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|  DSH 591/06, a2 J: _; c) m) w
* F- H. Z* [) i' X" n | Short circuit and overload protection1 R" B) ~" a' b9 H7 P8 |. t7 ~, w
| 15.3.2
7 O4 x+ b Y' P- Z$ \ | 61558-1(ed.1);am16 ^! Z& u3 y5 T
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Standard: IEC 61558-1/1997
' s5 S9 B, s3 Q. Y/ h0 ^A1/1998
2 d9 k7 a* t% F4 X$ h2 n: LSub clause: 15.3.2' f5 Y/ R+ l |5 l' t( l
Sheet N°: 591/06
: _2 }" l7 f: x$ |1 qPage: 1 (1)
" i7 d' F! \! p: G% w- MSubject: Short circuit and overload' ?) y, ~8 o) @6 W9 A
protection
* R6 A- {# p- v* x+ F% lKey words:
1 ? {; G4 k5 l- Fuse current% V+ ]6 j/ d8 k( A4 v8 S7 w
- Overloading test; z! ?0 z9 E4 U. X: p
- Overload current
T; r) b( K) z/ E0 \Meeting:7 k' V2 z/ r; g" J
Decision confirmed
2 x, V% Z% O/ `$ e Aat 44th CTL meeting
( j5 _- R) m5 K$ pQuestion: During the overloading test on the transformer according to § 15.3.2 the
n, j7 o! H7 W5 E' C9 p4 d$ Ztemperature of the windings and their resistance increase and consequently the3 o# ~: }$ N! U3 v2 w8 k: D
overload current decreases. Has the fuse current be readjusted to the original+ C4 ^& f4 c' f& Y
overload current during the test or no adjustment has to be made?# D9 u, L& N8 e \5 Z3 X
Decision: The fuse current has to be kept constant during the test.
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7 q! p6 Z, `3 E& z
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