chinese　　　　english
 
  　　This kind of Resistance-reduce-agent is composed of many ingredients, including electrolyte, curing agent, lubricant, electro-conductive cement and stuffing materials. As one excellent electric conductor, it is used between grounding part and earth. On the one hand, it can be closely connected to metal grounding to form enough current surface; on the other hand, it can infiltrate into soil near it to lower resistance and form one low resistance district around grounding parts.
 
 
     
 
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10.Surge Protection Device for Low-pressure Direct Current Power

■ QPDC direct current power parallel type surge protection device

Type
QPDC-12
QPDC-24
QPDC-48
QPDC-110
QPDC-220
QPDC-300
　 Order No.
5140
 　
5141
5142
5143
5144
5145
　 Rating Working Voltage Uo
12V
 　
24V
48V
110V
220V
300V
　Nominal Flow of Every Route lo
20KA
 　
20KA
20KA
20KA
20KA
20KA
　Continuous Anti-pressure of Every Route Uc
18V
38V
85V
180V
300V
700V
　 Protection Level Up
196V
245V
310V
510V
650V
＜1000V
　 Touch Current lo
＜10μA
　 Max. Dimension for Connecting Terminal
≤ 16mm2 multiplied yarn or 25mm2 single wire
　 Connecting Terminal Way
Parallel
　 Installation Way
35mm Standard Mounting Rail
　 Function Characteristic
aging guideline, aging thermal trip and short over-current trip (stopping fire and blast), hot backup
　 Application Domain
for equipment of low-voltage direct current
　 External Dimension
36mm×71mm×88mm
 

■QPAC Low-voltage direct cross power supply surge protection device

　Type QPAC-12　　 QPAC-24 QPAC-48 QPAC-110
　 Order No. 　　5150 　　5151 　　5152 　　5153
　 Rating Working Voltage Uo 　　12V 　　24V 　　48V 　　110V
　 Rating Working Current lo 　　20KA 　　20KA 　　20KA 　　20KA
　 Nominal Flow of Every Route lmax 　　88V 　　85V 　　180V 　　300V
　 Static Threshold Voltage (1mA) 　　245V 　　310V 　　510V 　　650V
　 Dynamic Residual Voltage (1KV/s) 　　＜10μA
　 Max. Connecting Terminal Dimension 　　≤ 16mm2 multiplied yarn or 25mm2 single wire
　 Connecting Terminal Way 　　Parallel
　 Installation Way 　　35mm Standard Mounting Rail
　 Function Characteristic 　　aging guideline, aging thermal trip and short over-current trip (stopping fire and blast), hot backup
　 Application Domain 　　for equipment of low-voltage direct current
　 External Dimension 　　36mm×71mm×88mm

■QPD Direct current power circuit series type surge protection device

　Type　　　　　　　　　　QPD-12　　　　　QPD-24　　　 　QPD-48　　　　
　 Order No. 　5200 　　5201 　　5202
　 Rating Working Voltage Uo 　12VDC 　　24VDC 　　48VDC
　 Rating Working Current lo 　10A 　　10A 　　10A
　 Nominal Flow of Every Route lmax 　10KA 　　10KA 　　10KA
　 Static Threshold Voltage (1mA) 　18DVC 　　36DVC 　　68DVC
　 Dynamic Residual Voltage (1KV/s) 　＜30DVC 　＜60DVC 　＜100DVC
　 Max. Connecting Terminal Dimension 　≤4mm2
　 Connecting Terminal Way 　Series, bolt fixing
　 Installation Way 　35mm Standard Mounting Rail
　 Function Characteristic 　three-grade protection; it will intermit if product aging; crust is anti-flame; hot backup
　 Application Domain 　communications, supervision and industrial automatization
　 External Dimension 　90mm×181mm×67mm