AS/NZS 62841.4.4:2021 (Includes IEC Text)
Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 4.4: Particular requirements for lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws
AS/NZS 62841.4.4:2021 applies to hand-held and walk-behind lawn trimmers and lawn edge trimmers, used by a standing operator for cutting grass, weeds or similar soft vegetation, and grass trimmers, brush cutters and brush saws used by a standing operator for cutting grass, weeds, brush, bushes, saplings and similar vegetation. AS/NZS 62841.4.4:2021 will supersede AS/NZS 60335.2.91:2008 on 26 November 2024. During this period AS/NZS 60335.2.91:2008 will also remain current. Regulatory authorities that reference this Standard in regulation may apply these requirements at a different time. Users of this Standard should consult with these authorities to confirm their requirements.
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Insert from: "15A3.pdf"
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General conditions for the tests
6 Radiation, toxicity and similar hazards
7 Classification
8 Marking and instructions
8.2.101 Additional safety markings
8.2.101.1 General
8.14.1.101 Lawn trimmer and lawn edge trimmer safety warnings
8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
8.14.1.103 Blade thrust causes and related warnings
9 Protection against access to live parts
10 Starting
11 Input and current
12 Heating
13 Resistance to heat and fire
14 Moisture resistance
15 Resistance to rusting
16 Overload protection of transformers and associated circuits
17 Endurance
18 Abnormal operation
19 Mechanical hazards
19.101 Guarding of cutting means and cutting accessories
19.101.1 Lawn trimmers
19.101.1.1 General
19.101.2 Lawn edge trimmers
19.101.3 Grass trimmers, brush cutters and brush saws
19.101.4 Guard requirements
19.102 Handles
19.102.1 General
19.102.1.1 Lawn trimmers and lawn edge trimmers
19.102.1.2 Grass trimmers, brush cutters and brush saws
19.102.2 Dimensions of bail or closed handles
19.102.3 Dimensions of straight handles supported centrally (T–type)
19.103 Barrier and distance to cutting accessory
19.104 Thrown objects test
19.105 Telescopic shafts
19.106 Grass catcher and guards
20 Mechanical strength
20.101 Strength of lawn trimmers, lawn edge trimmers and grass trimmers
20.101.1 General
20.101.2 Cutting means guard drop test
20.101.4 Strength of the cutting head
20.101.5 Mechanical strength of grass catchers
20.101.6 Mechanical strength of non-metallic pivoting cutters
20.102 Strength of brush cutters and brush saws
20.102.1 General
20.102.2 Cutting accessory guard strength
20.102.3 Cutting accessory guard rigidity
20.102.4 Strength of cutting accessory
21 Construction
21.18.101 Inadvertent starting prevention
21.18.102 Operator presence sensor
21.18.103 Reverse rotation selector
21.101 Lawn trimmer and lawn edge trimmer cutting elements
21.102 Lawn trimmer and lawn edge trimmer cutting elements
21.103 Lawn edge trimmer cutting head ground contact
21.104 Cutting head and cutting accessory retention
21.105 Grass trimmer cutting means
21.106 Shoulder harness
21.107 Balance
21.108 Cutting accessory cover
22 Internal wiring
23 Components
24 Supply connection and external flexible cords
25 Terminals for external conductors
26 Provision for earthing
27 Screws and connections
28 Creepage distances, clearances and distances through insulation
Annexes
Annex I (informative) Measurement of noise and vibration emissions
I.2 Noise test code (grade 2)
I.2.2 Sound power level determination
I.2.2.1 General
I.2.2.4 Lawn and garden machinery
I.2.2.101 Requirements for an artificial surface
I.2.2.102 Requirements for a natural ground surface
I.2.3 Emission sound pressure level determination
I.2.3.3 Lawn and garden machinery
I.2.4 Installation and mounting conditions of the power tools during noise tests
I.2.5 Operating conditions
I.3 Vibration
I.3.3.2 Location of measurement
I.3.5.2 Attachment, workpiece and task
I.3.5.3 Operating conditions
I.3.6.1 Reported vibration values
I.3.6.2 Declaration of the vibration total value
Annex K (normative) Battery tools and battery packs
K.1 Scope
K.3 Terms and definitions
K.8.14.1.101 Lawn trimmer and lawn edge trimmer safety warnings
K.8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
K.11 Input and current
K.14 Moisture resistance
K.21.107 Balance
K.21.302 Machines with integral batteries
K.21.302.2 Disabling device
K.21.302.2.1 General
K.21.302.2.2 Removable disabling device
K.21.302.2.3 Code protected disabling device
K.24 Supply connection and external flexible cords
K.28 Creepage distances, clearances and distances through insulation
Annex L (normative) Battery tools and battery packs provided with mains connection or non-isolated sources
L.1 Scope
L.8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
L.21.302 Machines with integral batteries
L.21.302.2 Disabling device
L.21.302.2.1 General
L.21.302.2.2 Removable disabling device
L.21.302.2.3 Code protected disabling device
Annex AA (normative) Safety signs which may be used on machines
Annex BB (normative) Thrown objects test for grass trimmers, brush cutters and brush saws
BB.1 Test stand
BB.2 Test conditions
BB.3 Penetration wall
BB.4 Test pieces
BB.5 Procedure
BB.6 Inspection of the cutting means or cutting accessory
BB.7 Result
Annex CC (normative) Impact test for brush cutter and brush saw cutting accessories and grass trimmer cutting means
Annex DD (informative) Example of a material and construction fulfilling the requirements for an artificial surface
DD.1 Material
DD.2 Construction
Annex EE (informative) Summary of characteristics for lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws
Bibliography
Previous versions
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Insert from: "15A3.pdf"
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General conditions for the tests
6 Radiation, toxicity and similar hazards
7 Classification
8 Marking and instructions
8.2.101 Additional safety markings
8.2.101.1 General
8.14.1.101 Lawn trimmer and lawn edge trimmer safety warnings
8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
8.14.1.103 Blade thrust causes and related warnings
9 Protection against access to live parts
10 Starting
11 Input and current
12 Heating
13 Resistance to heat and fire
14 Moisture resistance
15 Resistance to rusting
16 Overload protection of transformers and associated circuits
17 Endurance
18 Abnormal operation
19 Mechanical hazards
19.101 Guarding of cutting means and cutting accessories
19.101.1 Lawn trimmers
19.101.1.1 General
19.101.2 Lawn edge trimmers
19.101.3 Grass trimmers, brush cutters and brush saws
19.101.4 Guard requirements
19.102 Handles
19.102.1 General
19.102.1.1 Lawn trimmers and lawn edge trimmers
19.102.1.2 Grass trimmers, brush cutters and brush saws
19.102.2 Dimensions of bail or closed handles
19.102.3 Dimensions of straight handles supported centrally (T–type)
19.103 Barrier and distance to cutting accessory
19.104 Thrown objects test
19.105 Telescopic shafts
19.106 Grass catcher and guards
20 Mechanical strength
20.101 Strength of lawn trimmers, lawn edge trimmers and grass trimmers
20.101.1 General
20.101.2 Cutting means guard drop test
20.101.4 Strength of the cutting head
20.101.5 Mechanical strength of grass catchers
20.101.6 Mechanical strength of non-metallic pivoting cutters
20.102 Strength of brush cutters and brush saws
20.102.1 General
20.102.2 Cutting accessory guard strength
20.102.3 Cutting accessory guard rigidity
20.102.4 Strength of cutting accessory
21 Construction
21.18.101 Inadvertent starting prevention
21.18.102 Operator presence sensor
21.18.103 Reverse rotation selector
21.101 Lawn trimmer and lawn edge trimmer cutting elements
21.102 Lawn trimmer and lawn edge trimmer cutting elements
21.103 Lawn edge trimmer cutting head ground contact
21.104 Cutting head and cutting accessory retention
21.105 Grass trimmer cutting means
21.106 Shoulder harness
21.107 Balance
21.108 Cutting accessory cover
22 Internal wiring
23 Components
24 Supply connection and external flexible cords
25 Terminals for external conductors
26 Provision for earthing
27 Screws and connections
28 Creepage distances, clearances and distances through insulation
Annexes
Annex I (informative) Measurement of noise and vibration emissions
I.2 Noise test code (grade 2)
I.2.2 Sound power level determination
I.2.2.1 General
I.2.2.4 Lawn and garden machinery
I.2.2.101 Requirements for an artificial surface
I.2.2.102 Requirements for a natural ground surface
I.2.3 Emission sound pressure level determination
I.2.3.3 Lawn and garden machinery
I.2.4 Installation and mounting conditions of the power tools during noise tests
I.2.5 Operating conditions
I.3 Vibration
I.3.3.2 Location of measurement
I.3.5.2 Attachment, workpiece and task
I.3.5.3 Operating conditions
I.3.6.1 Reported vibration values
I.3.6.2 Declaration of the vibration total value
Annex K (normative) Battery tools and battery packs
K.1 Scope
K.3 Terms and definitions
K.8.14.1.101 Lawn trimmer and lawn edge trimmer safety warnings
K.8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
K.11 Input and current
K.14 Moisture resistance
K.21.107 Balance
K.21.302 Machines with integral batteries
K.21.302.2 Disabling device
K.21.302.2.1 General
K.21.302.2.2 Removable disabling device
K.21.302.2.3 Code protected disabling device
K.24 Supply connection and external flexible cords
K.28 Creepage distances, clearances and distances through insulation
Annex L (normative) Battery tools and battery packs provided with mains connection or non-isolated sources
L.1 Scope
L.8.14.1.102 Grass trimmer, brush cutter and brush saw safety warnings
L.21.302 Machines with integral batteries
L.21.302.2 Disabling device
L.21.302.2.1 General
L.21.302.2.2 Removable disabling device
L.21.302.2.3 Code protected disabling device
Annex AA (normative) Safety signs which may be used on machines
Annex BB (normative) Thrown objects test for grass trimmers, brush cutters and brush saws
BB.1 Test stand
BB.2 Test conditions
BB.3 Penetration wall
BB.4 Test pieces
BB.5 Procedure
BB.6 Inspection of the cutting means or cutting accessory
BB.7 Result
Annex CC (normative) Impact test for brush cutter and brush saw cutting accessories and grass trimmer cutting means
Annex DD (informative) Example of a material and construction fulfilling the requirements for an artificial surface
DD.1 Material
DD.2 Construction
Annex EE (informative) Summary of characteristics for lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws
Bibliography
Previous versions
AS/NZS 62841.4.4:2021 (Includes IEC Text)
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.