SRF(s)
Small Geometry Self-Regulating Heating Cable for Freeze Protection
FINE SRF(s) Series for freeze protection generates heat by a material of semi-conductor, showing a characteristic of PTC (Positive Temperature Coefficient).
PTC is characterized by the power output of heating cable adjusted to compensate for variations in ambient temperature. It produces more heat if the temperature drops and less heat if the temperature rises.
SRF(s) Series is a self-regulating cable heater, working on the PTC principle, requiring low electrical consumption.
SRF(s) Series is most suitable for protection of plumbs and pipes from freezing in winter.
Thanks to the small geometry (micro size), SRF(s) Seriesprovides the solutioin for in-pipe application.
Product construction
Product construction
1.Copper bus wire
2.Self-regulating conductive core
3.Inner adhesive jacket.
4.Modified polyolefin jacket
5.Tinned-copper braid
6.Modified polyolefin outer jacket (-CR) → for on pipe
Fluoropolymer outer jacket (-CT) → for on/in pipe
Long life time (semi-permanent)
SRF(s) Series is post-treated under elevated temperature in annealing process to give its stability in long-term operation without losing heat output.
Low energy consumption
The electrical consumption of SRF(s) Series is low due to its unique PTC property.
Excellent heat resistance
SRF(s) Series is treated by irradiation crosslinking reaction, providing the same level of thermosetting property as XLPE.
Cut to length
The heat generator of SRF(s) Series is composed of the infinite parallel connection of carbon particles, allowing it to be cut to the exact length required.
Product characteristics and design information
| information | |||
|---|---|---|---|
| Nominal power output | 10, 16 W/M | at 10℃ | |
| Max. maintenance temperature | 65℃ | ||
| Max. intermittent exposure temperature | 85℃ | ||
| Service voltage | SRF(s)1 | 100 – 120 Vac | |
| SRF(s)2 | 200 – 240 Vac | ||
Fine Korea offers a full range of connection Kit and end seal Kit for Power connection, splices, and end seal. Also
offers the in-pipe sealing kit. These accessories must be used all together to ensure proper functioning of the product and compliance with warranty, code, and requirements of approvals.
Power output graph
Max. length (m) vs. Circuit breaker size
| start-up temperature | 110V | 220V | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 10A | 15A | 20A | 30A | 10A | 15A | 20A | 30A | ||
| SRF(s)10-CR/CT | 10℃ | 70 | – | – | – | 120 | – | – | – |
| 0℃ | 60 | 75 | – | – | 110 | 130 | – | – | |
| -20℃ | 45 | 50 | 60 | – | 80 | 90 | 100 | – | |
| SRF(s)16-CR/CT | 10℃ | 50 | 60 | – | – | 85 | 100 | – | – |
| 0℃ | 45 | 50 | 60 | – | 80 | 95 | 100 | – | |
| -20℃ | 30 | 40 | 50 | 60 | 60 | 75 | 90 | 100 | |