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Heating cables

Self-regulated cable HTSX

htsxProcess Temperature Maintenance or Freeze Protection HTSX self-regulating heating cables are designed specifically for process temperature maintenance or freeze protection where high temperature exposure capability is required. HTSX withstands the temperature exposures associated with steam purging.

The heat output of HTSX cable varies in response to the surrounding temperature. Variations in the ambient temperature or heat lost through the thermal insulation are compensated for automatically along the entire length of a heat-traced pipe.

Features

  • Freeze protection
  • Medium to high process temperature maintenance
  • Steam clean/purge
  • Certified for use in ordinary (nonclassified) areas and in potentially explosive atmospheres

Construction Thermon HTSX

Конструкция Thermon HTSX1. Nickel-plated copper bus wires (16 AWG).

2. Semiconductive heating matrix and fluoropolymer dielectric insulation.

3. Plated copper braid.

4. Fluoropolymer overjacket provides additional protection for cable and braid where exposure to chemicals or corrosives is expected.

Ratings HTSXTM

  • Available watt densities: 3, 6, 9, 12, 15, 20 W/ft @ 50°F
    (10, 20, 30, 39, 49, 66 W/m @ 10°C)
  • Supply voltages: 110-120 or 208-277 Vac
  • Max. maintenance temperature 121: 302°F (150°C)
  • Max. exposure temperature: Intermittent power-on or off:482°F (250°C)
    Continuous power-off: 400°F (204°C)
  • Minimum installation temperature: - 76°F (- 60°C)
  • Minimum bend radius:
    °F (-15°C): 0.38” (10mm)
    76°F ( -60°C): 1.25” (32 mm)
  • T-rating:
    3,6,9,12, 15-2 W/ft: T3 392°F (200°C)
    15-1 and 20-1 W/ft: T2D 419°F (215°C)
    20-2 W/ft: T2C 446°F (230°C)
    Based on stabilized design: T3 to T6

Power output curves

The power outputs shown apply to cable installed on insulated metallic pipe (using the procedures outlined in IEEE 515) at the service voltages stated below. For use on other service voltages, contact Thermon.

Catalog number 120 vac nominal Catalog number 240 vac nominal Power output at 50°F (10°C) w/ft (m)
HTSX 3-1 HTSX 3-2 3 (10)
HTSX 6-1 HTSX 6-2 6 (20)
HTSX 9-1 HTSX 9-2 9 (30)
HTSX 12-1 HTSX 12-2 12 (39)
HTSX 15-1 HTSX 15-2 15 (49)
HTSX 20-1 HTSX 20-2 20 (66)

Circuit breaker sizing

Maximum circuit lengths for various circuit breaker amperages are shown below. Breaker sizing should be based on the National Electrical Code, Canadian Electrical Code or any other applicable code. The National Electrical Code and Canadian Electrical Code require ground-fault protection of equipment for each branch circuit supplying electric heating equipment. Check local codes for ground-fault protection requirements

120 vac service voltage Max.circuit length vs breaker size ft (m)
Catalog number Start-up temp °F (°C) 20А 30А 40А
HTSX 3-3 50 (10) 360 (109) 360 (109) 360 (109)
0 (- 18) 360 (109) 360 (109) 360 (109)
- 20 (- 29) 360 (109) 360 (109) 360 (109)
- 40(- 40) 360 (109) 360 (109) 360 (109)
HTSX 6-1 50 (10) 235 (71) 250 (77) 250 (77)
0 (- 18) 235 (71) 250 (77) 250 (77)
- 20 (- 29) 235 (71) 250 (77) 250 (77)
- 40 (- 40) 235 (71) 250 (77) 250 (77)
HTSX 9-1 50 (10) 170 (52) 205 (62) 205 (62)
0 (- 18) 170 (52) 205 (62) 205 (62)
- 20 (- 29) 170 (52) 205 (62) 205 (62)
- 40 ( - 40) 165 (50) 205 (62) 205 (62)
HTSX 12-1 50 (10) 135 (41) 175 (54) 175 (54)
0 (- 18)
175 (54) 175 (54)
- 20 (- 29) 135 (41) 175 (54) 175 (54)
-40 (- 40) 125 (38) 175 (54) 175 (54)
HTSX 15-1 50 (10) 100 (30) 160 (48) 160 (49)
0 (- 18) 95 (29) 150 (46) 160 (49)

-20 (- 29)

90 (27) 145 (44) 160 (49)
- 40 (- 40) 85 (26) 135 (41) 160 (49)
HTSX 20-1 50 (10) 85 (26) 130 (40) 140 (42)
0 (- 18) 80 (24) 120 (37) 140 (42)
- 20 (- 29) 75 (23) 115 (35) 140 (42)
- 40 (- 40) 70 (21) 110 (33) 140 (42)
240 vac service voltage Max.circuit length vs breaker size ft (m)
Catalog number Start-up temp °F (°C) 20А 30А 40А
HTSX 3-2 50 (10) 710 (217) 710 (217) 710 (217)
0 (- 18) 700 (214) 710 (217) 710 (217)
- 20 (- 29) 615 (187) 710 (217) 710 (217)
- 40 (- 40) 530 (162) 710 (217) 710 (217)
HTSX 6-2 50 (10) 470 (143) 505 (154) 505 (154)
0 (- 18) 114 505 (154) 505 (154)
- 20 (- 29) 114 505 (154) 505 (154)
- 40 (- 40) 95 505 (154) 505 (154)
HTSX 9-2 50 (10) 340 (104) 410 (125) 410 (125)
0 (- 18) 310 (95) 410 (125) 410 (125)
- 20 (- 29) 290 (88) 410 (125) 410 (125)
- 40 (- 40) 265 (81) 410 (125) 410 (125)
HTSX 12-2 50 (10) 270 (82) 355 (109) 355 (109)
0 (- 18) 245 (74) 355 (109) 355 (109)
- 20 (- 29) 230 (70) 355 (109) 355 (109)
- 40 (- 40) 215 (65) 340 (104) 355 (109)
HTSX 15-2 50 (10) 200 (61) 315 (96) 315 (96)
0 (- 18) 175 (53) 275 (84) 315 (96)
- 20 (- 29) 165 (51) 260 (79) 315 (96)
- 40 (- 40) 155 (48) 245 (74) 315 (96)
HTSX 20-2 50 (10) 155 (48) 245 (75) 275 (84)
0 (- 18) 140 (42) 215 (65) 275 (84)
- 20 (- 29) 130 (40) 205 (62) 275 (84)
- 40 (- 40) 125 (38) 190 (59) 265 (80)
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