Earth pole protection device

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Earth pole protection device
Posting date : Mar 30, 2012
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84-
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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

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