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) Series provides the solutioin for in-pipe application.

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
Service voltage	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
start-up temperature		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