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Alarm (fire alarm) cables J-Y(St)Y

The J-Y(St)Y cable is used to transmit diagnostics and alarm signals, and is also used in the power supply circuits of alarm systems. It is intended for operation with a rated alternating voltage up to 300V with a frequency of 50 Hz.

It is installed inside buildings in cable channels, along the inner walls. Cables with an alumopolymer screen are used in places exposed to increased electrical noise.

Structure
  1. Copper wire;
  2. Conductor insulation of PVC compound;
  3. Tinned copper wire;
  4. Screen;
  5. Outer sheath of PVC compound;
01
Copper wire
02
Conductor insulation of PVC compound
03
Tinned copper wire
04
Screen
05
Outer sheath of PVC compound
01
02
03
04
05
  1. Copper wire
  2. Conductor insulation of PVC compound
  3. Tinned copper wire
  4. Screen
  5. Outer sheath of PVC compound

Technical characteristics of cable

Cable make-up
Weight of 1 km of cable, kg
Outer diameter, mm
Factory length, m
J-Y(St)Y 2х2х0,8+0,6 FIRE ALARM CABLE 47,5 6,4
300

Electrical parameters of the cable

Parameters Current frequency, kHz
Normal value
Resistance of the current-carrying conductor of cable, adjusted to 1 km length and temperature 20 °С, max., Ohm/km, for conductors with diameter, mm:
0,5
0,8
DC 96
36,6 
Resistance of the current-carrying conductor of cable, adjusted to 1 km length and temperature 20 °С, max., Ohm/km, for conductors with cross-section, mm2:
0,75
DC 26,0 
Resistance of cable conductor insulation, adjusted for 1 km length and temperature of 20 °С, MOhm*km (min.) DC 150 
Rated alternating voltage, V: 0,05 300
Test voltage for 1 minute, V:
- between conductors and cable screen
- between conductors of operating pairs of cable
DC 750
1000 


Resistance to EFA

Type of EFA
EFA value for cables
Operating temperature, °С -40 to +50
Installation temperature, °С -10 to +50
Storage and transportation temperature, °С -40 to +50
Minimum installation temperature, °С -10
Relative humidity at +35 °С,% 98

!!! Ordering details
Example of notation when ordering an alarm system cable with four current-carrying copper conductors with a diameter of 0.8 mm, twisted into a symmetrical quad, with PVC compound insulation, in a foil screen, with a 0.6 mm tinned copper conductor and PVC compound sheath.

Cable J-Y(St)Y 2х2х0,8+0,6


-Y
(St)
Y 2 х2 х0,8 +0,6
Diameter of tinned copper conductor
Diameter of insulated conductor
Paired core
Number of pairs in the core
Outer sheath of PVC compound
Cable with electrostatic screen
Conductor insulation of PVC compound
Cable type

Order