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# ~! f8 h* Y& J/ f2 Q+ w2 G
2 B. `% F" y5 t" `' H: H
| Measuring Circuit Terminals (Amd 2)
& s5 _# g, ?. ?# p | 5.1.5; ~$ I- v) ?$ M* j
| 61010-1(ed.1);am1;am2, R2 F% } P4 c9 {# y6 o
|
: }1 Z% Z& ?/ e# |. b$ @( H/ m
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Standard:
/ s; j4 ~# a ]- G! P! P7 CIEC 61010-1:1990- |, q1 E: z( u7 q
+A1:1992+A2:19954 Z1 q; y2 O$ _( s
Sub clause:9 `8 q2 `/ g9 a2 R3 }
5.1.5) p( w9 J9 Q% C6 P4 ?6 l
Sheet n. 297
B$ O8 A. [( H' xPage 1(1)
0 k$ `& S5 R$ `2 v3 USubject:
1 |" r- V4 f$ o% N* H4 jMeasuring Circuit Terminals: H$ L0 }% U8 b# q, t: a
(Amd. 2)7 s( v$ R- {- B
Key words:6 R6 Y% n4 v: B1 a0 U( W3 R; g
Terminals a" `6 f' v @: T n0 B
Marking
; V2 t: }* E P5 f2 D2 ADecision taken by
9 E" H: {9 q$ j! C# _7 W! NETF3 and confirmed* e# W* G% `2 I3 B8 j+ X
by CTL at its 38th
5 B( E( O9 V- [3 Umeeting, in Toronto
$ P; `6 S' V5 t. k: S2 t* AQuestion:
! m% _6 M/ d3 ~) Z, NIs it acceptable for a measuring equipment to have its sensing terminals marked:5 \% D4 P7 p$ Z2 P9 r8 h
“CAT II (600V)
- \3 n; h! i2 h$ U! D4 iCAT III (300V)”
% Y" D4 p- _0 Z4 F* x- ~- DDecision:
/ d8 t0 m& }6 \0 v6 M+ X2 c' ^Marking with both categories with the relevant voltages as shown is acceptable.: s* V8 j* e. [ M/ u0 T: ^
Explanation:
7 C; n9 o" S' c" H4 ]- V' |The standard allows operation under different categories provided the isolation is suitable for' T2 Q/ C+ I/ Z3 E. [9 V# G
the voltages concerned. In this case, it is possible to mark both categories since the/ h0 j5 p/ k- r) h- R
requirements for Cat II at 600V are the same as those for Cat III at 300V.& d9 s! t; r9 i3 O+ ~+ h0 m, \
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7 a8 S' ]; R* U1 A3 Y1 Z3 L
4 B8 e7 `) j4 c5 h$ X |
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