If the power brick is only intended for removal by a qualified service
Engineer, the marking need only be applied to the external rear panel
visible to the user - based on my experience of having units qualified to EN
60065.
Chris
-Original Message-
From: Davis, Mike
Mike,
Page 22 of our company copy of EN 61010-1:1993 refers to:
very fast = FF or black
fast = F or red
medium, time-lag = M or yellow
time-lag = T or blue
long time-lag = TT or grey
There is a reference to these code/color designations coming from IEC 127.
There are some other trade fuse
The IEC standard is IEC127 which has requirements for Very Fast, Fast, Delay,
Long Delay and M (Medium?) along with breaking current capacity codes.
Davis, Mike mike_da...@adc.com on 01/25/2001 11:08:33 AM
Please respond to Davis, Mike mike_da...@adc.com
To: EMC-PSTC Regulatory E-Mail
Mike,
Fuse-holders shall be marked with the symbol relative to the time/current
characteristic (F or T), the rated current (mA or A), and the rated voltage
(V) of the fuse.
Examples: F250mA 250V (fast acting)
T3A 250V (slow blow)
John Radomski
Product Compliance Engineer
EN 60127-1 1991 Clause 6.1d
FF: denoting very quick acting
F: denoting quick acting
M: denoting medium time-lag
T: denoting time-lag
TT: denoting long time-lag
Chris James
Engineering Services Manager
Dolby Laboratories Inc
Wootton Bassett
Wiltshire
SN4 8QJ
tel: 01793
Mike,
The following is from clause 5.1.4 of IEC 1010-1 which is for equipment for
measurement, control, and laboratory use. NOTE: IEC 127 is the standard that
International fuses are tested against. Apparently you can use letter or
color codes.
The letter and color codes of IEC 127 are as
Mike
I certify products to IEC60065 and UL6500. These standards require the use
of F for fast breaking fuses and T for time lag. Eg F1.6A/250V or
T1.6A/250V.
Chris Colgan
Compliance Engineer
TAG McLaren Audio Ltd
The Summit, Latham Road
Huntingdon, Cambs, PE29 6ZU
*Tel: +44 (0)1480 415 627
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