LZA-D120/D150
Application range
LZA-D120/D150 The earth pole protection device is mainly applied to avoid the danger of potential difference between different grounding grids. When lighting comes as the short distance among different grounding grids the
ground potential of some grounding grid may be elevated high simultaneously thus high potential difference occur with other grounding grids which may exist among network comsisting of circuit and device among different earth pole that is ground potential counterhit which may damage the device and hurt the people, Under this condition the earth pole protective device should be installed among different grounding grids so as to avoid ground potential counterhit.
Main features
☆ High discharge capacity, low residual voltage
☆ Build in high performance gas discharge tube or multilayer gap high security performance
☆ D120 introducing the structure of gas discharge tube and D150 introducing 3 layer gap structure strong arc-rupturing capacity.
☆ Modularized design convenient for installation and replacement introducing wiring terminal connection reliable and convenient wiring.
Main technical data
|
Type
|
LZA-D120
|
LZA-D150
|
|
Max. continuous Voltage Uc V
|
255
|
255
|
|
Leakage current (75% Uc)
|
0
|
0
|
|
Norminal discharge current In (8/20μs) kA
|
120
|
150
|
|
Impulse discharge current Iimp(10/350μs)kA
|
20
|
50
|
|
Electrode
|
single electrode
|
triple-layer electrode
|
|
Response voltage
|
600V
|
1000V
|
|
Response time
|
<100ns
|
|
|
Enclosure material
|
enhanced flame retardant nylon
(light gray ,flame retardancy:V0)
|
|
|
Cross-sectional area
|
≥16mm 2 stranded/ flexible
|
|
Installation instruction
Earth pole protection devices are applied between the main equipotential bonding bar of different power network, these equipotential bonding bars are linked by connection cable and protector the length of connection line should be as short as possible usually less than 0 5m in order to avoid the inductive overvoltage caused by too long line