2. ★ Japan Meteorological Agency formula choice Devices. HIRAKAWA Works, Inc. ＰｏｐｏｖＴｈ ｕｎｄｅｒ Coherer Type Lightning Prediction & Detection Devices For machinery control

3. Hazardous lightning Accident case 10km Striking point Place of the damage Thinking Thunder Roars in the distance but it strikes overhead all at once ！ Fatal accident due to late notice Fatal accident due to late notice Lightning Hit 00:00:0000:01:11 00:02:16 00:03:32 00:04:13 00:05:02 00:06:20 00:07:11 00:08:0500:11:0200:13:52

4. Hazardous lightning The thunder moves the wide area very fast. It is difficult for us to be opposed to movement of the thunder. When you go out outdoors, you must attention to general weather information enough beforehand. You can do only the movement that is much slower than the thunder. Therefore, All lightning detector and Lightning detection or Lightning prediction systems cannot completely protect you from lightning attacking your body directly. However, you can completely protect you from lightning attacking your body directly by using the weather information well. You should not think about only a method to survive when you were caught in thunder. Even if you got knowledge for you to survive no matter how much, you cannot completely protect you from lightning attacking your body directly. You always learn it positively and should practice how you must have it so that you are not caught in thunder from the beginning. The effort of this you is the most reliable thing which completely than lightning attacking your body directly protects you. Our PopovThunder is a part to remove the damage by the thunder such as electrics not to be able to do anything for by the effort of your own.

5. ＰｏｐｏｖＴｈ ｕｎｄｅｒ PopovThunder is a thunder detector to protect your equipment or system than Lightning. PopovThunder possesses all functions that are necessary to protect your equipment or system from Lightning, and all the movement is automatic. The thunder warning output from PopovThunder is only one, and there is not a thing bothering you. Open breakersOpen breakers Switch power sourcesSwitch power sources Change production lineChange production line Turn off or on valvesTurn off or on valves Operate automated equipmentOperate automated equipment Warning signal to fire stationsWarning signal to fire stations You can use the warning output from PopovThunder to your needs of the equipment or system at will.

6. Patent JP 3266884 US 6586920 ＰｏｐｏｖＴｈｕｎ ｄｅｒ Compact and Easy to install to existing circuit Compact and Easy to install to existing circuit Detection Unit HW-PR-101A Detection coil unit HW-PRPT-1

7. Installation view ○ Power source system at commercial radio station. ○ PopovThunder controls power breaker at left top. HERE! ＰｏｐｏｖＴｈｕｎ ｄｅｒ

8. A The 1st strike point B The 2nd strike point Lightning strike occurs at least where in the circle of radius AB and thinks that there was not the wonder. We define this circle as "hazardous zone". AB Hazardous zone If it is thunder of the summer when it is average, hazardous zone is about 10km, but, by the thunder of the winter to occur in North Japan and North Europe, enlarges hazardous zone than 60km. Hazardous zone changes with the speed of the Hazardous zone changes with the speed of the second. And Lightning strike occurs the next second. And Lightning strike occurs the next moment. moment. ＰｏｐｏｖＴｈｕｎｄｅｒ How it Works

9. Detect lightning before strikes When real Hazardous zone of the moment comes close to about 1km, PopovThunder outputs a warning signal without lightning. Detect lightning discharge When real Hazardous zone of the moment comes close to about 10km, PopovThunder detects lightning occurring in Hazardous zone and outputs a warning signal. Selectable Detection When it does not give system damage even if Hazardous zone comes close to about 10km, PopovThunder does not output a warning signal. This is calculated by the ability that a system resists Surge. Applicable at transmit station PopovThunder is hard to be affected by a strong transmission of a message electric wave, and there is little misdetection. Detect equipment electric sparks PopovThunder detects the terrible spark from the equipment which gives a system damage. ＰｏｐｏｖＴｈｕｎｄｅｒ How it Works

10. Warning before strike? Hazardous zone was in Defense zone. gone UsualWarning ＰｏｐｏｖＴｈ ｕｎｄｅｒ 25kA Less 25-100kA Less 100-200kA Less 200kA or more Scale of Lightning strike 10 ｋｍ Defense zone PopovThunder Hazardous zone Striking Point ＰｏｐｏｖＴｈｕｎｄｅｒ How it Works Plotting from actual data I PopovThunder detects lightning before strike. Defense zone is about 10km. In a calculation, Hazardous zone came close to 6km then. However, real Hazardous zone approached to less than 1km then, and PopovThunder output a warning.

11. gone No detect lightning even in hazardous zone that not affects with protected equipment & circuit. Detect Dangerous Lightning even if away from PopovThunder. 10 ｋｍ UsualWarning ＰｏｐｏｖＴｈ ｕｎｄｅｒ Defense zone PopovThunder Hazardous zone Striking Point ＰｏｐｏｖＴｈｕｎｄｅｒ How it Works 25kA Less 25-100kA Less 100-200kA Less 200kA or more Scale of Lightning strike Plotting from actual data Ⅱ

12. PopovThunder detects lightning comes closer or goes away. UsualWarning ＰｏｐｏｖＴｈ ｕｎｄｅｒ 10 ｋｍ Defense zone PopovThunder Hazardous zone Striking Point ＰｏｐｏｖＴｈｕｎｄｅｒ How it works 25kA Less 25-100kA Less 100-200kA Less 200kA or more Scale of Lightning strike Plotting from actual data Ⅲ

13. ○ PopovThunder is for lightning protection such as electrics. For example, you must not use PopovThunder for the purpose of protecting the body of the person from thunder. ○ It is necessary for lightning protection such as electrics to put some effective parts together definitely. PopovThunder is a part of that purpose.