PROTECTOWIRE   PHSC-155-XCR

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• Line coverage…continuous sensitivity.
• Seven alarm temperature ratings.
• The ability to withstand severe environmental conditions.
• Approval for use hazardous locations.
• Ease of installation, testing, and splicing.
• Compatibility with other initiation devices on same circuit.
• Listed for spacing up to 50 ft. (15.2m).

Protectowire Linear Heat Detector is a proprietary cable that detects heat anywhere along its length. The sensor cable is comprised of two steel conductors individually insulated with a heat sensitive polymer. The insulated conductors are twisted together to impose a spring pressure between them, then wrapped with a protective tape and finished with an outer jacket suitable for the environment in which the detector will be installed.

Protectowire is a fixed temperature digital sensor and is therefore capable of initiating an alarm once its rated activation temperature is reached. At the rated temperature, the heat sensitive polymer insulation yields to the pressure upon it, permitting the inner conductors to move into contact with each other thereby initiating an alarm signal. This action takes place at the first heated point anywhere along the detector’s length. It does not require a specific length to be heated in order to initiate an alarm, nor system calibration to compensate for changes in the installed ambient temperature. Protectowire Linear Heat Detector provides the advantages of line coverage with point sensitivity.

• Cable trays
• Conveyors
• Power distribution apparatus: switchgear, transformers, motor control centers
• Dust collectors/baghouses
• Cooling towers
• Warehouses/rack storage
• Mines
• Pipelines
• Bridges, piers, marine vessels
• Refrigerated storage
• Tank farms
• Aircraft hangars

Ideally suited to industrial high risk hazards as well as many types of commercial applications, Protectowire Linear Heat Detector has unique advantages over other types of detectors, especially when difficult installation factors or severe environmental conditions are present.

When used with the appropriate Protectowire control equipment, the detector will activate a display, showing the location of an over heat or fire condition anywhere along its length. The detector also meets intrinsically safe standards and is Factory Mutual (FM) Approved for Class I, II, or III, Div. 1, Applicable Groups A, B, C, D, E, F & G hazardous areas, when used with suitably approved Protectowire control equipment.

• Alarm location identified and displayed, at the control panel, anywhere along its length when used with the exclusive Protectowire Alarm Point Location Meter.
• Sensitivity unaffected by changes in ambient temperature or length of cable used on the detection circuit. Compensating adjustments are not required.
• Installation and splicing is simple with common tools. Junctions can be made without effecting the integrity of the system.
• Compatibility with other types of alarm initiating devices on the same circuit such as manual pull stations, thermal heat detectors and smoke detectors.
• Installation possible in hazardous areas when used with suitably approved Protectowire control equipment.
• Full range of temperatures and models available to accommodate the most demanding applications.
• Different temperature detectors may be utilized in the same initiating circuit.
• Detectors available on integrated stainless steel messenger wire for installations where mounting is difficult such as large open areas.
• Test equipment is portable and available for easy field service.
• Detectors are ideal for activation of extinguishing equipment, such as deluge or pre-action sprinkler systems.

The detector is made in multiple temperature ratings to allow for differences in normal ambient temperature. Guidelines for selecting the proper detector temperature rating are the same as for automatic sprinklers and other heat actuated devices. Refer to the Temperature Rating Chart for proper model selection based upon installation temperature limits

The detector’s product range consists of two distinct types of cable. Standard PHSC models and low resistance “Universal” versions designated with the prefix PLR. Each model number designation also identifies a specific outer jacket material carefully selected to accommodate the widest range of installation environments. All specifications are subject to change without notice.

XCR – Type XCR consists of a high-performance fluoropolymer jacket and is designed for exterior environments as well as harsh interior applications. Features of this low smoke jacket include excellent chemical resistance, abrasion resistance, weather resistance, and high-temperature performance. XCR is the only detector that is FM-approved for corrosive environments.

The Protectowire Linear Heat Detector is approved as a heat actuated automatic fire detector and is intended to be used on a supervised initiating circuit of an approved fire protective signaling control unit. The detector must be installed in continuous runs without taps or branches in accordance with applicable sections of NFPA 70 National Electrical Code, NFPA 72 National Fire Alarm Code, or as determined by the local “authority having jurisdiction.”

Protectowire may be installed at the ceiling level or on the side walls within 20 inches of the ceiling, to protect areas within buildings (area protection). The detector has the additional benefit of being suitable for installation close to the hazard in order to provide a rapid response (proximity or special application protection).

On smooth ceilings, the distance between detector runs shall not exceed the listed spacing. There shall be a detector run within a distance of one half the listed spacing, measured at a right angle, from all walls, or partitions extending to within the top 15% of the ceiling height as shown in the illustration.

The listed spacing shall be used as a guide or starting point in detector installation layout. Reduced spacing is required based upon factors such as ceiling height and construction, physical obstructions, air movement, or when Protectowire is used to activate sprinkler systems, special Factory Mutual (FM) spacing guidelines may also be applicable to the specific hazard being protected. It is mandatory that engineering judgment be applied in determining final detector location and spacing.

In general, the use of Protectowire in any initiating device circuit, is limited to coverage of a specific hazard or area. Copper wire, of an approved type, with a minimum conductor size of 18 AWG, shall be installed from the control panel out to the hazard area where it is then connected to the beginning of the Protectowire portion of the circuit. The Protectowire portion of each initiating circuit shall begin and terminate at each end in an approved zone box or end-of-line zone box. SR-502 Series, Strain Relief Connectors, shall be installed in all zone boxes where Protectowire enters or exits the enclosure, in order to hold the cable securely.