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industry Electric Detonator（Chinese national standard GB8031）
Performance
| Item | Performance |
| Resistance | Galvanized steel core Leg-wire ≤3.9Ω, with range ≤1.0Ω |
| Safety current | Charging with 0.2A constant direct current for 5mins, no explosion |
| Minimum firingcurrent | ≤0.45A |
| Firing impulse | ≥2.0A2 ·ms |
| Series firing current | 20 pieces electric detonators are connected into series circuit, and charge with 1.2A electric current, and all detonators fire. |
| Initiating Power | Have a lead plate test, piercing into 5mm lead plate, the holediameter should no smaller than the out-diameter of the detonator |
| Tensile property | Pull with 19.6N static tension for 1 min, no damage to sealing plugand leg-wire. |
| Jolt test | Vibrate for 10min on the jolt machine, no explosion, structuredamage, short circuit, open circuit and unstable performance
occurs. |
| Anti static | Legwire to shell discharge with 8kv voltage, 2000pf capacitanceand 0Ω series resistor, no firing. |
| Combustible gas
safety degree |
When initiating a permissible electric detonator in the combustiblegas of 9%, the combustible gas should not be ignited. |
Technical index
Specification: No.8
Shell outer diameter: Φ6.9mm
Shell：Flange
Shell length：50~70mm
Leg wire: Galvanized steel, copper, copper clad steel
Leg wire length: 2m(can be ensured according to the requirements of customers)
Ignite element: Elastic fuse head, rigid fuse head
Variety: Common electric detonator, permissible electric detonator
Delay Time: According to Chinese national standard GB8031
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