EN 54-5Fire detection and fire alarm systems — Part 5: Heat detectors — Point detectors

1 Scope
This European Standard specifies the requirements, test methods and performance criteria for point heat detectors for use in fire detection and fire alarm systems for buildings (see EN 54-1:1996).
For other types of heat detector, or for detectors intended for use in other environments, this standard should only be used for guidance. Heat detectors with special characteristics and developed for specific risks are not covered by this standard.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
3 Terms and definitions
For the purposes of this standard, the following terms and definitions and those given in EN 54-1:1996 apply:
3.1
typical application temperature
temperature that an installed detector can be expected to experience for long periods of time in the absence of a fire condition
NOTE: This temperature is deemed to be 29 °C below the minimum static response temperature, according to the class marked on the detector, as specified in Table 1.
3.2
maximum application temperature
maximum temperature that an installed detector can be expected to experience, even for short periods of time, in the absence of a fire condition
NOTE: This temperature is deemed to be 4 °C below the minimum static response temperature, according to the class marked on the detector, as specified in Table 1.
3.3
static response temperature
temperature at which the detector would produce an alarm signal if subjected to a vanishingly small rate of rise of temperature
NOTE: Rates of rise of temperature of approximately 0,2 K min-1 are normally found to be suitable for measuring this, however lower rates can be required in some instances (see 5.3).
4 Requirements 4.1 Compliance
In order to comply with this standard the detector shall meet the requirements of this clause, which shall be verified by visual inspection or engineering assessment, shall be tested as described in clause 5 and if applicable clause 6, and shall meet the requirements of the tests in accordance with its marked class(es).
4.2 Classification
Detectors shall conform to one or more of the following classes: A1, A2, B, C, D, E, F or G according to the requirements of the tests specified in clause 5 (see Table 1).
Manufacturers may optionally give additional information concerning the type of response exhibited by the detector, by adding the suffix S or R to the above classes . Detectors, which are marked with the letter S or R as a suffix to the class marking, shall be tested in accordance with the applicable test, specified in clause 6, and shall meet the requirements of that test, in addition to the tests of clause 5.
4.3 Position of heat sensitive elements
Each detector shall be constructed such that at least part of its heat sensitive element(s), except elements with auxiliary functions (e.g. characteristic correctors), shall be > 15 mm from the mounting surface of the detector.
4.4 Individual alarm indication
Class A1, A2, B, C or D detectors shall be provided with an integral red visual indicator, by which the individual detector, which released an alarm, can be identified, until the alarm condition is reset. Where other conditions of the detector can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the detector is switched into a service mode. For detachable detectors the indicator may be integral with the base or the detector head. The visual indicator shall be visible from a distance of 6 m directly below the detector, in an ambient light intensity up to 500 lux.
Class E, F or G detectors shall be provided with either an integral red indicator, or with another means for locally indicating the alarm status of the detector.
4,5 Connection of ancillary devices
Where the detector provides for connections to ancillary devices (e.g. remote indicators, control relays), op en- or short-circuit failures of these connections shall not prevent the correct operation of the detector.
4.6 Monitoring of detachable detectors
For detachable detectors, a means shall be provided for a remote monitoring system (e.g. the control and indicating equipment) to detect the removal of the head from the base, in order to give a fault signal.
4.7 Manufacturer’s adjustments
It shall not be possible to change the manufacturer’s settings except by special means (e.g. a special code or tool, or by breaking or removing a seal).
4.8 On-site adjustment of response behaviour
If there is provision for on-site adjustment of the response behaviour of the detector then:
a) for each setting at which the manufacturer claims compliance with this standard, he shall declare a corresponding class, and for each such setting the detector shall comply with the requirements of this standard for the corresponding class, and access to the adjustment means shall only be possible by the use of a code or special tool or by removing the detector from its base or mounting;
b) any setting(s) at which the manufacturer does not claim compliance with this standard shall only be accessible by the use of a code or special tool, and it shall be clearly marked on the detector or in the associated data, that if these setting(s) are used, the detector does not comply with the standard.
NOTE: These adjustments may be carried out at the detector or at the control and indicating equipment.
4.9 Marking
For detachable detectors, the detector head shall be marked with a), b), c), d) and f), and the base shall be marked with at least d) (i.e. its own model designation) and e).
Where any marking on the device uses symbols or abbreviations not in common use then these shall be explained in the data supplied with the device.
The marking shall be visible during installation of the detector and shall be accessible during maintenance. The markings shall not be placed on screws or other easily removable parts.
4.10 Data
Detectors shall either be supplied with sufficient technical, installation and maintenance data to enable their correct installation and operation ‘ or, if all of these data are not supplied with each detector, reference to the appropriate data sheet(s) shall be given on or with each detector.
For detectors with provision for on-site adjustment of their class, these data shall identify the applicable classes and shall describe the method of programming (e.g. by selecting a switch position on the detector or a setting from a menu in the control and indicating equipment).
NOTE: Additional information may be required by organizations certifying that detectors conform to the requirements of this standard.
4.11 Additional requirements for software controlled detectors
4.11.1 General
For detectors which rely on software control in order to fulfil the requirements of this standard, the requirements of 4.11.2, 4.11.3 and 4.11.4 shall be met.
4.11.2 Software documentation
4.11.2.1 The manufacturer shall submit documentation which gives an overview of the software design. This documentation shall be in sufficient detail for the design to be inspected for compliance with this standard and shall include at least the following:
4.11.2.2 The manufacturer shall have available detailed design documentation, which only needs to be provided if required by the testing authority. It shall comprise at least the following:
4.11.3 Software design
In order to ensure the reliability of the detector, the following requirements for software design shall apply:
a) the software shall have a modular structure;
b) the design of the interfaces for manually and automatically generated data shall not permit invalid data to cause error in the program operation;
c) the software shall be designed to avoid the occurrence of deadlock of the programme flow.
4.11.4 The storage of programs and data
The program necessary to comply with this standard and any preset data, such as manufacturer’s settings, shall be held in non-volatile memory. Writing to areas of memory containing this program and data shall only be : possible by the use of some special tool or code and shall not be possible during normal operation of the detector.
Site-specific data shall be held in memory which will retain data for at least 2 weeks without external power to -the detector, unless provision is made for the automatic renewal of such data, following loss of power, within 1 h of power being restored.
5 Tests 5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been allowed to stabilize in the standard atmospheric conditions for testing as described in IEC 60068-1:1988+A1:1992 as follows:
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable supply and monitoring equipment with characteristics as required by the manufacturer’s data. Unless otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the manufacturer’s specified range(s) and shall remain substantially constant throughout the tests. The value chosen for each parameter shall normally be the nominal value, or the mean of the specified range. If a test procedure requires a specimen to be monitored to detect any alarm or fault signals, then connections shall be made to any necessary ancillary devices (e.g. through wiring to an end-of-line device for conventional detectors to allow a fault signal to be recognized).
5.1.3 Mounting arrangements
The specimen shall be mounted by its normal means of attachment in accordance with the manufacturer’s instructions. If these instructions describe more than one method of mounting then the method considered to be most unfavourable shall be chosen for each test.
5.1.4 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic reference standards for the test (e.g. the relevant part of IEC 60068).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits of ±5 % shall be applied.
5.1.5 Measurement of response time
The specimen for which the response time is to be measured shall be mounted in a heat tunnel as described in 5.1.3 and annex A. It shall be connected to suitable supply and monitoring equipment in accordance with 5.1.2. The orientation of the specimen, relative to the direction of airflow, shall be that which gave the maximum response time in the directional dependence test 5.2, unless otherwise specified.
Before the measurement, the temperature of the air stream and the specimen shall be stabilized to the temperature specified in the applicable test procedure. The measurement is then made by increasing the air temperature in the heat tunnel linearly with respect to time, at the rate of rise specified in the applicable test procedure until the supply and monitoring equipment indicates an alarm or until the upper limit of response time for the test is exceeded. During the measurement the air flow shall be maintained at a constant mass flow, equivalent to (0,8 ± 0,1) m s-1 at 25 °C, and the air temperature shall be controlled to within ±2 K of the nominal temperature required at any time during the test (see annex A). The response time is the time interval between the start of the temperature increase and the indication of an alarm from the supply and monitoring equipment.
5.1.6 Provision for tests
The following shall be provided for testing compliance with this standard:
5.1.7 Test schedule
Resettable specimens shall be arbitrarily numbered 1 to 15 by the testing organization and tested according to the test schedule in Table 2.
For detectors with provision for on-site adjustment of their class:
a) tests in accordance with 5.3, 5.4, 5.5, 5.6, 5.8, 6.1 and 6.2 shall be applied for each applicable class;
b) the test in accordance with 5.10 shall be applied for the class with the highest temperature rating;
c) all other tests shall be applied for at least one class.
Non-resettable specimens shall be arbitrarily numbered 1 to 62, 1 to 63, or 1 to 68 according to class by the testing organization and tested according to the test schedule in Table 3.
5.2.1 Object
To confirm that the response time of the detector is not unduly dependent on the direction of airflow around the detector.
5.2.2 Test procedure
The specimen(s) shall be tested as described in 5.1.5 at a rate of rise of air temperature of 10 K min-1. Eight such tests shall be made, the specimen being rotated about a vertical axis by 45° between successive tests so that tests are made with eight different orientations. Before each test, the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen. The response time at the eight orientations shall be recorded. The orientations at which the maximum and minimum response times were measured shall be noted.
5.3 Static response temperature
5.3.1 Object
To confirm the ability of a detector to respond correctly to a slow rate of rise of air temperature.
5.3.2 Test procedure
The specimens shall be tested as described in 5.1.5 at a rate of rise of air temperature of 1 K min-1 until the applicable maximum application temperature is reached as specified in Table 1 according to the class marked on the specimen. Thereafter the test shall be continued at a maximum rate of rise of air temperature of 0,2 K min-1. One specimen shall be tested at the orientation which gave the maximum response time, and the other at the orientation which gave the minimum response time in test 5.2. Before each test the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen. The temperature at which the specimens respond shall be recorded.
5.3.3 Requirements
The response temperatures of the detectors tested shall lie between the minimum and maximum static response temperatures, shown in Table 1, according to the class of the detector.
5.4 Response times from typical application temperature
5.4.1 Object
To confirm the ability of the detector stabilized at its typical application temperature to respond correctly over a range of rates of rise of air temperature.
5.4.2 Test Procedure
The specimens shall be tested as described in 5.1.5 at rates of rise of air temperature of 1, 3, 5, 10, 20 and 30 K min-1. One specimen shall be tested at the orientation which gave the maximum response time, and the other at the orientation which gave the minimum response time in test 5.2. Before each test the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen. The response time for each rate of rise of air temperature shall be recorded for each specimen.
5.4.3 Requirements
The response times of the detectors shall lie between the lower and upper response time limits specified in Table 4 for the appropriate detector class.
5.5.1 Object
To confirm that detectors in a class with a typical application temperature above 25 °C (see Table 1) do not exhibit an abnormally fast response to normal increases in temperature. Therefore this test is not applicable to class A1 or A2 detectors.
5.5.2 Test procedure
The specimen(s) shall be tested as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1. The specimen shall be tested at the orientation which gave the minimum response time in test 5.2. Before each test the specimen shall be stabilized to 25 °C. The response times of the specimen shall be recorded.
5.5.3 Requirements
The response time at 3 K min-1 shall exceed 7 min 13 s, and the response time at 20 K min-1 shall exceed 1 min 0 s.
5.6 Response times from high ambient temperature (dry heat operational)
5.6.1 Object
To demonstrate the ability of the detector to function correctly at high ambient temperatures appropriate to the anticipated service temperatures.
5.6.2 Test procedure
The specimen(s) shall be tested as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1. The specimen shall be tested at the orientation which gave the maximum response time in test 5.2. Before each test the specimen shall be stabilized for 2 h at the maximum application temperature specified in Table 1 according to the class marked on the specimen. The rate of rise of air temperature up to the stabilization temperature shall be < 1 K min-1. The response times of the specimen shall be recorded.
5.6.3 Requirements
No alarm or fault signal shall be given during the period that the temperature is increasing to the stabilization temperature or during the stabilization period.
Detectors shall respond, according to their class, between the lower and upper response time limits Object
To show that, within the specified range(s) of the supply parameters (e.g. voltage), the response time of the detector is not unduly dependent on these parameters.
5.7.1 Test procedure
The specimens shall be tested as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 at the upper and lower limits of the supply parameters (e.g. voltage) range specified by the manufacturer. One specimen shall be tested at the orientation which gave the maximum response time, and the other at the orientation which gave the minimum response time in test 5.2. Before each test the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen. The response times for both rates of rise of air temperature at each supply parameter limit shall be recorded.
NOTE: For conventional detectors the supply parameter is the dc voltage applied to the detector. For other types of detector (e.g. analogue addressable), signal levels and timing may need to be considered. If necessary, the manufacturer may be requested to provide suitable supply equipment to allow the supply parameters to be changed as required.
5.7.2 Requirements
The response times of the detectors shall lie between the lower and upper response time limits specified in Table 4 for the appropriate detector class.
5.8 Reproducibility
5.8.1 Object
To show that the response times of the detectors are within the required limits and, for resettable detectors, to establish response time base data for comparison with the response times measured after the environmental tests.
5.8.2 Test procedure
The response time of the specimens shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time as determined by test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.8.3 Requirements
The response times of the detectors shall lie between the lower and upper response time limits specified in Table 4 for the appropriate detector class.
5.9.1 Object
To demonstrate the ability of the detector to function correctly at low ambient temperatures appropriate to the anticipated service temperature.
5.9.2 Test procedure
5.9.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-1:1990+A1:1993+A2:1994 Test Ab, and as described below.
5.9.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.9.2.3 Conditioning
The following conditioning shall be applied:
Temperature: (-10 ± 3) °C. Duration: 16 h.
NOTE: Test Ab specifies rates of change of temperature of < 1 K min-1 for the transitions to and from the conditioning temperature.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.10 Dry heat (endurance)
5.10.1 Object
To demonstrate the ability of the detector to withstand a high ambient temperature appropriate to its class. This test is not applicable to class A1, A2 and B detectors.
5.10.2 Test Procedure
5.10.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-2:1974+Supp.A:1976 +A1:1993+A2:1994 Test Ba or Bb, and as indicated below.
5.10.2.2 State of the specimen(s) during conditioning
5.10.2.3 Final measurements
The response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.10.3 Requirements
No fault signal attributable to the endurance conditioning shall be given on reconnection of the specimen.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 1 min 0 s and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
a) .
5.11.2.2 Measurements during conditioning
The specimen(s) shall be monitored during the conditioning period to detect any alarm or fault signals.
5.11.2.3 Final measurements
After the recovery period the response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.11.1 Requirements
No alarm or fault signal shall be given during the conditioning.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.12 Damp heat, steady state (endurance)
5.12.1 Object
To demonstrate the ability of the detector to withstand the long-term effects of humidity in the service environment (e.g. changes in electrical properties of materials, chemical reactions involving moisture, galvanic corrosion etc.).
5.12.2 Test procedure
5.12.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-56:1988 Test Cb or IEC 60068-2-3:1969+A1:1984 Test Ca, and as described below.
5.12.2.2 Final measurements
After a recovery period of at least 1 h in standard laboratory conditions, the response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.12.3 Requirements
No fault signal attributable to the endurance conditioning shall be given on reconnection of the specimen.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
For non-resettable detectors, the response times shall lie between the lower and upper response time limits specified in Table 4 for the appropriate detector class.
5.13 Sulfur dioxide (SO2) corrosion (endurance)
5.13.1 Object
To demonstrate the ability of the detector to withstand the corrosive effects of sulfur dioxide as an atmospheric pollutant.
5.13.2 Test procedure
5.13.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-42:1982 Test Kc, except that the conditioning shall be as described below.
5.13.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be mounted as described in 5.1.3. It shall not be supplied with power during the conditioning, but it shall have untinned copper wires, of the appropriate diameter, connected to sufficient terminals, to allow the final measurement to be made without making further connections to Final measurements
Immediately after the conditioning, the specimen(s) shall be subjected to a drying period of 16 h at (40 ± 2)°C, < 50% RH, followed by a recovery period of at least 1 h at the standard laboratory conditions. After this the response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.13.3 Requirements
No fault signal attributable to the endurance conditioning shall be given on reconnection of the specimen.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.14.1 Object
To demonstrate the immunity of the detector to mechanical shocks, which are likely to occur, albeit infrequently, in the anticipated service environment.
5.14.2 Test procedure
5.14.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-27:1987 Test Ea, except that the conditioning shall be as described below.
5.14.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be mounted as described in 5.1.3 to a rigid fixture, and shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.14.2.3 Conditioning
5.14.2.4 Measurements during conditioning
The specimen(s) shall be monitored during the conditioning period and for a further 2 min to detect any alarm or fault signals.
5.14.2.5 Final measurements
The response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.14.3 Requirements
No alarm or fault signal shall be given during the conditioning period or the additional 2 min.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.15.1 Object
To demonstrate the immunity of the detector to mechanical impacts upon its surface, which it may sustain in the normal service environment and which it can reasonably be expected to withstand.
5.15.2 Test procedure
5.15.2.1 Apparatus
The test apparatus shall consist of a swinging hammer incorporating a rectangular section aluminium alloy head (aluminium alloy Al Cu4 Si Mg complying with ISO 209-1:1989, solution treated and precipitation treated condition) with the plane impact face chamfered to an angle of 60° to the horizontal when in the striking position (i.e. when the hammer shaft is vertical). The hammer head shall be (50 ± 2,5) mm high, (76 ± 3,8) mm wide and (80 ± 4) mm long at mid height, as shown in Figure D.1. A suitable apparatus is described in annex D.
5.15.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be rigidly mounted to the apparatus by its normal mounting means and shall be positioned so that it is struck by the upper half of the impact face when the hammer is in the vertical position (i.e. when the hammer head is moving horizontally). The azimuthal direction and position of impact relative to the specimen shall be chosen as that most likely to impair the normal functioning of the specimen. The specimen(s) shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.15.2.3 Measurements during conditioning
The specimen(s) shall be monitored during the conditioning period and for a further 2 min to detect any alarm or fault signals.
5.15.2.4 Final measurements
The response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.15.3 Requirements
No alarm or fault signal shall be given during the conditioning period or the additional 2 min.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.16.2 Test procedure
5.16.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-6:1995+Corr:1995 Test Fc, and as described below.
5.16.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be mounted on a rigid fixture as described in 5.1.3 and shall be connected to its supply and monitoring equipment as described in 5.1.2. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is perpendicular to its normal mounting plane.
5.16.2.3 Conditioning
The following conditioning shall be applied:
(10 to 150) Hz. 5 m s-2 (« 0,5 gn). 3.
1 octave min-1. 1 per axis.
Frequency range: Acceleration amplitude: Number of axes: Sweep rate:
Number of sweep cycles:

NOTE: The vibration operational and endurance tests may be combined such that the specimen is subjected to the operational test conditioning followed by the endurance test conditioning in one axis before changing to the next axis. Only one final measurement need be made.
5.16.2.4 Measurements during conditioning
The specimen(s) shall be monitored during the conditioning period to detect any alarm or fault signals.
5.16.2.5 Final measurements
The final measurements specified in 5.17.2.4 are normally made after the vibration endurance test and only need be made here if the operational test is conducted in isolation.
5.16.3 Requirements
No alarm or fault signal shall be given during the conditioning.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
5.17 Vibration, sinusoidal (endurance) 5.17.1 Object
To demonstrate the ability of the detector to withstand the long-term effects of vibration at levels appropriate to the service environment.
5.17.2 Test procedure 5.17.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-6:1995+Corr:1995 Test Fc, and as described below.
5.17.2.2 State of the specimen(s) during conditioning
The specimen(s) shall be mounted on a rigid fixture as described in 5.1.3, but shall not be supplied with power during conditioning. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is
Frequency range: Acceleration amplitude: Number of axes: Sweep rate:
Number of sweep cycles:

NOTE: The vibration operational and endurance tests may be combined such that the specimen is subjected to the operational test conditioning followed by the endurance test conditioning in one axis before changing to the next axis. Only one final measurement need be made.
5.17.2.4 Final measurements
The response time of the specimen(s) shall be measured as described in 5.1.5 at rates of rise of air temperature of 3 K min-1 and 20 K min-1 in the orientation which gave the maximum response time in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.
5.17.3 Requirements
No fault signal attributable to the endurance conditioning shall be given on reconnection of the specimen.
For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 s.
in test 5.2. Before each measurement the specimen shall be stabilized to the typical application temperature specified in Table 1 according to the class marked on the specimen.For resettable detectors the response time at 3 K min-1 shall not be less than 7 min 13 s and any change in the response time compared with the time obtained in the equivalent test 5.8 shall not exceed 2 min 40 s.
For resettable detectors the response time at 20 K min-1 shall not be less than 30 s for class A1 detectors, 1 min 0 s for all other classes, and any change in response time compared with the time obtained in the equivalent test 5.8 shall not exceed 30 sFor non-resettable detectors, the response times shall lie between the lower and upper response time limits specified in Table 4 for the appropriate detector class.
6 Additional tests for detectors with class suffixes 6.1 Test for suffix S detectorsTo confirm that a suffix S detector does not respond below the minimum static response temperature applicable to the class of the detector. This test is only applicable to suffix S detectors.
NOTE: Suffix S detectors may be particularly suitable for use in applications, such as boiler rooms and kitchens, where high rates of temperature rise may be sustained for long periods.
6.1.1 Test procedure 6.1.2.1 Plunge test
The specimen shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
The specimen shall be stabilized to the conditioning temperature specified in Table 7 according to the class marked on the specimen. At the end of the conditioning period the specimen shall be transferred, in a period not exceeding 10 s, into an airflow of 0,8 m s-1 (mass equivalent at 25 °C) maintained at the temperature specified in Table 7. The specimen shall be tested in the orientation which gave the minimum response time as determined by the test in 5.2. The specimen shall be exposed to the airflow for at least 10 min. Any response from the specimen during this time or during the transfer period shall be noted.

EN 54-5 Fire detection and fire alarm systems — Part 5: Heat detectors — Point detectors

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