40KA Type 2 Surge Protector / Earthing Lightning Protection System

OBV5-C40

The surge arrestors OBV5-C40-LT meet the type 2 requirement class according to IEC 61643-11. These devices protect low-voltage consumer systems from overvoltages of all types and are available in single-pole to four-pole versions. The use of high-performance varistors permits a rapid response time and a low protection level, without any line follow current. If circumstances are uncertain and there is a risk of fire from an overload, the internal cut-off unit disconnects the arrestor from the mains if necessary. In addition, the QR code printed on the arrestor allows disary. In addition, the QR code printed on the arrestor allows direct access to the online installation instructions.

Technical Parameters

Feature&Benefits

1,Protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage.
2,Protect transmission of Ethernet signals with 48V DC / 34V AC power supply circuits against
lightning induced surges.
3,Enhanced surge protection.
4,For mounting on 35mm DIN rails acc. to EN 60715.
5,It can effectively ensure the equipments work properly.
·Easy installation or retrofit.
·Din-rail mountable.
·Fail-safe /self-protected designRemote indicator (optional) with 3pin NO/NC contact.
·IP20 finger-safe designVisual indicator.
·Small foot print.

Application

●AC/DC distribution
●Power supplies
●Industrial automation
●Telecommunications
●Motor controls systems
●PLC applications
●Power transfer equipment
●HVAC applications
● AC drives
●UPS systems
●Security systems
●IT/Data centers

Lightning protection grounding

It is not only a systematic project but also a dangerous project. Direct lightning strikes have direct damage to the human body, while induced lightning will cause a huge impact on the equipment and damage the equipment in the equipment room. Therefore, it is not only good to understand the basic knowledge of lightning protection and grounding. The protective equipment room can better protect the personal safety of employees.

1. The use type and function of the arrester:

The commonly used surge arresters are valve type, exhaust type, zinc oxide, etc. The lightning arrester is used to protect the lightning overvoltage from intruding into the substation or other buildings along the line so as not to endanger the insulation of the protected object. Nowadays, zinc oxide surge arresters are often used outdoors in the power distribution, and valve arresters are generally used indoors.

2. The concept of safe current:

Safe current refers to the maximum current that the human body can get rid of after an electric shock. The safety current lightning protection device stipulated in our country is 30 mA. The safety current is related to factors such as the time of electric shock, the nature of the current, the path of the current, and the weight and health status.

3.The concept of safe voltage:

An area voltage refers to a voltage that does not directly cause death or disability. The safety extra-low voltage specified in our country is 36 volts.

4.The concept of land:

Electrical ground refers to a place where the potential is zero; this ground generally refers to a place about 20 meters away from the ground fault point.

5. The concept of working grounding and protective grounding:

The grounding to ensure that the power system and equipment meet the requirements of normal operation is called working grounding. The grounding to protect personal safety from contact with electricity is called protective grounding. For example: the neutral point of the transformer is grounded, and the grounding of the lightning arrester and the lightning arrester is the working ground. The grounding of the secondary side terminal of the transformer and the grounding of the equipment surge protector shell are the protective grounding.

Others

Technology SPD parameter(Note:According to user requirement ,can be customized Uc=140V,440V,550V,voltage range of range of the SPD):

Transient voltage surgesin lv power lines

Transient overvoltages are voltage surges that can reach tens ofkilovolts with a duration of the order of microseconds.Despite theirshort duration, the high energy content can cause serious problemsto equipment connected to the line, from premature aging to destruction, causing disruptions to service and financial loss.Thistype of surge can have various different causes, including atmospheric lightning directly striking the external protection(lightning rods) on a building or transmission line or the associatedinduction of electromagnetic fields on metallic conductors.
Outdoor and longer lines are the most exposed to these fields,which often receive high levels of induction.
It is also common for non-weather phenomena, such as transformer centre switching or the disconnection of motors orother inductive loads to cause voltage spikes in adjacent lines.

Importance of theground connection

Overvoltage protectors (SPD) divert excess energy toground, so limiting the peak voltage to an acceptablevalue for connected electrical equipment.
A ground connection in adequate condition is, therefore,a key aspect for effective protection against overvoltages.Monitoring ground connection condition guaranteesproper operation of surge protection devices.