GB 3883.12-2012Safety of hand-held motor-operated electric tools -- Part 2: Particular requirements for concrete vibrators (English PDF)

Foreword

All technical contents of this section is mandatory.

GB 3883 "Safety of hand-held electric tools" is the safety standard for hand-held power tools from Part 1 General requirements and Requirements for Part 2 composition. GB 3883 composition "safe hand-held electric tools" are as follows.

--- GB 3883.1 "The first part of the security hand-held power tools. General requirements"

--- GB 3883.2 "Safety - Part 2 hand-held power tools. screwdrivers and impact wrenches."

--- GB 3883.3 "safe hand-held electric tools Part II. grinders, polishers and disc sanders requirements"

--- GB 3883.4 "Safety of hand-held electric tools Part 2. Non-disc sanders and polishers other special requirements"

--- GB 3883.5 "The second part of the security hand-held power tools. circular saws"

--- GB 3883.6 "Safety - Part 2 hand-held power tools. electric drills and impact drills requirements"

--- GB 3883.7 "Safety handheld power tool Part 2. requirements for hammers tool"

--- GB 3883.8 "Safety of hand-held electric tools Part 2. Particular requirements for electric shears and of"

--- GB 3883.9 "Safety - Part 2 hand-held power tools. tappers requirements"

--- GB 3883.10 "safe hand-held electric tools Part II. Particular requirements for planers"

--- GB 3883.11 "handheld power tool safety Part 2. reciprocating saws (jig, saber saws) special requirements"

--- GB 3883.12 "Safety - Part 2 hand-held power tools. Particular requirements for concrete vibrators"

--- GB 3883.13 "the second part of the security hand-held power tools. non-flammable liquid spray guns for special requirements"

--- GB 3883.14 "the second part of the security hand-held power tools. Particular requirements for chain saws."

--- GB 3883.15 "the second part of the security hand-held power tools. pruning shears requirements"

--- GB 3883.16 "safe hand-held electric tools Part II. Particular requirements for tackers"

--- GB 3883.17 "the second part of the security hand-held power tools. routers and trimmers special requirements"

--- GB 3883.18 "the second part of the security hand-held power tools. Particular requirements for marble cutters"

--- GB 3883.19 "safe hand-held electric tools Part 2. Particular requirements for drain cleaners."

--- GB 3883.20 "Safety - Part 2 hand-held power tools. requirements for strapping"

--- GB 3883.21 "Safety - Part 2 hand-held power tools. band saws"

--- GB 3883.22 "Safety handheld power tool of the second part. the requirements for slotter" this section GB 3883 Part 2. Particular requirements for concrete vibrators.

This section drafted in accordance with the rules GB/T 1.1-2009 given.

This partial replacement GB 3883.12-2007 "secure a second portion of the hand-held power tool. the requirements for concrete vibrators", Compared with GB 3883.12-2007, the main changes are as follows.

--- in "Terms and Definitions", changed the definition 3.101 for concrete vibrators (see 3.101);

--- In the "moisture resistance", a change of 14.1;

--- In the "mechanical strength", the NA 20.5;

--- In the "structure", the 21.32 NA;

--- In the "external power supply and the coupling cord", modify the provisions of "a power switch and the parts in contact with the cable length" (see 24.101);

--- increase typical design for concrete vibrators (FIG. 101, FIG. 102);

--- modified appendix K, Appendix L;

--- of 3.2.9,8.1,17.2,18.101,20.101,24.4,24.12 editorial changes.

This section uses the translation method is equivalent to using 60745-2-12 IEC .2008 (version 2.1) security "hand-held power tools section 2-12 Points. Particular requirements for concrete vibrators ", and identical with IEC 60745-1:2006 (version 4.0)" safety first hand-held power tools Part I. General requirements "established by GB 3883.1-2008" The first part of the security hand-held power tools. General requirements "used together.

This section states that "suitable", showing the corresponding provisions applicable in GB 3883.1-2008; stated in this section, "Change", and should in this section prevail provisions; stated in this section, "Edit", and indicates the corresponding provision of GB 3883.1-2008 content should be present After some changes the contents of the subject, and the provision of other content still apply; this states "addition", expressed in addition to compliance with GB 3883.1-Outside of the corresponding provision 2008, this section shall comply with the added provision.

This section was proposed by China Electrical Equipment Industrial Association.

This part of the jurisdiction of the National Power Tools Standardization Technical Committee (SAC/TC68).

This section was drafted. Shanghai Electric Tool Research Institute.

This part drafter. Pan Shunfang, Libang Association, Chen Jianqiu, Liu Jiang.

Previous versions of this part of the case released.

--- GB 3883.12-1985, GB 3883.12-1991, GB 3883.12-2007.

Safety of hand-held power tools Part 2. Particular requirements for concrete vibrators

1 Scope

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

increase.

This section applies to concrete vibrators.

2 Normative references

This chapter GB 3883.1-2008 is applicable.

3 Terms and Definitions

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

3.2.9 change as follows.

Normal load Filled tool to achieve continuous operation of the tube length and loading rods as in normal use. Run-time immersion vibrator filled with a certain the amount of water in the vessel, the amount of water is at least 50 times the volume of the rods.

About 50% of the diameter of the container the water level in the vessel.

Height of the container does not cause water spilled height to test.

increase.

3.101

Concrete vibrator the concrete tamping tool for. Concrete vibrator excitation members (rods) for the low amplitude vibration, and the need to insert a mixed tamping Concrete mixtures work. Concrete vibrator can be designed in one of the following.

a) and the motor are disposed within the vibrating mechanism vibrating rod, built by a long tube is coupled with the cable portion of the power switch, Assembly or the power converter and a switch connected to the vibration of the handle bar. Long tubes may be used as a handle (see FIG. 101);

b) a vibration mechanism is provided only in the vibrating rod, divided by a flexible shaft built long tube by the electric motor, and a power switch composed of a handle from the portable unit is connected with the rods (see FIG. 102).

4 General requirements

This chapter GB 3883.1-2008 is applicable.

General requirements Test 5 this chapter GB 3883.1-2008 is applicable.

6 Void

Category 7

This chapter GB 3883.1-2008 is applicable.

8 Signs and instructions

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

8.1 Addition.

After the first four dashes increase.

---place of origin;

9 Protection against contact with live parts

This chapter GB 3883.1-2008 is applicable.

10 Start

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

10.1 increase.

Test was carried out at ambient temperature for 10 °C ± 1 °C, the vibrator after holding at this temperature for at least 2h.

Power input and current 11 this chapter GB 3883.1-2008 is applicable.

12 Fever

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

12.4 for the change.

Measured after 30min vibrator operating temperature at a predetermined normal load conditions.

Leakage current 13

This chapter GB 3883.1-2008 is applicable.

14 Moisture resistance

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

14.1 to change the first paragraph.

For a) 3.101 design defined in the housing and all parts of the cable entry should be IPX7.

When the relevant test article, comprising a switch or a handle switch and the power converter assembly should be placed in the normal position of use, long tube (e.g.

There are), you should properly connected.

Defined for b 3.101) design, the motor unit should be IPX4.

When relevant tests section, the motor unit is placed in the most unfavorable position that may occur in normal use.

Isolation transformer or a motor - generator set should be IPX4.

Electrical strength 15 this chapter GB 3883.1-2008 is applicable.

Overload protection circuit 16 and its associated transformer this chapter GB 3883.1-2008 is applicable.

17 Endurance

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

17.2 for the change.

Tool under predetermined conditions of normal load of 1.1 times the rated voltage and the rated voltage of 0.9 times of the respective two runs 12h, each two Dwell time between 12h run at least 2h.

Available tools are not mounted on the switch on and off the tool.

During the test, allowing replacement of the brushes, on normal use of the grease filling tool.

If a tool according to any portion of the measured temperature more than 12.1 when the temperature rise test, it can be taken to stop or forced cooling, no downtime Provisions included in the operational period.

During these tests, overload should not operate.

18 Abnormal operation

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

That section 18.12 does not apply.

increase.

18.101 vibrator mounted normal use, to a long tube and the rods held in the air in a vertical position to the rated voltage or the rated voltage the upper limit of the voltage range, begins starting from room temperature.

Run as follows.

--- After 2min, concrete vibrators with the power switch, the power switch can release the switch actuator automatically and immediately shut off member motivation;

--- 15min, including those for the other power switch is locked in the "on" position concrete vibrator means.

When the protection device (if any) operation, the test is considered terminated.

Concrete vibrator has been cooled to approximately room temperature, the vibrator should be able to withstand the electric strength test specified in 15.2. But the rods with the vibrator motor, for a non-III tool, test voltage applied to the basic insulation reduced 1000V.

19 Mechanical hazards

This chapter GB 3883.1-2008 is applicable.

20 Mechanical strength

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

20.3 increase.

Only held in the hand during normal use or operation, or the member with the motor power switch before the test performed.

That section 20.5 does not apply.

increase.

20.101 between long pipe with a power switch and mechanical coupling member, the mechanical coupling between the rods and the tube length should be reliable.

Concrete vibrator assembly when in normal use, by applying a pulling force between the member 1min rods equipped with the power switch to Compliance is checked, the value of the tension (in N) rods equal mass (in kg) value of 200 times, but not more than 1200N.

During the test, the electrical coupling are not subjected to mechanical stress; After the test, equipped with a fixed switch part at the pipe length, and a fixed vibration Long pipe rods should at no significant shift.

Then, the vibrator should be subjected to the electrical strength test specified in 15.2.

Motor means for vibrating concrete vibrator in the rod, for a non-III tool, test voltage applied to the basic insulation reduced 1000V.

21 Structure

In addition to the following provisions, GB 3883.1-2008 of this chapter apply.

21.16 Addition.

Normal use to be inserted into a concrete mixture or vibration hand grip member or the operation, the power supply to the motor and other components Loop, with water supply should meet the requirements of the tool.

The isolation transformer not, there may be a motor having the same degree of isolation and power isolation by an isolation transformer - generator set.

Isolation transformer or motor - generator rated output voltage does not exceed.

--- 120V, frequency does not exceed 60Hz;

--- 250V, frequency is more than 60Hz.

Checked by inspection.

That section 21.32 does not apply.

Internal wiring 22

This chapter GB 3883.1-2008 is applicable.

23 Components

This chapter GB 3883.1-2008 is applicable.

24 and the external power supply cord coupling in addition to the following provisions, GB 3883.1-2008 of this chapter apply.

24.4 to change the first paragraph.

Power cable sheath wire should be not less than the heavy neoprene (GB/T 5013.4 of 60245IEC 66YCW).

increase.

24.101 parts in contact with the power switch of the cable length is.

--- the definition of a) the design of 3.101, at least 5m;

--- definition b) Design of 3.101, or no more than 0.5m at least 5m.

By measuring the length of the cable plug to the contents (including cable sheath) to test the Inlet part between the power switch.

24.12 Addition.

This provision does not apply to a vibration mechanism provided in the vibrating rod, the handheld portion excluding the motor, the power switch and the cable during normal use of the coagulation Earth shaker (except saddled used).

The outer lead terminals 25 this chapter GB 3883.1-2008 is applicable.

Grounding device 26

This chapter GB 3883.1-2008 is applicable.

The coupling member 27 with a screw this chapter GB 3883.1-2008 is applicable.

28 Creepage distance and clearance distance through insulation

This chapter GB 3883.1-2008 is applicable.

29 in heat resistance, flame retardancy and resistance to tracking this chapter GB 3883.1-2008 is applicable.

30 Rust

This chapter GB 3883.1-2008 is applicable.

31 Radiation, toxicity and similar hazards

This chapter GB 3883.1-2008 is applicable.

Description.

1 --- Cable;

2 --- commutator and the power switch with a handle;

3 --- containing portion of the power switch;

--- vibrator 4 with an electric motor.

Typically a 101 of FIG concrete vibrators) Design Description.

1 --- Cable;

2 --- switch with an electric motor;

3 --- flexible shaft;

4 --- vibrator.

Typical concrete vibrators b 102 of FIG.) Design appendix Except as follows, GB 3883.1-2008 Appendix applicable.

Appendix K

(Normative)

Tool battery and battery box K.1 increase.

Unless otherwise provided in this appendix, all applicable requirements of chapter dedicated.

K.10.1 special requirements of that section do not apply.

K.12.4 special requirements of that section do not apply.

K.14.1 special requirements of that section do not apply.

K.17.2 special requirements of that section do not apply.

K.18.101 special requirements of that section do not apply.

K.20.3 special requirements of that section do not apply.

K.20.101 special requirements of that section do not apply.

K.21.16 special requirements of that section do not apply.

K.24.4 special requirements of that section do not apply.

K.24.101 special requirements of that section do not apply.

Appendix L

(Normative)

Power source coupled to provide non-isolated tool battery and battery box L.1 increase.

Unless otherwise provided in this appendix, all applicable requirements of chapter dedicated.

references

GB 3883.1-2008 references apply.