Electric caps ED-KZ-PKM
For conducting works under conditions where there is a high probability of an explosive methane-air environment, ED-KZ-PKM electric caps with explosion-proof coating of the outer surface of the shells are used. The upper value of their response time is limited to 200 ms—that is, by the time during which the explosive mixture does not have time to form at the moment of blast. In comparison with others, these electric caps have a higher power of the explosive charge to guarantee the initiation of a possibly humidified hole charge.
Use: In mines with dangerous gas or dust, in sites without dangerous static electricity discharge and ground currents.
Technical properties:
| Electric resistance | 1.8–3.6 Ohm |
| Safe pulse | at least 0.6 A²ms |
| Safe current | 0.200 (±0.005) А |
| Operative current guaranteed | 1.0 A |
| Longstanding ignition current | 0.220 (±0.005) А |
| Ignition pulse | 0.61–2.0 A² ms |
| Waterproof at a water pressure 2.0 MPa | 20 minutes |
| Temperature range of application | −50ºC to +50ºC |
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