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The general principle of lightning protection is:
(1) Use external protection to direct most of the lightning current into underground discharge.
(2) Use an overvoltage protector to block the overvoltage wave introduced along the power line, data line, and signal line (internal protection).
(3) Use an over-voltage protector to limit the surge voltage amplitude on the protected equipment.
(4) Use a photoelectric isolator to isolate the RS232 interface between communication and RTU to avoid electrical connection of interface equipment.
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
Model: OBV5-C40 | |||
Maximum continuous voltage AC | Uc | V | 275/320/385/440 |
SPD to EN 61643-11 | Type 2 | ||
SPD to IEC 61643-1 | class II | ||
Nominal discharge current (8/20< s) | In | kA | 20 |
Maximum discharge current (8/20< s) | Imax | kA | 40 |
Voltage protection level | Up | kV | < 1,3/1,5/1,8/2,0 |
Response time | tA | ns | < 25 |
Maximum back-up fuse | A | 125 | |
Temperature range | ϑ | ℃ | -40℃~+85℃ |
Protection rating | IP 20 | ||
Max. cable cross-section flexible (fine-wire) | mm² | 25 | |
Max. cable cross-section rigid (single wire/multi-wire) | mm² | 35 |
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
Others
Technology SPD parameter(Note:According to user requirement ,can be
customized Uc=140V,440V,550V,voltage range of range of the SPD):
Type No. | Rated Voltage(V) Un | Continuous Voltage Uc(V~) | Standard Discharge Current In(KA) | Max Discharge Current | Protection Level(KA~) | Response Time(ns) |
DGM1(2)-D5 | 220/380 | 275/320 | 5 | 10 | 1.2 | ≤25 |
DGM1(2)-D10 | 10 | 2 | 1.6 | |||
DGM1(2)-C20 | 20 | 40 | 1.8 | |||
DGM13-B30 | 30 | 60 | .2.2 | |||
DGM3(4)-B40 | 10 | 80 | 2.4 | |||
DGM(4)-B60 | 60 | 100 | 2.8 | |||
DGM-N-PE | 220/255 | 40/60 | 60/80 | 1.2 | ≤100 |
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.
Q: Can I get some samples?
A: Yes, Sample orders welcomed.
Q: Can I use my own Logo or design on goods?
A: Yes, Customized logo and design on mass production are
available.
Q:What is the delivery time?
A: 3 days for samples, 7-15 days for mass production.
Q: What is the payment term?
A: T/T, L/C at sight, West union , Paypal, etc.