UL IEC 61010 2nd
to 3rd Edition
Correlation
An easy to use reference guide on changes
to UL IEC 61010 and the impact it will have.
As the certification
agency that writes the
standards for safety for
lab equipment, UL is here
to support you through
the transition from the
2nd to 3rd edition of
UL IEC 61010
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
Foreword
Requirements for test and measurement circuits were moved to the standard
IEC 61010-2-030.
None — explanatory
information only. See changes
from 2nd ed to IEC 61010-2030 below.
Foreword
The scope of the standard has been expanded to include all locations where these products may
be used, so that both professional and non-professional versions of these products are within the
scope.
Minor — scope extension
primarily based on new
particular standards that are
coming soon. e.g. Education.
1.1.1
Expanded locations (see above).
See above.
1.1.1 a)
Added power supplies for laboratory use in the scope of the standard.
None — explanatory
information only.
1.1.2
Equipment excluded from scope: Requirements reference added for IEC 61010-031 (Hand-held
probe assemblies) and IEC 61243-3 (Live working — voltage detectors — Part 3: Two-pole lowvoltage type). Removed IEC 60521.
None — explanatory
information only.
1.2.2
Aspects excluded from scope: Servicing (repair) and protection of servicing personnel including
note removed from the standard.
Major — requirements
for service and repair in
documentation are in clause
5.4.5 and risk assessment
Annex J.2.
1.4.1.f
Normal environmental conditions: applies to conditions of transient overvoltage up to
Overvoltage Category II. Wet locations are specifically mentioned as an extended environmental
condition.
None — explanatory
information only.
1.4.2. g)
Recognizes that there might be CAT III and CAT IV mains used to power products
Minor — adds Overvoltage
Categories to the 3rd
edition where previously
Measurement Categories were
used.
1.4.2.f
Wet locations are mentioned as an extended environmental condition.
None — explanatory
information only.
2
Normative References — Updated to reflect latest standards reference on
other clauses.
None — editorial change only.
3.1.1
FIXED EQUIPMENT: Standard reference changed from [IEV 826-07-07] to
[IEC 60050-826:2004, 826-16-07, modified].
None — editorial change only.
3.1.6
DIRECT PLUG-IN EQUIPMENT: NEW DEFINITION: equipment with a MAINS plug that is attached
to the equipment housing without the use of a MAINS supply cord so that the equipment is
supported by the MAINS socket-outlet.
Minor — term added for
mechanical stress testing in
clause 8.
3.2.1
TERMINAL: Standard reference changed from [IEV 151-01-03] to
[IEC 60050-151:2001, 151-12-12, modified].
None — editorial change only.
3.2.4
ENCLOSURE: added Note: ENCLOSURES may also provide protection against the spread of fire (see
9.3.2 c)).
None — explanatory
information only.
3.2.5
PROTECTIVE BARRIER: added the term ”PROTECTIVE” before the term BARRIER; added reference
to IEC 60050-195:1998; added to the note: it can be used alone or in conjunction with interlocking
device; modified the note that barriers can provide protection against the spread of fire.
None — explanatory
information only.
[1]
SUB CLAUSE: FOREWORD – 3.2.5
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
3.3
QUANTITIES: Title of this section changed from Electrical Quantities to just Quantities.
None — explanatory
information only.
3.3.1
RATED (value):Standard reference changed from IEV 151-04-03 to IEC 60050-151:2001, 151-16-08,
modified.
None — editorial change only.
3.3.2
RATING: Standard reference changed from IEV 151-04-04 to IEC 60050-151:2001, 151-16-11.
None — editorial change only.
3.3.3
WORKING VOLTAGE: Added voltage fluctuations as not considered to be part of the working
voltage.
None — clarification on
current practice.
3.4.1
TYPE TEST: Standard reference changed from IEV 151-04-15 to IEC 60050-151:2001, 151-16-16.
None — editorial change only.
3.4.2
ROUTINE TEST: rewording of definition.
None — editorial change only.
3.5.3
HAZARDOUS LIVE: Clarifies that hazardous live is for both normal and single
fault condition.
None — clarification on
current practice.
3.5.4
(2nd Ed)
HIGH INTEGRITY: Deleted term.
None — editorial change only.
3.5.4
MAINS: removed note: NOTE Some measuring circuits may also be connected to the MAINS for
measuring purposes.
Minor — clarification on
current practice.
3.5.5
MAINS CIRCUIT: Changed word "conductively” connected to “directly” connected and removed
the NOTE Measuring circuits and circuits that are inductively derived from MAINS CIRCUITS are
not MAINS CIRCUITS.
Minor — clarification on
current practice.
3.5.6
PROTECTIVE IMPEDANCE: rewording of definition.
None — editorial change only.
3.5.9
NORMAL CONDITION: Note was removed.
None — editorial change only.
3.5.10
SINGLE FAULT CONDITION: rewording of definition.
None — editorial change only.
3.5.11
OPERATOR: Note removed.
None — editorial change only.
3.5.12
RESPONSIBLE BODY: Removed “ensuring that operators are adequately trained”.
None — editorial change only.
3.5.14
REASONABLY FORESEEABLE MISUSE: NEW DEFINITION: “use of a product in a way not intended by
the supplier, but which may result from readily predictable human behavior” added for use with
new Risk Assessment requirements.
Minor — see Clause 17.
3.5.15
RISK: NEW DEFINITION: “combination of the probability of occurrence of harm and the severity of
that harm” added for use with new Risk Assessment requirements.
Minor — see Clause 17.
3.5.16
TOLERABLE RISK: NEW DEFINITION “RISK which is accepted in a given
context based on the current values of society “ added for use with new
Risk Assessment requirements.
Minor — see Clause 17.
3.5.17
OVERVOLTAGE CATEGORY: NEW DEFINITION: “numeral defining a TRANSIENT OVERVOLTAGE
condition (see Annex K)”.
Minor — see Annex K.
3.5.18
TRANSIENT OVERVOLTAGE NEW DEFINITION: “short duration overvoltage of a few milliseconds
or less, oscillatory or non-oscillatory, usually highly damped”; added reference to [IEC 60050-604,
Amendment 1:1998, 604-03-13]”.
Minor — clarifies definition in
accordance with the Standard
for International
Electrotechnical Vocabulary.
See Clause 6.7
on Insulation Requirements.
SUB CLAUSE: 3.3 – 3.5.18
[2]
Sub clause
Discussion
Impact
3.5.19
TEMPORARY OVERVOLTAGE NEW DEFINITION: “power frequency overvoltage of relatively long
duration”; added reference to [IEC 60050-604, Amendment 1:1998, 604-03-12].
Minor –clarifies definition
in accordance with the
Standard for International
Electrotechnical Vocabulary.
See Clause 6.7 on Insulation
Requirements.
3.6.1
BASIC INSULATION: Clarifies insulation for hazardous live parts; added reference to [IEC 60050195:1998, 195-06-06].
Minor — clarifies definition
in accordance with the
Standard for International
Electrotechnical Vocabulary.
3.6.2
SUPPLEMENTARY INSULATION: Added reference to IEC 60050-195:1998,
195-06-07, modified].
Minor — clarifies definition
in accordance with the
Standard for International
Electrotechnical Vocabulary.
3.6.3
DOUBLE INSULATION: Added reference to [IEC 60050-195:1998, 195-06-08].
Minor — clarifies definition
in accordance with the
Standard for International
Electrotechnical Vocabulary.
3.6.4
REINFORCED INSULATION: Added reference to [IEC 60050-195:1998,
195-06-09, modified].
Minor — clarifies definition
in accordance with the
Standard for International
Electrotechnical Vocabulary.
3.6.6
POLLUTION DEGREE: rewording of definition.
None — editorial change only.
3.6.9
POLLUTION DEGREE 3 : rewording of definition.
None — editorial change only.
3.6.10
POLLUTION DEGREE 4 : NEW DEFINITION: “continuous conductivity occurs due to conductive dust,
rain or other wet conditions”.
Minor — see Annex E.
3.6.12
CREEPAGE DISTANCE: Standard reference changed from IEV 151-03-37 to
IEC 60050-151:2001, 151-15-50.
None — editorial change only.
4.3.2.4
MAINS SUPPLY: Statement removed: Unless the equipment is specified for use only on a nonearthed MAINS supply, one pole of the reference test supply shall be at or near earth potential.
None
4.3.2.5
Removed “Unless the equipment is specified for use only on a non-earthed MAINS supply, one
pole of the reference test supply shall be at or near earth potential.”
None — editorial change only.
4.3.2.12
DUTY CYCLE: added Equipment for short-term or intermittent operation that develops significant
heat during the startup phase, and that relies on continued operation to dissipate that heat, shall
also be operated for the shortest RATED period followed by the shortest RATED recovery period.
Major — new requirement
in addition to the previously
existing duty cycle
requirement.
4.4.2.5
Added “One supply phase of any multi-phase motor shall be interrupted while the motor is
operating at its intended full load”.
Medium — common practice
for 2nd edition evaluations,
shall be checked during file
review.
4.4.2.10.d
added loss of cooling liquid shall be simulated.
None — correction of 2nd
edition error.
[3]
SUB CLAUSE: 3.5.19 – 4.4.2.10.d
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
4.4.2.14
Added Voltage Selector voltage mismatch test.
Medium — common practice
for 2nd edition evaluations,
shall be checked during file
review.
4.4.4.2
Reference to clause 10 for temperature limits of the enclosure and
easily touched parts.
None
5.1.3 c)
Added “The marked value shall not be less than 90 % of the maximum value when more than one
voltage range can be used but the maximum and minimum values do not differ by more than
20%”.
None — clarifies requirement.
Table 1
Symbols — IEC reference standards updated to include month and year of the publication.
None — editorial change only.
Table 1,
number 8
Removed Equipotentiality symbol.
None — editorial change only.
Table 1,
number 17
Added symbol 17 for ionizing radiation maximum value.
Minor — if it was applicable,
most manufacturers were using
this
symbol already.
5.1.5.1
General
Added requirement color red and coding of push-buttons and actuators of emergency stop
devices (reference IEC 60073).
Minor
5.1.5.2 c)
Removed reference to measuring circuits since these requirements are now in
IEC 61010-2-030.
None — editorial change only.
SUB CLAUSE: 4.4.2.14 – 5.1.5.2 c)
[4]
Sub clause
Discussion
Impact
5.1.5.1 e)
(2nd Ed)
REMOVED: e) ACCESSIBLE FUNCTIONAL EARTH TERMINALS connected to ACCESSIBLE conductive
parts. See symbol 8 of Table 1.
None — editorial change only.
5.1.5.2
Removed words “Measuring Circuit” from title of clause. Requirements are now in IEC 61010-2030.
None — editorial change only.
5.1.6
Requires that the off-position and optionally the on-position be marked as the disconnecting
device for a power supply switch or circuit breaker .
Minor — clarifies requirement.
Removed requirement that Symbols 8, 9 and 10 shall not be used for switches other than the
power supply switch.
Minor
5.1.7
Rewording of clause.
None — editorial change only.
5.1.8
Modified requirement to allow use of the “Attention — Consult Accompanying Documents”
symbol in lieu of marking with the minimum temperature rating.
Minor
5.4.1
General
Removed ”instructions for use.” This is covered in clause 5.4.4.
None — editorial change only.
Removed: “measurement category” definition since this is now part of
IEC 61010-2-030.
None — editorial change only.
Added risk mitigation information.
Medium — includes all safety
information.
Added note that markings and text are equivalent to documentation.
Minor — clarifies current
practice.
Added instructions for lifting and carrying.
Medium — may required
manual changes if applicable.
Removed “ CAT I” warning information; replaced with need for risk
mitigation information.
Medium
Added option to have printed material available in electronic format unless safety necessitates it
be provided in print.
Minor — clarifies current
practice.
5.4.2 b)
Added reference to clause 6.6.1 a).
None — editorial change only.
5.4.2 c)
Added reference to clause 6.6.1 b).
None — editorial change only.
5.4.2 f)
Added requirements for equipment with an impact RATING less than 5 J.
See Clause 8.1 d)
Medium — may required
manual changes if applicable.
5.4.3 g)
(2nd Ed)
Removed sound power level documentation requirement.
None — editorial change only.
5.4.3 i)
(2nd Ed)
Removed measuring circuit documentation information since this is covered in IEC 61010-2-030.
None — editorial change only.
5.4.3
Added a note recommending that the installation documentation state the system assembler is
responsible for the safety of the system.
Minor — explanatory
information only.
5.4.4 j)
Added RISKS of burns from surfaces permitted to exceed the temperature limits of clause 10.1
must be added to documentation.
Medium — may required
manual changes if applicable.
5.4.4
Added requirement for 60950 equipment used with 61010 equipment with liquid hazards exist,
additional instructions must be provided. e.g. 60950 power supply with Lab equipment and there
are liquids present.
Medium — may required
manual changes if applicable.
[5]
SUB CLAUSE: 5.1.5.1 e) (2nd Ed) – 5.4.4
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
5.4.5
Added “service” to equipment maintenance requirements.
Medium — clarifies
requirement.
Added instructions on proper replacement of power supply cords.
Medium — clarifies
requirement.
Added instructions for service personnel must be included in documentation.
Minor — clarifies requirement.
5.4.6
Added requirements in the documentation for special ambient or application conditions and
integration into systems must be described.
Medium — May required
manual changes as applicable.
6.1.1
Revised to add information from clause 6.3 of the 2nd edition.
None — editorial change only.
6.1.2
Removed locking and screw type measuring terminals since this is covered in IEC 61010-2-030.
None — editorial change only.
6.2.1
Removed 1 kV accessibility requirement.
Minor
6.2.3
Noted added to provide rationale for exception.
None — explanatory
information only.
6.4.1
Solid insulation removed due to requirements in 6.7. Also some reorganization done for clarity.
None — editorial change only.
6.4.3
Requirements added for impedance used as primary protection
Medium — new requirement.
6.4.4
Requirements added for impedance used as primary means of protection.
Major — will require testing.
6.5.1 and
Fig 4
Added to better describe Single Fault Conditions requirements.
None
6.5.2.2
Note on color identification removed.
Medium — will have to be
added as a National Deviation .
6.5.2.3 k)
This requirement has previously existed but it was not in this subclause.
Medium — new item, with
potentially new evaluation
requirement.
6.5.2.4
Added requirement for bonding impedance. Now also need 0.2 ohms for equipment with a non
detachable power supply cord.
Major — will require testing.
6.5.2.6
Added new requirements for protective bonding screen. New test like bonding impedances. Also,
solid insulation transformer requirements removed due to new requirements in 6.7.
Major — will require testing.
6.5.4
High-integrity resistors and capacitors are now required to be rated for twice the working voltage.
Major — new requirement.
6.5.6
New requirement for current and voltage limiting devices. Will require measurement and
verification of creepage and clearance distances.
Major — will require testing.
6.6.2
Removed 1kV accessibility requirement. Now in IEC 61010-2-030
None
6.7.1.1
General
Serves as an explanation of clearance, creepage and solid insulations, electric stresses originating
on mains and the interaction between those and insulations.
None — explanatory
information only.
6.7.1.4
Added explanation of solid insulation.
None — explanatory
information only.
6.7.1.5
Requirements for insulation by type of circuit can be found in 6.7.2, 6.7.3 and Annex K.
None — explanatory
information only.
SUB CLAUSE: 5.4.5 – 6.7.1.5
[6]
Sub clause
Discussion
Impact
6.7.2.1 and
Table 4
Simplified Table 4 with only two voltage categories <= 150 and 150 V and <= 300V. Increases the
clearance and creepage requirements for any mains that is 100V or less. Requirements for Voltages
>300 V moved to Annex K. which adds requirements for 600V-1200V. Also adds a reference to new
Annex H for conformal coatings. Annex K also used for all insulation requirements for voltages in
excess of 300v and all Cat III and Cat IV overvoltage locations.
Major — see Annex K below
for details.
6.7.2.2 and
6.7.2.2.1
Added new requirements to evaluate solid insulations. Solid insulation used in mains must pass
the voltage test in Table 5 (new) and meet the requirements referenced in a) thru d). Also adds in a
change in voltage to be applied for the voltage test. AC mains must be tested using the AC test and
DC mains must be tested using the DC test.
Major — for many solid
insulations this will be a new
test and evaluation.
6.7.2.2.2
Added requirements for molded and potted parts. Conductors located between same two layers
molded together shall be separated by minimum 0.4 mm.
Major — will require
evaluation.
6.7.2.2.3
Added requirements for inner insulating layers of printed wiring boards. Conductors located
between same two layers molded together shall be separated by minimum 0.4 mm. Additional
requirements for reinforced insulation.
Major — in the 2nd edition
these were exempted from
creepage and clearance
requirements.
6.7.2.2.4
Added special requirements for thin film insulation. Conductors located between same two layers
molded together shall be separated by distances given in 6.7.2.1 for clearance and creepage. Also
must comply with additional requirements for reinforced insulation same as above.
Major — in the 2nd edition
these were exempted from
creepage and clearance
requirements.
6.7.3
Terminology changed to secondary circuits derived from mains.
None — editorial change only.
6.7.3.2
Clearances can meet Table 6 (revised) or pass the voltage test of 6.8 using the voltages in Table 6.
Minor — Table 6 voltages vary
in many cases to those in the
2nd edition.
6.7.3.3
Creepage distances must meet Table 7.
None — values the same as
the 2nd edition.
6.7.3.4.1
General
Solid insulation in secondary circuits. Needs 2 tests if voltage is greater than 300V. The voltage test
of 6.8.3.1 for 5 sec. Values for basic or supplementary or 1.6 times the value for reinforced and for
>300V the 1 minute voltage test of 6.8.3.1 with a test voltage of 1.5 times the working voltage for
basic or supplementary and twice the working voltage for reinforced insulation. Also references
provided for other requirements based on material use.
Major — will require testing.
6.7.3.4.2
Molded and potted parts in secondary circuits are to be separated by values given in Table 8. Actual
measurement or manufacturers specifications are acceptable.
Major — will require
evaluation.
6.7.3.4.3
Inner insulating layers of printed wiring boards in secondary circuits are to be separated by values
given in Table 8. Actual measurement or manufacturers specifications are acceptable.
Major — will require
evaluation.
6.7.3.4.4
Thin film insulation used in secondary circuits are to be separated by the values given in Table 6.
Conductors located between same two layers molded together shall be separated by distances
given in 6.7.3.2 and 6.7.3.3 for clearance and creepage. Additional requirements for reinforced
insulation.
Major — will require
evaluation.
6.8
Voltage tests reorganized. All test voltages are in 6.7 and procedures are in 6.8
None — editorial change only.
6.8.1
Added the distances that will prevent flashover between foil and TERMINALS in Table 9.
Minor
6.8.2
Change humidity slightly for 92.5 C +/- 2.5 C TO 93 C +/- 3 C.
Minor
6.9
Added item d) that clearance and creepage distances between the enclosure and hazardous parts
shall not be reduced below basic by loosening of parts or wires.
Minor — clarification on
current practice.
[7]
SUB CLAUSE: 6.7.2.1 and Table 4 – 6.9
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
6.9.3
Clarification on use of green/yellow insulation, enclosure requirements moved to 6.4.2 and overrange requirements moved to IEC 61010-2-030.
None — editorial change only.
6.10.2.2
Conformity statement revised to add voltage tests between protective conductor and line and
neutral conductors.
Major — will require testing.
6.11.3.2
Hazards arising from function removed.
None — editorial change only.
7.1
Added additional mechanical hazards that need to be addressed. A list of mechanical hazards
that are addressed by the standard is provided. More details on each hazard provided in subclauses. The previous note from the 2nd edition about sharp edges was added as a requirement.
(The words ”should be” changed to ”shall be”). In addition, new force and pressure requirements
were added. New note clarifies that multi-unit devices are treated individually unless they are
supported or attached to one another.
None — editorial change only.
See details below.
7.2
Sharp edges is now a requirement. Was previously a note under 7.1 General. References UL
1439, Tests for Sharpness of Edges on Equipment, as an acceptable procedure in determining
compliance with this clause.
Minor — reflects current
practice.
7.3.1
Identifies tolerable levels for moving parts hazards by compliance with force, pressure and gap
limitations (see 7.3.4 and 7.3.5) and allows use of risk assessment when these levels are not met
(see 7.3.3).
Major — will require
evaluation of risk assessment
procedures.
7.3.3
Added Risk Assessment Process. Hazards not complying with the new force, pressure and gap
limitations must use Risk Assessment procedures to evaluate acceptability of these hazards. The
hazards are evaluated for severity, probability of exposure and possibility of avoidance. Based on
the risk assessment, either low level, moderate or stringent protective measures must be applied.
Major — will require
evaluation of risk assessment
procedures.
7.3.4
Force and Pressure requirements added. Maximum continuous contact pressure of 50N/cm2 and
max. force of 150 N. Maximum temporary force for body areas of at least 3 cm2 is 250 N for max
duration of 0.75s.
Major — aligns up with similar
requirements from other
IEC standards.
7.3.5.1
Added gap limitations for moving parts where access is normally allowed. No similar requirements
provided in 2nd edition. Table added with body part and minimum gap dimension requirements.
Values stated are for adults. Equipment designed for children shall be considered smaller
dimensions.
Major — aligns up with similar
requirements from other
IEC standards.
7.3.5.2
Added gap limitations for moving parts where access is not normally allowed. Table added with
maximum gap dimensions.
Major — will require
evaluation.
7.4
Revised requirements for castors and foot supports. Each castor and foot support must support
loads of 4 times the normal load or test the specific castor or foot sport with the greatest
individual load singly.
Major — will require testing.
7.5.2
New requirement for removing one screw from the handle unless it is secured against loosening
and be subjected to 4 X equipment weight.
Major — new requirement.
7.5.3
New requirements for lifting devices and supporting parts under the provisions for lifting and
carrying clause. Parts must be rated for maximum load or tested to support four times their
maximum static load.
Major — will require
evaluation.
7.6
Added additional requirement for wall mounts with more than on fastener.
Adds additional test to remove one fastener when more than one is employed
in the device but reduces weight requirement from four to two times weight
of the equipment.
Major — will require testing.
7.7
Note added to clarify that resistance to mechanical stresses (clause 8) does not address expelled
parts from inside the equipment. Those hazards are to be addressed under 7.7.
Minor
SUB CLAUSE: 6.9.3 – 8
[8]
Sub clause
Discussion
Impact
8
Clause title change to “Resistance to mechanical stresses”.
None — editorial change only.
8.1
Added requirements for energy protection levels below 5 J but not less than 1 J by use of risk
assessment.
Minor — will require testing.
8 (2nd Ed)
Removed paragraph regarding damage to finish, small dents, etc .
None — editorial change only.
8.1 item 2)
Alternative impact test using IEC 62262 (for equipment other than hand-held or direct plug-in)
where the energy level is not 5 J.
Minor — testing required for
future evaluations.
8.1
Enclosures with a rating of greater than IK08 per IEC 62262 are exempt from the impact test.
Minor — relaxes requirement
for some constructions.
8.1
Added voltage tests following enclosure rigidity tests.
Medium — implied in the 2nd
edition subclause 4.2.
8.1 i)
Added requirement that there have been no leaks of corrosive or harmful substances following
the enclosure rigidity tests.
Minor
[9]
SUB CLAUSE: 8.1 – 8.1 iv)
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
8.1 iv)
Added the insulation of internal wiring remains undamaged.
None — clarification on
current practice.
8.2.2
Revised sub-clause title from “Dynamic Test” to “Impact Test”.
None — editorial change only.
Removed panel meters and components or windows not forming part of the enclosure from the
exceptions to the impact test. Already implied in 8.1.
None — editorial change only.
Added criteria for defining a sufficiently rigid surface as displacement less than or equal to 0.1 mm
under the effect of an impact directly applied and whose energy corresponds to the degree of
protection.
Minor — clarification on
requirement.
Added ability to test empty enclosures for impact tests.
Medium — relaxes
requirement for some
constructions.
Added ability to use a new enclosure for impact tests if damaged from previous passing tests.
Medium — relaxes
requirement for some
constructions.
Revised requirements for FIXED EQUIPMENT, each test point is subjected to just one impact, with
no maximum number of test points indicated. Previously, maximum of 3 test points was allowed
in 8.1.2.
Major — will require testing.
Tests are no longer called corner drop and face drop. Specifications of test dependent on the
weight of the equipment. Fixed equipment could be major if we have not tested worst case.
Medium — relaxes
requirement for some
constructions.
Height of test set up based on energy level of equipment, allows reduced test height conditions
for lower energy level devices.
Major — relaxes requirement
for some constructions.
8.2.1.1
Wooden studs used in test set up for impact test were removed.
Minor
Figure 10
Renamed Figure 4 of the 2nd edition.
None — editorial change only.
Table 15
New table for test heights.
Major — clarification only
9.1 —
Figure 11
Reference to Clause 9.6 for all paths was added/implemented in the Flowchart.
None — explanatory
information only.
9.3.2.a and
c.2
Flammability rating and testing refer to IEC 60695-11-10 (instead of IEC 60707). Ratings are
harmonized to UL 94.
None
9.3.2 b
Wires shall be fire retardant. Testing should be conducted in accordance to IEC 60332-1-2 or IEC
60332-2-2 depending on the wire size.
None — as usually UL 2556
VW-1 UL approved material
is used and deemed to be
appropriate as stated in
Note 2.
9.3
Figure 12
"Y ≥ twice X but never less than 25 mm" instead of "Y = twice X but never less than 25 mm.
None — clarification of
requirement.
9.4
Table 17
Limits of maximum available current revised to more logical values without steps at certain
voltage values as in previous editions (e.g. 30V) more stringent requirements from 18.7 to 30 V ac/
dc or relaxation below 12.5V ac/dc.
Major or Minor — depending
on the voltage used.
9.4
Table 18
Values for overcurrent protection devices revised to more logical values without steps at certain
voltage values as in previous editions similar to above.
Major or Minor — depending
on the voltage used.
SUB CLAUSE: 8.2.2 – 9.4 Table 18
[ 10 ]
Sub clause
Discussion
Impact
9.6.1
The supply side of an overcurrent protective device shall be at least basic insulation between
opposite polarity (L to L, L to N), conformity of solid insulation is checked by an AC-dielectric test.
Major — new requirement,
additional testing of solid
insulation required. Testing
MAY be required.
10.1
Temperature limits for easily touched surfaces were modified with more stringent requirements.
Allows temperatures of easily touched surfaces to exceed the limits in Table 19 if the maximum
rated ambient is higher than 40 C. They are allowed to exceed the value only by the amount the
ambient exceeds 40C.
Major — must comply with
new limits if applicable.
Equipment heated by its environment marking requirement change from 2nd Ed. Equipment
heated by its environment to temperatures exceeding do not need the "caution, hot surface"
symbol.
Minor — relaxes requirement
for some constructions.
Distinguished outer surface enclosure requirements as having unintentional contact versus knobs
and handles as normal use contact.
Minor — clarifies requirement.
Redefined types of metals and non-metals and modified their temperature limits based on new
definition. Uncoated/anodized metals went from 70C to 65C and plastic limits went from 80C
to 85C. Under knobs and handles, Glass and Ceramics went from 70C to 65C. Non-metallic parts
went from 85C to 70C and the time duration defined as 1 to 4 sec. Note added about EN 563:
Safety of machinery — Temperatures of touchable surfaces, which gives information about the
effect of the duration of contact.
Major — must comply with
new limits if applicable.
11.2, 11.3,
11.4, 11.6
Conformity statement revised to align with new 6.7and 6.8 sub-clauses. Some voltage test values
may change a bit due to the insulation being evaluated.
Minor
11.5
Reference added for battery tests.
None — explanatory
information only.
11.7.2
Leakage and rupture at high-pressure requirements changed. Figure 9 was removed and multiplier
factors of 1.5 used for testing for leakage and 2.0
used for burst.
Major — may require retesting
from 2nd Ed.
11.7.3
Reference now added to 11.7.2 to determine low pressure values.
None — clarification on
current practice.
12.2.1.2
Subclause now separated into two: one for products intended to emit radiation and one for
equipment that emits stray radiation. Requirement for measured radiation for equipment
intended to emit radiation now measured at 50 mm looking for 5 uSv. If the 5 uSv value is
exceeded then equipment shall be marked with special markings.
Minor — relaxes requirement.
12.2.1.3
New subclause for products emitting stray radiation only.
None — same as the
requirement in the 2nd Ed.
12.3
Note added to show example of the effects of UV radiation. The conformity statement modified
to say by inspection and through evaluation of Risk assessment documentation.
Medium — Evaluation of Risk
Assessment procedures may
be required.
13.2.4
Subclause deleted.
None — editorial change only.
14.7
Printed circuit boards only used with limited energy circuits must not comply with the V-1 or
better requirement.
Minor — 2nd edition only
specifies thin-film flexible
printed wiring boards as an
exception, clarification. This is
a relaxation.
14.8
Test values for Transient overvoltage limiting devices for Overvoltage Categories III and IV were
moved to Annex K.4.
None — editorial change only.
Table 19
[ 11 ]
SUB CLAUSE: 9.6.1 – 14.8
Changes made from IEC 61010-1 2nd to 3rd edition
Sub clause
Discussion
Impact
14.6
(2nd Ed)
High integrity component requirements removed. Alternate requirements can be found in 6.5.4.
None — editorial change only.
15.2
Revised requirement where interlock requires reactivation without the use of a tool.
None — clarification of
requirement.
15.3
Removed reference to High Integrity Component.
None — editorial change only.
16
Clause 16 changed from test and measurement equipment to Application Hazards. Measurement
and test circuit requirements can be found in IEC 61010-2-030.
None — editorial change only.
16.1
New requirement for hazards for controls that are used in a way not attended and not described in
the instructions. Risk assessment is used.
Major — see clause 17 for
application of requirement.
16.2
New requirement for ergonomic apects that can cause a Hazard. Risk assessment must be applied.
Major — see clause 17 for
application of requirement.
SUB CLAUSE: 14.6 (2nd Ed) – 16.2
[ 12 ]
Sub clause
Discussion
Impact
17
All new clauses added to evaluate additional hazards that are not addressed by the standard. IEC
recognizes that standards cannot always anticipate or develop requirements to address every
potential hazard for every type of device capable of being evaluated by the standard. The standards
development process always lags new and emerging technology. Using Risk Assessment allows
manufacturers to identify and control risks in their products as they design the product. The Risk
Assessment process must consist of risk analysis, risk evaluation and risk reduction. Risks that do
remain after this Risk Assessment process, must provide adequate information to mitigate these
risks in the instructions to the user.
Major
17 — Note
Annex J provides guidance on how to conduct the Risk Assessment process. References to Risk
Assessment procedures contained in other standards such as ISO 14971, SEMI S10-1296, IEC 61508,
ISO 14121-1, and ANSI B11.TR3.
Major — see Annex J for more
detail.
Annex A,
Figure A.1,
A.2, A.3, A4
Added tolerances for the components used in the measurement circuit.
None — clarification of
requirement.
Annex C
Reworded requirements for measurement of creepage and clearance distances.
None — editorial change only.
Annex D,
Part b)
Reference to N circuit replaced with TA and TN circuit.
None — editorial change only.
Annex E
Requirements now more severe even though informative. Guidelines for Reduction of pollution
degrees (Table E.2) is determined by equipment environmental situations (Table E.1). Coating moved
to Annex H.
Minor — informative
Annex F,
F3.1
Added more detailed description for conducting dielectric test and Table F.1 with the test voltage
values.
None — clarification of
requirement.
Annex F,
F3.2
Added voltage test method for Mains Circuits with transient voltage limiting devices in accordance
with Clause 14.8. Value shall be 0.9 times the clamping voltage of such devices.
Minor — a relaxation before
the exception.
Annex F, F.4
Floating circuits dielectric test shall be conducted at least with 500Vdc or 350Vac
Minor — requirement exists in
2nd edition without minimum
voltage. Could be major if
tests already done at a lower
voltage.
Annex H
Added normative Annex that clarifies requirements for conformal coatings. Applies requirements
from IEC60664. A very important note indicates that conformal coatings that meet the
requirements of ANSI/UL 746E are considered to meet these requirements. Requirement taken from
sub-clause 6.7.1.2 and 6.7.1.2DV of 2nd Ed.
None — reflects current
practice.
Annex I
Added informative Annex to clarify line to neutral voltages in determining clearance, creepage and
solid insulation requirements for various Mains Systems.
None — explanatory
information only.
Annex J
Added informative Annex that provides guidance on how to conduct a risk assessment process
based on ISO/IEC Guide 51 (1999). Provides risk assessment procedures, method for achieving
tolerable risks and how to evaluate hazards by severity of harm, probability of harm and risk
category. Several tables were provided to clarify process.
Major — new requirement.
Annex K
New normative Annex covers insulation requirements not covered by Clause 6.7. Provides equivalent
requirements for Overvoltage Categories III and IV (and Cat II greater than 300V).
Major — new requirement if
applicable.
[ 13 ]
SUB CLAUSE: 17 – Annex K
Appendix A: Changes made from UL 61010-1 2nd edition to
IEC 61010-2-030 1st edition (special requirements for testing and measuring circuits)
61010-2-030
Sub-clause
Discussion
Impact
General
Note all other clauses of IEC 61010-1 3rd edition apply as written.
None — explanatory
information only.
1.1.1
Scope of this standard covers testing and measuring circuits which are connected for test
or measurement purposes to devices or circuits outside the measurement equipment itself.
Separates the requirements of the circuits from the requirements for the entire device which
is still covered by IEC 61010-1 Base Standard.
None — explanatory
Information only.
1.1.1
The existence of these circuits in equipment requires additional protective means between
the circuit and an operator.
None — see clause 6.6 for
specific requirements.
2
Entire clause of part 1 applies.
None
3
Entire clause of part 1 applies with addition as noted below.
None
3.5.101
Added new definition: MEASUREMENT CATEGORY — classification of testing and measuring
circuits according to the type of MAINS CIRCUITS to which they are intended to be connected.
None — clarification only.
4
Entire clause of part 1 applies.
None
5
Entire clause of part 1 applies except as follows.
None
5.1.5.101.4 c)
No marking requirement if it is obvious that the levels are below 6.3.1 (33Vrms/70Vdc for
3rd edition).
Major — relaxation of
requirement. Can be major
for IEC investigations as the
reference to 6.3.1 indicates
33 V as minimum shock
hazard while in NA it’s 30 V.
A 33 v scale max in IEC area
would not meet NA shock
definition in 6.1.
6
Entire clause of part 1 applies except as follows.
None
6.6.101
Separation requirements for unmated measuring circuit terminals that can become hazardous live when maximum rated voltage is applied. Creepage and Clearance distances are
given in Table 1.
Major — will require
evaluation.
6.6.102
Devices connected to specialized measuring circuit terminals (e.g. semiconductor measuring
functions) shall not be both accessible and hazardous live in normal and single fault condition.
applies also when other terminals are energized.
Major — will require
evaluation.
7
Entire clause of part 1 applies.
None
8
Entire clause of part 1 applies.
None
9
Entire clause of part 1 applies.
None
10
Entire clause of part 1 applies.
None
11
Entire clause of part 1 applies.
None
12
Entire clause of part 1 applies.
None
13
Entire clause of part 1 applies.
None
14
Entire clause of part 1 applies except as follows.
None
14
Revised the transient overvoltage limiting devices test in Clause 14.9 from 2nd edition Relaxation in test requirement from 10 impulses to 5 impulses.
Major — relaxation in
requirement.
61010-2-030 SUB CLAUSE: General – 14
[ 14 ]
61010-2-030
Sub-clause
Discussion
Impact
15
Entire clause of part 1 applies.
None
16
Entire clause of part 1 applies.
None
17
Entire clause of part 1 applies.
None
101.1
New requirements for measuring circuits. This replaces the original current interruption and mismatch testing from the 2nd edition and incorporates requirements which will help eliminate the
need for the Canadian only national difference.
None — explanatory
information only.
101.3.1
Added additional protection requirements for the mismatch test.
None — explanatory
information only.
101.3.2
Expands requirements from Clause 9.5 of 2nd edition for a certified overcurrent protective
device that is used to terminate the multifunction/overrange test.
(Requirements to be added in proposed 2-033 standard for multimeters also).
Major — will require
evaluation if applicable.
101.3.3
Added requirements for an uncertified current limitation device or impedance when used
to terminate the mismatch test. (Requirements to be added to proposed 2-033 standard for
multimeters also.)
Major — will require
evaluation including testing.
101.3.4
Specifies test leads requirements for doing the mismatch tests of clause 101. Because of the
variability of leads that can be used with measuring devices, it was decided to use a standardized test lead for this testing. The only exception if a device has permanently connected leads.
Major — new requirement
may require testing and
new test equipment
Annexes
All annexes of part 1 apply except as follows.
None — explanatory
information only.
Annex K
Provides insulation requirements for measuring circuits similar to those in
part 1 standard.
Major — will require
evaluation, if applicable.
Annex AA
Added normative annex that elaborates on requirements for measurement
categories taken from Clause 6.7.4 of the 2nd edition.
None
Annex BB
Added informative annex that provides guidance on hazards that can exist with measurement equipment.
None — explanatory
information only.
[ 15 ]
61010-2-030 SUB CLAUSE: 15 – Annex BB
Index of common terms and vocabulary
A
ANSI B11.TR3 // 13
L
lifting devices // 8
B
basic insulation // 3, 11
battery // 11
M
mains // 1, 2, 3, 6, 7, 10, 13, 14
maintenance // 6
measuring circuits // 2, 4, 14, 15
mechanical // 1, 8, 9
mechanical hazards // 8
metals // 11
molded // 7
moving parts // 8
C
castor // 8
children // 8
clearance // 6, 7, 13 ,14
conductors // 7, 8
creepage // 3, 6, 7, 13, 14
D
double insulation // 3
E
emergency stop devices // 4
enclosure // 1, 4, 7, 9, 10
enclosure requirements // 8, 11
environmental // 1, 13
F
fire // 1, 10
flammability rating // 10
H
harm // 2, 9, 13
hazardous live // 2, 3, 14
humidity // 7
I
IEC 60050-151 // 2, 3
IEC 60050-195 // 1, 3
IEC 60521 // 1
IEC 61010-031 // 1
IEC 61010-2-030 // 1, 4, 5, 6, 8, 12, 14
IEC 61243-3 // 1
IEC 60695-11-10 // 10
impact rating // 5
impedance // 2, 6, 15
insulation // 2, 3, 6, 7, 8, 10, 11, 13, 15
interlocking device // 1
ionizing radiation // 4
ISO 14121-1 // 13
ISO 14971 // 13
ISO/IEC Guide 51 // 13
N
non-metals // 11
normal condition // 2
O
oscillatory // 2
overvoltage // 1, 2, 3, 7, 11, 13, 14
P
pollution degree // 3, 13
potted // 7
power frequency overvoltage // 3
primary protection // 6
printed wiring boards // 7, 11
R
radiation // 4, 11
reasonably foreseeable misuse // 2
reinforced insulation // 3, 7
risk // 1, 2, 5 ,8, 9, 11, 12, 13
risk assessment // 1, 2, 8, 9, 11, 12, 13
S
scope // 1, 14
SEMI S10-1296 // 13
service // 1, 6
severity // 2, 8, 13
single fault condition // 2, 6, 14
solid insulation // 6, 7, 11, 13
supplementary // 3, 7
supplementary insulation // 3
symbol // 4, 5, 11
[ 16 ]
T
temperature // 4, 5, 11
test and measurement // 1, 12
test voltages // 7
transformer // 6
transient overvoltage // 1, 2, 11, 14
U
UL 1439 // 8
UL 2556 // XX
V
voltage // 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 13, 14
W
wet conditions // 3
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