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If the equipment is intended for direct connection to an AC MAINS SUPPLY, the tolerances on9 x+ r0 \1 @; Z0 F) U; A5 A, d
RATED VOLTAGE shall be taken as +6 % and –10 %, unless:
# w0 X9 X8 K8 y4 |" I* E. x! D− the RATED VOLTAGE is 230 V single-phase or 400 V three-phase, in which case the2 k4 R2 K, S1 ?3 D' W( ~
tolerance shall be taken as +10 % and –10 %; or
8 ~# n' W! }: q& p− a wider tolerance is declared by the manufacturer, in which case the tolerance shall be1 S0 n7 |/ e1 F
taken as this wider value.
6 F0 l: K" U( D: C( pIf the equipment is intended only for connection to an a.c. mains equivalent source, such as a
; V/ S. g/ M/ Y# F& \motor-driven generator or an uninterruptible power supply (see 1.2.8.1), or a source other$ _9 h% H N! M0 M$ B1 P! @
than a MAINS SUPPLY, the tolerances on RATED VOLTAGE shall be declared by the manufacturer.3 m9 v( H) ~ ^; q) K4 N! ]
If equipment is intended for connection to a DC MAINS SUPPLY, the tolerance shall be taken as, F- E6 X' A# T/ F- }' f6 G
+20 % and –15 %, unless declared otherwise by the manufacturer |
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