SRM

Self-Regulating Heating Cable for Temperature Maintenance of Pipework

FINE SRM Series shows an excellent capability to maintain the temperature of pipes and plumbs in both chemical plant  a fodder plant, working on PTC (Positive Temperature Coefficient) principle.

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.

Utilizing the PTC characteristic, SRM Series regulates its own output depending on the exposure temperature,  thereby, reducing the risk of fire due to overheating.

The heat generator and insulating jacket of SRM Series are treated by irradiation crosslinking reaction, providing  an excellent stability even under elevated temperature.  Also SRM Series is configured for use in hazardous as well as nonhazardous locations because the heating cable is braided with tinned copper wires which can be connected  into the ground.

Product construction

Product construction

Product characteristics and design information

information
Nominal power output 30, 40, 50 W/M at 10℃
Max. maintenance   temperature

90℃

 
Max. intermittent   exposure temperature 100℃  

T-rating : T5

SRM1 100 - 130 Vac  
SRM2 200 - 254 Vac  

Power output graph

Max. length (m) vs. Circuit breaker size

 start-up
 temperature
  110V 220V
20A 30A 40A 50A 20A 30A 40A 50A
SRM30-CR/CT 10℃ 40 50 60 - 80 95 120 -
0℃ 35 45 50 60 70 85 100 120
-20℃ 30 35 45 55 55 70 90 110
-40℃ 25 30 40 50 45 60 80 100
SRM40-CR/CT 10℃ 33 38 48 - 65 75 95 -
0℃ 30 35 43 48 60 70 85 95
-20℃ 28 33 40 45 55 65 80 90
-40℃ 25 30 38 43 50 60 75 85
SRM50-CR/CT 10℃ 23 28 35 40 45 55 70 80
0℃ 20 25 33 40 40 50 65 80
-20℃ 18 23 30 38 35 45 60 75
-40℃ 15 20 28 35 30 40 55 70