Lamtec GFI 48 Operating Instructions Manual page 22

3 Product Description
Versions A and B: Integrated flame scanner
Intrinsic error
Electrical safety
Min. impedance of the connected
measuring device
1
The product is not permitted to be transported, stored or operated outside the specified range.
Doing so will invalidate any guarantees with regard to safety relevant functions.
2
Provide external spark quenching for inductive loads, do not connect any capacitive loads.
NOTICE
Use device manufacturer recommended silicone shielded cable. The device manufacturer will
only guarantee proper functioning if this cable is used. This cable is available in any length up
to the maximum cable length.
Design B: Connection of external flame scanner to the ionisation electrode
Recommended cable specifications
Cable type
Cable lengths
Inner conductor
Wire insulation
Shield
Outer shell
Conductor resistance
Operating capacity
Rated voltage
Test voltage
Temperature range
Design B and C: Power supply voltage connection to the external ignition transformer
Recommended cable specifications
Cable lengths
Cable cross-section
Isolation
Temperature range
Design C: Connection of external ignition transformer to the ignition electrode
Electrical data
Ignition voltage to earth
Recommended cable specifications
≤ 2%
Contact protection by means of protective impedances
1 MΩ
RG62 coaxial cable
< 10 m/32,8 ft
Solid copper-plated steel wire, uninsulated Ø: 0.64 ± 0.025
mm (0.025 ± 0,00098 in)
PE hollow space insulation (helix made from PE strands with
PE hose on top) Ø: 3.7 mm (0.14 in)
Braided from bare Cu wires, 96 % coverage
(nominal value)
PVC, black outside diameter: 6.15 ± 0.18 mm (0.24 ± 0.0070
in)
max. 144 Ohm/km
max. 43 pF/m (1 kHz)
0.8 kV (50 Hz)
2 kV
-40 °C to 80 °C (-40 °F to 176 °F)(fixed installation)
Max. 200 m (656.168 ft)
2
3 x 1.0 mm (3 x 17 AWG)
PVC
-40 °C ... +90 °C (-40 °F ... 194 °F)
max. 8 kV (at UN=230 V)
max. 7 kV (at UN=120 V)
21