Fusion Installation & Commissioning Manual Approved document No UI-FBU-01 issue 3.0
44
Radial circuit alarm / fault thresholds
CONVENTIONAL RADIAL CIRCUITS
TWIN WIRE RADIAL CIRCUITS
SDR SOUNDER RADIAL CIRCUITS
OPEN CIRCUIT
INFINITY TO 5K4
0 - 4.5mA
NORMAL
5K3 to 2K0
11mA - 4.5mA
FIRE
2K0 to 80R
40mA - 12mA
PRIORITY ALARM
300R to 80R
40mA
SHORT CIRCUIT
80R to 0R
42mA - 58mA
OPEN CIRCUIT
INFINITY TO 5K4
0 - 4.5mA
NORMAL
5K3 to 1K1
16.8mA - 4.5mA
DETECTOR REMOVAL
1K1 to 700R
40mA - 12mA
PRIORITY ALARM
300R to 80R
40mA
SHORT CIRCUIT
150R to 0R
58mA - 42mA
FIRE
690R to 150R
42mA - 25mA
OPEN CIRCUIT
INFINITY TO 5K4
0 - 4.5mA
NORMAL
5K3 to 1K1
16.8mA - 4.5mA
SHORT CIRCUIT
1K1 to 0R
16.8mA - 42mA