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INSTANTANEOUS COPPER ELECTRIC DETONATORS(CED)

Instantaneous Copper Electric Detonators (Permitted) offers a reliable means of controlled, simultaneous initiation of explosive charge. These are manufactured in No.8 strength in Copper shells. The Copper shells are fitted with electrical Fuse Heads. Precise consistency of the unique design of the Fuse Head is maintained by a fully automated process. PVC coated GI/Copper leg wires are sleeved through a PVC plug and crimped to the Detonator to ensure protection against moisture and water. The leg wires are water proof, ruggedly abrasion resistant, easy to strip and handle. The bare ends of the leg wires shunted for protection against stray currents.

Product Specifications:

Shell Material
Copper
Shell length
42mm
Strength
No.8
Type
Instantaneous
Lead wire colour
Half white / Red
Lead wire material
Steel / Copper Wire
Bare wire diameter
For steel wire - 25.5 SWG (0.46 + 0.02mm)
Lead wire resistance
For steel wire – 0.75 ± 0.10 Ohms/Mtr.
Standard wire Lengths
1.5M, 1.8M, 2.5M, 3.0M
Specific lengths are available on request.
Fuse –head Characteristics
  1. Resistance : 1.7 to 2.0 Ohms.
  2. Firing impulse : 3.2 milliwatt secs per ohm.
  3. Minimum firing : 1.2 amperes DC current.
  4. No fire current : 0.18 amps applied for 300 Seconds.
Packing Per box
1500 nos. per box (1.5 & 1.8 Mtrs.)
Case Dimensions
545 X 380 X 260 (external)
Gross Weight
22 Kgs.
Net Weight
20 Kgs.

Packing:

25 detonators are made into a bundle and two such bundles(50 No.s) are wrapped in Kraft paper to make it into a packet. 30 such packets will be placed in a corrugated card board box. In Case of 2.5 & 3.0 Mtrs. 25 detonators are made in to a bundle. 40 such packets will be placed in a corrugated card board box.

Applications:

The Instantaneous Copper Electric Detonators can be used in gassy underground mines and many other types of blastings.

Precautions:

DO(s)

  • Make sure that all connections are made with clean bare wire ends and if necessary freshly expose bare wire.
  • Make sure thatthe bare ends do not come in contact with any conductors such as power lines, pipes, rails or other paths of stray current.
  • Make sure that the shot-firing cable is connected to the exploder just before firing the shot and is immediately disconnected after
    the shot is fired. The exploder key must always be in the possession of the blaster and not kept on the machine.
  • Ensure that the exploder used is of adequate capacity and the current is of the desired magnitude for full initiation of the round.
  • Check the circuit for continuity before firing the shots. This must be done using only “BLASTERS” ohm-meter.

DONT(s)

  • Do not untwist the shunted ends of leg wires until just before connections are made.
  • Do not carry out shot firing in outside work area when an electrical storm is raging. Induced currents may set of sensitive detonators.
  • Do not connect detonators of different manufactures or firing characteristics in the same circuit/series.
  • Do not connect more detonators in one round than the capacity of the exploder.

Shipping Information:

As per IMDG (International Maritine Dangerous Goods) Classifications
Class: 1, Division: 1.1, Group: B, Un No.: 0030, Page No.: 1257, Storage Category: II TYPE 'C

As per PESO (Petroleum and Explosives Safety Organization) Classifications
ID No.: 716 ,Class: 6, Division: 3, Category: ZZ

 



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