इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान का अधकार, जी का अधकार” “परा को छोड न 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 302-2-204 (1994): Safety of household and similar electrical appliances, Part 2: Particular requirements: Section 204 Electric water boilers [ETD 32: Electrical Appliances] “ान $ एक न भारत का नमण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “ान एक ऐसा खजाना > जो कभी चराया नह जा सकताह ै”ै Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 302-2-204 : 1994 SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES PART 2 PARTICULAR REQUIREMENTS Section 204 Electric Water Boilers UDC 641’542’1 - 83 : 614’825 0 BIS 1994 BUREAU OF INDIAN STANDARDS / Price Group 4 Electrical Appliances Sectional Committee, ETD 32 FOREWORD This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Electrical Appliances Sectional Committee had been approved by the Electrotechnical Division Council. This standard covers the general and safety requirements for Electric Water Boilers to ensure personal safety against electric shock, effect of excessive temperature and fire, etc. For the sake of convenience of reference the format of the standard has been followed with the pattern followed in IS 302-I ( 1979 ) ‘Safety of household and similar electrical appliances : Part 1 General requirements (fifth revision )‘. The performance requirements and the detail list of performance characteristics along with the methods for evaluation of these characteristics are covered in a separate standard IS 3412 : I993 ‘Specification for electric water boilers ( second revision )‘. This standard is to be read in conjunction with IS 302-l ( 1979 ). For the sake of convenience, where the clause of this standard corresponds to that of IS 302-I ( 1979 ), instead of reproducing full text of each clause of IS 302-I ( 1979 ) which are applicable ( which means that relevant provision of the clause applies ) or not applicable and the sub-clauses or portion thereof which are not applicable are indicated as under: a) In case of a clause where it is applicable or not applicable, the wording used is ‘This clause of IS 302-l ( 1979 ) is applicable/not applicable’. b) In case of a sub-clause or part thereof ‘Not applicable’.- Wherever a sub-clause of IS 302-I ( 1979 ) is to be replaced by a new text, it has been indicated as under: Replacement - Followed by the new text. Any addition to the existing provision of sub-clause of IS 302- 1 ( 1979 ) has been indicated as under: Addition - Followed by the text of additional clause. Clauses/Tables which are additional to those of IS 302-l ( 1979 ) are numbered starting from 101 and additional sub-clauses are numbered with the main clause number followed by 101, 102, 103, etc, for example 2.101 should however any deviations exist between IS 302-l ( 1979 ) and this standard, the provision of latter shall apply. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 302-2-204 : 1994 Indian Standard SAFETY OF HOUSEHOLD AND SIMILAR L ELECTRICAL APPLIANCES PART 2 PARTICULAR REQUIREMENTS Section 204 Electric Water Boilers 1 SCOPE 2.103 Immersion Heating Element - A totally enclosed heating element the heating portion of which 1.1 Replacement is immersed in water. This standard covers the general and safety 2.184 Rated Water Capacity -The quantity of water requirements for electric water boilers of rated loading which the water boiler is designed to hold and which not exceeding 5.0 kW and connection to supplies of is marked on the rating plate. voltages not exceeding 250 V ac single phase 50 Hz or dc. 2.105 Fixed Water Boiler - It denotes an appliance for permanent connection to the water supply mains, 1.2 Replacement which if filled through a valve in the inlet pipe and This standard does not apply to : is open to the atmosphere, so that under no conditions of use can the pressure at the surface of the water be a) Appliances intended to be used in locations other than atmospheric. where special conditions pervail, such as the presence of a corrosive or explosive atmosphere 3 GENERAL REQUIREMENTS (dust, vapour or gas); This clause of IS 302-l(1979) is applicable except as b) Appliances for high-frequency heating; follows : 4 Appliances of the electrode type; 3.1 Para 3 Replacement 4 Storage water heaters, which are covered by a separate standard; In general, compliance is checked by carrying out the relevant tests specified. e>Instantaneous water heaters, which are covered by separate standard; 4 GENERAL NOTES ON TESTS f) With rated capacity not exceeding 10 1 are covered under a separate Indian Standard. This clause of IS 302-l(1979) is applicable except as follows : 2 TERMINOLOGY 4.2 Note 3 and Note 4 not applicable. This clause of IS 302-l(1979) is applicable except as Addition follows : For water boilers intended to be immersed in water 2.9, 2.11, 2.25 and 2.28 not applicable. for cleaning, two additional samples are required for tests of sub-clause 15.101. 2.29 Replacement 4.8, 4.10 and 4.13 Not applicable. Conditions of Adequate Heat Discharge - Water boilers are operated filled with a quantity of initially Additional Sub-clause cold water equal to its rated capacity and with the lid, where provided, closed. 4.101 The appliances are tested as portable appliances, unless it is clear from their design and the 2.38, 2.31, 2.33, 2.34 and 2.46 not applicable. manufacturer’s instructions that they are intended to be fixed to a supporting surface. Additional Sub-clauses 5 RATING 2.101 Electric Water Boiler-An electrically heated vessel with free outlet for the steam, intended for This clause of IS 302-l(1979) is applicable except as boiling water for bathing, washing fabrics, preparing follows. beverages, etc. 5.1 Replacement 2.102 Clamp-on Heating Element-A heating element clamped or similarly attached to the outer surface of The rated voltage shall not exceed 250 V. The preferred the water container. rated voltage is 240 V. 1 IS 302-2-204 : 1994 5.2 Rated Input This appliance must only be used with the appropriate connector. The rated input of water boilers shall not exceed 5.0 kW. 7.3, 7.4 and 7.8 Not applicable. 5.2.1 Recommended input for various capacities of 7.12 Addition water boilers ( see 5.161 ) are as follows : The instruction sheet should state that the appliance should be cleaned by pouring water in the imter Rated Capacity Recommended Input container. litres kilowatt Additional Sub-clause 15 1.5 20 7.101 The water boilers may also be marked with 25 ;:: the Standard Mark. 30 2.5 35 3.0 8 PROTECTION AGAINST ELECTRIC SHOCK 40 3.0 50 3.0 This clause of IS 302-l(1979) is applicable except as follows : 5.2.2 and 5.2.3 not applicable 8.2, 8.3 and 8.8 not applicable. Additional Sub-clause 9 STARTING OF MOTOR-OPERATED APPLIANCE 5.101 Rated Capacity The rated capacity for water boilers shall be one of This clause of IS 302-l(1979) is not applicable. the following : 10 INPUT AND CURRENT 15, 20, 25, 30, 35, 40 and 50 litres. This clause of IS 302-l(1979) is applicable except as follows : 6 CLASSIFICATION 10.2 Not applicable. This clause of IS 302-l(1979) is applicable except as follows : 11 TEMPERATURE RISE 6.1 (a) (2) and (3), and 6.1 (b) (4) Not applicable. This clause of 1$302-l(1979) is applicable except as follows : Addition 11.2 Para 3 (a) Replacement NOTE - This standard recognises appliances which are intended IO be cleaned by pouring water in the inner container Water boilers provided with a temperature limiter and but it does not recognize water tight appliances. normally used on a floor or a table are placed on the floor of the test corner at a distance of about 15 cm 7 MARKING from the walls of the test corner. This clause of IS 302-l(1979) is applicable except as NOTE - This distance includes the natural projection such as follows. hooks, bolts, appliance inlets, etc, of the appliances. 7.1 Replacement Para 4 Not applicable. The water boilers shall be marked with the following 11.3 Para 6 Not applicable. information: 11.5 and 11.6 Not applicable. a) Rated voltage in volts, 11.7 Replacement b) Rated input in watts or kilowatts, c) Rated capacity, Water boiler shall be tested for 15 minutes after the water in the container has attained a temperature of d) Name of the manufacturer or his trade-mark, 95°C or if this temperature cannot be attained, after e) Maker’s model or type reference, and water has attained its maximum temperature.