DSH 308 Table 3- Temperature limits

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DSH 308 , W& Q/ B1 ?8 g- F7 n. _+ }% b

Table 3- Temperature limits

9

61010-1(ed.1);am1;am2 , H$ Z- x, Y- i( S6 X- w

' V% L* g5 l: |( E- ?7 @9 LStandard:
IEC 61010-
1:1990+A1:1992+A2:1995
Sub clause:
4 U4 z3 z6 p8 A% V  l9
/ L& N% l3 K3 X) C0 ]- b* F/ k- |Sheet n. 308
Page 1(1)
4 M# S! ~3 o0 n3 JSubject:
Table 3 - Temperature limits
Key words:
- Fire point
/ V" E' E6 ?" g6 e- Temperature
) b0 I7 N/ {, _0 m. C, BDecision taken by
ETF3 and confirmed
by CTL at its 38th
; n( C2 C8 ?: F7 q% C* [$ l6 v/ ?  Pmeeting, in Toronto
8 m- _! k; [6 A! ]( m# ?( }Question:
How can the requirements of this clause be used for parts in contact with liquids. Where can
$ J' j3 t/ H$ R2 ]) D/ c1 N/ q' ?the figures for Fire Point be obtained?
! s- q  ]3 X0 {; PDecision and Explanation
9 e2 Q! d( Y' s+ qThis requirement should only be applied where a hazard may arise.
Figures for fire point are available in ANSI/NFPA 497-1997, published by the National Fire
0 g" U" P6 l1 J, Z. Z/ L* [8 rProtection Association, Quincy, Massachusetts, USA.
Table 2-1 of NFPA 497 identifies flash points, autoignition temperatures
(fire points), lower and upper flammable limits (in %), vapor densities,
- t% M/ k* v0 l+ I5 jvapor pressures, minimum ignition energies, minimum ignition current ratios,
0 u$ R. N& ^# p. [4 l: i2 E7 }" Cand maximum experimental safe gaps of approximately 225 common liquids and
gases.

$ d' D! ]" ?9 }: z/ |
7 A& Q) l, q' `: z# Q9 {
+ n" B8 ?. Z2 o0 j, g