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标题: DSH 591/06 Short circuit and overload protection [打印本页]
作者: 小米    时间: 2012-11-8 15:07
标题: DSH 591/06 Short circuit and overload protection
DSH 591/06& J5 a) F: t6 w8 m% i/ h
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Short circuit and overload protection' A* |. k0 F% o! j# ~6 o  t% L
15.3.25 F9 g$ Z) y1 E& ?. n) o2 I. c
61558-1(ed.1);am1
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Standard: IEC 61558-1/1997
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Sub clause: 15.3.2, X2 ?$ @$ }  t" v7 l( N
Sheet N°: 591/06
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Subject: Short circuit and overload. ?1 n' K  ^2 w- _8 a
protection' @; e3 o+ P3 @: {5 m, r7 s' v- h
Key words:8 ~8 `7 v) v; v* Q+ \. ~" j$ B
- Fuse current/ |& p6 ]) l# _
- Overloading test# g. b8 d9 E+ l$ l$ i9 n
- Overload current9 S( ~/ {4 y. P4 d' j3 n4 T: ?. h& L
Meeting:
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at 44th CTL meeting
. |5 q& s. D8 ?9 I2 w& n% KQuestion: During the overloading test on the transformer according to § 15.3.2 the6 v: W* l7 b5 o' }1 G2 P2 A  c
temperature of the windings and their resistance increase and consequently the
6 D# x3 c! r& \, _# toverload current decreases. Has the fuse current be readjusted to the original0 Z2 ?" l; U  Q! }9 q& X! @+ |! m. Y3 g
overload current during the test or no adjustment has to be made?
: p4 ^! K, _' S) LDecision: The fuse current has to be kept constant during the test.
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