Protectowire
Introduction
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 that a specific length be heated in order to initiate an alarm nor is system calibration necessary to compensate for changes in the installed ambient temperature. Protectowire Linear Heat Detector provides the advantages of line coverage with point sensitivity.
Protectowire Features & Benefits
- Identifies and displays, at the control panel, the alarm location anywhere along its length when used with the exclusive Protectowire Alarm Point Location Meter.
- Sensitivity not effected by changes in ambient temperature or length of cable used on the detection circuit. Compensating adjustments are not required.
- Steel inner conductors and select outer jackets, provide resistance to mechanical damage.
- Simple to install and splice with common tools. Junctions can be made without effecting the integrity of the system.
- Compatible with other types of alarm initiating devices on the same circuit such as manual pull stations, thermal heat detectors and smoke detectors.
- Can be installed in hazardous areas when used with suitably approved Protectowire Fire System Control Panels.
- Full range of temperatures and models available to accommodate the most demanding applications.
- Different temperature detectors may be utilized in the same initiating circuit.
- Available on stainless steel messenger wire for installations where mounting is difficult such as large open areas.
- Portable test equipment available for easy field service.
- Ideally suited for activation of extinguishment equipment, such as deluge or pre-action sprinkler systems.
Description
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 five distinct types of cable. Each designation identifies a specific outer jacket material which has unique characteristics that have been selected to accommodate the widest range of installation environments. All specifications are subject to change without notice.
EPC: Type EPC Protectowire consists of a durable flame retardant vinyl outer jacket. This series is best described as multi-purpose and is well suited to a wide range of both commercial and industrial applications. The outer jacket provides good all-around performance for most installations. It features low moisture absorption, resistance to many common chemicals, and excellent flexibility at low temperatures.
EPR: The EPR series contains an extruded flame retardant jacket of polypropylene elastomer with a special UV stabilizer added to enhance weathering performance. It is intended for a wide range of industrial applications and is characterized by high resiliency, good abrasion resistance, excellent weathering properties, and flexibility over a wide temperature range.
TRI: Type TRI Protectowire is a unique dual temperature detector which is capable of initiating separate pre-alarm and alarm signals once each of its rated activation temperatures is reached. The Detector consists of a durable vinyl outer jacket which features low moisture absorption, resistance to many common chemicals, excellent flexibility and flame retardant. For complete information on this product, please refer to Data Sheet 9114.
XCR: Type XCR utilizes a high performance fluoropolymer jacket. This detector is specifically designed for use in applications where extreme environmental and product performance criteria must be met.
In general, the flame retardant, low smoke XCR jacket provides excellent abrasion resistance and mechanical properties over a broad range of temperatures. It provides excellent chemical and permeation resistance to a wide variety of acids, bases, and organic solvents as well as simple gases. In addition, the jacket exhibits very little change in tensile properties upon outdoor exposure to sunlight and weather.
XLT: Protectowire Type XLT is a unique detector that has been designed for use in cold storage facilities and other applications that require a low alarm activation temperature. The outer jacket consists of a proprietary flame retardant polymer that is specifically formulated to provide low moisture absorption, good chemical resistance, and excellent low temperature environmental performance.This detector has been UL and FM tested to -60oF (-51oC).
Applications
- 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 a Protectowire Fire System Control Panel, 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 FM Approved for Class I, II, or III, Div. 1, Applicable Groups A, B, C, D, E, F & G hazardous areas, when the appropriate control panel option is ordered.
Specifications
- Maximum Voltage Rating: 30 VAC, 42 VDC
- Resistance 2W Models: .2 ohms/ft. (.656 ohms/m)
- Resistance TRI-Wire: .3 ohms/ft. (.984 ohms/m)
- TRI-Wire Conductor Color Code:
- Pink: 155 oF;
- Clear: 200 oF;
- Black: Common
- Min. Bend Radius: 2.5 inches (6.4cm)
- Diameter: Nominal 5/32 inch (4mm)
- Weight: Nominal 8lbs./500 ft. (3.6 kg/152m)
