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Technical data (cont´d)
Flame supervision
Operating voltage (Terminal 23 or 24)
Minimum detector current required
Maximum possible detector current
Short-circuit current
Maximum length of detector cable (laid separately)
10/24
Building Technologies Division
Infrastructure & Cities Sector
1)
AC voltage, measured with no detector current at AC 230 V mains voltage. Internal resistance of
measuring instrument 10 M. The shutter of the flame detector QRA53.../QRA55... is powered by
mains voltage
2)
Detector cable laid in a minimum distance of 5 cm from other mains carrying cable:
As a multiple cable
-
With 5 single wires
-
With a shielded 3-core control cable to terminals 3, 4 and 5 of the flame
detector QRA53.../QRA55... and standard mains cable to terminals 1 and 2
With 2 shielded single-core coaxial cables (45 pF/m, e.g. RG 62) to terminals
3 and 4 of the flame detector QRA53.../QRA55... and standard mains cable to
terminals 1, 2 and 5
If possible, shielding should be earthed at both ends
3)
Longer cable distances are permitted when connecting low-capacitance detector cables to terminal
24 of the burner control (especially against earthed wires!)
LOK16...
RAR9...
QRA5x.C...
QRA5x.E...
<DC 1 V
AC 280 V ¹)
±10%
±10%
DC 6 µA
DC 35 µA
DC 38 µA
DC 50 µA
---
---
100 m
²)
LGK16...
Ionization probe
QRA5x.D...
QRA5x.G...
AC 280 V ¹)
AC 245 V ¹)
±10%
±10%
DC 120 µA
DC 12 µA
DC 270 µA
DC 100 µA
---
Approx. AC 300 µA
²)
60 m ³)
Max. 50 m
Max. 70 m
Max. 15 m
Max. 60 m
CC1N7785en
06.03.2012
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