AMA CORD RELAY is a Non Electric Surface delay initiating device, it provides delay between the holes & the rows in detonating cord. The delay is provided by cutting the detonating cord & attaching the cord relay to the cutting ends.
SPECIFICATION :- CORD RELAY consists of two delay devices housed in a white plastic component. Two holes are provided at either ends for threading the detonating cord. For identification delay nos. are mentioned on the component- CORD RELAY 17 ms CORD RELAY 25 ms CORD RELAY 50 ms CORD RELAY 67 ms CORD RELAY 100 ms

APPLICATION :-
 
Cord Relays can be used for providing various delay initiation pattern such as Row Delay, Diagonal Pattern, V Pattern,etc. where controlled blasting is required, Cord Relays can be used in such a manner that only one hole blasts at a time thus keeping maximum charge per delay.

ADVANTAGES :-

• Cord Relay are non electric and thus are immune to extraneous electricity sources and Radio Frequency (RF) energies.

• Use of tie-lines in the surface hook up provides two or three detonation paths thus minimising risk of fire.

• Use of a combination of Cord Relays of different timings allow large blasts to be carried out with minimum ground vibration. Firing of one hole at a time is possible where required.

PACKAGING :-

CORD RELAYS are packed in cartons of 50 Nos. each, such cartons are packed in wooden/cardboard cases. Cord Relays are packed in standard quantity of 1000 pcs.