System Sensor Analogue Resettable Linear Heat Detection Cable (LHDC)
A heat sensing cable whose insulation changes resistance in proportion to temperature. It restores itself after a fire as long as its resettable limit of 120°C is not exceeded.
Dealer for System Sensor
System Sensor Digital Non-Resettable Linear Heat Detection Cable (LHDC)
A fixed temperature heat sensing cable whose thermal polymer sheath breaks down at a set temperature, letting the twisted conductors touch and signal an alarm without calibration for ambient temperature.
- Maximum zone length 3000 metres
- Multiple alarm temperature ratings
- Ambient range -40 to 121°C, depending on the alarm temperature
- Installed with an end of line device; the interface unit shows open and short circuit faults
- Works with conventional or intelligent fire alarm panels
- FM and UL approved, CE marked, RoHS compliant
Standards and approvals: FM, UL, CE, RoHS
Specifications
Specifications
| Specification | LHDC-DIGITAL |
|---|---|
| Construction: | Overall insulated, twisted pair of tri-metallic cores |
| Insulation: | 1kV tested protective outer coat |
| Additional Insulation Options: | Nylon or Polypropylene |
| Approvals: | CE Marked, RoHS Compliant, FM, UL |
| Maximum Zone Length: | 3,000m (10,000ft) |
| Wire Overall Diameter: | 3.60mm ± 0.12mm (0.142"± 0.005") |
| (Nylon/Polypropylene coated Dia.): | 4.50mm ± 0.12mm (0.177" ± 0.005") |
| Minimum bend radius: | 50 mm (2") |
| Ambient Temperature Range: | -40°C to 121°C (-40°F: 250°F) | (dependant upon action temperature) |
| Max Voltage Rating: | 30Vac, 42Vdc |
| Resistance: | ~100/km (29/kft) per leg |
| Velocity of Propagation: | ~55% |
| Capacitance: | 88 to 150 pF/m (26 to 45 pF/ft) |
| Inductance: | 540 to 1050 nH/m (165 to 320 nH/m) |
Specifications as published by System Sensor. Please confirm the exact model with us before ordering.
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