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1 S( F$ B. L6 J" s1 |, H) Q2 ? | Mains Transformers Overload test
/ y; d+ q, |) T$ \ | 14.7.2
}) q8 U0 B+ ^; F+ P j | 61010-1(ed.1);am1;am2
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; S' D1 Q- r$ l# |' u0 Z& c; EStandard:
2 e7 }2 G' v( C2 ?3 [& aIEC 61010-
) r0 |- g9 A5 c& ?1:1990+A1:1992+A”:19952 t( N% K0 @. M) Q
Sub clause:' U, X! M% q+ ]/ J
14.7.21 A# u0 s. [" B& r$ a
Sheet n. 316" O. U/ Y6 P5 }& z" c) y
Page 1(1)' v* D, W8 U: g+ d: ]$ h7 W
Subject:2 _; ^* }2 S2 A9 U @& C) m; |# B
Mains transformers
+ p1 J7 m) X, i) J4 E8 P; o" l/ vOverload test4 _% L4 O! |, x( k! c3 m: |. n
Key words:
( v! e4 ]0 H( |4 k3 O- Transformer- G. L: S9 S3 L7 N
- Overload
+ @$ l; o: Y" N- Temperature
! j: h9 |& Z% l# ODecision taken by" e6 R1 C5 i$ R
ETF3 and confirmed
. \9 W, l% G( K5 S9 A7 L2 @0 l3 j- uby CTL at its 38th3 ?' N+ I6 {% b8 \3 p
meeting, in Toronto' X. z' t$ K7 B% N1 V
Question:$ |! ?5 ~ i* q& N1 p0 z- n
Should this test be performed starting from cold condition or from operating temperature?% k1 i J, d k" l5 g- S
Decision:
$ Y( z+ G; _" `9 \, ?& k! ETests from both temperatures are valid and should therefore, be performed if there is- P% p J( t, X) S
likelihood that limits will be exceeded.
+ ~3 B' n6 @ \2 iExplanation! Y c% D$ o' b- s
All working temperatures are addressed by this requirement. Laboratories should analyse the) D" g8 W: c5 O. }1 W
operation of the device to determine whether more than one test is needed./ f& P5 ^# E" o& p' T, Z
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发表于 2012-9-19 14:36
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