IS 10098 (1982): General requirements for electric infra ... · ELECTRIC INFRA-RED EMITTERS FOR...
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IS 10098 (1982): General requirements for electricinfra-red emitters for heating purposes [ETD 17: IndustrialElectroheating Equipment]
IS : 10098 - 1982
Indian Standard GENERAL REQUIREMENTS FOR
ELECTRIC INFRA-RED EMITTERS FOR HEATING PURPOSES
Industrial Electra-heating Equipment Sectional Committee, ETDC 61
Representing
Tata Iron and Steel Co Ltd, Jamshcdpur
SHRI A. K. BISWAS ( Alternate to Shri S. K. Mazumder )
Snr:~ G. A. ADUNI Westerwork Projects Ltd, Bombay SHRI L. C. C~asnr ( Alternate )
SHRI S. N. AGARWAI, Steel Furnace Association of India, New Delhi SHRI S. K. BHaTTao~.41w M. N. Dastur & Company (P) Ltd, Calcutta
SHRI T. K. GHOSII ( Alternate ) SHRI R. M. CK4NDWANI Hindustan Prawn Boveri Ltd, Vadodara
SHRI P. S. SHAHX_I ( Alternate ) SHRI K \CSIISL GAEL Engineering Projects ( India ) Ltd, New Delhi
SRRI M. M. PRAS~D ( AhermIts) S~rtr S. S. HUBLI Kirloskar Electric Co Pvt Ltd ( Unit IV ), Mysore
SHRI S. S. HEMACHANDER ( Alternate ) SHRI A. K. J.41~ Graphite India Ltd, Calcutta
SHR~ J. K. AGAI~WAL ( Alternate ) SIII<I G. L. KESWANI Directorate General of Technical Development,
New Delhi SIIP.I A. K. KI~s.\vAL~~ ( Alternate )
SHRI 0. N. KRISHN~N Metallurgical & Engineering Consultants ( India ) Ltd, Ranchi
SHRI J. c. MAnAN Steel Authority of India Ltd, New Delhi SHRI A. K. JAIN ( Alternate )
SHRI P. K. ML-RHOPADHYAY Heavy Machine Building Plant, Heavy Engineering Corporation, Ranchi
SHRI M. K. N.IIR Directorate General of Ordnance Factories ( Ministry of Defence ), Calcutta
SARI P. A. PITXL Indian Furnace Company Ltd, Bombay SHRI M. PURANDHAR ( ~bmte )
SHRI V. R. K. N. SASTRI Mishra Dhatu Nigam Ltd, Hyderabad SHRI N. R.~GR.\VAN ( Alternate )
( Contiwed on page 2 )
@ Cobysight 1982 INDIAN STANDARDS INSTITU1‘ION
This publication is protected under the Indian Cof#ght Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.
( Continued from page 1 )
Members Representing
SHRI S. V. KRISHNA RAO Bharat Heavy Electricals Ltd, Secunderabad SRRI B. PATHIILAJ ( A1ttmaate )
SHRI M. SHANKRALINGAM Directorate General of Supplies & Disposals, New Delhi
SHRI R. V. NARAYANAN ( Alternate ) SHRI Y. P. VATSA The General Electric Co of India Ltd, Calcutta
SHRI S. M. BANERJEE ( Alternate ) SHRI S. P. SACHDEV, Director General, IS1 ( Ex-o$icio Member )
Director ( Elec tech )
Secretary
SHRI JOSE MATHEW Assistant Director ( Elec tech ), IS1
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Indian Standard GENERAL REQUIREMENTS
IS : 10098 - 1982
FOR ELECTRIC INFRA-RED EMITTERS FOR
HEATING PURPOSES
0. FOREWORD
0.1 This Indian Standard was adopted by the Indian Standards Institution on 20 January 1982, after the draft finalized by the Industrial Electra-heating Equipment Sectional Committee had been approved by the Electrotechnical Division Council.
0.2 This standard covers the basic requirements for reflector and tubular quartz electric infra-red emitters used for industrial heating purposes.
0.3 In preparing this standard, assistance has been derived from IEC Pub 240 ( 1967 ) ‘ Ch aracteristics of electric infra-red emitters for heat- ing purposes ’ issued by International Electrotechnical Commission.
0.4 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*, The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
1. SCOPE
1.1 This standard specifies the general requirements for reflector and tubular quartz electric infra-red emitters used for industrial heating purposes.
2. TERMINOLOGY
2.0 For the purpose of this standard, the following definitions shall
apply.
*Rules for rounding off numerical values ( revised ).
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IS : 10098 - 1982
2.1 Infra-Red Emitter - An emitter which radiates especially strongly in the infra-red and for which the light production is not of direct interest.
2.2 Reflector Emitter - An infra-red emitter in which part of the bulb is shaped and metallized so as to concentrate radiation.
2.3 Tubular Quartz Emitter - An infra-red emitter with a quartz tube and with a straight-line filament held parallel to the axis of the tube.
2.4 Rated Power - Rated power marked on the emitter.
2.5 Rated Voltage - The voltage marked on the emitter.
2.6 Design Voltage - The voltage at which the rated characteristics are obtained.
2.7 Maximum Permissible Cap and Bulb Temperature - Tempe- rature on cap and bulb of the infra-red emitter which should not be exceeded when operated under any service condition.
3. MARKING
3.1 The following information shall be marked on the emitter:
a) Manufacturer’s name or trade-mark;
b) Rated power;
c) Rated voltage or rated voltage range; and
d) IR ( infra-red ), for reflector type only.
3.2 The maximum cap and bulb temperatures should be quoted in the manufacturer’s catalogue. If marking on the emitter is required, it should be IRl for low-temperature service, and IR2 for high-temperature service.
4. DIMENSIONS
4.1 The dimensions of reflector emitters are shown in Fig. 1.
4.2 The dimensions of tubular quartz emitters are shown in Fig. 2.
5. EMITTER CHARACTERISTICS
5.1 The characteristics of reflector emitters shall be as given in Table 1.
5.2 The characteristics of tubular quartz emitters shall be as given in Table 2.
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IS : 10098 - 1982
FIG. 1 REFLECTOR EMITTER
W:Til METAL STRIP CONNECTION
L2
WITH CAELE CONNECTION
FIG. 2 TUBULAR QUARTZ EMITTER
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IS : 10098 - 1982
TABLE 1 REFLECTOR EMITTERS
( czuuse 5.1 )
(1)
Rated power
Design voltage
Rated voltage
UNITS
(2)
w
V
V
Cap ( Lamp caps and holders together with gaugrs for the control of interchangeability and safety )
Maximum neck diameter D,
Maximum bulb diameter D,
Maximum overall length L,
DisF;;uibo; centre contact of cap to greatest diameter 1
mm
mm
mm
mm
Maximum allowed cap 7
temperature s
Maximum allowed bulb 1 temperature
:
Low-temperature service
High-temperature service
Low-temperature service
High-temperature service
“C
“C
‘C
“C
VALUES
(3)
250 or 375
240
240 or 230 to 250
E 27130 E 27127
42
130
195
148 f 10,
250
275
250
420
NOTT: 1 - Distribution of radiation shall be as specified by the manufacturer.
NOTE 2 - It is intended to standardize E 27/30 cap only, in future.
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IS : 10998 - 1982
TABLE 2 TUBULAR QUARTZ EMITTERS
CHARACTERISTICS
( Clause 5.2 )
UNITS VaLUES
(1) Rated power
Type of connection
Design voltage
Rated voltage range
Maximum bulb diameter D,
Width of slots D,
Maximum diameter of holder pins
1 For metal ’ strip
4 ( see Fig. 2 ) > connection
1 For cable
V
V
mm
mm
mm
? mm J
J COnneCtIOn > mm
Maximum width of connec- mm tion strip D,
Maximum allowed seal ‘C temperature in the fitting
(2)
W
(3)
500
Metal strip or cable
240
230 to 250
12
5 f 0.5
45 -
243
227 max
15
300
(4)
1000
kk;;l$r$
240
230 to 250
12
5 f 0.5
45
368
367 max
15
300
(5)
2000
Metal strip or cable
240
230 to 250
12
5 f 0.5
45
508
492 max
15
300
NOTE 1 -The cap designation and the length of the filament Lr shall be as specified by the manufacturer.
NOTE 2 - Dimensions L, for metal strip connection are given for guidance to the oven manufacturer in order to set the locating pins at the correct distance. The requirement for lamps is that they can be mounted on pins set at a nominal dimen- sions Lp. The tolerance on the distance between the locating pins (Ls) should not exceed f 05 mm. The holders should be floating over 1 mm minimum to allow for the difference in expansion between the quartz lamp and the material of the oven structure.
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INTERNATIONAL SYSTEM OF UNITS ( SI UNITS)
Base units
QUANTITY
Length
Mass
Time
Electric current
Thermodynamic temperature
Luminous intensity
Amount of substance
Supplementary Unit9
QUANTITY
Plane angle
Solid angle
Derived Unite
UNIT SYMBOL
metre m
kilogram kg second
ampere
kelvin
candela
mole
UNIT
radian
steradian
s
A
K
cd
mol
SYMBOL
rad
<r
QUANTITY UNIT SYMBOL
Force
Energy
Power
Flux
Flux density
Frequency
Electric conductance
Electromotive force
Pressure, stress
newton
joule
watt
weber
tesla
hertz
volt Pascal
N .J W
Wb
T
HZ
S
V
Pa
DEFINITION
I N 0 1 kg.m/s
1 J - 1 N.m
1 W-lJ/s
IWb- 1V.s
1 T = 1 Wb/m’
1 Hz 0 1 c/s (s-1)
1 s = 1 A/V
1 v - 1 W/A
1 Pa = 1 N/m’