environment, wiring layout, and areas that are susceptible to lightning strikes.

Preliminary preparation work

Before installation, it is necessary to ensure that the power is disconnected to avoid the risk of electric shock. At the same time, prepare the necessary tools and materials, such as screwdrivers, soldering irons, insulating tape, etc.

Specific installation steps

1.After disconnecting the power supply, connect the surge protector to the power line in front of the protected device.
2. Ensure that the wiring of the surge protector is correct, generally consisting of live, neutral, and ground wires. The ground wire is connected to the lightning protection grounding system to improve the lightning protection effect.
3.The connection between type 2 surge protectors and the protected equipment should use short and straight lines to reduce inductance and resistance and improve protection effectiveness.
4.After the connection is completed, perform a tightening check to ensure that all connections are firm and reliable.
5. Restore the power supply and test whether the surge protector is working properly.

After installation, the working status of the surge protector should be regularly checked to ensure that it is in good condition. Once abnormalities are detected, they should be promptly addressed or replaced. In addition, it is necessary to regularly maintain the surge protector, including cleaning, fastening wiring, etc., to ensure its normal operation and extend its service life.

★ Regular inspection: including checking the appearance of the surge protector for cracks, deformation, or other physical damage, checking the integrity of the wiring parts, confirming that there is no oxidation phenomenon in the cable joints and wiring terminals, checking whether the grounding wire is firm, and confirming that the installation surface is clean and free of dust, oil stains, and other dirt.

★ Cleaning: Regularly clean the casing and wiring parts of the surge protector, wipe them with a clean, dry cloth, and gently wipe the installation surface with an eraser to remove dust, oil stains, and other dirt.

★ Replacement: When serious damage is found on the appearance of the surge protector, it needs to be replaced. Meanwhile, if the surge protector’s effectiveness in protecting the equipment deteriorates or fails, it also needs to be replaced. Generally, it is recommended to replace it after three years of use.

★ Repair: If the surge protector malfunctions, it should be immediately stopped and the cause of the malfunction should be investigated. If the cause of the malfunction is obvious, such as damage to the components, they can be replaced directly. If the cause of the malfunction is not obvious, it is necessary to contact the manufacturer for repair or replacement.