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ZGLEDUN Surge Protective Device, SPD Surge Protector T2 Level Lightning Protection with Fusiable Core 8/20μs

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Product Description:

ZGLEDUN LD-MD series surge protective device is suitable for IT, TT, TN-C, TN-S, TN-CS and other power supply systems of low-voltage AC power distribution systems, and is used for indirect lightning and direct lightning or other transient overvoltage surges protection. This SPD series is class III surge protector designed and manufactured according to IEC61643-1:1998-02 standard and Class D surge protector. SPD has common mode (MC) and differential mode (MD) protection modes. This SPD series complies with standards GB18802.1 and IEC61643-1.

 

Main Structure and Working Principle:

This SPD with one-port, anti-shock protection function, indoor fixed installation, and of voltage limited type.

SPD has a built-in disconnector. When the SPD fails due to overheating or breakdown, the disconnector can automatically disconnect it from the grid and give an indication signal at the same time. The visible indicator is white when the SPD is working normally, and is red when it fails to disengage.

IP+N, 2P+N, and 3P+N are respectively composed of SPD+NPE zero-ground protection modules of IP, 2P, and 3P, which are used in power supply systems such as TT and TN-S.

 

Main Technical Parameters
Model LD-MD-20 LD-MD-10
Maximum Continuous Operating Voltage Uc (VAC) 750 420 385 320 275 750 420 385 320 275
Voltage Protection Level Up (KV) ≤ 2.5 1.8 1.5 1.4 1.2 2.0  1.6  1.3  1.2  1.0 
Maximum Discharge Current Imax(8/20μs) (KA) 20 10
Standard Discharge Current In  (8/20μs) 10 5
Response Time (ns) < 25ns
Protection Level IP20
Failure Indicator White Light: Normal          Red Light: Failure
Usage Lead-in linelevel 3 protection
Remote Signal Function Optional
Environment Temperature ℃ -40ºC to 80ºC
Remark Other maximum continuous working voltage Uc can be customized
          
Model LD-MD-40
Maximum Continuous Operating Voltage Uc (VAC) 100 275 420 385 320 275 175 48
Voltage Protection Level Up (KV) ≤ 3.5 3.0  2.0  1.8  1.6 1.5  1.3  0.6 
Maximum Discharge Current Imax(8/20μs) (KA) 40
Standard Discharge Current In  (8/20μs) 20
Response Time (ns) < 25ns
Protection Level IP20
Failure Indicator White Light: Normal          Red Light: Failure
Usage Lead-in linelevel 3 protection
Remote Signal Function Optional
Environment Temperature ℃ -40ºC to 80ºC
Remark Other maximum continuous working voltage Uc can be customized
           
Model LD-MD-60 LD-MD-80
Maximum Continuous Operating Voltage Uc (VAC) 1000 420 385 320 275 420 385 320 275
Voltage Protection Level Up (KV) ≤ 4.0  2.2 2.0  1.8 1.6 2.5  2.2  2.0  1.8 
Maximum Discharge Current Imax(8/20μs) (KA) 60 80
Standard Discharge Current In  (8/20μs) 30 40
Response Time (ns) < 25ns
Protection Level IP20
Failure Indicator White Light: Normal          Red Light: Failure
Usage Lead-in linelevel 3 protection
Remote Signal Function Optional
Environment Temperature ℃ -40ºC to 80ºC
Remark Other maximum continuous working voltage Uc can be customized
 SPD Surge Protective Device T2 Level Lightning Protection with Fusiable Core 8/20 μs
  Image  Model Number Related Current QTY/CTN Size
  LD-MD-20KA  4P 10~20KA 36 18mm
LD-MD-40KA  4P 20~40KA 36 18mm
LD-MD-60KA  4P 30~60KA 36 18mm
LD-MD-80KA  4P 60~80KA 36 18mm
  LD-MD-100KA  4P 80~100KA 24 27mm
LD-MD-120KA 4P 80~120KA 24 27mm

Measurement

 


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