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Self-regulating trace heating systems
Notes
* Limitations may apply to the trace heater circuit length, in order not to exceed the maximum allowed operating current (steady state). Consult
the manufacturers trace heating system design documentation, containing the calculated operating current of the applicable trace heating circuit.
** PBTW is limited to use in trace heating circuits protected by a 16 A rated over current protection, see electrical data above.
# Maximum surface temperature of installation enclosures:
- with trace heaters installed and operating (with steady state operating current);
- with the installation enclosures positioned in the worst case orientation with maximum amount of accumulated dust layer (limitations to the ori-
entation of installation do not apply).
## Maximum sheath temperature trace heater, installed on workpiece.
### System comprising installation enclosure and trace heaters.
Trace heater Installation Enclosure as End of Line Light kit and End of Line Seal kit
Junction box with mounting stand
Max. workpiece temperature
mounting stand
3
Terminals
Max. power conductor size
Maximum circuit breaker size:
6
Power supply
Ambient temperature range
Min. installation temperature
Ingress Protection
Connection Technology (CAK)
Maximum withstand temperature /
max. service tem-perature end seal
Min. installation temperature
System components
Workpiece temperature
range
7
Terminals
Maximum circuit breaker
size
8
Power supply
Ambient temperature range
Min. installation temperature
Minimum Temperatur re-
sistance of supply cable
9
Sealing area supply cables
Ingress protection
Protecting of all components of the branch circuit against over-current; choice depending on design parameters
6
Observe Technical Data of the Heating Cable
7
Protecting of all components of the branch circuit against over-current; choice depending on design parameters
8
For supply cable type selection, the permissible operating temperature at the conductor is to be observed with respect to the maximum ambient temperatue of the product
9
21-1S00-7D0001/-
05/2023-EHT-466853
Design Guide for Hazardous / Industrial
ELL-200-E
+240 °C
Spring clamp Ex e: 1x3 PE
ComEx Lamp module
IP 64; IP 66 (EN 60529)
Plexo TCS Heating System
-60 °C to +160 °C
Spring clamp
0,5 mm² to 4 mm²
32 A
max. 254 Vac
-
-55 °C
PSB:
+80 °C for system in T5
+125 °C for system in T3
+75 °C for system in T6
+95 °C for system in T4
9 mm to 16 mm (for types 27-59P1.../...)
IP 65
IP 66, IP 68 (EN 60529)
Notice Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
ELL-300-E
-
Spring clamp Ex e: 1x3 PE
ComEx Lamp module
Trace heater bus wires only
32 A
max. 277 Vac
-55 °C to +40 °C
-55 °C
-
-60 °C
Power cable 6 mm², Control cables 2.5 mm²
MSB:
ELS-200-E
+240 °C
-
-55 °C to +55 °C
IP 66 (EN 60529)
+200 °C
ESTM Temperature Controller
-
Spring clamp
32 A
230 V +10%-20%, 50 Hz
-55 °C to +55 °C
-55 °C
-
12 mm to 17 mm power cable
5 mm to 8 mm control cable
IP 65
Page 8 / 42
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