RP-D Pyrotechnical relay
RP-D pyrotechnical relay of high mechanical tolerance is designed for providing delays in blasting circuits of detonating cord in surface blasting and gas and dust safe underground mines and pits. It has 3 delay series: 20, 35, 45, 60, 80 and 100 ms. Delay series is identified by differentiating painting (marking) of connectors.
| Relay type |
Connector color |
| RP-D-20 |
Redish-Orange |
| RP-D-30 |
Yellow |
| RP-D-45 |
Red |
| RP-D-60 |
Blue |
| RP-D-80 |
Green |
| RP-D-100 |
Brown |
The relay consists of two delay blasting caps installed in connectors crimped by shock tube with the help of elastic plastic bushing. Case material: aluminium or aluminium alloy.
Connectors have four holes Ø 6.2 mm for connecting detonating cord to relay. RP-D relay is supplied in boxes fitting 150 to 200 pieces. UN number: 0384, classification code: 1.4 S.
|
Parameter |
RP-N |
RP-D |
|
Delay time, ms |
20 – 50 |
20 – 100 |
|
Structural strength:
load, Í.
lifetme, min |
20
3 |
50
3 |
|
Strength of joint with the detonating cord:
load, Í.
lifetme, min |
20
3 |
50
3 |
|
Water resistance, Mpa |
0.002 within
3 hours |
0.002 within
3 hours |
|
Moister resistance:
Relative humidity
Lifetime, days
Temperatures, °Ñ. |
95
10
25±10 |
95
10
25±10 |
|
Explosives weight, g |
14,8 |
2,4 |
|
Resistance to mechanical action (sliding shock), joule |
Not regulated, in effect up to 200 |
500 |
|
Operating temperature, °Ñ |
-35...+50 |
-40...+50 |
|
Warranty shelf life, years |
3 |
3 |
|