IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
7.1.8.4 Terminal identification and marking
terminal intended exclusively for the neutral
conductor
P
protective earth terminal N/A
other terminals N/A
7.1.9 part 1 Additional requirements for equipment provided with a neutral pole
When equipment is provided with a pole intended
only for connecting the neutral, this pole shall be
clearly identified to that effect by the letter N (see
7.1.7.4.).
P
A switched neutral pole shall break not before and
shall make not after the other poles
P
For equipment having a value of conventional
thermal current (free air or enclosed, see 4.3.2.1
and 4.3.2.2) not exceeding 63 A, this value shall be
identical for all poles
Same as In P
For higher conventional thermal current values, the
neutral pole may have a value of conventional
thermal current different from that of the other
poles, but not less than half that value or 63 A,
whichever is the higher
Same as In P
if a pole with an appropriate making and breaking
capacity is used as a neutral pole, then all poles,
incl. the neutral pole, shall operate substantially
together.
P
7.1.10 Provisions for protective earthing
7.1.10.1 The exposed conductive parts (e.g. chassis,
framework and fixed parts of metal enclosures)
other than those which cannot constitute a danger
shall be electrically interconnected and connected
to a protective earth terminal for connection to an
earth electrode or to an external protective
conductor
N/A
part 1 This requirement can be met by the normal
structural parts providing adequate electrical
continuity and applies whether the equipment is
used on its own or incorporated in an assembly
N/A
Exposed conductive parts are considered not to
constitute a danger if they cannot be touched on
large areas or grasped with the hand or if they are
of small size (approximately 50 mm x 50 mm) or
are so located as to exclude any contact with live
parts
N/A
Page 18 of 80 Report No. 3302407.50
IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
7.1.10.2
part 1
Protective earth terminal
The protective earth terminal shall be readily
accessible and so placed that the connection of the
equipment to the earth electrode or to the
protective conductor is maintained when the cover
or any other removable part is removed
N/A
The protective earth terminal shall be suitably
protected against corrosion
N/A
In the case of equipment with conductive
structures, enclosures, etc., means shall be
provided, if necessary, to ensure electrical
continuity between the exposed conductive parts
the equipment and the metal sheathing of
connecting conductors
N/A
The protective earth terminal shall have no other
function, except when it is intended to be
connected to a PEN conductor (see 2.1.1.5 –
Note). In this case, it shall also have the function of
a neutral terminal in addition to meeting the
requirements applicable to the protective earth
terminal
N/A
7.1.10.3 Protective earth terminal marking and identification
The protective earth terminal shall be clearly and
permanently identified by its marking
N/A
The identification shall be achieved by colour
(green-yellow mark) or by the notation PE, or PEN,
as applicable, in accordance with IEC 60445,
subclause 5.3, or, in the case of PEN, by a
graphical symbol for use on equipment
N/A
Graphical symbol to be used:
60417-2-IEC-5019 Protective earth (ground)
in accordance with IEC 60417-2
N/A
7.1.11 Enclosure for equipment
7.1.11.1 Design
The enclosure, when it is opened: all parts
requiring access for installation and maintenance
are readily accessible
N/A
Sufficient space shall be provided inside the
enclosure
N/A
Page 19 of 80 Report No. 3302407.50
IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
The fixed parts of a metal enclosure shall be
electrically connected to the other exposed
conductive parts of the equipment and connected
to a terminal which enables them to be earthed or
connected to a protective conductor
N/A
Under no circumstances shall a removable metal
part of the enclosure be insulated from the part
carrying the earth terminal when the removable
part is in place
N/A
The removable parts of the enclosure shall be
firmly secured to the fixed parts by a device such
that they cannot be accidentally loosened or
detached owing to the effects of operation of the
equipment or vibrations
N/A
When an enclosure is so designed as to allow the
covers to be opened without the use of tools,
means shall be provided to prevent loss of the
fastening devices
N/A
If the enclosure is used for mounting push-buttons,
it shall not be possible to remove the buttons from
the outside of the enclosure
N/A
7.1.11.2 Insulation
If, in order to prevent accidental contact between a
metallic enclosure and live parts, the enclosure is
partly or completely lined with insulating material,
then this lining shall be securely fixed to the
enclosure
N/A
7.1.12 Degree of protection of enclosed equipment
Degree of protection. IP40 for front cover
Test for first characteristic.
Test for first numeral .......................................... : 4 P
Test for second characteristic
Test for second numeral .................................... : N/A
7.1.13
part 1
Conduit pull-out, torque and bending with metallic conduits
Polymeric enclosures of equipment, whether
integral or not, provided with threaded conduit
entries, intended for the connection of extra heavy
duty, rigid threaded metal conduits complying with
IEC 60981, shall withstand the stresses occurring
during its installation such as pull-out, torque,
bending
N/A
Page 20 of 80 Report No. 3302407.50
IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
7.2 Performance requirements
7.2.1 Operating condition
7.2.1.1 Closing
For a circuit-breaker to be closed safely on to the
making current corresponding to its rated shortcircuit
making capacity, it is essential that it should
be operated with the same speed and the same
firmness as during the type test for proving the
short-circuit making capacity
P
7.2.1.1.1 Dependent manual closing
For a circuit-breaker having a dependent manual
closing mechanism, it is not possible to assign a
short-circuit making capacity rating irrespective of
the conditions of mechanical operation
N/A
Such a circuit-breaker should not be used in
circuits having a prospective peak making current
exceeding 10 kA
N/A
However, this does not apply in the case of a
circuit-breaker having a dependent manual closing
mechanism and incorporating an integral fastacting
opening release which causes the circuitbreaker
to break safely, irrespective of the speed
and firmness with which it is closed on to
prospective peak currents exceeding 10 kA; in this
case, a rated short-circuit making capacity can be
assigned
N/A
7.2.1.1.2 Independent manual closing
A circuit-breaker having an independent manual
closing mechanism can be assigned a short-circuit
making capacity rating irrespective of the
conditions of mechanical operation
P
7.2.1.1.3 Dependent power closing
At 110% of the rated control supply voltage, the
closing operation performed on no-load shall not
cause any damage to the circuit-breaker.
N/A
At 85% of the rated control supply voltage, the
closing operation shall be performed when the
current established by the circuit-breaker is equal
to its rated making capacity within the limits
allowed by the operation of its relays or releases
and, if a maximum time is stated for the closing
operation, in a time not exceeding this maximum
time limit.
N/A
Page 21 of 80 Report No. 3302407.50
IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
7.2.1.1.4 Independent power closing
A circuit-breaker having an independent power
closing operation can be assigned a rated shortcircuit
making capacity irrespective of the
conditions of power closing
N/A
Means for charging the operating mechanism, as
well as the closing control components, shall be
capable of operating in accordance with the
manufacturer’s specification
N/A
7.2.1.1.5 Stored energy closing
Capable ensuring closing of the circuit-breaker in
any condition between no-load and its rated
making capacity
N/A
- when the stored energy is retained within the
circuit-breaker, a device is provided which
indicates when the storing mechanism is fully
charged.
N/A
- means for charging the operating mechanism and
closing control components operates when
auxiliary supply voltage is between 85% and 110%
of the rated control supply voltage.
N/A
- not possible for the moving contacts to move
from the open position, unless the charge is
sufficient for satisfactory completion of the closing
operation.
N/A
- by manually operated circuit-breaker is the
direction of operation indicated.
(not for circuit-breaker with an independent manual
closing operation.)
N/A
- For trip free circuit-breaker it shall not be possible
to maintain the contacts in the touching or closed
position when the release is in the position to trip
the circuit-breaker.
N/A
Page 22 of 80 Report No. 3302407.50
IEC 60947-2
Clause Requirement + Test Result - Remark Verdict
TRF No. IEC60947_2F
7.2.1.2 Opening
7.2.1.2.1 Circuit-breakers which open automatically shall be trip-free and, unless otherwise
agreed between manufacturer and user, shall have their energy for the tripping
operation stored prior to the completion of the closing operation
7.2.1.2.2 Opening by undervoltage releases
7.2.1.3. a
part 1
Operating voltage
An under-voltage relay or release, when associated
with a switching device, shall operate to open the
equipment even on a slowly falling voltage within
the range between 70% and 35% of its rated
voltage
N/A
An under-voltage relay or release shall prevent the
closing of the equipment when the supply voltage
is below 35% of the rated voltage of the relay or
release; it shall permit closing of the equipment at
supply voltages equal to or above 85% of its rated
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