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Standards

HV fuses standard: IEC 60282-1 German standards
High-voltage fuses – Part 1: current-limiting fuses Two important standards
This part of IEC 60282 applies to all types of high-voltage • VDE 0670 T4 is the translation of IEC 60282-1 into German
current-limiting fuses designed for use outdoors or indoors
on alternating current systems of 50 Hz and 60 Hz • VDE 0670 T402: Selection of current-limiting fuses for
and of rated voltages exceeding 1000V. transformer circuits (German addition to VDE 0670 T4)
VDE 0670 T402 defi nes fuses with ratings 6.3A to 160A.
This standard defi nes test set-up, fuse characteristics All ratings over this range are automatically only VDE 0670 T4.
and normal service conditions (without derating) like:
This standard defi nes some additional melting and non-melting
• Operating temperature: -25°C to 40°C
gates to increase the performance of the selectivity
• Altitude: 1000m maximum with LV fuses.
It is advisable to replace all three fuse-links when the fuse-link
on one or two phases of a three-phase circuit has operated, International range German range
unless it is defi nitely known that no over-current has passed Complies with IEC 60282-1 IEC 60282-1
through the unmelted fuse-links. (VDE 0670 part 4) (VDE 0670 part 4)
IEC 60787 IEC 60787 and
VDE 0670 part 402
HV fuses standard: IEC 60787 Backup 45DB____P
Application Guide for the selection of high-voltage Backup 45DB____PD*
current limiting fuse-links for transformer circuits. Backup, CPD 45DB____PT
Backup, CPD 45DB____PTD*
IEC/TR 60787, which is a technical report, serves Backup, TH 45DB____PT-x
as an application guide to the use, in distribution transformer
circuit applications, of fuses complying with the requirements Backup, TH and LPL** 45DB____PTS**
of IEC 60282-1. Therefore, this document is informative, * Lower power disspation
not normative. ** Very low power dissipation
The object of this application guide is to specify criteria
for coordination of high-voltage fuses with other circuit
components in transformer applications and to give guidance
for the selection of fuse-links with particular reference
to their time-current characteristics and ratings.
All Mersen HV DIN fuses defi ned in this presentation
are in accordance with the IEC 60787 standard.

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