Guangdong Uchi Electronics Co.,Ltd
Guangdong Uchi Electronics Co.,Ltd Manufactuer of Varistor, Thermistor, Capacitor,Fuse & Resistor since 2006 !
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Technical Parameters
| Model: | |||
| Maximum continuous voltage AC | Uc | V | 275/320/385/440 |
| SPD to EN 61643-11 | Type 1+2 | ||
| SPD to IEC 61643-1 | class I+II | ||
| Lightning impulse current (10/350µs) | Iimp | kA | 15-25 |
| Nominal discharge current (8/20µs) | In | kA | 40-80 |
| Maximum discharge current (8/20µs) | Imax | kA | 80-160 |
| Voltage protection level | Up | kV | < 1,5/1,8/2,0/2,2 |
| 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:
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
Benefits
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):
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.