This product is applicable to low-voltage power supply and distribution system with power grid voltage below 1000V and frequency of 50/60Hz. It is connected to the power line of three-phase power supply and distribution system in parallel to prevent damage to power supply system and electrical equipment caused by impulse surge and transient overvoltage caused by lightning stroke.This product has the advantages of large reserve current capacity, up to a level of 15kA (10/350us), safety and relibility, reasonable structure, and convenient installation.At the same time, it is designed with Kevin wiring method to ensure the best protection effect on the power supply system. This power supply lightning protection box is widely used for lightning protection and overvoltage protection of the main power supply in communication equipment rooms, computer rooms, communication, power, factories, mines, finance, civil aviation, railway s, and other systems.
Under normal working voltage, the lightning protection module is in a high resistance state, which does not affect the normal operation of the circuit. The failure indicator light of the lightning protection box does not light up (the lightning protector is working normally). When an instantaneous pulse overvoltage occurs on the line due to lightning strikes or switch operations, the lightning arrester module quickly conducts within nanosecond time, and the lightning counter displays a cumulative count of times to short-ircuit the overvoltage to the ground and release it. When the pulse overvoltage disappears, thelightning prctection module automatically restores the high resistance state, without affecting the user's power supply. When the surge current is too large and the current capacity exceeds the maximum value, the lightning protection modue deteriorates. The overcurrent and ovetheat release devices in this module will automatically dicnnect the lightning protection module dircuit, protecting tre power circuit from being affected and preverting fires; At this point, the failure indicator light turms red, indicating that the lightring arrester is faulty and reminding the user to replace it in a timely manner.
(1) The lightning protetion box of this power supply can only be installed by professional personnel, and the intallation position is in a place that cannot be directly touched by human hands. Before installation Confirm that it is a non live insallation and chedk if the power lightring protection box is intact. After power on, the work indicator light (green light) should light up normally, and the failure indicator light (not lit) should go out. If there is damage or the red indicator light is lit, it cannot be used.
(2) An independent air switch or fuse with a capacity of 32A-63A should be installed at the front end of the lightning protection box.
(3) Connect according to the L, N, and PE marked on the lightning protection box. The cross-sectional area of the connecting line of the phase line should not be less than 6mm2 The cros-sectional area of the wire ccnneclion should not be less than 10mm2 and should be as short, flat, and straight as possible.
|Protec ted mode||L-PE;N-PE|
|Nominal volatge Uₙ||380V AC|
|Maximum oper ating voltage Uc||385V AC|
|Nominal discharge current(8/20μs) In||40kA|
|Maximum discharge current(8/20μs) Imax||80KA|
|Voltage protection level Up||≤2,4kV|
|Response time ta||<25ns|
|The nominal cross-sectional area of the copper conductor for operation connection||Single or multiple stranded copper wire: 6mm2- 25mm2|
|Fault indication||red indication field|
|Degree of protection||IP20|
|Range of operating temperatures (min/max)||-40℃~+70℃|
|Mounting||Wall mounted installation|
|According to standard||EN 61643-11:2012, IEC 61643-11:2011 / T2|
|Remarks||Other Uc can be customized.(420VAC, 385VAC, 320VAC, etc.)|