EN 60700-1:2015

Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing EN 60700-1:2015

Publication date:   Oct 15, 2015

General information

60.60 Standard published   Sep 25, 2015


CLC/TC 22X Power electronics

European Norm

29.200   Rectifiers. Converters. Stabilized power supply



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IEC 60700-1:2015 is available as <a href="https://webstore.iec.ch/publication/22992">IEC 60700-1:2015 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60700-1:2015 applies to thyristor valves with metal oxide surge arresters directly connected between the valve terminals, for use in a line commutated converter for high voltage d.c. power transmission or as part of a back-to-back link. It is restricted to electrical type and production tests. The tests specified in this standard are based on air insulated valves. For other types of valves, the test requirements and acceptance criteria can be agreed. This edition includes the following significant technical changes with respect to the previous edition.

a) Definitions of terms "redundant thyristor levels", "thyristor level", "valve section" have been changed for clarification.

b) The notes were added to test requirements of dielectric d.c. voltage tests for valve support, MVU, valve, specifying that before repeating the test with opposite polarity, the tested object may be short-circuited and earthed for several hours. The same procedure may be followed at the end of the d.c. voltage test.

c) Table 1 on thyristor level faults permitted during type tests was supplemented.

d) The alternative MVU dielectric test method was added.

e) It was specified that production tests may include routine tests as well as sample tests.

f) It was added into test requirements for periodic firing and extinction tests that a scaling factor for tests shall be applied when testing with valve sections.

Life cycle


EN 60700-1:1998

EN 60700-1:1998/A2:2008

EN 60700-1:1998/A1:2003


EN 60700-1:2015
60.60 Standard published
Sep 25, 2015


EN 60700-1:2015/A1:2021

EN 60700-1:2015/AC:2017-02