IEC 61992-2:2006/AMD1:2014

Amendment 1 - Railway applications - Fixed installations - DC switchgear - Part 2: DC circuit-breakers

Amendement 1 - Applications ferroviaires - Installations fixes - Appareillage à courant continu - Partie 2: Disjoncteurs en courant continu

General Information

• Status: Published
• Publication Date: 28-Apr-2014
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: TC 9 - Electrical equipment and systems for railways
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jun-2014
• Completion Date: 29-Apr-2014

Relations

• Amends: IEC 61992-2:2006 - Railway applications - Fixed installations - DC switchgear - Part 2: DC circuit-breakers
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61992-2 ®
Edition 2.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Railway applications – Fixed installations – DC switchgear –
Part 2: DC circuit-breakers
Applications ferroviaires – Installations fixes – Appareillage à courant continu –
Partie 2: Disjoncteurs en courant continu

IEC 61992-2:2006-02/AMD1:2014-04(en-fr)

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IEC 61992-2 ®
Edition 2.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Railway applications – Fixed installations – DC switchgear –

Part 2: DC circuit-breakers
Applications ferroviaires – Installations fixes – Appareillage à courant continu –

Partie 2: Disjoncteurs en courant continu

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 45.060 ISBN 978-2-8322-1527-2

– 2 – IEC 61992-2:2006/AMD1:2014
© IEC 2014
FOREWORD
This amendment has been prepared by IEC technical committee 9: Electrical equipment and
systems for railways.
The text of this amendment is based on the following documents:
CDV Report on voting
9/1791/CDV 9/1851/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
2 Normative references
Add "+ A1:2014" to IEC 61992-1:2006
5.2 Type of circuit-breaker
Replace 5.2 b) by:
b) Breaking characteristics (class designation):
1) circuit-breakers without intended limitation of current rise during maximum fault test
– high speed current limiting circuit-breaker H;
the H circuit-breaker has an opening time not greater than 5 ms and a total break
time not greater than 20 ms, when the current to be interrupted has a prospective
sustained value of at least 7 times the circuit-breaker setting and
di
 
≥ 5 kA/ms
 
dt
 
t = 0
– very-high speed current limiting circuit-breaker V;
the V circuit-breaker has a total break time not greater than 2 ms, irrespective of
the other parameters of the circuit;
– semi-high speed circuit-breaker S;
the S circuit-breaker has an opening time not greater than 15 ms and a total break
time not greater than 30 ms, when the current to be interrupted has a prospective
sustained value of at least 3,5 times the circuit-breaker setting and

© IEC 2014
di
 
≥ 1,7 kA/ms
 
dt
 
t = 0
2) circuit-breakers with intended limitation of current rise during maximum fault test
– cut-off current limiting circuit-breaker C;
the C circuit-breaker limits the cut-off current before the short-circuit current to be
interrupted reaches its maximum value; the C circuit breaker can be an air circuit
breaker or a hybrid circuit breaker;
Table 6 gives the maximum values of the cut-off current depending on the preferred
values of rated short-circuit current together with the maximum allowable value of
initial current rise;
Table 6 applies to C circuit-breakers for nominal voltages up to and including
1 500 V.
Table 6 – Limits of the cut-off current of C circuit-breakers during maximum fault test
Short circuit current characteristics Maximum cut-off current
Rated short-circuit Initial rate of rise Circuit time Class C1 Class C2
current constant
I
Nss
kA kA/ms ms kA kA
20 1,5 13,3 15 17
50 3 16,7 25 30
75 10 7,5 50 60
100 10 10,0 55 70
Smoothing reactors should be installed for substations in order to realize an initial rate of rise
equal to or less than the applicable value given in Table 6.

– 4 – IEC 61992-2:2006/AMD1:2014
© IEC 2014
Replace existing Table 1 by the following new Table 1:
Table 1 – Shortened type designation
a a
Items above b) c) d) h)
Options H I
U O
V L
U E
S R
B P
C
Examples H/L/B/E
V/I/P S/R/O
b
H/R and L/U2
NOTE When a circuit-breaker is not suitable to perform all duties as given in 5.3.4.2, this fact will be indicated
by means of the lower case letter(s) designating actual capability according to Table 2, first column (for example
H1/I ff, fr/P).
a
Optional designations.
b
When a circuit-breaker is or shall be suitable for multiple alternate functions, the indication of these functions
shall be preceded by an “and”.

5.3.4.1 Rated short-circuit breaking and making capacities
Replace, in the first paragraph, "designation H or V or S" by "designation H, V, S or C".
Replace the 4th paragraph by the following:
H, V and S circuit breakers having a breaking capacity at a rated track time constant T are
Nc
. For
capable of the same breaking capacity at all lower values of circuit time constant t
c
Type C circuit breakers the initial rate of rise shall not exceed the limits given in Table 6.
5.3.4.2 Duties and test duty cycles
Add, in the last sentence of the Note,“duty 3” as follows:” (duty 1, or duty 2, or duty 3)”.

© IEC 2014
Replace existing Table 2 by the following new Table 2:
Table 2 – Circuit-breaker duties
Duty Use Conditions Test current Prospective peak Time constant
f L Maximum fault I Type H, V and S: By consequence of
Nss
other circuit
≥1,42 × I
Nss parameters
Type C: ≥ I See Table 6
Nss
a
e L Maximum energy 0,5 × I By consequence of 0,5 × T
Nss Nc
other circuit
parameters
d L Distant fault 2 × I By consequence of T
Ne Nc
other circuit
parameters
l L Low current I Not applicable
≅0,01 s
c
ff I Maximum fault I Type H, V and S: By consequence of
Nss
forward other circuit
≥1,42 × I
Nss parameters
See Table 6
Type C: ≥ I
Nss
fr I Maximum fault I Type H, V and S: By consequence of
Nss
reverse other circuit
≥1,42 × I
Nss parameters
Type C: ≥ I See Table 6
Nss
I
lr I Forward low current Not applicable ≅0,01 s
c
after reverse short
b
R
circuit
c
r R Maximum fault I ≥1,42 × I
Nss Nss
reverse with
paralleled converters
c
s R Short time current I
≥1,42 × I
Ncw
Ncw
forward
NOTE 1 For substations equipped with smoothing reactors of high value, the maximum energy condition may
correspond to the maximum fault condition.
NOTE 2 I is to be determined for each type of actual circuit situation. Therefore, I may be different for
Nss Nss
Line L, Interconnector I and Rectifier R circuit-breakers.
a
The factor affecting both I and T for maximum energy fault position is taken for practical reasons as
Nss Nc
0,5. For low values of T , see Table 2 of IEC 61992-1.
Nc
b
R only when explicitly required by the purchaser.
c
The coefficient is 1 with regard to the C circuit-breaker.

– 6 – IEC 61992-2:2006/AMD1:2014
© IEC 2014
Replace existing Table 3 by the following new Table 3:
Table 3 – Test duty cycles
Duty Breaking Test cycle
characteristics
a
f, e, d H,V,S Duty 1 O – 15 s – CO – 15 s – CO – 60 s – CO
Duty 2 O – 7 s – CO – 10 s – CO – 60 s – CO
b c
C Duty 3 O – 10 s – CO
ff, fr, r H,V,S,C O – 15s – CO
l, lr H,V,S,C 10 times (O – 120 s – CO)
s H,V,S,C Carrying for 0,25 s
NOTE 1 O = opening operation, CO = closing operation.
NOTE 2 First opening is made on a short circuit being established.
a
The choice of Duty 1 or 2 is left to the purchaser. If no choice is made, then the duty cycle required is Duty 1.
b
In the case of C, the test cycle of duty e and d are subject to agreement between purchaser and supplier.
c
The standard duty is O – 10 s – CO. However, if AC short-circuit test method is applied, the duration
between O and CO may be reduced to less than 10 s.

8.2 Applicable tests and test sequence
Replace existing Table 4 by the following new Table 4:
Table 4 – List of applicable tests and sequence
Reference to
Group Test description Kind
subclause
General operating characteristics

Verification of conformity to the manufacturing drawings Type and routine 8.3.1
and to characteristics of the circuit-breaker
Mechanical operation Type and routine 8.3.2
Dielectric withstand Type and routine 8.3.3
Temperature-rise Type 8.3.4
Verification of the adjustment of the relays and releases Routine 8.3.5
Electrical endurance Type 8.3.6
Mechanical endurance Type 8.3.7
Short circuit behaviour
Verification of the H, V or S characteristic Type 8.3.8.1
Verification of the C characteristic Type 8.3.8.9
Verification of the short-time withstand current of rectifier Type 8.3.9
circuit-breakers R
Verification of the adjustment of
...