EN 60077-2:2002

SLOVENSKI STANDARD
01-maj-2003
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Railway applications - Electric equipment for rolling stock -- Part 2: Electrotechnical
components - General rules
Bahnanwendungen - Elektrische Betriebsmittel auf Bahnfahrzeugen -- Teil 2:
Elektrotechnische Bauteile - Allgemeine Regeln
Applications ferroviaires - Equipements électriques du matériel roulant -- Partie 2:
Composants électrotechniques - Règles générales
Ta slovenski standard je istoveten z: EN 60077-2:2002
ICS:
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60077-2
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2002
ICS 45.060
English version
Railway applications -
Electric equipment for rolling stock
Part 2: Electrotechnical components -
General rules
(IEC 60077-2:1999, modified)
Applications ferroviaires - Bahnanwendungen -
Equipements électriques du matériel Elektrische Betriebsmittel
roulant auf Bahnfahrzeugen
Partie 2: Composants électrotechniques - Teil 2: Elektrotechnische Bauteile -
Règles générales Allgemeine Regeln
(CEI 60077-2:1999, modifiée) (IEC 60077-2:1999, modifiziert)

This European Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60077-2:2002 E
Foreword
The text of the International Standard IEC 60077-2:1999, prepared by IEC TC 9, Electric
railway equipment, together with the common modifications prepared by SC 9XB,
Electromechanical material on board of rolling stock, of Technical Committee CENELEC
TC 9X, Electrical and electronic applications for railways, was submitted to the Unique
Acceptance Procedure and was approved by CENELEC as EN 60077-2 on 2002-03-01.

The following dates were fixed:

- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-03-01

- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-03-01

This Part 2 shall be read in conjunction with EN 60077-1.

In this European Standard the common modifications to the International Standard are
indicated by a vertical line in the left margin of the text.

Subclauses, tables and figures which are additional to those in IEC 60077-2 are prefixed "Z".

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A and ZA are normative and annex B is informative.
Annex ZA has been added by CENELEC.
__________
- 3 - EN 60077-2:2002
Contents
Introduction.6
1 Scope.6
2 Normative references.7
3 Definitions.7
3.1 Components.7
3.2 Component parts.8
3.3 Operational features.10
4 Classification.13
5 Characteristics.13
5.1 List of characteristics.13
5.2 Type of component.13
5.3 Rated and limiting values for the main circuit.13
5.3.1 General.13
5.3.2 Rated voltages.14
5.3.3 Rated currents.14
5.3.4 Rated time constants (for d.c. switchgear) .14
5.3.5 Rated power factor (for a.c. switchgear).14
5.4 Operational frequency classes .15
5.5 Component categories.15
5.6 Electric control circuits.15
5.7 Pneumatic control circuits .16
5.8 Manual control.16
5.9 Electric auxiliary circuits .16
5.10 Pneumatic auxiliary circuits .16
5.11 Peak arc voltages.16
6 Product information.17
6.1 Nature of information.17
6.1.1 Component documentation.17
6.1.2 Other information.18
6.2 Marking .18
6.3 Instructions for storage, installation, operation and maintenance .18
7 Normal service conditions.18
8 Constructional and performance requirements.18
8.1 Constructional requirements.18
8.1.1 Terminals and connecting capacity .18
8.1.2 Bonding terminal.19

8.2 Performance requirements.19
8.2.1 Operating conditions.19
8.2.2 Temperature rise.20
8.2.3 Operation following inactivity.20
8.2.4 Electromagnetic compatibility (EMC).20
8.2.5 Acoustic noise emission .20
8.2.6 Dielectric properties.20
8.2.7 Switching overvoltages.21
8.2.8 Operational performance capability.21
8.2.9 Ability to withstand vibration and shock.23
8.2.10 Ability to withstand short-time current.23
9 Tests.23
9.1 Kinds of tests.23
9.2 Verification of constructional requirements.24
9.3 Type tests.24
9.3.1 Test sequences.24
9.3.2 General test conditions.24
9.3.3 Test sequence I: general performance characteristics.25
9.3.4 Test sequence II: ability to withstand vibration and shock.26
9.3.5 Test sequence III: critical currents.27
9.3.6 Test sequence IV: climatic conditions .27
9.3.7 Test sequence V: other tests.28
9.4 Routine tests.28
9.4.1 General.28
9.4.2 Mechanical operation.28
9.4.3 Measurement of resistance or impedance .28
9.4.4 Air-tightness (for pneumatic components).28
9.4.5 Dielectric withstand.28
9.4.6 Check on the setting and operation of protective equipment and relays
(calibration).28

Annex A (normative) Correspondence between auxiliary contacts and steady states
of switchgear .29
Annex B (informative) Bibliography .31
Annex ZA (normative) Normative references to international publications with their
corresponding European publications.32

- 5 - EN 60077-2:2002
Figures
Figure A.1  Relationship between auxiliary contacts and steady states of switchgear .30

Tables
Table 1  Rated time constants.14
Table 2  Temperature rise limits and temperature limits .20
Table 3  Operational performance capability for category A1 component .22
Table 4  Operational performance capability for category A2 component .22
Table 5  Operational performance capability for category A3 component .23
Table 6  Operational performance capability for category A4 component .23
Table 7  List of test sequences.24
Table 8  Tolerances on test values .25

Introduction
This product standard is Part 2 of the EN 60077 series of product standards:
Railway applications - Electric equipment for rolling stock
- Part 1: General service conditions and general rules,
- Part 2: Electrotechnical components - General rules,
- Part 3: Electrotechnical components - Rules for d.c. circuit-breakers,
- Part 4: Electrotechnical components - Rules for a.c. circuit-breakers,
- Part 5: Electrotechnical components - Rules for HV fuses.

This document has used IEC 60077-2 as its base and its form and structure have been
modified to take account of already existing European Standards covering related subjects.

1 Scope
In addition to the rules given in EN 60077-1, this European standard provides general rules
for all electrotechnical components installed in power circuits, auxiliary circuits and control
circuits, etc., on rolling stock.

NOTE Certain of these rules may, after agreement between user and manufacturer, be used for
electrotechnical components installed on vehicles other than rail rolling stock such as mine locomotives,
trolleybuses, etc.
The purpose of this standard is to adapt the general rules given in EN 60077-1 to all
electrotechnical components for rolling stock, in order to obtain uniformity of requirements
and tests for the corresponding range of components.

Electrotechnical components are mainly switchgear and controlgear, irrespective of their
control, including also relays, valves, resistors, fuses, etc.

NOTE The incorporation of electronic components or electronic sub-assemblies into electrotechnical
components is now common practice. Although this standard is not applicable to electronic equipment, the
presence of electronic components does not provide a reason to exclude such electrotechnical components from
the scope.
Electronic sub-assemblies should comply with the relevant standard.

This standard states
a) the characteristics of the components,
b) the constructional and performance requirements with which components have to comply,
c) the tests intended to confirm compliance of the components with these characteristics
under these service conditions, and the methods to be adopted for these tests,
d) the information to be marked on, or given with the apparatus.

This standard does not cover industrial electrotechnical components which comply with their
own product standard. In order to ensure satisfactory operation of these components for
rolling stock, this standard should be used to specify only the particular requirements for
railway application. In that case, a specific document should state the additional
requirements with which the industrial components are to comply, e.g.
- to be adapted (for example for control voltage, environmental conditions, etc.), or
- to be installed and used such that they do not have to endure specific railway conditions,
or
- to be additionally tested to prove that these components can withstand satisfactorily the
railway conditions.
- 7 - EN 60077-2:2002
2 Normative references
NOTE Normative references to international publications are listed in annex ZA (normative).

3 Definitions
For the purposes of this part of EN 60077, the definitions given in clause 3 of EN 60077-1,
together with the following additional definitions, apply.

NOTE The definitions are also given to be used as reference terminology for the other parts of this series of
standards, as well as for other particular documents.

3.1 Components
3.1.1
active electrical component
simple device or assembly of devices which, in response to a control signal, executes a
function or various inseparable functions by changing their state, for which the control or the
function is electrical (e.g. contactor, relay, etc.)

3.1.2
passive electrical component
simple device or assembly of devices which are not included in the active electrical
components group and have at least one electrical function (e.g. mounting insulator,
permanent connection, resistor, capacitor, etc.)

3.1.3
switchgear and controlgear
a general term covering switching devices and their combination with associated control,
measuring, protective and regulating equipment, also assemblies of such devices and
equipment with associated interconnections, accessories, enclosures and supporting
structures [IEV 441-11-01]
3.1.4
switchgear
a general term covering switching devices and their combination with associated control,
measuring, protective and regulating equipment, also assemblies of such devices and
equipment with associated interconnections, accessories, enclosures and supporting
structures, intended in principle for use in connection with generation, transmission,
distribution and conversion of electric energy [IEV 441-11-02]

3.1.5
controlgear
a general term covering switching devices and their combination with associated control,
measuring, protective and regulating equipment, also assemblies of such devices and
equipment with associated interconnections, accessories, enclosures and supporting
structures, intended in principle for the control of electric energy consuming equipment
[IEV 441-11-03]
3.1.6
switching device
a device designed to make or break the current in one or more electric circuits
[IEV 441-14-01]
NOTE A switching device may perform one or both of these operations.

3.1.7
fuse
a device that, by the fusing of one or more of its specifically designed and proportioned
components, opens the circuit in which it is inserted by breaking the current when this
exceeds a given value for a sufficient time. The fuse comprises all the parts that form the
complete device [IEV 441-18-01]

3.1.8
switch (mechanical)
a mechanical switching device capable of making, carrying and breaking currents under
normal circuit conditions which may include specified operating overload conditions and also
carrying for a specified time currents under specified abnormal circuit conditions such as
those of short-circuit [IEV 441-14-10]

NOTE A switch may be capable of making but not breaking short-circuit currents.

3.1.9
circuit breaker
a mechanical switching device, capable of making, carrying and breaking currents under
normal circuit conditions and also making, carrying for a specified time and breaking currents
under specified abnormal circuit conditions such as those of short-circuit [IEV 441-14-20]

3.1.10
contactor (mechanical)
a mechanical switching device having only one position of rest, operated otherwise than by
hand, capable of making, carrying and breaking currents under normal circuit conditions
including operating overload conditions [IEV 811-29-07]

NOTE Contactors may be designated according to the method by which the force for closing the main
contacts is provided.
3.1.11
surge arrester
a device designed to protect the electrical apparatus from high transient overvoltages and to
limit the duration and frequently the amplitude of the follow-on current [IEV 604-03-51]

3.1.12
disconnector (isolator)
a mechanical switching device which provides, in the open position, an isolating distance in
accordance with specified requirements [IEV 811-29-17]

NOTE A disconnector is capable of opening and closing a circuit only when negligible current is broken or
made.
3.2 Component parts
3.2.1
pole of a switching device
the portion of a switching device associated exclusively with one electrically separated
conducting path of its main circuit and excluding those portions which provide a means for
mounting and operating all poles together [IEV 441-15-01]

NOTE A switching device is called single-pole if it has only one pole. If it has more than one pole, it may be
called multiple (two-pole, three-pole, etc.) provided the poles are or can be coupled in such a manner as to
operate together.
- 9 - EN 60077-2:2002
3.2.2
main circuit (of a switching device)
all the conductive parts of a switching device included in the circuit which it is designed to
close or open [IEV 441-15-02]

NOTE This does not include parts that are included in the auxiliary circuit of the switching device (see 3.2.4).

3.2.3
control circuit (of a switching device)
all the conductive parts (other than the main circuit) of a switching device which are included
in a circuit used for the closing operation or opening operation, or both, of the device
[IEV 441-15-03]
3.2.4
auxiliary circuit (of a switching device)
all the conductive parts of a switching device which are intended to be included in a circuit
other than the main circuit and the control circuits of the device [IEV 441-15-04]

NOTE Some auxiliary circuits fulfil supplementary functions such as signalling, interlocking, etc., and, as such,
they may be part of the control circuit of another switching device.

3.2.5
contact (of a mechanical switching device)
conductive parts designed to establish circuit continuity when they touch and which, due to
their relative motion during an operation, open or close a circuit or, in the case of hinged or
sliding contacts, maintain circuit continuity [IEV 441-15-05]

3.2.6
main contact
a contact included in the main circuit of a mechanical switching device, intended to carry, in
the closed position, the current of the main circuit [IEV 441-15-07]

3.2.7
auxiliary contact
a contact included in an auxiliary circuit and mechanically operated by the switching device
[IEV 441-15-10]
3.2.8
make contact (normally open)
a control or auxiliary contact which is closed when the main contacts of the mechanical
switching device are closed and open when they are open [IEV 811-31-03, mod]

NOTE See complementary information in annex A of this standard.

3.2.9
break contact (normally closed)
a control or auxiliary contact which is open when the main contacts of the mechanical
switching device are closed and closed when they are open [IEV 811-31-04, mod]

NOTE See complementary information in annex A of this standard.

3.2.10
relay (electrical)
a device designed to produce sudden, predetermined changes in one or more electrical
output circuits when certain conditions are fulfilled in the electrical input circuits controlling
the device [IEV 446-11-01, mod]

NOTE This definition may also be applied to relays for which the actuation is not electrical.

3.2.11
release (of a mechanical switching device)
advice, mechanically connected to a mechanical switching device, which releases the
holding means and permits the opening or the closing of the switching device
[IEV 441-15-17]
3.3 Operational features
3.3.1
operation (of a mechanical switching device)
the transfer of the moving contact(s) from one position to an adjacent position
[IEV 441-16-01]
NOTE 1 For example, for a circuit-breaker, this may be a closing operation or an opening operation.

NOTE 2 If distinction is necessary, an operation in the electrical sense, e.g. make or break, is referred to as a
switching operation, and an operation in the mechanical sense, e.g. close or open, is referred to as a mechanical
operation.
3.3.2
operating cycle (of a mechanical switching device)
a succession of operations from one position to another and back to the first position through
all other positions, if any [IEV 441-16-02]

3.3.3
operating sequence (of a mechanical switching device)
a succession of specified operations with specified time intervals [IEV 441-16-03]

3.3.Z1
operational frequency
the number of operations for which the component is designed to perform

3.3.4
manual control
control of an operation by human intervention [IEV 441-16-04]

3.3.5
closed position (of a mechanical switching device)
the position in which the predetermined continuity of the main circuit of the device is secured
[IEV 441-16-22]
3.3.6
open position (of a mechanical switching device)
the position in which the predetermined dielectric withstand voltage requirements are
satisfied between open contacts in the main circuit of the device [IEV 441-16-23, mod]

NOTE This definition differs from IEV 441-16-23 to meet the requirements of dielectric properties.

3.3.7
breaking current (of switching device or a fuse)
the current in a pole of a switching device or in a fuse at the instant of initiation of the arc
during a breaking process [IEV 441-17-07]

NOTE For a.c., the current is expressed as the symmetrical r.m.s. value of the a.c. component.

- 11 - EN 60077-2:2002
3.3.8
prospective current (of a circuit and with respect to a switching device or a fuse)
The current that would flow in the circuit if each pole of the switching device or the fuse were
replaced by a conductor of negligible impedance [IEV 441-17-01]

NOTE The method to be used to evaluate and to express the prospective current is to be specified in the
relevant product standard.
3.3.9
prospective making current (for a pole of a switching device)
the prospective current when initiated under specified conditions [IEV 441-17-05]

NOTE The specified conditions may relate to the method of initiation, e.g. by an ideal switching device, or to
the instant of initiation, e.g. leading to the maximum prospective peak current in an a.c. circuit, or to the highest
rate of rise. The specification of these conditions is given in the relevant product standard.

3.3.10
prospective breaking current (for a pole of a switching device or a fuse)
the prospective current evaluated at a time corresponding to the instant of the initiation of the
breaking process [IEV 441-17-06]

NOTE Specifications concerning the instant of the initiation of the breaking process are given in the relevant
product standard. For mechanical switching devices or fuses, it is usually defined as the moment of initiation of
the arc during the breaking process.

3.3.11
breaking capacity (of a switching device or a fuse)
a value of prospective breaking current that a switching device or a fuse is capable of
breaking at a stated voltage under prescribed conditions of use and behaviour
[IEV 441-17-08, mod]
NOTE 1 The voltage to be stated and the conditions to be prescribed are dealt with in the relevant product
standard.
NOTE 2 For a.c., the current is expressed as the symmetrical r.m.s. value of the a.c. component.

3.3.12
short circuit breaking capacity
a breaking capacity for which prescribed conditions include a short-circuit at the terminals of
the switching device [IEV 441-17-11]

3.3.13
critical current (or critical currents range)
value (or range of values) of d.c. current at which the component is not capable of operating
without risk of failure to break

3.3.14
making capacity (of a switching device)
a value of prospective making current that a switching device is capable of making at a
stated voltage under prescribed conditions of use and behaviour [IEV 441-17-09]

NOTE The voltage to be stated and the conditions to be prescribed are dealt with in the relevant product
standard.
3.3.15
short circuit making capacity
a making capacity for which prescribed conditions include a short circuit at the terminals of
the switching device [IEV 441-17-10]

3.3.16
short-time withstand current
the current that a circuit or a switching device in the closed position can carry during a
specified short time under prescribed conditions of use and behaviour [IEV 441-17-17]

3.3.17
applied voltage (for a switching device)
the voltage which exists across the terminals of a pole of a switching device just before the
making of the current [IEV 441-17-24]

NOTE This definition applies to a single-pole device. For a multipole device it is the phase-to-phase voltage
across the supply terminals of the device.

3.3.18
recovery voltage
the voltage which appears across the terminals of a pole of a switching device or a fuse after
the breaking of the current [IEV 441-17-25]

NOTE 1 This voltage may be considered in two successive intervals of time, one during which a transient
voltage exists, followed by a second one during which the power-frequency voltage or the steady-state recovery
voltage alone exists.
NOTE 2 This definition applies to a single-pole device. For a multipole device it is the phase-to-phase voltage
across the supply terminals of the device.

3.3.19
peak arc voltage (of a mechanical switching device)
the maximum instantaneous value of voltage which, under prescribed conditions, appears
across the terminals of a pole of a switching device during the arcing time [IEV 441-17-30]

3.3.20
opening time (of a mechanical switching device)
the interval of time between the specified instant of initiation of the opening operation and the
instant when the arcing contacts have separated in all poles [IEV 441-17-36]

NOTE The instant of initiation of the opening operation, i.e. the application of the opening command (e.g.
energising the release, etc.) is given in the relevant product standard.

3.3.21
arcing time (of a pole or a fuse)
the interval of time between the instant of the initiation of the arc in a pole or a fuse and the
instant of final arc extinction in that pole or that fuse [IEV 441-17-37]

3.3.22
break time
the interval of time between the beginning of the opening time of a mechanical switching
device (or the pre-arcing time of a fuse) and the end of the arcing time [IEV 441-17-39]

3.3.23
closing time
the interval of time between the initiation of the closing operation and the instant when the
contacts touch in all poles [IEV 441-17-41]

- 13 - EN 60077-2:2002
4 Classification
This clause is intended to list the characteristics of a component on which information is
given by the manufacturer and which shall be verified by testing where relevant.

The components are classified
- according to their operational frequency classes C1, C2 or C3,
The characteristics of these categories, applicable to active electrical components only,
are given in 5.4.
- according to their component category A1, A2, A3, A4 or B,
The characteristics of these categories are given in 5.5.
- according to the type of design:
- open construction;
- construction with an enclosure,
- according to the degree of protection provided by the enclosure (see EN 60529).

5 Characteristics
5.1 List of characteristics
The characteristics of a component shall be stated, as applicable, among those of the
following list:
- type of component (5.2);
- rated and limiting values of the main circuit (5.3);
- operational frequency classes (5.4);
- component category (5.5);
- electric control circuits (5.6);
- pneumatic control circuit (5.7);
- manual control (5.8);
- electric auxiliary circuits (5.9);
- pneumatic auxiliary circuits (5.10);
- peak arc voltages (5.11).
5.2 Type of component
It is necessary to indicate the following, as applicable:
- type of component (e.g. d.c. contactor, disconnector, master controller, braking controller);
- number of poles;
- rated and limiting voltages of the main circuit (5.3);
- rated and limiting currents of the main circuit (5.3);
- interrupting medium;
- polarity;
- operating conditions (method of operation, method of control, etc.);
- type of design (clause 4);
- degree of protection provided by the enclosure (clause 4).

5.3 Rated and limiting values for the main circuit

5.3.1 General
Rated values are assigned by the manufacturer. They shall be stated in accordance with
5.3.2 to 5.3.5.
5.3.2 Rated voltages
A component is defined by the following rated voltages given in 5.1 of EN 60077-1:
- rated operational voltage (U );
e
NOTE The limiting values of operating conditions are given in 8.2.1.1 to 8.2.1.8 of EN 60077-1.
- rated insulation voltage (U );
Nm
- rated impulse voltage (U ) (see EN 50124-1).
Ni
5.3.3 Rated currents
A component is defined by the following rated currents:
- rated operational current (I ) at the rated time constant T2 (see 5.3.4) or for the rated
e
power factor (see 5.3.5) where relevant (given in 5.3 of EN 60077-1);
- rated short time withstand current (I ) (see 3.3.16);
cw
- conventional free air thermal current (I ).
th
The conventional free air thermal current is the maximum value of test current to be used for
temperature rise tests of equipment in free air at the maximum ambient air temperature.

Free air is understood to be air under normal indoor conditions, reasonably free from
draughts and external radiation.

For a continuous duty, the maximum value of the rated operational current shall be less than
the value of the conventional free air thermal current if no forced cooling is used.

5.3.4 Rated time constants (for d.c. switchgear)

A component is characterised according to the applicable rated time constants T1, T2 and T3
given in Table 1. T2 is the rated time constant for operating conditions considered as normal;

it is used for tests as specified in 9.3.3.4. T1 and T3 are time constants corresponding to

extreme situations; they are used for tests as specified in 9.3.5.

Table 1 - Rated time constants
Rated operational voltage Rated time constants

V ms
T1 T2 T3
0 15 50
U ≤ 900
e
0 15 40
900 < U ≤ 1 800
e
U > 1 800 0 15 30
e
NOTE A time constant of 0 ms signifies that the load for the tests is made up of resistors without any
intentional addition of reactors.

5.3.5 Rated power factor (for a.c. switchgear)

The operational performance capability of a component is defined for a rated power factor of
0,8, whatever the rated operational voltage and current. If necessary the power factor for
short circuit and overload tests will be as agreed between user and manufacturer.

- 15 - EN 60077-2:2002
5.4 Operational frequency classes

The operational frequencies C1, C2 and C3 are defined below:
- C1: light operational frequency (e.g. component which is part of the protection and/or
isolation equipment which operates only when a failure is detected);
- C2: medium operational frequency (e. g. component which is part of an equipment that
operates in any of the following cases: at each commencement of service, each start,
each stop, each neutral section [IEV 811-36-16], each sectioning point [IEV 811-36-10],
each end of service);
- C3: heavy operational frequency (e.g. component which is part of an equipment that
operates during each traction sequence or braking sequence, or component such as a
compressor contactor).
NOTE The references given between brackets refer to IEC 60050-811.

5.5 Component categories
There are several component categories:
- A1: switching devices for auxiliary circuits [IEV 811-25-05] or low voltage circuits
[IEV 811-25-02] irrespective of their control, except components with manual control (e.g.
relays, auxiliary contactors and their accessories, etc.);
- A2: switching devices for power circuit [IEV 811-25-03] (e. g. d.c. power contactors),
irrespective of the nature of their control, except components with manual control;
NOTE Main circuit breakers are covered by their own product standard (see EN 60077-3 and
EN 60077-4).
- A3: manually-controlled switching devices (e. g. switches, push-buttons, etc., for control
equipment);
- A4: power switchgear which does not operate on load (e. g. disconnector, system
changeover switch [IEV 811-29-37] etc.);
- B: other components not covered by the above.

NOTE The references given between brackets refer to IEC 60050-811.

5.6 Electric control circuits
The characteristics of electric control circuits are as follows:
- rated frequency, if a.c.;
- rated voltage of the control circuit and its limiting values;
- rated voltage of the control supply (if it differs from the rated voltage of control circuit due
to the presence of built-in transformers, rectifiers, resistors, etc.);
- power consumption of the control supply at its rated voltage.

The rated control circuit voltage and rated frequency, if any, are the values on which the
operating and temperature rise characteristics of the control circuit are based. The correct
operating conditions are based upon a value of the control supply voltage as defined in 5.2 of
EN 60077-1.
5.7 Pneumatic control circuits

The characteristics of air supply control circuits (pneumatic or electro-pneumatic) are as
follows:
- rated air pressure of the control circuit and limiting values;
- rated air pressure of the control supply (if it differs from the rated air pressure of the
control circuit due to the presence of built-in regulators);
- volume of air, at the rated air pressure, required for each closing and each opening
operation.
The rated air pressure of a pneumatic or electro-pneumatic component is the air pressure on
which the operating characteristics of the pneumatic control system are based.

The rated operating conditions are based upon a value of the rated air pressure as defined in
5.5. of EN 60077-1.
5.8 Manual control
If necessary, the following characteristics may be specified:
- form of the manual actuator (handle, knob, push button, etc.);
- actuating force (or torque): the force (or torque) necessary to complete the intended
operation;
- restoring force (or torque): the force (or torque) provided to restore an actuator to its initial
position;
- travel: the displacement (linear or rotary) of the actuator.

5.9 Electric auxiliary circuits

The characteristics of the electric auxiliary circuits are the number and nature of the contacts
(make contact, break contact, etc.) of each of these circuits and their rated characteristics, as
follows:
- rated operational voltage(s);
- rated insulation voltage;
- rated operational current(s);
- conventional free air thermal current;
- minimum current associated with an operational voltage that the auxiliary circuit is capable
of making and carrying reliably;
- sequence of the auxiliary contacts in relation to the main contacts;
- rated short time withstand current (I ).
CW
5.10 Pneumatic auxiliary circuits

The characteristics of the pneumatic auxiliary circuits are the number and nature of the
valves of each of these circuits and their rated characteristics, as follows:
- rated air pressure;
- rated air flow;
- sequence of the pneumatic auxiliary valves relating to the main contacts.

5.11 Peak arc voltages
The manufacturer shall specify the maximum value of the peak arc voltages caused by
operating of the component.
- 17 - EN 60077-2:2002
6 Product information
6.1 Nature of information
The information shall be given in the manufacturer's catalogue or manual. It concerns the
identification and characteristics.

In addition, other information relative to the application may be especially required. This
information shall be the result of an agreement.

6.1.1 Component documentation
The information listed in 6.1.1.1 and 6.1.1.2 shall be given in the manufacturer's catalogues
or manual.
6.1.1.1 Identification
This shall include
- manufacturer's name or trademark,
- type designation,
- modification status (if applicable),
- reference to the present standard if the manufacturer declares compliance with it.

6.1.1.2 Characteristics (as applicable)

This shall include
- each rated operational voltage (U ),
e
- each rated current (I ) at the rated operational voltage,
e
- conventional free air thermal current (I ) if this differs from the rated operational current.
th
This shall be supplemented by the value of the ambient air temperature at which the
component was calibrated,
- each operational frequency if the manufacturer declares compliance with one or several of
them,
- each component category if the manufacturer declares compliance with one or several of
them,
- rated insulation voltage (U ),
Nm
- rated impulse voltage (U ),
Ni
- peak arc voltages, under relevant test conditions,
- rated short-circuit making and breaking capacities at corresponding rated time constants
or rated power factor,
- maximum current consumption,
- IP code in the case of an enclosed component (according to EN 60529),
- pollution degree (according to Table A.4 of EN 50124-1),
- rated voltage and current (including frequency if applicable) of each control circuit,
- rated air pressure and limiting values,
- number and type of electric auxiliary circuits and their characteristics,
- number and type of pneumatic auxiliary circuits and their characteristics,
- overall dimensions,
- minimum size of the enclosure and, if applicable, data concerning ventilation, to which the
rated characteristics apply,
- minimum distance between the components and metal parts connected to earth for
components which are intended for use without an enclosure,
- weight.
6.1.2 Other information
When the application requires a special utilisation of the component, agreed by the
manufacturer, supplementary information shall be given on request.

This may concern, for example,
- range of operational current under special operating conditions,
- overload duty at fault occurrence,
- overload duty without any breaking on load, etc.

6.2 Marking
The following data or identification shall be marked:
- manufacturer's name or trademark;
- type designation;
- reference to this standard if the manufacturer declares compliance with it;
- serial number designation, or date or code of manufacture;
- rated operational voltage (U ) and associated rated operational current (l );
e e
- terminals and polarity, when necessary (this may be made in a diagram form);
- bonding terminal, where applicab
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