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ZGQ-11 Lightning Counter

General                                                                                
The ZGQ-11 lightning counter is used to record the current amplitude of the lightning waveform. Applying the principle of current induction, it can record the lightning current with amplitude in the range of 0.3 kA to 40 kA and output a dry contact signal for users to connect to other equipment.

Operating Environment  
Item
Specified Value
Power Supply
DC 24 V ± 10 %
Temperature
-40 ℃～+80 ℃
Relative humidity
5 %～95 %
Atmospheric pressure and altitude
62 kPa～106 kPa，-500 m～4000 m
Note: Installed outside the SPD, connected to the SPD conductor, and can only be used for indoor installation.

Product Configuration (Standard Configuration) 
Name
Quantity
Unit
Remarks
ZGQ-11 Lightning counter
1
PC
 /
Lightning current sensor
1
PC
 /
Performance Index 
Item
Index
Amplitude measurement range
Threshold current Itc (8/20 μs)
300 A
Maximum counting discharge current Imcw (8/20 μs)
40 kA
Output signal function
When the equipment detects a lightning strike, the dry contact signal changes from normally open to normally closed
Holding time of output count dry contact signal
≥ 500 ms
Power supply
External power (DC 24V ±10%)
Shell
Flame-retardant V-0 level
Installation method
Install the body on a standard 35mm rail, pass the ground wire through the inductor, fix it, and connect the inductor to the counter body.
System average power consumption
≤ 1 W
Protection level
IP 40

Standards Complied                                                                             
Q/75875187-9·7—2016 Lightning Monitoring System.
IEC 62561-6-2018 Lightning protection system components (LPSC) - Part 6: Requirements for lightning strike counters (LSC).

Working Principle                                                                             
The inductance probe is installed on the wire (generally the ground wire) through which the lightning current passes. When the lightning current comes, the inductance probe collects the lightning current signal and converts it into the voltage signal. After signal processing, the voltage signal is sent to the single-chip microcomputer. One record of lightning current is generated. The lightning current counting signal is transmitted to the user through the dry contact, and the signal holding time is ≥ 500 ms.

Configuration