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Permission type electronic detonator in coal mine



Product accessories:

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Product Description

Overview:It is suitable for blasting engineering in underground coal mine, and is not affected by gas, combustible gas and coal dust when used.

Technical parameters:

Product Name Shell Material detonator length Foot line specifications Foot line length Ground connection
Permission type electronic detonator in coal mine Iron or copper 85mm Outer diameter Φ3mm wire core Φ0.5mm steel wire 3m (can be determined according to user needs) Φ0.6mm core copper wire

Main performance indicators:
● Delay time and accuracy: the delay time setting method is preset, and the maximum delay time is ≤ 130ms and the error is ≤ 1.5ms.
● Networking capacity: 1m ~ 20m foot line can detonate 200 detonators at one time.
● Initiation ability: it can blow through a lead plate with a thickness of 5mm, and the perforation diameter of the lead plate is not less than the outer diameter of the detonator.
● Electrostatic sensitivity: under the conditions of 500pF capacitance, 5000Ω series resistance and 25kV charging voltage, the product will not explode when discharging the foot-shell and foot-foot.
● Anti-AC and DC performance: AC220V, DC48V, keep for 10s, the product does not explode.
● Temperature resistance: the product can be reliably detonated for 4h at a low temperature of -40 ℃; it can be reliably detonated for 4h at a high temperature of 85 ℃.
● Water resistance: the product shall be immersed in 0.5MPa (equivalent to 50m) of water, and shall be normally detonated after being taken out for 72h.
● Safety degree of combustible gas: when detonated in the combustible gas with a concentration of 9%, the combustible gas shall not be detonated.

● When transporting, it should be handled with care, and friction and impact are strictly prohibited.
● Keep away from fire and heat sources to prevent sun, rain and moisture.
● It is forbidden to use the detonator as a drilling tool.
● This product shall not coexist with explosives and detonating cord.

Storage conditions:Sealed packaging conditions, stored in a well-ventilated, dry, fire-proof, anti-theft warehouse.
Shelf life:The shelf life is 24 months from the date of manufacture.
Packing form:The inner packing of this product is plastic bag, and the outer packing is corrugated box. Meet the requirements of WJ9085.

Product Name Foot line length Packing quantity Carton size
electronic detonator 2 m ~ 5 m 200 hair 615 × 325 × 265
4 m ~ 7 m 100 hair 470 × 320 × 260
8 m ~ 10 m 100 hair 615 × 325 × 265
11 m ~ 13 m 100 hair 610 × 300 × 300
14 m ~ 20 m 50 rounds 615 × 325 × 265
25 m ~ 30 m 50 rounds 610 × 300 × 300




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