Ignition circuit (blasting technology)

As ignition circuit in which it is blasting all the electrical connection of all electric detonators called.

An ignition circuit consists of:

• Blasting machine ,
• Ignition cable ,
• Extension wires ("protection wire"; optional),
• electric detonators.

Ignition circuit tester in the Uranium Mining Museum , Schneeberg (Ore Mountains)

Before the detonation, the ignition circuit must be checked with an ignition circuit tester , a resistance measuring device certified by the Federal Institute for Materials Research and Testing (BAM), which prevents accidental detonation of the detonators during the measurement. The measured electrical resistance must match the previously calculated ignition circuit resistance . This is used to check whether you have accidentally forgotten to install the igniter in the ignition circuit or whether there are any wire breaks or bad contact points. Furthermore, the electrical resistance of the ignition circuit to earth (shunt) must be measured. Only when this measurement is positive may the blasting machine be connected and the explosive charges detonated.

Individual evidence

1. ↑ Explosive TR310. Section 4.5.1 (10). Federal Ministry of Labor and Social Affairs, October 5, 2016, p. 7 , accessed on April 25, 2017 . 

Web links

• First experiences with the radio-controlled triggering of electronic i-kon ignition systems (accessed on July 9, 2020)
• Stage pyrotechnics (accessed on July 9, 2020)
• Electric Ignition - An Introduction (accessed July 9, 2020)
• DGUV rule 113-016 blasting work (accessed on July 9, 2020)
• Storage, safekeeping and use of - explosives, detonators and blasting accessories (accessed July 9, 2020)