Installation Of Cables And Sensors; Wiring Diagrams; Minimum Power Cable Sizing; Heating Cable - Raychem HWAT-ECO Bedienungsanleitung

2.3 Installation of cables and sensors

Tyco Thermal Controls insists on the use of a 30 mA residual current device
and a C-characteristic circuit breaker to provide maximum safety and
protection from fire.

2.3.1 Wiring diagrams

There are three wiring diagrams: C, D and E (see 5.5 Diagrams).
For connection of a single unit: Diagram
F1: Circuit breaker 20 A max. (C-Characteristic).
F2: Residual current device 30 mA.
For multiple unit connection on one phase system: Diagram
F1, F3, F5: Circuit breaker 20 A max. (C-Characteristic).
F2, F4, F6: Residual current device 30 mA
For multiple unit connection on a three phase system: Diagram
F1: Circuit breaker 3 x 20 A max. (C-Characteristic)
F2: Residual current device 3 x 30 mA
Double-pole electrical protection might be needed to comply with local elec-
trical standards.

2.3.2 Minimum power cable sizing

Fig. 2
Minimum cable size 3 x 1,5 mm
Use solid core wires for 1,5 mm
Ensure that the installation is compatible with applicable local electrical
requirements.
Warning: As over voltage protection (e.g. in case of thunderstorm) we
recommend the use of an external over voltage protection device

2.3.3 Heating cable

Fig. 3
Achievable
temperature
Heating cable
HWAT-L (Yellow)
HWAT-M (Orange)
HWAT-R (Red)
Above values are indications and depend on the insulation thickness.
Complete the heating cable tests (including the insulation resistance test) in
accordance with 5.4 (Checklist for problem-free installation and safe operation).
C - Characteristic circuit breaker
10A 13A
3 x 1,5 mm
2
diameters.
2
Ambient temperature
10°C 15°C
37 - 44°C 37 - 46°C
37 - 50°C 37 - 52°C
37 - 64°C 37 - 66°C
C
pag. 31
16A
3 x 1,5 mm
2
20°C
37 - 50°C
37 - 56°C
37 - 68°C
D
pag. 32
E
pag. 32
20A
3 x 2,5 mm
2 2
25°C
37 - 52°C
37 - 58°C
37 - 70°C
11