YJ1-C40 DC Surge Protector

Scope application

The YJ1 series DC surge protector is suitable for preventing damage to DC power systems and electrical equipment caused by lightning overvoltage and transient overvoltage, and protecting the safety of equipment and users. Widely used for DC power protection in photovoltaic power generation systems, mobile communication base stations, microwave communication bureaus (stations), telecommunications rooms, factories, civil aviation, finance, securities and other systems.

The DC surge protector adopts temperature controlled circuit breaker technology and is equipped with an overcurrent protection circuit, completely avoiding fire hazards caused by the surge protector’s own heating; And using well-known components and advanced production processes, it is only used for various DC power systems, such as DC distribution panels, DC power supply equipment, DC distribution boxes, electronic information system cabinets, and output terminals of secondary power equipment.

Model Meaning

Normal working conditions

1. Surrounding air temperature

a. The upper limit value shall not exceed+40 ℃.

b. The lower limit value shall not be lower than -4 ℃.

c. The average value within 24 hours shall not exceed+30 ℃.  

d. The maximum operating temperature is -40 ℃~+75 ℃.

2. Altitude

The altitude of the installation site shall not exceed 2000 meters.

3. Atmospheric conditions

a. When the ambient air temperature is+35 ℃ and the relative humidity of the air does not exceed 50%, at lower temperatures

There can be higher relative humidity below.

b. When the monthly average lowest temperature of the wettest month is 20 ℃, the monthly average relative humidity is 90%.

c. We have taken into account the condensation that may occur on the surface of the product due to temperature changes.

4. Pollution level

The pollution level used for the protector is level 2.

5. Installation category

Installation categories are II and III.

Main parameters and technical performance

Product Features

a、 Can withstand up to 40kA (8/20 μ s) lightning current surge;

b、 Action response time less than 25 nanoseconds;

c、 Adopting temperature control protection circuit

d、 High energy surge protection

e、 Remote signaling alarm interface

f、 Failure detection indication

g、 Standard modular installation

h、 Reaction speed: nanosecond level

i、 Built in instantaneous overcurrent circuit breaker device

Installation instructions

Before installation, the power must be cut off and live operation is strictly prohibited.

Suggest connecting fuses or automatic circuit breakers in series at the front end of the lightning protection module.

Please connect according to the installation diagram during installation, where+is the positive wire, – is the negative wire, and PE is the ground wire. Do not connect them incorrectly. After installation, close the automatic circuit breaker (fuse) switch,

Check if the working status is normal.

After installation, insert the module into place and check if the lightning protection module is working properly.

During use, the lightning protection module should be regularly checked and the status of the fault display window should be checked. When the fault display window is red or the remote signaling terminal outputs an alarm signal, it indicates that the lightning protection module has malfunctioned and should be repaired or replaced in a timely manner.

The parallel lightning protection module of the parallel power supply should be installed in parallel, and the connecting wires should be firm and reliable

Short, thick, and straight.

Product size

For electrical maintenance and installation, it is necessary to ensure that the operator holds the qualification for electrical work and takes necessary power-off and insulation protection measures.